1 | <?php |
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2 | // vim: set et ts=4 sw=4 fdm=marker: |
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3 | // +----------------------------------------------------------------------+ |
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4 | // | PHP versions 4 and 5 | |
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5 | // +----------------------------------------------------------------------+ |
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6 | // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, | |
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7 | // | Stig. S. Bakken, Lukas Smith | |
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8 | // | All rights reserved. | |
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9 | // +----------------------------------------------------------------------+ |
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10 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | |
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11 | // | API as well as database abstraction for PHP applications. | |
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12 | // | This LICENSE is in the BSD license style. | |
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13 | // | | |
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14 | // | Redistribution and use in source and binary forms, with or without | |
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15 | // | modification, are permitted provided that the following conditions | |
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16 | // | are met: | |
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17 | // | | |
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18 | // | Redistributions of source code must retain the above copyright | |
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19 | // | notice, this list of conditions and the following disclaimer. | |
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20 | // | | |
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21 | // | Redistributions in binary form must reproduce the above copyright | |
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22 | // | notice, this list of conditions and the following disclaimer in the | |
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23 | // | documentation and/or other materials provided with the distribution. | |
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24 | // | | |
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25 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | |
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26 | // | Lukas Smith nor the names of his contributors may be used to endorse | |
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27 | // | or promote products derived from this software without specific prior| |
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28 | // | written permission. | |
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29 | // | | |
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30 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
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31 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
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32 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
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33 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
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34 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
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35 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
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36 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| |
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37 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
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38 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
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39 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| |
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40 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
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41 | // | POSSIBILITY OF SUCH DAMAGE. | |
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42 | // +----------------------------------------------------------------------+ |
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43 | // | Author: Paul Cooper <pgc@ucecom.com> | |
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44 | // +----------------------------------------------------------------------+ |
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45 | // |
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46 | // $Id: pgsql.php 327317 2012-08-27 15:17:08Z danielc $ |
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47 | |
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48 | /** |
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49 | * MDB2 PostGreSQL driver |
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50 | * |
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51 | * @package MDB2 |
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52 | * @category Database |
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53 | * @author Paul Cooper <pgc@ucecom.com> |
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54 | */ |
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55 | class MDB2_Driver_pgsql extends MDB2_Driver_Common |
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56 | { |
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57 | // {{{ properties |
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58 | var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\'); |
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59 | |
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60 | var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"'); |
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61 | // }}} |
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62 | // {{{ constructor |
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63 | |
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64 | /** |
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65 | * Constructor |
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66 | */ |
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67 | function __construct() |
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68 | { |
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69 | parent::__construct(); |
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70 | |
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71 | $this->phptype = 'pgsql'; |
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72 | $this->dbsyntax = 'pgsql'; |
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73 | |
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74 | $this->supported['sequences'] = true; |
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75 | $this->supported['indexes'] = true; |
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76 | $this->supported['affected_rows'] = true; |
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77 | $this->supported['summary_functions'] = true; |
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78 | $this->supported['order_by_text'] = true; |
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79 | $this->supported['transactions'] = true; |
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80 | $this->supported['savepoints'] = true; |
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81 | $this->supported['current_id'] = true; |
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82 | $this->supported['limit_queries'] = true; |
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83 | $this->supported['LOBs'] = true; |
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84 | $this->supported['replace'] = 'emulated'; |
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85 | $this->supported['sub_selects'] = true; |
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86 | $this->supported['triggers'] = true; |
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87 | $this->supported['auto_increment'] = 'emulated'; |
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88 | $this->supported['primary_key'] = true; |
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89 | $this->supported['result_introspection'] = true; |
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90 | $this->supported['prepared_statements'] = true; |
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91 | $this->supported['identifier_quoting'] = true; |
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92 | $this->supported['pattern_escaping'] = true; |
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93 | $this->supported['new_link'] = true; |
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94 | |
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95 | $this->options['DBA_username'] = false; |
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96 | $this->options['DBA_password'] = false; |
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97 | $this->options['multi_query'] = false; |
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98 | $this->options['disable_smart_seqname'] = true; |
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99 | $this->options['max_identifiers_length'] = 63; |
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100 | } |
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101 | |
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102 | // }}} |
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103 | // {{{ errorInfo() |
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104 | |
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105 | /** |
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106 | * This method is used to collect information about an error |
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107 | * |
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108 | * @param integer $error |
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109 | * @return array |
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110 | * @access public |
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111 | */ |
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112 | function errorInfo($error = null) |
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113 | { |
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114 | // Fall back to MDB2_ERROR if there was no mapping. |
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115 | $error_code = MDB2_ERROR; |
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116 | |
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117 | $native_msg = ''; |
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118 | if (is_resource($error)) { |
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119 | $native_msg = @pg_result_error($error); |
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120 | } elseif ($this->connection) { |
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121 | $native_msg = @pg_last_error($this->connection); |
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122 | if (!$native_msg && @pg_connection_status($this->connection) === PGSQL_CONNECTION_BAD) { |
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123 | $native_msg = 'Database connection has been lost.'; |
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124 | $error_code = MDB2_ERROR_CONNECT_FAILED; |
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125 | } |
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126 | } else { |
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127 | $native_msg = @pg_last_error(); |
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128 | } |
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129 | |
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130 | static $error_regexps; |
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131 | if (empty($error_regexps)) { |
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132 | $error_regexps = array( |
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133 | '/column .* (of relation .*)?does not exist/i' |
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134 | => MDB2_ERROR_NOSUCHFIELD, |
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135 | '/(relation|sequence|table).*does not exist|class .* not found/i' |
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136 | => MDB2_ERROR_NOSUCHTABLE, |
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137 | '/database .* does not exist/' |
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138 | => MDB2_ERROR_NOT_FOUND, |
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139 | '/constraint .* does not exist/' |
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140 | => MDB2_ERROR_NOT_FOUND, |
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141 | '/index .* does not exist/' |
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142 | => MDB2_ERROR_NOT_FOUND, |
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143 | '/database .* already exists/i' |
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144 | => MDB2_ERROR_ALREADY_EXISTS, |
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145 | '/relation .* already exists/i' |
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146 | => MDB2_ERROR_ALREADY_EXISTS, |
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147 | '/(divide|division) by zero$/i' |
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148 | => MDB2_ERROR_DIVZERO, |
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149 | '/pg_atoi: error in .*: can\'t parse /i' |
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150 | => MDB2_ERROR_INVALID_NUMBER, |
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151 | '/invalid input syntax for( type)? (integer|numeric)/i' |
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152 | => MDB2_ERROR_INVALID_NUMBER, |
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153 | '/value .* is out of range for type \w*int/i' |
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154 | => MDB2_ERROR_INVALID_NUMBER, |
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155 | '/integer out of range/i' |
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156 | => MDB2_ERROR_INVALID_NUMBER, |
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157 | '/value too long for type character/i' |
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158 | => MDB2_ERROR_INVALID, |
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159 | '/attribute .* not found|relation .* does not have attribute/i' |
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160 | => MDB2_ERROR_NOSUCHFIELD, |
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161 | '/column .* specified in USING clause does not exist in (left|right) table/i' |
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162 | => MDB2_ERROR_NOSUCHFIELD, |
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163 | '/parser: parse error at or near/i' |
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164 | => MDB2_ERROR_SYNTAX, |
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165 | '/syntax error at/' |
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166 | => MDB2_ERROR_SYNTAX, |
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167 | '/column reference .* is ambiguous/i' |
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168 | => MDB2_ERROR_SYNTAX, |
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169 | '/permission denied/' |
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170 | => MDB2_ERROR_ACCESS_VIOLATION, |
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171 | '/violates not-null constraint/' |
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172 | => MDB2_ERROR_CONSTRAINT_NOT_NULL, |
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173 | '/violates [\w ]+ constraint/' |
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174 | => MDB2_ERROR_CONSTRAINT, |
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175 | '/referential integrity violation/' |
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176 | => MDB2_ERROR_CONSTRAINT, |
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177 | '/more expressions than target columns/i' |
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178 | => MDB2_ERROR_VALUE_COUNT_ON_ROW, |
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179 | ); |
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180 | } |
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181 | if (is_numeric($error) && $error < 0) { |
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182 | $error_code = $error; |
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183 | } else { |
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184 | foreach ($error_regexps as $regexp => $code) { |
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185 | if (preg_match($regexp, $native_msg)) { |
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186 | $error_code = $code; |
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187 | break; |
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188 | } |
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189 | } |
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190 | } |
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191 | return array($error_code, null, $native_msg); |
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192 | } |
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193 | |
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194 | // }}} |
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195 | // {{{ escape() |
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196 | |
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197 | /** |
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198 | * Quotes a string so it can be safely used in a query. It will quote |
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199 | * the text so it can safely be used within a query. |
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200 | * |
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201 | * @param string the input string to quote |
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202 | * @param bool escape wildcards |
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203 | * |
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204 | * @return string quoted string |
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205 | * |
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206 | * @access public |
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207 | */ |
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208 | function escape($text, $escape_wildcards = false) |
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209 | { |
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210 | if ($escape_wildcards) { |
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211 | $text = $this->escapePattern($text); |
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212 | } |
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213 | $connection = $this->getConnection(); |
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214 | if (MDB2::isError($connection)) { |
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215 | return $connection; |
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216 | } |
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217 | if (is_resource($connection) && version_compare(PHP_VERSION, '5.2.0RC5', '>=')) { |
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218 | $text = @pg_escape_string($connection, $text); |
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219 | } else { |
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220 | $text = @pg_escape_string($text); |
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221 | } |
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222 | return $text; |
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223 | } |
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224 | |
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225 | // }}} |
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226 | // {{{ beginTransaction() |
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227 | |
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228 | /** |
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229 | * Start a transaction or set a savepoint. |
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230 | * |
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231 | * @param string name of a savepoint to set |
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232 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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233 | * |
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234 | * @access public |
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235 | */ |
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236 | function beginTransaction($savepoint = null) |
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237 | { |
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238 | $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
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239 | if (null !== $savepoint) { |
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240 | if (!$this->in_transaction) { |
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241 | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
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242 | 'savepoint cannot be released when changes are auto committed', __FUNCTION__); |
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243 | } |
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244 | $query = 'SAVEPOINT '.$savepoint; |
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245 | return $this->_doQuery($query, true); |
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246 | } |
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247 | if ($this->in_transaction) { |
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248 | return MDB2_OK; //nothing to do |
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249 | } |
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250 | if (!$this->destructor_registered && $this->opened_persistent) { |
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251 | $this->destructor_registered = true; |
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252 | register_shutdown_function('MDB2_closeOpenTransactions'); |
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253 | } |
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254 | $result = $this->_doQuery('BEGIN', true); |
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255 | if (MDB2::isError($result)) { |
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256 | return $result; |
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257 | } |
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258 | $this->in_transaction = true; |
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259 | return MDB2_OK; |
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260 | } |
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261 | |
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262 | // }}} |
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263 | // {{{ commit() |
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264 | |
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265 | /** |
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266 | * Commit the database changes done during a transaction that is in |
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267 | * progress or release a savepoint. This function may only be called when |
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268 | * auto-committing is disabled, otherwise it will fail. Therefore, a new |
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269 | * transaction is implicitly started after committing the pending changes. |
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270 | * |
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271 | * @param string name of a savepoint to release |
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272 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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273 | * |
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274 | * @access public |
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275 | */ |
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276 | function commit($savepoint = null) |
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277 | { |
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278 | $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
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279 | if (!$this->in_transaction) { |
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280 | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
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281 | 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__); |
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282 | } |
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283 | if (null !== $savepoint) { |
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284 | $query = 'RELEASE SAVEPOINT '.$savepoint; |
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285 | return $this->_doQuery($query, true); |
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286 | } |
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287 | |
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288 | $result = $this->_doQuery('COMMIT', true); |
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289 | if (MDB2::isError($result)) { |
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290 | return $result; |
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291 | } |
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292 | $this->in_transaction = false; |
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293 | return MDB2_OK; |
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294 | } |
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295 | |
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296 | // }}} |
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297 | // {{{ rollback() |
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298 | |
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299 | /** |
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300 | * Cancel any database changes done during a transaction or since a specific |
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301 | * savepoint that is in progress. This function may only be called when |
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302 | * auto-committing is disabled, otherwise it will fail. Therefore, a new |
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303 | * transaction is implicitly started after canceling the pending changes. |
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304 | * |
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305 | * @param string name of a savepoint to rollback to |
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306 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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307 | * |
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308 | * @access public |
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309 | */ |
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310 | function rollback($savepoint = null) |
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311 | { |
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312 | $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
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313 | if (!$this->in_transaction) { |
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314 | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
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315 | 'rollback cannot be done changes are auto committed', __FUNCTION__); |
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316 | } |
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317 | if (null !== $savepoint) { |
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318 | $query = 'ROLLBACK TO SAVEPOINT '.$savepoint; |
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319 | return $this->_doQuery($query, true); |
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320 | } |
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321 | |
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322 | $query = 'ROLLBACK'; |
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323 | $result = $this->_doQuery($query, true); |
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324 | if (MDB2::isError($result)) { |
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325 | return $result; |
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326 | } |
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327 | $this->in_transaction = false; |
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328 | return MDB2_OK; |
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329 | } |
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330 | |
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331 | // }}} |
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332 | // {{{ function setTransactionIsolation() |
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333 | |
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334 | /** |
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335 | * Set the transacton isolation level. |
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336 | * |
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337 | * @param string standard isolation level |
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338 | * READ UNCOMMITTED (allows dirty reads) |
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339 | * READ COMMITTED (prevents dirty reads) |
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340 | * REPEATABLE READ (prevents nonrepeatable reads) |
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341 | * SERIALIZABLE (prevents phantom reads) |
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342 | * @param array some transaction options: |
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343 | * 'wait' => 'WAIT' | 'NO WAIT' |
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344 | * 'rw' => 'READ WRITE' | 'READ ONLY' |
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345 | * |
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346 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
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347 | * |
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348 | * @access public |
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349 | * @since 2.1.1 |
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350 | */ |
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351 | function setTransactionIsolation($isolation, $options = array()) |
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352 | { |
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353 | $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true)); |
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354 | switch ($isolation) { |
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355 | case 'READ UNCOMMITTED': |
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356 | case 'READ COMMITTED': |
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357 | case 'REPEATABLE READ': |
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358 | case 'SERIALIZABLE': |
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359 | break; |
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360 | default: |
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361 | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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362 | 'isolation level is not supported: '.$isolation, __FUNCTION__); |
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363 | } |
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364 | |
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365 | $query = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL $isolation"; |
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366 | return $this->_doQuery($query, true); |
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367 | } |
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368 | |
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369 | // }}} |
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370 | // {{{ _doConnect() |
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371 | |
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372 | /** |
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373 | * Do the grunt work of connecting to the database |
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374 | * |
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375 | * @return mixed connection resource on success, MDB2 Error Object on failure |
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376 | * @access protected |
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377 | */ |
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378 | function _doConnect($username, $password, $database_name, $persistent = false) |
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379 | { |
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380 | if (!extension_loaded($this->phptype)) { |
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381 | return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
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382 | 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__); |
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383 | } |
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384 | |
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385 | if ($database_name == '') { |
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386 | $database_name = 'template1'; |
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387 | } |
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388 | |
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389 | $protocol = $this->dsn['protocol'] ? $this->dsn['protocol'] : 'tcp'; |
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390 | |
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391 | $params = array(''); |
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392 | if ($protocol == 'tcp') { |
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393 | if ($this->dsn['hostspec']) { |
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394 | $params[0].= 'host=' . $this->dsn['hostspec']; |
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395 | } |
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396 | if ($this->dsn['port']) { |
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397 | $params[0].= ' port=' . $this->dsn['port']; |
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398 | } |
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399 | } elseif ($protocol == 'unix') { |
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400 | // Allow for pg socket in non-standard locations. |
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401 | if ($this->dsn['socket']) { |
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402 | $params[0].= 'host=' . $this->dsn['socket']; |
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403 | } |
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404 | if ($this->dsn['port']) { |
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405 | $params[0].= ' port=' . $this->dsn['port']; |
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406 | } |
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407 | } |
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408 | if ($database_name) { |
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409 | $params[0].= ' dbname=\'' . addslashes($database_name) . '\''; |
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410 | } |
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411 | if ($username) { |
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412 | $params[0].= ' user=\'' . addslashes($username) . '\''; |
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413 | } |
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414 | if ($password) { |
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415 | $params[0].= ' password=\'' . addslashes($password) . '\''; |
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416 | } |
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417 | if (!empty($this->dsn['options'])) { |
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418 | $params[0].= ' options=' . $this->dsn['options']; |
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419 | } |
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420 | if (!empty($this->dsn['tty'])) { |
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421 | $params[0].= ' tty=' . $this->dsn['tty']; |
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422 | } |
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423 | if (!empty($this->dsn['connect_timeout'])) { |
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424 | $params[0].= ' connect_timeout=' . $this->dsn['connect_timeout']; |
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425 | } |
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426 | if (!empty($this->dsn['sslmode'])) { |
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427 | $params[0].= ' sslmode=' . $this->dsn['sslmode']; |
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428 | } |
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429 | if (!empty($this->dsn['service'])) { |
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430 | $params[0].= ' service=' . $this->dsn['service']; |
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431 | } |
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432 | |
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433 | if ($this->_isNewLinkSet()) { |
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434 | if (version_compare(phpversion(), '4.3.0', '>=')) { |
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435 | $params[] = PGSQL_CONNECT_FORCE_NEW; |
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436 | } |
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437 | } |
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438 | |
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439 | $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect'; |
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440 | $connection = @call_user_func_array($connect_function, $params); |
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441 | if (!$connection) { |
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442 | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, |
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443 | 'unable to establish a connection', __FUNCTION__); |
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444 | } |
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445 | |
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446 | if (empty($this->dsn['disable_iso_date'])) { |
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447 | if (!@pg_query($connection, "SET SESSION DATESTYLE = 'ISO'")) { |
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448 | return $this->raiseError(null, null, null, |
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449 | 'Unable to set date style to iso', __FUNCTION__); |
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450 | } |
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451 | } |
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452 | |
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453 | if (!empty($this->dsn['charset'])) { |
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454 | $result = $this->setCharset($this->dsn['charset'], $connection); |
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455 | if (MDB2::isError($result)) { |
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456 | return $result; |
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457 | } |
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458 | } |
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459 | |
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460 | // Enable extra compatibility settings on 8.2 and later |
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461 | if (function_exists('pg_parameter_status')) { |
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462 | $version = pg_parameter_status($connection, 'server_version'); |
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463 | if ($version == false) { |
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464 | return $this->raiseError(null, null, null, |
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465 | 'Unable to retrieve server version', __FUNCTION__); |
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466 | } |
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467 | $version = explode ('.', $version); |
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468 | if ( $version['0'] > 8 |
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469 | || ($version['0'] == 8 && $version['1'] >= 2) |
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470 | ) { |
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471 | if (!@pg_query($connection, "SET SESSION STANDARD_CONFORMING_STRINGS = OFF")) { |
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472 | return $this->raiseError(null, null, null, |
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473 | 'Unable to set standard_conforming_strings to off', __FUNCTION__); |
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474 | } |
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475 | |
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476 | if (!@pg_query($connection, "SET SESSION ESCAPE_STRING_WARNING = OFF")) { |
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477 | return $this->raiseError(null, null, null, |
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478 | 'Unable to set escape_string_warning to off', __FUNCTION__); |
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479 | } |
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480 | } |
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481 | } |
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482 | |
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483 | return $connection; |
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484 | } |
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485 | |
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486 | // }}} |
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487 | // {{{ connect() |
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488 | |
---|
489 | /** |
---|
490 | * Connect to the database |
---|
491 | * |
---|
492 | * @return true on success, MDB2 Error Object on failure |
---|
493 | * @access public |
---|
494 | */ |
---|
495 | function connect() |
---|
496 | { |
---|
497 | if (is_resource($this->connection)) { |
---|
498 | //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 |
---|
499 | if (MDB2::areEquals($this->connected_dsn, $this->dsn) |
---|
500 | && $this->connected_database_name == $this->database_name |
---|
501 | && ($this->opened_persistent == $this->options['persistent']) |
---|
502 | ) { |
---|
503 | return MDB2_OK; |
---|
504 | } |
---|
505 | $this->disconnect(false); |
---|
506 | } |
---|
507 | |
---|
508 | if ($this->database_name) { |
---|
509 | $connection = $this->_doConnect($this->dsn['username'], |
---|
510 | $this->dsn['password'], |
---|
511 | $this->database_name, |
---|
512 | $this->options['persistent']); |
---|
513 | if (MDB2::isError($connection)) { |
---|
514 | return $connection; |
---|
515 | } |
---|
516 | |
---|
517 | $this->connection = $connection; |
---|
518 | $this->connected_dsn = $this->dsn; |
---|
519 | $this->connected_database_name = $this->database_name; |
---|
520 | $this->opened_persistent = $this->options['persistent']; |
---|
521 | $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype; |
---|
522 | } |
---|
523 | |
---|
524 | return MDB2_OK; |
---|
525 | } |
---|
526 | |
---|
527 | // }}} |
---|
528 | // {{{ setCharset() |
---|
529 | |
---|
530 | /** |
---|
531 | * Set the charset on the current connection |
---|
532 | * |
---|
533 | * @param string charset |
---|
534 | * @param resource connection handle |
---|
535 | * |
---|
536 | * @return true on success, MDB2 Error Object on failure |
---|
537 | */ |
---|
538 | function setCharset($charset, $connection = null) |
---|
539 | { |
---|
540 | if (null === $connection) { |
---|
541 | $connection = $this->getConnection(); |
---|
542 | if (MDB2::isError($connection)) { |
---|
543 | return $connection; |
---|
544 | } |
---|
545 | } |
---|
546 | if (is_array($charset)) { |
---|
547 | $charset = array_shift($charset); |
---|
548 | $this->warnings[] = 'postgresql does not support setting client collation'; |
---|
549 | } |
---|
550 | $result = @pg_set_client_encoding($connection, $charset); |
---|
551 | if ($result == -1) { |
---|
552 | return $this->raiseError(null, null, null, |
---|
553 | 'Unable to set client charset: '.$charset, __FUNCTION__); |
---|
554 | } |
---|
555 | return MDB2_OK; |
---|
556 | } |
---|
557 | |
---|
558 | // }}} |
---|
559 | // {{{ databaseExists() |
---|
560 | |
---|
561 | /** |
---|
562 | * check if given database name is exists? |
---|
563 | * |
---|
564 | * @param string $name name of the database that should be checked |
---|
565 | * |
---|
566 | * @return mixed true/false on success, a MDB2 error on failure |
---|
567 | * @access public |
---|
568 | */ |
---|
569 | function databaseExists($name) |
---|
570 | { |
---|
571 | $res = $this->_doConnect($this->dsn['username'], |
---|
572 | $this->dsn['password'], |
---|
573 | $this->escape($name), |
---|
574 | $this->options['persistent']); |
---|
575 | if (!MDB2::isError($res)) { |
---|
576 | return true; |
---|
577 | } |
---|
578 | |
---|
579 | return false; |
---|
580 | } |
---|
581 | |
---|
582 | // }}} |
---|
583 | // {{{ disconnect() |
---|
584 | |
---|
585 | /** |
---|
586 | * Log out and disconnect from the database. |
---|
587 | * |
---|
588 | * @param boolean $force if the disconnect should be forced even if the |
---|
589 | * connection is opened persistently |
---|
590 | * @return mixed true on success, false if not connected and error |
---|
591 | * object on error |
---|
592 | * @access public |
---|
593 | */ |
---|
594 | function disconnect($force = true) |
---|
595 | { |
---|
596 | if (is_resource($this->connection)) { |
---|
597 | if ($this->in_transaction) { |
---|
598 | $dsn = $this->dsn; |
---|
599 | $database_name = $this->database_name; |
---|
600 | $persistent = $this->options['persistent']; |
---|
601 | $this->dsn = $this->connected_dsn; |
---|
602 | $this->database_name = $this->connected_database_name; |
---|
603 | $this->options['persistent'] = $this->opened_persistent; |
---|
604 | $this->rollback(); |
---|
605 | $this->dsn = $dsn; |
---|
606 | $this->database_name = $database_name; |
---|
607 | $this->options['persistent'] = $persistent; |
---|
608 | } |
---|
609 | |
---|
610 | if (!$this->opened_persistent || $force) { |
---|
611 | $ok = @pg_close($this->connection); |
---|
612 | if (!$ok) { |
---|
613 | return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED, |
---|
614 | null, null, null, __FUNCTION__); |
---|
615 | } |
---|
616 | } |
---|
617 | } else { |
---|
618 | return false; |
---|
619 | } |
---|
620 | return parent::disconnect($force); |
---|
621 | } |
---|
622 | |
---|
623 | // }}} |
---|
624 | // {{{ standaloneQuery() |
---|
625 | |
---|
626 | /** |
---|
627 | * execute a query as DBA |
---|
628 | * |
---|
629 | * @param string $query the SQL query |
---|
630 | * @param mixed $types array that contains the types of the columns in |
---|
631 | * the result set |
---|
632 | * @param boolean $is_manip if the query is a manipulation query |
---|
633 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
634 | * @access public |
---|
635 | */ |
---|
636 | function standaloneQuery($query, $types = null, $is_manip = false) |
---|
637 | { |
---|
638 | $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username']; |
---|
639 | $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password']; |
---|
640 | $connection = $this->_doConnect($user, $pass, $this->database_name, $this->options['persistent']); |
---|
641 | if (MDB2::isError($connection)) { |
---|
642 | return $connection; |
---|
643 | } |
---|
644 | |
---|
645 | $offset = $this->offset; |
---|
646 | $limit = $this->limit; |
---|
647 | $this->offset = $this->limit = 0; |
---|
648 | $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); |
---|
649 | |
---|
650 | $result = $this->_doQuery($query, $is_manip, $connection, $this->database_name); |
---|
651 | if (!MDB2::isError($result)) { |
---|
652 | if ($is_manip) { |
---|
653 | $result = $this->_affectedRows($connection, $result); |
---|
654 | } else { |
---|
655 | $result = $this->_wrapResult($result, $types, true, true, $limit, $offset); |
---|
656 | } |
---|
657 | } |
---|
658 | |
---|
659 | @pg_close($connection); |
---|
660 | return $result; |
---|
661 | } |
---|
662 | |
---|
663 | // }}} |
---|
664 | // {{{ _doQuery() |
---|
665 | |
---|
666 | /** |
---|
667 | * Execute a query |
---|
668 | * @param string $query query |
---|
669 | * @param boolean $is_manip if the query is a manipulation query |
---|
670 | * @param resource $connection |
---|
671 | * @param string $database_name |
---|
672 | * @return result or error object |
---|
673 | * @access protected |
---|
674 | */ |
---|
675 | function _doQuery($query, $is_manip = false, $connection = null, $database_name = null) |
---|
676 | { |
---|
677 | $this->last_query = $query; |
---|
678 | $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre')); |
---|
679 | if ($result) { |
---|
680 | if (MDB2::isError($result)) { |
---|
681 | return $result; |
---|
682 | } |
---|
683 | $query = $result; |
---|
684 | } |
---|
685 | if ($this->options['disable_query']) { |
---|
686 | $result = $is_manip ? 0 : null; |
---|
687 | return $result; |
---|
688 | } |
---|
689 | |
---|
690 | if (null === $connection) { |
---|
691 | $connection = $this->getConnection(); |
---|
692 | if (MDB2::isError($connection)) { |
---|
693 | return $connection; |
---|
694 | } |
---|
695 | } |
---|
696 | |
---|
697 | $function = $this->options['multi_query'] ? 'pg_send_query' : 'pg_query'; |
---|
698 | $result = @$function($connection, $query); |
---|
699 | if (!$result) { |
---|
700 | $err = $this->raiseError(null, null, null, |
---|
701 | 'Could not execute statement', __FUNCTION__); |
---|
702 | return $err; |
---|
703 | } elseif ($this->options['multi_query']) { |
---|
704 | if (!($result = @pg_get_result($connection))) { |
---|
705 | $err = $this->raiseError(null, null, null, |
---|
706 | 'Could not get the first result from a multi query', __FUNCTION__); |
---|
707 | return $err; |
---|
708 | } |
---|
709 | } |
---|
710 | |
---|
711 | $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result)); |
---|
712 | return $result; |
---|
713 | } |
---|
714 | |
---|
715 | // }}} |
---|
716 | // {{{ _affectedRows() |
---|
717 | |
---|
718 | /** |
---|
719 | * Returns the number of rows affected |
---|
720 | * |
---|
721 | * @param resource $result |
---|
722 | * @param resource $connection |
---|
723 | * @return mixed MDB2 Error Object or the number of rows affected |
---|
724 | * @access private |
---|
725 | */ |
---|
726 | function _affectedRows($connection, $result = null) |
---|
727 | { |
---|
728 | if (null === $connection) { |
---|
729 | $connection = $this->getConnection(); |
---|
730 | if (MDB2::isError($connection)) { |
---|
731 | return $connection; |
---|
732 | } |
---|
733 | } |
---|
734 | return @pg_affected_rows($result); |
---|
735 | } |
---|
736 | |
---|
737 | // }}} |
---|
738 | // {{{ _modifyQuery() |
---|
739 | |
---|
740 | /** |
---|
741 | * Changes a query string for various DBMS specific reasons |
---|
742 | * |
---|
743 | * @param string $query query to modify |
---|
744 | * @param boolean $is_manip if it is a DML query |
---|
745 | * @param integer $limit limit the number of rows |
---|
746 | * @param integer $offset start reading from given offset |
---|
747 | * @return string modified query |
---|
748 | * @access protected |
---|
749 | */ |
---|
750 | function _modifyQuery($query, $is_manip, $limit, $offset) |
---|
751 | { |
---|
752 | if ($limit > 0 |
---|
753 | && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query) |
---|
754 | ) { |
---|
755 | $query = rtrim($query); |
---|
756 | if (substr($query, -1) == ';') { |
---|
757 | $query = substr($query, 0, -1); |
---|
758 | } |
---|
759 | if ($is_manip) { |
---|
760 | $query = $this->_modifyManipQuery($query, $limit); |
---|
761 | } else { |
---|
762 | $query.= " LIMIT $limit OFFSET $offset"; |
---|
763 | } |
---|
764 | } |
---|
765 | return $query; |
---|
766 | } |
---|
767 | |
---|
768 | // }}} |
---|
769 | // {{{ _modifyManipQuery() |
---|
770 | |
---|
771 | /** |
---|
772 | * Changes a manip query string for various DBMS specific reasons |
---|
773 | * |
---|
774 | * @param string $query query to modify |
---|
775 | * @param integer $limit limit the number of rows |
---|
776 | * @return string modified query |
---|
777 | * @access protected |
---|
778 | */ |
---|
779 | function _modifyManipQuery($query, $limit) |
---|
780 | { |
---|
781 | $pos = strpos(strtolower($query), 'where'); |
---|
782 | $where = $pos ? substr($query, $pos) : ''; |
---|
783 | |
---|
784 | $manip_clause = '(\bDELETE\b\s+(?:\*\s+)?\bFROM\b|\bUPDATE\b)'; |
---|
785 | $from_clause = '([\w\.]+)'; |
---|
786 | $where_clause = '(?:(.*)\bWHERE\b\s+(.*))|(.*)'; |
---|
787 | $pattern = '/^'. $manip_clause . '\s+' . $from_clause .'(?:\s)*(?:'. $where_clause .')?$/i'; |
---|
788 | $matches = preg_match($pattern, $query, $match); |
---|
789 | if ($matches) { |
---|
790 | $manip = $match[1]; |
---|
791 | $from = $match[2]; |
---|
792 | $what = (count($matches) == 6) ? $match[5] : $match[3]; |
---|
793 | return $manip.' '.$from.' '.$what.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')'; |
---|
794 | } |
---|
795 | //return error? |
---|
796 | return $query; |
---|
797 | } |
---|
798 | |
---|
799 | // }}} |
---|
800 | // {{{ getServerVersion() |
---|
801 | |
---|
802 | /** |
---|
803 | * return version information about the server |
---|
804 | * |
---|
805 | * @param bool $native determines if the raw version string should be returned |
---|
806 | * @return mixed array/string with version information or MDB2 error object |
---|
807 | * @access public |
---|
808 | */ |
---|
809 | function getServerVersion($native = false) |
---|
810 | { |
---|
811 | $query = 'SHOW SERVER_VERSION'; |
---|
812 | if ($this->connected_server_info) { |
---|
813 | $server_info = $this->connected_server_info; |
---|
814 | } else { |
---|
815 | $server_info = $this->queryOne($query, 'text'); |
---|
816 | if (MDB2::isError($server_info)) { |
---|
817 | return $server_info; |
---|
818 | } |
---|
819 | } |
---|
820 | // cache server_info |
---|
821 | $this->connected_server_info = $server_info; |
---|
822 | if (!$native && !MDB2::isError($server_info)) { |
---|
823 | $tmp = explode('.', $server_info, 3); |
---|
824 | if (empty($tmp[2]) |
---|
825 | && isset($tmp[1]) |
---|
826 | && preg_match('/(\d+)(.*)/', $tmp[1], $tmp2) |
---|
827 | ) { |
---|
828 | $server_info = array( |
---|
829 | 'major' => $tmp[0], |
---|
830 | 'minor' => $tmp2[1], |
---|
831 | 'patch' => null, |
---|
832 | 'extra' => $tmp2[2], |
---|
833 | 'native' => $server_info, |
---|
834 | ); |
---|
835 | } else { |
---|
836 | $server_info = array( |
---|
837 | 'major' => isset($tmp[0]) ? $tmp[0] : null, |
---|
838 | 'minor' => isset($tmp[1]) ? $tmp[1] : null, |
---|
839 | 'patch' => isset($tmp[2]) ? $tmp[2] : null, |
---|
840 | 'extra' => null, |
---|
841 | 'native' => $server_info, |
---|
842 | ); |
---|
843 | } |
---|
844 | } |
---|
845 | return $server_info; |
---|
846 | } |
---|
847 | |
---|
848 | // }}} |
---|
849 | // {{{ prepare() |
---|
850 | |
---|
851 | /** |
---|
852 | * Prepares a query for multiple execution with execute(). |
---|
853 | * With some database backends, this is emulated. |
---|
854 | * prepare() requires a generic query as string like |
---|
855 | * 'INSERT INTO numbers VALUES(?,?)' or |
---|
856 | * 'INSERT INTO numbers VALUES(:foo,:bar)'. |
---|
857 | * The ? and :name and are placeholders which can be set using |
---|
858 | * bindParam() and the query can be sent off using the execute() method. |
---|
859 | * The allowed format for :name can be set with the 'bindname_format' option. |
---|
860 | * |
---|
861 | * @param string $query the query to prepare |
---|
862 | * @param mixed $types array that contains the types of the placeholders |
---|
863 | * @param mixed $result_types array that contains the types of the columns in |
---|
864 | * the result set or MDB2_PREPARE_RESULT, if set to |
---|
865 | * MDB2_PREPARE_MANIP the query is handled as a manipulation query |
---|
866 | * @param mixed $lobs key (field) value (parameter) pair for all lob placeholders |
---|
867 | * @return mixed resource handle for the prepared query on success, a MDB2 |
---|
868 | * error on failure |
---|
869 | * @access public |
---|
870 | * @see bindParam, execute |
---|
871 | */ |
---|
872 | function prepare($query, $types = null, $result_types = null, $lobs = array()) |
---|
873 | { |
---|
874 | if ($this->options['emulate_prepared']) { |
---|
875 | return parent::prepare($query, $types, $result_types, $lobs); |
---|
876 | } |
---|
877 | $is_manip = ($result_types === MDB2_PREPARE_MANIP); |
---|
878 | $offset = $this->offset; |
---|
879 | $limit = $this->limit; |
---|
880 | $this->offset = $this->limit = 0; |
---|
881 | $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre')); |
---|
882 | if ($result) { |
---|
883 | if (MDB2::isError($result)) { |
---|
884 | return $result; |
---|
885 | } |
---|
886 | $query = $result; |
---|
887 | } |
---|
888 | $pgtypes = function_exists('pg_prepare') ? false : array(); |
---|
889 | if ($pgtypes !== false && !empty($types)) { |
---|
890 | $this->loadModule('Datatype', null, true); |
---|
891 | } |
---|
892 | $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); |
---|
893 | $placeholder_type_guess = $placeholder_type = null; |
---|
894 | $question = '?'; |
---|
895 | $colon = ':'; |
---|
896 | $positions = array(); |
---|
897 | $position = $parameter = 0; |
---|
898 | while ($position < strlen($query)) { |
---|
899 | $q_position = strpos($query, $question, $position); |
---|
900 | $c_position = strpos($query, $colon, $position); |
---|
901 | //skip "::type" cast ("select id::varchar(20) from sometable where name=?") |
---|
902 | $doublecolon_position = strpos($query, '::', $position); |
---|
903 | if ($doublecolon_position !== false && $doublecolon_position == $c_position) { |
---|
904 | $c_position = strpos($query, $colon, $position+2); |
---|
905 | } |
---|
906 | if ($q_position && $c_position) { |
---|
907 | $p_position = min($q_position, $c_position); |
---|
908 | } elseif ($q_position) { |
---|
909 | $p_position = $q_position; |
---|
910 | } elseif ($c_position) { |
---|
911 | $p_position = $c_position; |
---|
912 | } else { |
---|
913 | break; |
---|
914 | } |
---|
915 | if (null === $placeholder_type) { |
---|
916 | $placeholder_type_guess = $query[$p_position]; |
---|
917 | } |
---|
918 | |
---|
919 | $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position); |
---|
920 | if (MDB2::isError($new_pos)) { |
---|
921 | return $new_pos; |
---|
922 | } |
---|
923 | if ($new_pos != $position) { |
---|
924 | $position = $new_pos; |
---|
925 | continue; //evaluate again starting from the new position |
---|
926 | } |
---|
927 | |
---|
928 | if ($query[$position] == $placeholder_type_guess) { |
---|
929 | if (null === $placeholder_type) { |
---|
930 | $placeholder_type = $query[$p_position]; |
---|
931 | $question = $colon = $placeholder_type; |
---|
932 | if (!empty($types) && is_array($types)) { |
---|
933 | if ($placeholder_type == ':') { |
---|
934 | } else { |
---|
935 | $types = array_values($types); |
---|
936 | } |
---|
937 | } |
---|
938 | } |
---|
939 | if ($placeholder_type_guess == '?') { |
---|
940 | $length = 1; |
---|
941 | $name = $parameter; |
---|
942 | } else { |
---|
943 | $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s'; |
---|
944 | $param = preg_replace($regexp, '\\1', $query); |
---|
945 | if ($param === '') { |
---|
946 | $err = $this->raiseError(MDB2_ERROR_SYNTAX, null, null, |
---|
947 | 'named parameter name must match "bindname_format" option', __FUNCTION__); |
---|
948 | return $err; |
---|
949 | } |
---|
950 | $length = strlen($param) + 1; |
---|
951 | $name = $param; |
---|
952 | } |
---|
953 | if ($pgtypes !== false) { |
---|
954 | if (is_array($types) && array_key_exists($name, $types)) { |
---|
955 | $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$name]); |
---|
956 | } elseif (is_array($types) && array_key_exists($parameter, $types)) { |
---|
957 | $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$parameter]); |
---|
958 | } else { |
---|
959 | $pgtypes[] = 'text'; |
---|
960 | } |
---|
961 | } |
---|
962 | if (($key_parameter = array_search($name, $positions)) !== false) { |
---|
963 | //$next_parameter = 1; |
---|
964 | $parameter = $key_parameter + 1; |
---|
965 | //foreach ($positions as $key => $value) { |
---|
966 | // if ($key_parameter == $key) { |
---|
967 | // break; |
---|
968 | // } |
---|
969 | // ++$next_parameter; |
---|
970 | //} |
---|
971 | } else { |
---|
972 | ++$parameter; |
---|
973 | //$next_parameter = $parameter; |
---|
974 | $positions[] = $name; |
---|
975 | } |
---|
976 | $query = substr_replace($query, '$'.$parameter, $position, $length); |
---|
977 | $position = $p_position + strlen($parameter); |
---|
978 | } else { |
---|
979 | $position = $p_position; |
---|
980 | } |
---|
981 | } |
---|
982 | $connection = $this->getConnection(); |
---|
983 | if (MDB2::isError($connection)) { |
---|
984 | return $connection; |
---|
985 | } |
---|
986 | static $prep_statement_counter = 1; |
---|
987 | $statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand())); |
---|
988 | $statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']); |
---|
989 | if (false === $pgtypes) { |
---|
990 | $result = @pg_prepare($connection, $statement_name, $query); |
---|
991 | if (!$result) { |
---|
992 | $err = $this->raiseError(null, null, null, |
---|
993 | 'Unable to create prepared statement handle', __FUNCTION__); |
---|
994 | return $err; |
---|
995 | } |
---|
996 | } else { |
---|
997 | $types_string = ''; |
---|
998 | if ($pgtypes) { |
---|
999 | $types_string = ' ('.implode(', ', $pgtypes).') '; |
---|
1000 | } |
---|
1001 | $query = 'PREPARE '.$statement_name.$types_string.' AS '.$query; |
---|
1002 | $statement = $this->_doQuery($query, true, $connection); |
---|
1003 | if (MDB2::isError($statement)) { |
---|
1004 | return $statement; |
---|
1005 | } |
---|
1006 | } |
---|
1007 | |
---|
1008 | $class_name = 'MDB2_Statement_'.$this->phptype; |
---|
1009 | $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); |
---|
1010 | $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj)); |
---|
1011 | return $obj; |
---|
1012 | } |
---|
1013 | |
---|
1014 | // }}} |
---|
1015 | // {{{ function getSequenceName($sqn) |
---|
1016 | |
---|
1017 | /** |
---|
1018 | * adds sequence name formatting to a sequence name |
---|
1019 | * |
---|
1020 | * @param string name of the sequence |
---|
1021 | * |
---|
1022 | * @return string formatted sequence name |
---|
1023 | * |
---|
1024 | * @access public |
---|
1025 | */ |
---|
1026 | function getSequenceName($sqn) |
---|
1027 | { |
---|
1028 | if (false === $this->options['disable_smart_seqname']) { |
---|
1029 | if (strpos($sqn, '_') !== false) { |
---|
1030 | list($table, $field) = explode('_', $sqn, 2); |
---|
1031 | } |
---|
1032 | $schema_list = $this->queryOne("SELECT array_to_string(current_schemas(false), ',')"); |
---|
1033 | if (MDB2::isError($schema_list) || empty($schema_list) || count($schema_list) < 2) { |
---|
1034 | $order_by = ' a.attnum'; |
---|
1035 | $schema_clause = ' AND n.nspname=current_schema()'; |
---|
1036 | } else { |
---|
1037 | $schemas = explode(',', $schema_list); |
---|
1038 | $schema_clause = ' AND n.nspname IN ('.$schema_list.')'; |
---|
1039 | $counter = 1; |
---|
1040 | $order_by = ' CASE '; |
---|
1041 | foreach ($schemas as $schema) { |
---|
1042 | $order_by .= ' WHEN n.nspname='.$schema.' THEN '.$counter++; |
---|
1043 | } |
---|
1044 | $order_by .= ' ELSE '.$counter.' END, a.attnum'; |
---|
1045 | } |
---|
1046 | |
---|
1047 | $query = "SELECT substring((SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128) |
---|
1048 | FROM pg_attrdef d |
---|
1049 | WHERE d.adrelid = a.attrelid |
---|
1050 | AND d.adnum = a.attnum |
---|
1051 | AND a.atthasdef |
---|
1052 | ) FROM 'nextval[^'']*''([^'']*)') |
---|
1053 | FROM pg_attribute a |
---|
1054 | LEFT JOIN pg_class c ON c.oid = a.attrelid |
---|
1055 | LEFT JOIN pg_attrdef d ON d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef |
---|
1056 | LEFT JOIN pg_namespace n ON c.relnamespace = n.oid |
---|
1057 | WHERE (c.relname = ".$this->quote($sqn, 'text'); |
---|
1058 | if (!empty($field)) { |
---|
1059 | $query .= " OR (c.relname = ".$this->quote($table, 'text')." AND a.attname = ".$this->quote($field, 'text').")"; |
---|
1060 | } |
---|
1061 | $query .= " )" |
---|
1062 | .$schema_clause." |
---|
1063 | AND NOT a.attisdropped |
---|
1064 | AND a.attnum > 0 |
---|
1065 | AND pg_get_expr(d.adbin, d.adrelid) LIKE 'nextval%' |
---|
1066 | ORDER BY ".$order_by; |
---|
1067 | $seqname = $this->queryOne($query); |
---|
1068 | if (!MDB2::isError($seqname) && !empty($seqname) && is_string($seqname)) { |
---|
1069 | return $seqname; |
---|
1070 | } |
---|
1071 | } |
---|
1072 | |
---|
1073 | return parent::getSequenceName($sqn); |
---|
1074 | } |
---|
1075 | |
---|
1076 | // }}} |
---|
1077 | // {{{ nextID() |
---|
1078 | |
---|
1079 | /** |
---|
1080 | * Returns the next free id of a sequence |
---|
1081 | * |
---|
1082 | * @param string $seq_name name of the sequence |
---|
1083 | * @param boolean $ondemand when true the sequence is |
---|
1084 | * automatic created, if it |
---|
1085 | * not exists |
---|
1086 | * @return mixed MDB2 Error Object or id |
---|
1087 | * @access public |
---|
1088 | */ |
---|
1089 | function nextID($seq_name, $ondemand = true) |
---|
1090 | { |
---|
1091 | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); |
---|
1092 | $query = "SELECT NEXTVAL('$sequence_name')"; |
---|
1093 | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
---|
1094 | $this->expectError(MDB2_ERROR_NOSUCHTABLE); |
---|
1095 | $result = $this->queryOne($query, 'integer'); |
---|
1096 | $this->popExpect(); |
---|
1097 | $this->popErrorHandling(); |
---|
1098 | if (MDB2::isError($result)) { |
---|
1099 | if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) { |
---|
1100 | $this->loadModule('Manager', null, true); |
---|
1101 | $result = $this->manager->createSequence($seq_name); |
---|
1102 | if (MDB2::isError($result)) { |
---|
1103 | return $this->raiseError($result, null, null, |
---|
1104 | 'on demand sequence could not be created', __FUNCTION__); |
---|
1105 | } |
---|
1106 | return $this->nextId($seq_name, false); |
---|
1107 | } |
---|
1108 | } |
---|
1109 | return $result; |
---|
1110 | } |
---|
1111 | |
---|
1112 | // }}} |
---|
1113 | // {{{ lastInsertID() |
---|
1114 | |
---|
1115 | /** |
---|
1116 | * Returns the autoincrement ID if supported or $id or fetches the current |
---|
1117 | * ID in a sequence called: $table.(empty($field) ? '' : '_'.$field) |
---|
1118 | * |
---|
1119 | * @param string $table name of the table into which a new row was inserted |
---|
1120 | * @param string $field name of the field into which a new row was inserted |
---|
1121 | * @return mixed MDB2 Error Object or id |
---|
1122 | * @access public |
---|
1123 | */ |
---|
1124 | function lastInsertID($table = null, $field = null) |
---|
1125 | { |
---|
1126 | if (empty($table) && empty($field)) { |
---|
1127 | return $this->queryOne('SELECT lastval()', 'integer'); |
---|
1128 | } |
---|
1129 | $seq = $table.(empty($field) ? '' : '_'.$field); |
---|
1130 | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq), true); |
---|
1131 | return $this->queryOne("SELECT currval('$sequence_name')", 'integer'); |
---|
1132 | } |
---|
1133 | |
---|
1134 | // }}} |
---|
1135 | // {{{ currID() |
---|
1136 | |
---|
1137 | /** |
---|
1138 | * Returns the current id of a sequence |
---|
1139 | * |
---|
1140 | * @param string $seq_name name of the sequence |
---|
1141 | * @return mixed MDB2 Error Object or id |
---|
1142 | * @access public |
---|
1143 | */ |
---|
1144 | function currID($seq_name) |
---|
1145 | { |
---|
1146 | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); |
---|
1147 | return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer'); |
---|
1148 | } |
---|
1149 | } |
---|
1150 | |
---|
1151 | /** |
---|
1152 | * MDB2 PostGreSQL result driver |
---|
1153 | * |
---|
1154 | * @package MDB2 |
---|
1155 | * @category Database |
---|
1156 | * @author Paul Cooper <pgc@ucecom.com> |
---|
1157 | */ |
---|
1158 | class MDB2_Result_pgsql extends MDB2_Result_Common |
---|
1159 | { |
---|
1160 | // }}} |
---|
1161 | // {{{ fetchRow() |
---|
1162 | |
---|
1163 | /** |
---|
1164 | * Fetch a row and insert the data into an existing array. |
---|
1165 | * |
---|
1166 | * @param int $fetchmode how the array data should be indexed |
---|
1167 | * @param int $rownum number of the row where the data can be found |
---|
1168 | * @return int data array on success, a MDB2 error on failure |
---|
1169 | * @access public |
---|
1170 | */ |
---|
1171 | function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) |
---|
1172 | { |
---|
1173 | if (null !== $rownum) { |
---|
1174 | $seek = $this->seek($rownum); |
---|
1175 | if (MDB2::isError($seek)) { |
---|
1176 | return $seek; |
---|
1177 | } |
---|
1178 | } |
---|
1179 | if ($fetchmode == MDB2_FETCHMODE_DEFAULT) { |
---|
1180 | $fetchmode = $this->db->fetchmode; |
---|
1181 | } |
---|
1182 | if ( $fetchmode == MDB2_FETCHMODE_ASSOC |
---|
1183 | || $fetchmode == MDB2_FETCHMODE_OBJECT |
---|
1184 | ) { |
---|
1185 | $row = @pg_fetch_array($this->result, null, PGSQL_ASSOC); |
---|
1186 | if (is_array($row) |
---|
1187 | && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE |
---|
1188 | ) { |
---|
1189 | $row = array_change_key_case($row, $this->db->options['field_case']); |
---|
1190 | } |
---|
1191 | } else { |
---|
1192 | $row = @pg_fetch_row($this->result); |
---|
1193 | } |
---|
1194 | if (!$row) { |
---|
1195 | if (false === $this->result) { |
---|
1196 | $err = $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1197 | 'resultset has already been freed', __FUNCTION__); |
---|
1198 | return $err; |
---|
1199 | } |
---|
1200 | return null; |
---|
1201 | } |
---|
1202 | $mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL; |
---|
1203 | $rtrim = false; |
---|
1204 | if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) { |
---|
1205 | if (empty($this->types)) { |
---|
1206 | $mode += MDB2_PORTABILITY_RTRIM; |
---|
1207 | } else { |
---|
1208 | $rtrim = true; |
---|
1209 | } |
---|
1210 | } |
---|
1211 | if ($mode) { |
---|
1212 | $this->db->_fixResultArrayValues($row, $mode); |
---|
1213 | } |
---|
1214 | if ( ( $fetchmode != MDB2_FETCHMODE_ASSOC |
---|
1215 | && $fetchmode != MDB2_FETCHMODE_OBJECT) |
---|
1216 | && !empty($this->types) |
---|
1217 | ) { |
---|
1218 | $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim); |
---|
1219 | } elseif (($fetchmode == MDB2_FETCHMODE_ASSOC |
---|
1220 | || $fetchmode == MDB2_FETCHMODE_OBJECT) |
---|
1221 | && !empty($this->types_assoc) |
---|
1222 | ) { |
---|
1223 | $row = $this->db->datatype->convertResultRow($this->types_assoc, $row, $rtrim); |
---|
1224 | } |
---|
1225 | if (!empty($this->values)) { |
---|
1226 | $this->_assignBindColumns($row); |
---|
1227 | } |
---|
1228 | if ($fetchmode === MDB2_FETCHMODE_OBJECT) { |
---|
1229 | $object_class = $this->db->options['fetch_class']; |
---|
1230 | if ($object_class == 'stdClass') { |
---|
1231 | $row = (object) $row; |
---|
1232 | } else { |
---|
1233 | $rowObj = new $object_class($row); |
---|
1234 | $row = $rowObj; |
---|
1235 | } |
---|
1236 | } |
---|
1237 | ++$this->rownum; |
---|
1238 | return $row; |
---|
1239 | } |
---|
1240 | |
---|
1241 | // }}} |
---|
1242 | // {{{ _getColumnNames() |
---|
1243 | |
---|
1244 | /** |
---|
1245 | * Retrieve the names of columns returned by the DBMS in a query result. |
---|
1246 | * |
---|
1247 | * @return mixed Array variable that holds the names of columns as keys |
---|
1248 | * or an MDB2 error on failure. |
---|
1249 | * Some DBMS may not return any columns when the result set |
---|
1250 | * does not contain any rows. |
---|
1251 | * @access private |
---|
1252 | */ |
---|
1253 | function _getColumnNames() |
---|
1254 | { |
---|
1255 | $columns = array(); |
---|
1256 | $numcols = $this->numCols(); |
---|
1257 | if (MDB2::isError($numcols)) { |
---|
1258 | return $numcols; |
---|
1259 | } |
---|
1260 | for ($column = 0; $column < $numcols; $column++) { |
---|
1261 | $column_name = @pg_field_name($this->result, $column); |
---|
1262 | $columns[$column_name] = $column; |
---|
1263 | } |
---|
1264 | if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
---|
1265 | $columns = array_change_key_case($columns, $this->db->options['field_case']); |
---|
1266 | } |
---|
1267 | return $columns; |
---|
1268 | } |
---|
1269 | |
---|
1270 | // }}} |
---|
1271 | // {{{ numCols() |
---|
1272 | |
---|
1273 | /** |
---|
1274 | * Count the number of columns returned by the DBMS in a query result. |
---|
1275 | * |
---|
1276 | * @access public |
---|
1277 | * @return mixed integer value with the number of columns, a MDB2 error |
---|
1278 | * on failure |
---|
1279 | */ |
---|
1280 | function numCols() |
---|
1281 | { |
---|
1282 | $cols = @pg_num_fields($this->result); |
---|
1283 | if (null === $cols) { |
---|
1284 | if (false === $this->result) { |
---|
1285 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1286 | 'resultset has already been freed', __FUNCTION__); |
---|
1287 | } |
---|
1288 | if (null === $this->result) { |
---|
1289 | return count($this->types); |
---|
1290 | } |
---|
1291 | return $this->db->raiseError(null, null, null, |
---|
1292 | 'Could not get column count', __FUNCTION__); |
---|
1293 | } |
---|
1294 | return $cols; |
---|
1295 | } |
---|
1296 | |
---|
1297 | // }}} |
---|
1298 | // {{{ nextResult() |
---|
1299 | |
---|
1300 | /** |
---|
1301 | * Move the internal result pointer to the next available result |
---|
1302 | * |
---|
1303 | * @return true on success, false if there is no more result set or an error object on failure |
---|
1304 | * @access public |
---|
1305 | */ |
---|
1306 | function nextResult() |
---|
1307 | { |
---|
1308 | $connection = $this->db->getConnection(); |
---|
1309 | if (MDB2::isError($connection)) { |
---|
1310 | return $connection; |
---|
1311 | } |
---|
1312 | |
---|
1313 | if (!($this->result = @pg_get_result($connection))) { |
---|
1314 | return false; |
---|
1315 | } |
---|
1316 | return MDB2_OK; |
---|
1317 | } |
---|
1318 | |
---|
1319 | // }}} |
---|
1320 | // {{{ free() |
---|
1321 | |
---|
1322 | /** |
---|
1323 | * Free the internal resources associated with result. |
---|
1324 | * |
---|
1325 | * @return boolean true on success, false if result is invalid |
---|
1326 | * @access public |
---|
1327 | */ |
---|
1328 | function free() |
---|
1329 | { |
---|
1330 | if (is_resource($this->result) && $this->db->connection) { |
---|
1331 | $free = @pg_free_result($this->result); |
---|
1332 | if (false === $free) { |
---|
1333 | return $this->db->raiseError(null, null, null, |
---|
1334 | 'Could not free result', __FUNCTION__); |
---|
1335 | } |
---|
1336 | } |
---|
1337 | $this->result = false; |
---|
1338 | return MDB2_OK; |
---|
1339 | } |
---|
1340 | } |
---|
1341 | |
---|
1342 | /** |
---|
1343 | * MDB2 PostGreSQL buffered result driver |
---|
1344 | * |
---|
1345 | * @package MDB2 |
---|
1346 | * @category Database |
---|
1347 | * @author Paul Cooper <pgc@ucecom.com> |
---|
1348 | */ |
---|
1349 | class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql |
---|
1350 | { |
---|
1351 | // {{{ seek() |
---|
1352 | |
---|
1353 | /** |
---|
1354 | * Seek to a specific row in a result set |
---|
1355 | * |
---|
1356 | * @param int $rownum number of the row where the data can be found |
---|
1357 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
1358 | * @access public |
---|
1359 | */ |
---|
1360 | function seek($rownum = 0) |
---|
1361 | { |
---|
1362 | if ($this->rownum != ($rownum - 1) && !@pg_result_seek($this->result, $rownum)) { |
---|
1363 | if (false === $this->result) { |
---|
1364 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1365 | 'resultset has already been freed', __FUNCTION__); |
---|
1366 | } |
---|
1367 | if (null === $this->result) { |
---|
1368 | return MDB2_OK; |
---|
1369 | } |
---|
1370 | return $this->db->raiseError(MDB2_ERROR_INVALID, null, null, |
---|
1371 | 'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__); |
---|
1372 | } |
---|
1373 | $this->rownum = $rownum - 1; |
---|
1374 | return MDB2_OK; |
---|
1375 | } |
---|
1376 | |
---|
1377 | // }}} |
---|
1378 | // {{{ valid() |
---|
1379 | |
---|
1380 | /** |
---|
1381 | * Check if the end of the result set has been reached |
---|
1382 | * |
---|
1383 | * @return mixed true or false on sucess, a MDB2 error on failure |
---|
1384 | * @access public |
---|
1385 | */ |
---|
1386 | function valid() |
---|
1387 | { |
---|
1388 | $numrows = $this->numRows(); |
---|
1389 | if (MDB2::isError($numrows)) { |
---|
1390 | return $numrows; |
---|
1391 | } |
---|
1392 | return $this->rownum < ($numrows - 1); |
---|
1393 | } |
---|
1394 | |
---|
1395 | // }}} |
---|
1396 | // {{{ numRows() |
---|
1397 | |
---|
1398 | /** |
---|
1399 | * Returns the number of rows in a result object |
---|
1400 | * |
---|
1401 | * @return mixed MDB2 Error Object or the number of rows |
---|
1402 | * @access public |
---|
1403 | */ |
---|
1404 | function numRows() |
---|
1405 | { |
---|
1406 | $rows = @pg_num_rows($this->result); |
---|
1407 | if (null === $rows) { |
---|
1408 | if (false === $this->result) { |
---|
1409 | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
1410 | 'resultset has already been freed', __FUNCTION__); |
---|
1411 | } |
---|
1412 | if (null === $this->result) { |
---|
1413 | return 0; |
---|
1414 | } |
---|
1415 | return $this->db->raiseError(null, null, null, |
---|
1416 | 'Could not get row count', __FUNCTION__); |
---|
1417 | } |
---|
1418 | return $rows; |
---|
1419 | } |
---|
1420 | } |
---|
1421 | |
---|
1422 | /** |
---|
1423 | * MDB2 PostGreSQL statement driver |
---|
1424 | * |
---|
1425 | * @package MDB2 |
---|
1426 | * @category Database |
---|
1427 | * @author Paul Cooper <pgc@ucecom.com> |
---|
1428 | */ |
---|
1429 | class MDB2_Statement_pgsql extends MDB2_Statement_Common |
---|
1430 | { |
---|
1431 | // {{{ _execute() |
---|
1432 | |
---|
1433 | /** |
---|
1434 | * Execute a prepared query statement helper method. |
---|
1435 | * |
---|
1436 | * @param mixed $result_class string which specifies which result class to use |
---|
1437 | * @param mixed $result_wrap_class string which specifies which class to wrap results in |
---|
1438 | * |
---|
1439 | * @return mixed MDB2_Result or integer (affected rows) on success, |
---|
1440 | * a MDB2 error on failure |
---|
1441 | * @access private |
---|
1442 | */ |
---|
1443 | function _execute($result_class = true, $result_wrap_class = true) |
---|
1444 | { |
---|
1445 | if (null === $this->statement) { |
---|
1446 | return parent::_execute($result_class, $result_wrap_class); |
---|
1447 | } |
---|
1448 | $this->db->last_query = $this->query; |
---|
1449 | $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values)); |
---|
1450 | if ($this->db->getOption('disable_query')) { |
---|
1451 | $result = $this->is_manip ? 0 : null; |
---|
1452 | return $result; |
---|
1453 | } |
---|
1454 | |
---|
1455 | $connection = $this->db->getConnection(); |
---|
1456 | if (MDB2::isError($connection)) { |
---|
1457 | return $connection; |
---|
1458 | } |
---|
1459 | |
---|
1460 | $query = false; |
---|
1461 | $parameters = array(); |
---|
1462 | // todo: disabled until pg_execute() bytea issues are cleared up |
---|
1463 | if (true || !function_exists('pg_execute')) { |
---|
1464 | $query = 'EXECUTE '.$this->statement; |
---|
1465 | } |
---|
1466 | if (!empty($this->positions)) { |
---|
1467 | foreach ($this->positions as $parameter) { |
---|
1468 | if (!array_key_exists($parameter, $this->values)) { |
---|
1469 | return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
---|
1470 | 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); |
---|
1471 | } |
---|
1472 | $value = $this->values[$parameter]; |
---|
1473 | $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null; |
---|
1474 | if (is_resource($value) || $type == 'clob' || $type == 'blob' || $this->db->options['lob_allow_url_include']) { |
---|
1475 | if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) { |
---|
1476 | if ($match[1] == 'file://') { |
---|
1477 | $value = $match[2]; |
---|
1478 | } |
---|
1479 | $value = @fopen($value, 'r'); |
---|
1480 | $close = true; |
---|
1481 | } |
---|
1482 | if (is_resource($value)) { |
---|
1483 | $data = ''; |
---|
1484 | while (!@feof($value)) { |
---|
1485 | $data.= @fread($value, $this->db->options['lob_buffer_length']); |
---|
1486 | } |
---|
1487 | if ($close) { |
---|
1488 | @fclose($value); |
---|
1489 | } |
---|
1490 | $value = $data; |
---|
1491 | } |
---|
1492 | } |
---|
1493 | $quoted = $this->db->quote($value, $type, $query); |
---|
1494 | if (MDB2::isError($quoted)) { |
---|
1495 | return $quoted; |
---|
1496 | } |
---|
1497 | $parameters[] = $quoted; |
---|
1498 | } |
---|
1499 | if ($query) { |
---|
1500 | $query.= ' ('.implode(', ', $parameters).')'; |
---|
1501 | } |
---|
1502 | } |
---|
1503 | |
---|
1504 | if (!$query) { |
---|
1505 | $result = @pg_execute($connection, $this->statement, $parameters); |
---|
1506 | if (!$result) { |
---|
1507 | $err = $this->db->raiseError(null, null, null, |
---|
1508 | 'Unable to execute statement', __FUNCTION__); |
---|
1509 | return $err; |
---|
1510 | } |
---|
1511 | } else { |
---|
1512 | $result = $this->db->_doQuery($query, $this->is_manip, $connection); |
---|
1513 | if (MDB2::isError($result)) { |
---|
1514 | return $result; |
---|
1515 | } |
---|
1516 | } |
---|
1517 | |
---|
1518 | if ($this->is_manip) { |
---|
1519 | $affected_rows = $this->db->_affectedRows($connection, $result); |
---|
1520 | return $affected_rows; |
---|
1521 | } |
---|
1522 | |
---|
1523 | $result = $this->db->_wrapResult($result, $this->result_types, |
---|
1524 | $result_class, $result_wrap_class, $this->limit, $this->offset); |
---|
1525 | $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result)); |
---|
1526 | return $result; |
---|
1527 | } |
---|
1528 | |
---|
1529 | // }}} |
---|
1530 | // {{{ free() |
---|
1531 | |
---|
1532 | /** |
---|
1533 | * Release resources allocated for the specified prepared query. |
---|
1534 | * |
---|
1535 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
1536 | * @access public |
---|
1537 | */ |
---|
1538 | function free() |
---|
1539 | { |
---|
1540 | if (null === $this->positions) { |
---|
1541 | return $this->db->raiseError(MDB2_ERROR, null, null, |
---|
1542 | 'Prepared statement has already been freed', __FUNCTION__); |
---|
1543 | } |
---|
1544 | $result = MDB2_OK; |
---|
1545 | |
---|
1546 | if (null !== $this->statement) { |
---|
1547 | $connection = $this->db->getConnection(); |
---|
1548 | if (MDB2::isError($connection)) { |
---|
1549 | return $connection; |
---|
1550 | } |
---|
1551 | $query = 'DEALLOCATE PREPARE '.$this->statement; |
---|
1552 | $result = $this->db->_doQuery($query, true, $connection); |
---|
1553 | } |
---|
1554 | |
---|
1555 | parent::free(); |
---|
1556 | return $result; |
---|
1557 | } |
---|
1558 | |
---|
1559 | /** |
---|
1560 | * drop an existing table |
---|
1561 | * |
---|
1562 | * @param string $name name of the table that should be dropped |
---|
1563 | * @return mixed MDB2_OK on success, a MDB2 error on failure |
---|
1564 | * @access public |
---|
1565 | */ |
---|
1566 | function dropTable($name) |
---|
1567 | { |
---|
1568 | $db = $this->getDBInstance(); |
---|
1569 | if (MDB2::isError($db)) { |
---|
1570 | return $db; |
---|
1571 | } |
---|
1572 | |
---|
1573 | $name = $db->quoteIdentifier($name, true); |
---|
1574 | $result = $db->exec("DROP TABLE $name"); |
---|
1575 | |
---|
1576 | if (MDB2::isError($result)) { |
---|
1577 | $result = $db->exec("DROP TABLE $name CASCADE"); |
---|
1578 | } |
---|
1579 | |
---|
1580 | return $result; |
---|
1581 | } |
---|
1582 | } |
---|
1583 | ?> |
---|