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295 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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511 | daniel-mar | 5 | * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
295 | daniel-mar | 6 | * |
7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
511 | daniel-mar | 20 | if (!defined('INSIDE_OIDPLUS')) die(); |
21 | |||
295 | daniel-mar | 22 | class OIDplusDatabaseConnectionPgSql extends OIDplusDatabaseConnection { |
23 | private $conn = null; |
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24 | private $already_prepared = array(); |
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25 | private $last_error = null; // do the same like MySQL+PDO, just to be equal in the behavior |
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26 | |||
348 | daniel-mar | 27 | public static function getPlugin(): OIDplusDatabasePlugin { |
28 | return new OIDplusDatabasePluginPgSql(); |
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29 | } |
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30 | |||
295 | daniel-mar | 31 | public function doQuery(string $sql, /*?array*/ $prepared_args=null): OIDplusQueryResult { |
32 | $this->last_error = null; |
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33 | if (is_null($prepared_args)) { |
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34 | $res = @pg_query($this->conn, $sql); |
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35 | |||
36 | if ($res === false) { |
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37 | $this->last_error = pg_last_error($this->conn); |
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38 | throw new OIDplusSQLException($sql, $this->error()); |
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39 | } else { |
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40 | return new OIDplusQueryResultPgSql($res); |
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41 | } |
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42 | } else { |
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43 | if (!is_array($prepared_args)) { |
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360 | daniel-mar | 44 | throw new OIDplusException(_L('"prepared_args" must be either NULL or an ARRAY.')); |
295 | daniel-mar | 45 | } |
46 | |||
47 | // convert ? ? ? to $1 $2 $3 |
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48 | $sql = preg_replace_callback('@\\?@', function($found) { |
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49 | static $i = 0; |
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50 | $i++; |
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51 | return '$'.$i; |
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52 | }, $sql); |
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53 | |||
54 | $prepare_name = 'OIDplus_ps_'.sha1($sql); |
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55 | if (!in_array($prepare_name, $this->already_prepared)) { |
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56 | $res = @pg_prepare($this->conn, $prepare_name, $sql); |
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57 | if ($res === false) { |
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58 | $this->last_error = pg_last_error($this->conn); |
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360 | daniel-mar | 59 | throw new OIDplusSQLException($sql, _L('Cannot prepare statement').': '.$this->error()); |
295 | daniel-mar | 60 | } |
61 | $this->already_prepared[] = $prepare_name; |
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62 | } |
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63 | |||
64 | foreach ($prepared_args as &$value) { |
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65 | if (is_bool($value)) $value = $value ? '1' : '0'; |
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66 | } |
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67 | |||
68 | $ps = pg_execute($this->conn, $prepare_name, $prepared_args); |
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69 | if ($ps === false) { |
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70 | $this->last_error = pg_last_error($this->conn); |
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71 | throw new OIDplusSQLException($sql, $this->error()); |
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72 | } |
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73 | return new OIDplusQueryResultPgSql($ps); |
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74 | } |
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75 | } |
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76 | |||
77 | public function insert_id(): int { |
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78 | try { |
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79 | return (int)$this->query('select lastval() as id')->fetch_object()->id; |
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80 | } catch (Exception $e) { |
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81 | return 0; |
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82 | } |
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83 | } |
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84 | |||
85 | public function error(): string { |
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86 | $err = $this->last_error; |
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87 | if ($err == null) $err = ''; |
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88 | return $err; |
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89 | } |
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90 | |||
91 | protected function doConnect()/*: void*/ { |
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360 | daniel-mar | 92 | if (!function_exists('pg_connect')) throw new OIDplusConfigInitializationException(_L('PHP extension "%1" not installed','PostgreSQL')); |
295 | daniel-mar | 93 | |
94 | // Try connecting to the database |
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95 | ob_start(); |
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96 | $err = ''; |
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97 | try { |
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98 | $host = OIDplus::baseConfig()->getValue('PGSQL_HOST', 'localhost:5432'); |
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99 | $username = OIDplus::baseConfig()->getValue('PGSQL_USERNAME', 'postgres'); |
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100 | $password = OIDplus::baseConfig()->getValue('PGSQL_PASSWORD', ''); |
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101 | $database = OIDplus::baseConfig()->getValue('PGSQL_DATABASE', 'oidplus'); |
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102 | list($hostname, $port) = explode(':', "$host:5432"); |
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316 | daniel-mar | 103 | // We need to use PGSQL_CONNECT_FORCE_NEW because we require two connectoins (for isolated log message queries) |
104 | $this->conn = pg_connect("host=$hostname user=$username password=$password port=$port dbname=$database", PGSQL_CONNECT_FORCE_NEW); |
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295 | daniel-mar | 105 | } finally { |
106 | # TODO: this does not seem to work?! (at least not for CLI) |
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107 | $err = ob_get_contents(); |
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108 | ob_end_clean(); |
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109 | } |
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110 | |||
111 | if (!$this->conn) { |
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360 | daniel-mar | 112 | throw new OIDplusConfigInitializationException(_L('Connection to the database failed!').' ' . strip_tags($err)); |
295 | daniel-mar | 113 | } |
114 | |||
115 | $this->already_prepared = array(); |
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116 | $this->last_error = null; |
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117 | |||
118 | try { |
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119 | $this->query("SET NAMES 'utf8'"); |
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120 | } catch (Exception $e) { |
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121 | } |
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122 | } |
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123 | |||
124 | protected function doDisconnect()/*: void*/ { |
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125 | $this->already_prepared = array(); |
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126 | if (!is_null($this->conn)) { |
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127 | pg_close($this->conn); |
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128 | $this->conn = null; |
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129 | } |
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130 | } |
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131 | |||
132 | private $intransaction = false; |
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133 | |||
134 | public function transaction_supported(): bool { |
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135 | return true; |
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136 | } |
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137 | |||
138 | public function transaction_level(): int { |
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139 | return $this->intransaction ? 1 : 0; |
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140 | } |
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141 | |||
142 | public function transaction_begin()/*: void*/ { |
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360 | daniel-mar | 143 | if ($this->intransaction) throw new OIDplusException(_L('Nested transactions are not supported by this database plugin.')); |
295 | daniel-mar | 144 | $this->query('begin transaction'); |
145 | $this->intransaction = true; |
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146 | } |
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147 | |||
148 | public function transaction_commit()/*: void*/ { |
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149 | $this->query('commit'); |
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150 | $this->intransaction = false; |
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151 | } |
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152 | |||
153 | public function transaction_rollback()/*: void*/ { |
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154 | $this->query('rollback'); |
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155 | $this->intransaction = false; |
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156 | } |
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157 | |||
158 | public function sqlDate(): string { |
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159 | return 'now()'; |
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160 | } |
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316 | daniel-mar | 161 | |
502 | daniel-mar | 162 | protected function doGetSlang(bool $mustExist=true)/*: ?OIDplusSqlSlangPlugin*/ { |
318 | daniel-mar | 163 | $slang = OIDplus::getSqlSlangPlugin('pgsql'); |
316 | daniel-mar | 164 | if (is_null($slang)) { |
360 | daniel-mar | 165 | throw new OIDplusConfigInitializationException(_L('SQL-Slang plugin "%1" is missing. Please check if it exists in the directory "plugin/sqlSlang". If it is not existing, please recover it from an SVN snapshot or OIDplus ZIP file.','pgsql')); |
316 | daniel-mar | 166 | } |
167 | return $slang; |
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168 | } |
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360 | daniel-mar | 169 | } |