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150 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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5 | * Copyright 2019 Daniel Marschall, ViaThinkSoft |
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6 | * |
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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 | |||
20 | if (!defined('IN_OIDPLUS')) die(); |
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21 | |||
227 | daniel-mar | 22 | class OIDplusDataBasePluginPDO extends OIDplusDataBasePlugin { |
150 | daniel-mar | 23 | private $pdo; |
24 | private $last_query; |
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25 | private $prepare_cache = array(); |
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26 | |||
236 | daniel-mar | 27 | public static function getPluginInformation(): array { |
222 | daniel-mar | 28 | $out = array(); |
29 | $out['name'] = 'PDO'; |
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30 | $out['author'] = 'ViaThinkSoft'; |
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31 | $out['version'] = null; |
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32 | $out['descriptionHTML'] = null; |
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33 | return $out; |
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34 | } |
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35 | |||
236 | daniel-mar | 36 | public static function name(): string { |
150 | daniel-mar | 37 | return "PDO"; |
38 | } |
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39 | |||
236 | daniel-mar | 40 | public function query($sql, $prepared_args=null): OIDplusQueryResult { |
150 | daniel-mar | 41 | $this->last_query = $sql; |
42 | if (is_null($prepared_args)) { |
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236 | daniel-mar | 43 | $res = $this->pdo->query($sql); |
44 | |||
45 | if ($res === false) { |
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46 | throw new OIDplusSQLException($sql, $this->error()); |
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47 | } else { |
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48 | return new OIDplusQueryResultPDO($res); |
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49 | } |
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150 | daniel-mar | 50 | } else { |
51 | // TEST: Emulate the prepared statement |
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236 | daniel-mar | 52 | /* |
150 | daniel-mar | 53 | foreach ($prepared_args as $arg) { |
54 | $needle = '?'; |
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55 | $replace = "'$arg'"; // TODO: types |
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56 | $pos = strpos($sql, $needle); |
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57 | if ($pos !== false) { |
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58 | $sql = substr_replace($sql, $replace, $pos, strlen($needle)); |
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59 | } |
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60 | } |
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236 | daniel-mar | 61 | return OIDplusQueryResultPDO($this->pdo->query($sql)); |
62 | */ |
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150 | daniel-mar | 63 | |
64 | if (!is_array($prepared_args)) { |
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65 | throw new Exception("'prepared_args' must be either NULL or an ARRAY."); |
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66 | } |
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67 | if (isset($this->prepare_cache[$sql])) { |
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68 | $ps = $this->prepare_cache[$sql]; |
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69 | } else { |
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70 | $ps = $this->pdo->prepare($sql); |
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71 | if (!$ps) { |
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236 | daniel-mar | 72 | throw new OIDplusSQLException($sql, 'Cannot prepare statement'); |
150 | daniel-mar | 73 | } |
74 | $this->prepare_cache[$sql] = $ps; |
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75 | } |
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76 | if (!$ps->execute($prepared_args)) { |
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236 | daniel-mar | 77 | throw new OIDplusSQLException($sql, $this->error()); |
150 | daniel-mar | 78 | } |
236 | daniel-mar | 79 | return new OIDplusQueryResultPDO($ps); |
150 | daniel-mar | 80 | } |
81 | } |
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236 | daniel-mar | 82 | |
83 | public function insert_id(): int { |
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150 | daniel-mar | 84 | return $this->pdo->lastInsertId(); |
85 | } |
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236 | daniel-mar | 86 | |
87 | public function error(): string { |
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150 | daniel-mar | 88 | return $this->pdo->errorInfo()[2]; |
89 | } |
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236 | daniel-mar | 90 | |
91 | public function connect(): void { |
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150 | daniel-mar | 92 | try { |
93 | $options = [ |
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94 | # PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, |
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95 | PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, |
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96 | PDO::ATTR_EMULATE_PREPARES => true, |
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97 | ]; |
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98 | |||
99 | // Try connecting to the database |
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100 | $this->pdo = new PDO(OIDPLUS_PDO_DSN, OIDPLUS_PDO_USERNAME, base64_decode(OIDPLUS_PDO_PASSWORD), $options); |
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101 | } catch (PDOException $e) { |
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237 | daniel-mar | 102 | parent::showConnectError($e->getMessage()); |
150 | daniel-mar | 103 | die(); |
104 | } |
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105 | |||
106 | $this->query("SET NAMES 'utf8'"); |
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237 | daniel-mar | 107 | $this->afterConnect(); |
150 | daniel-mar | 108 | $this->connected = true; |
109 | } |
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110 | |||
111 | private $intransaction = false; |
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112 | |||
236 | daniel-mar | 113 | public function transaction_begin(): void { |
150 | daniel-mar | 114 | if ($this->intransaction) throw new Exception("Nested transactions are not supported by this database plugin."); |
115 | $this->pdo->beginTransaction(); |
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116 | $this->intransaction = true; |
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117 | } |
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118 | |||
236 | daniel-mar | 119 | public function transaction_commit(): void { |
150 | daniel-mar | 120 | $this->pdo->commit(); |
121 | $this->intransaction = false; |
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122 | } |
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123 | |||
236 | daniel-mar | 124 | public function transaction_rollback(): void { |
150 | daniel-mar | 125 | $this->pdo->rollBack(); |
126 | $this->intransaction = false; |
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127 | } |
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128 | } |
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236 | daniel-mar | 129 | |
130 | class OIDplusQueryResultPDO extends OIDplusQueryResult { |
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131 | protected $no_resultset; |
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132 | protected $res; |
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133 | |||
134 | public function __construct($res) { |
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135 | $this->no_resultset = $res === false; |
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136 | $this->res = $res; |
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137 | } |
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138 | |||
139 | public function containsResultSet(): bool { |
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140 | return !$this->no_resultset; |
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141 | } |
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142 | |||
143 | public function num_rows(): int { |
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144 | if ($this->no_resultset) throw new Exception("The query has returned no result set (i.e. it was not a SELECT query)"); |
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145 | return $this->res->rowCount(); |
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146 | } |
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147 | |||
148 | public function fetch_array()/*: ?array*/ { |
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149 | if ($this->no_resultset) throw new Exception("The query has returned no result set (i.e. it was not a SELECT query)"); |
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150 | $ret = $this->res->fetch(PDO::FETCH_ASSOC); |
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151 | if ($ret === false) $ret = null; |
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152 | return $ret; |
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153 | } |
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154 | |||
155 | public function fetch_object()/*: ?object*/ { |
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156 | if ($this->no_resultset) throw new Exception("The query has returned no result set (i.e. it was not a SELECT query)"); |
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157 | $ret = $this->res->fetch(PDO::FETCH_OBJ); |
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158 | if ($ret === false) $ret = null; |
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159 | return $ret; |
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160 | } |
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161 | } |