1 | <?php
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2 | /**
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3 | *
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4 | * Copyright (C) 2012 Consórcio Expresso Livre - 4Linux (www.4linux.com.br) e Prognus Software Livre (www.prognus.com.br)
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5 | *
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6 | * This program is free software; you can redistribute it and/or modify it under
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7 | * the terms of the GNU Affero General Public License version 3 as published by
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8 | * the Free Software Foundation with the addition of the following permission
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9 | * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
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10 | * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE
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11 | * WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
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12 | *
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13 | * This program is distributed in the hope that it will be useful, but WITHOUT
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14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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15 | * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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16 | * details.
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17 | *
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18 | * You should have received a copy of the GNU Affero General Public License
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19 | * along with this program; if not, see www.gnu.org/licenses or write to
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20 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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21 | * MA 02110-1301 USA.
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22 | *
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23 | * This code is based on the OpenXchange Connector and on the Prognus pSync
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24 | * Connector both developed by the community and licensed under the GPL
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25 | * version 2 or above as published by the Free Software Foundation.
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26 | *
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27 | * You can contact Prognus Software Livre headquarters at Av. Tancredo Neves,
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28 | * 6731, PTI, Edifício do Saber, 3º floor, room 306, Foz do Iguaçu - PR - Brasil or at
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29 | * e-mail address prognus@prognus.com.br.
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30 | *
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31 | * Classe de abstração que implementa métodos de manipulação de banco de dados
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32 | * executando instruções SQL a partir de parâmetros passados pelos métodos.
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33 | *
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34 | * @package Prototype
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35 | * @license http://www.gnu.org/copyleft/gpl.html GPL
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36 | * @author Consórcio Expresso Livre - 4Linux (www.4linux.com.br) e Prognus Software Livre (www.prognus.com.br)
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37 | * @version 2.4
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38 | * @sponsor Caixa Econômica Federal
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39 | * @since Arquivo disponibilizado na versão 2.4
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40 | */
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41 |
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42 | class PostgreSQL implements Service
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43 | {
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44 | private $con; //Conexão com o banco de dados
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45 | private $config; //Configuração
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46 | public $error = false; //Armazena um erro caso ocorra
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47 |
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48 | public function find ( $uri, $justthese = false, $criteria = false ){
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49 |
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50 | $map = Config::get($uri['concept'], 'PostgreSQL.mapping');
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51 |
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52 | $criteria = ($criteria !== false) ? $this->parseCriteria ( $criteria , $map) : '';
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53 |
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54 | $justthese = self::parseJustthese($justthese, $map);
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55 |
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56 | return $this->execSql( 'SELECT '.$justthese['select'].' FROM '. (Config::get($uri['concept'],'PostgreSQL.concept')) .' '.$criteria );
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57 | }
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58 |
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59 | public function read ( $uri, $justthese = false , $criteria = false){
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60 |
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61 | $map = Config::get($uri['concept'], 'PostgreSQL.mapping');
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62 | $justthese = self::parseJustthese($justthese, $map);
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63 | $criteria = ($criteria !== false) ? $this->parseCriteria ( $criteria , $map , ' WHERE '.$map['id'].' = \''.addslashes( $uri['id'] ).'\'') : ' WHERE '.$map['id'].' = \''.addslashes( $uri['id'] ).'\'';
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64 |
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65 | return $this->execSql( 'SELECT '.$justthese['select'].' FROM '. (Config::get($uri['concept'],'PostgreSQL.concept')) .$criteria , true );
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66 | }
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67 |
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68 | public function deleteAll ( $uri, $justthese = false, $criteria = false ){
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69 | $map = Config::get($uri['concept'], 'PostgreSQL.mapping');
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70 | if(!self::parseCriteria ( $criteria , $map)) return false; //Validador para não apagar tabela inteira
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71 | return $this->execSql( 'DELETE FROM '.(Config::get($uri['concept'],'PostgreSQL.concept')).' '.self::parseCriteria ( $criteria ,$map) );
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72 | }
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73 |
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74 | public function delete ( $uri, $justthese = false, $criteria = false ){
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75 | if(!isset($uri['id']) && !is_int($uri['id'])) return false; //Delete chamado apenas passando id inteiros
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76 | $map = Config::get($uri['concept'], 'PostgreSQL.mapping');
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77 | $criteria = ($criteria !== false) ? $this->parseCriteria ( $criteria , $map , ' WHERE '.$map['id'].' = \''.addslashes( $uri['id'] ).'\'') : ' WHERE '.$map['id'].' = \''.addslashes( $uri['id'] ).'\'';
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78 | return $this->execSql('DELETE FROM '.(Config::get($uri['concept'],'PostgreSQL.concept')).$criteria);
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79 | }
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80 |
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81 | public function replace ( $uri, $data, $criteria = false ){
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82 | $map = Config::get($uri['concept'], 'PostgreSQL.mapping');
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83 | return $this->execSql('UPDATE '.(Config::get($uri['concept'],'PostgreSQL.concept')).' '. self::parseUpdateData( $data ,$map).' '.self::parseCriteria($criteria , $map));
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84 | }
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85 |
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86 | public function update ( $uri, $data, $criteria = false ){
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87 | $map = Config::get($uri['concept'], 'PostgreSQL.mapping');
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88 | $criteria = ($criteria !== false) ? $this->parseCriteria ( $criteria , $map , ' WHERE '.$map['id'].' = \''.addslashes( $uri['id'] ).'\'') : ' WHERE '.$map['id'].' = \''.addslashes( $uri['id'] ).'\'';
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89 | return $this->execSql('UPDATE '.(Config::get($uri['concept'],'PostgreSQL.concept')).' '. self::parseUpdateData( $data ,$map).$criteria);
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90 | }
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91 |
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92 | public function create ( $uri, $data ){
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93 | return $this->execSql( 'INSERT INTO '.(Config::get($uri['concept'],'PostgreSQL.concept')).' '.self::parseInsertData( $data , $uri['concept'] ), true );
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94 | }
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95 |
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96 | public function execSql( $sql, $unique = false )
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97 | {
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98 | if(!$this->con) $this->open( $this->config );
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99 |
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100 | $rs = pg_query( $this->con, $sql );
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101 |
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102 | switch( pg_num_rows( $rs ) )
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103 | {
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104 | case -1:
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105 | $this->error = pg_last_error ( $this->con );
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106 | return( false );
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107 |
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108 | case 0:
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109 | return( pg_affected_rows( $rs ) ? true : array() );
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110 |
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111 | default:
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112 | $return = array();
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113 |
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114 | while( $row = pg_fetch_assoc( $rs ) )
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115 | $return[] = $row;
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116 |
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117 | return( $unique ? $return[0] : $return );
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118 | }
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119 | }
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120 |
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121 |
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122 | //@DEPRECATED
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123 | public function execResultSql( $sql, $unique = false ){
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124 | return $this->execSql( $sql, $unique );
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125 | }
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126 |
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127 | public function begin( $uri ) {
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128 |
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129 | if(!$this->con)
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130 | $this->open( $this->config );
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131 |
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132 | $this->error = false;
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133 | pg_query($this->con, "BEGIN WORK");
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134 | }
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135 |
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136 | public function commit($uri ) {
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137 |
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138 | if( $this->error !== false )
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139 | {
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140 | $error = $this->error;
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141 | $this->error = false;
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142 |
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143 | throw new Exception( $error );
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144 | }
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145 |
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146 | pg_query($this->con, "COMMIT");
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147 |
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148 | return( true );
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149 | }
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150 |
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151 | public function rollback( $uri ){
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152 |
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153 | pg_query($this->con, "ROLLBACK");
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154 | }
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155 |
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156 | public function open ( $config ){
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157 |
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158 | $this->config = $config;
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159 |
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160 | $rs = '';
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161 | $rs .= ( isset($this->config['host']) && $this->config['host'] ) ? ' host='.$this->config['host'] : '' ;
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162 | $rs .= ( isset($this->config['user']) && $this->config['user'] ) ? ' user='.$this->config['user'] : '' ;
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163 | $rs .= ( isset($this->config['password']) && $this->config['password'] ) ? ' password='.$this->config['password'] : '' ;
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164 | $rs .= ( isset($this->config['dbname']) && $this->config['dbname'] ) ? ' dbname='.$this->config['dbname'] : '' ;
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165 | $rs .= ( isset($this->config['port']) && $this->config['port'] ) ? ' port='.$this->config['port'] : '' ;
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166 |
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167 | if($this->con = pg_connect( $rs ))
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168 | return $this->con;
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169 |
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170 | throw new Exception('It was not possible to enable the target connection!');
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171 | //$this->con = pg_connect('host='.$config['host'].' user='.$config['user'].' password='.$config['password'].' dbname='.$config['dbname'].' options=\'--client_encoding=UTF8\'');
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172 | }
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173 |
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174 | public function close(){
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175 |
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176 | pg_close($this->con);
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177 |
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178 | $this->con = false;
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179 |
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180 | }
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181 |
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182 | public function setup(){}
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183 |
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184 | public function teardown(){}
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185 |
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186 | private static function parseInsertData( $data , $concept){
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187 |
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188 | $map = Config::get($concept, 'PostgreSQL.mapping');
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189 |
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190 | $ind = array();
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191 | $val = array();
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192 |
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193 | foreach ($data as $i => $v){
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194 | if(!isset($map[$i])) continue;
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195 |
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196 | $ind[] = $map[$i];
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197 | $val[] = '\''.addslashes($v).'\'';
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198 | }
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199 |
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200 | return '('.implode(',', $ind).') VALUES ('.implode(',', $val).') RETURNING '.$map['id'].' as id';
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201 | }
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202 |
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203 | private static function parseUpdateData( $data , &$map){
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204 |
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205 | $d = array();
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206 | foreach ($data as $i => $v)
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207 | {
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208 | if(!isset($map[$i])) continue;
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209 |
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210 | $d[] = $map[$i].' = \''.addslashes ($v).'\'';
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211 | }
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212 |
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213 | return 'SET '.implode(',', $d);
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214 | }
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215 |
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216 | private static function parseCriteria( $criteria , &$map , $query = '' ){
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217 |
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218 | if( isset($criteria["filter"]) && $criteria["filter"] !== NULL )
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219 | {
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220 | /*
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221 | * ex: array (
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222 | * [0] 'OR',
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223 | * [1] array( 'OR', array( array( '=', 'campo', 'valor' ) ),
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224 | * [2] array( '=', 'campo' , 'valor' ),
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225 | * [3] array( 'IN', 'campo', array( '1' , '2' , '3' ) )
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226 | * )
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227 | * OR
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228 | * array( '=' , 'campo' , 'valor' )
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229 | */
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230 | $query .= ($query === '') ? 'WHERE ('.self::parseFilter( $criteria['filter'] , $map).')' : ' AND ('.self::parseFilter( $criteria['filter'] , $map).')';
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231 | }
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232 | /*
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233 | * ex: array( 'table1' => 'table2' , 'table1' => 'table2')
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234 | *
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235 | */
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236 | if( isset($criteria["join"]) )
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237 | {
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238 | foreach ($criteria["join"] as $i => $v)
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239 | $query .= ' AND '.$i.' = '.$v.' ';
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240 | }
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241 |
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242 | if( isset($criteria["group"]) )
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243 | {
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244 | $query .= ' GROUP BY '.( is_array($criteria["group"]) ? implode(', ', $criteria["group"]) : $criteria["group"] ).' ';
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245 | }
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246 |
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247 | if( isset($criteria["order"]) )
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248 | {
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249 | $query .= ' ORDER BY '.self::parseOrder( $criteria["order"], $map ).' ';
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250 | }
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251 | if( isset($criteria["limit"]) )
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252 | {
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253 | $query .= ' LIMIT '. $criteria["limit"] .' ';
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254 | }
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255 | if( isset($criteria["offset"]) )
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256 | {
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257 | $query .= ' OFFSET '. $criteria["offset"] .' ';
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258 | }
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259 |
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260 | return $query;
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261 | }
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262 |
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263 | private static function parseFilter( $filter ,&$map){
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264 |
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265 | if( !is_array( $filter ) || count($filter) <= 0) return null;
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266 |
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267 | $op = self::parseOperator( array_shift( $filter ) );
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268 |
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269 | if( is_array($filter[0]) )
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270 | {
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271 | $nested = array();
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272 |
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273 | foreach( $filter as $i => $f )
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274 | if( $n = self::parseFilter( $f , $map))
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275 | $nested[] = $n;
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276 |
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277 |
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278 | return (count($nested) > 0 ) ? '('.implode( ' '.$op.' ', $nested ).')' : '';
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279 | }
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280 |
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281 | if(!isset($map[$filter[0]])) return '';
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282 |
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283 | $filter[0] = $map[$filter[0]];
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284 |
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285 | $igSuffix = $igPrefix = '';
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286 |
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287 | if( strpos( $op[0], 'i' ) === 0 )
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288 | {
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289 | $op[0] = substr( $op[0], 1 );
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290 | $filter[0] = 'upper("'.$filter[0].'")';
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291 | $igPrefix = 'upper(';
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292 | $igSuffix = ')';
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293 | }
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294 |
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295 | if( is_array($filter[1]) )
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296 | return( $filter[0].' '.$op[0]." ($igPrefix'".implode( "'$igSuffix,$igPrefix'", array_map("addslashes" , $filter[1]) )."'$igSuffix)" );
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297 |
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298 | return( $filter[0].' '.$op[0]." $igPrefix'".$op[1].addslashes( $filter[1] ).$op[2]."'$igSuffix" );
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299 | }
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300 |
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301 | private static function parseOperator( $op ){
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302 |
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303 | switch(strtolower($op))
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304 | {
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305 | case 'and':
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306 | case 'or': return( $op );
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307 | case 'in': return array( $op );
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308 | case '^': return array( 'like', '%', '' );
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309 | case '$': return array( 'like', '', '%' );
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310 | case '*': return array( 'like', '%', '%' );
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311 | case 'i^': return array( 'ilike', '%', '' );
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312 | case 'i$': return array( 'ilike', '', '%' );
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313 | case 'i*': return array( 'ilike', '%', '%' );
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314 | default : return array( $op, '', '' );
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315 | }
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316 | }
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317 |
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318 | private static function parseJustthese($justthese , &$map)
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319 | {
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320 |
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321 | if(!is_array($justthese)) //Caso seja um full select pegar todas as keys
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322 | $justthese = array_keys($map);
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323 |
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324 | $return = array();
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325 |
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326 | foreach ($justthese as &$value)
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327 | {
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328 | if(!isset($map[$value])) continue; //Escapa itens não existentes no mapa
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329 |
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330 | if(is_array($map[$value]))
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331 | $return['deepness'][$value] = $map[$value];
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332 | else
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333 | $return['select'][] = $map[$value] .' as "'. $value. '"';
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334 | }
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335 |
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336 | $return['select'] = implode(', ', $return['select']);
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337 | return $return;
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338 | }
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339 |
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340 | private static function parseOrder($order , &$map)
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341 | {
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342 |
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343 | if($notArray = !is_array($order)) //Caso seja um full select pegar todas as keys
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344 | $order = array( $order );
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345 |
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346 | $return = array();
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347 |
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348 | foreach ($order as &$value)
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349 | {
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350 | if(!isset($map[$value])) continue; //Escapa itens não existentes no mapa
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351 |
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352 | $value = $map[$value];
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353 | }
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354 |
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355 | return ( $notArray ? $order[0] : implode(', ', $order) );
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356 | }
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357 | }
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358 |
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359 | ?>
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