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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 | <?php /* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* # ***** BEGIN LICENSE BLOCK ***** # This file is part of Plume Framework, a simple PHP Application Framework. # Copyright (C) 2001-2007 Loic d'Anterroches and contributors. # # Plume Framework is free software; you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. # # Plume Framework is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # ***** END LICENSE BLOCK ***** */ /** * PostgreSQL connection class */ class Pluf_DB_PostgreSQL { /** * The connection resource. */ public $con_id ; /** * The prefix for the table names. */ public $pfx = '' ; /** * Debug mode. */ private $debug = false; /** * The last query, set with debug(). Used when an error is * returned. */ public $lastquery = '' ; /** * Name of the engine. */ public $engine = 'PostgreSQL' ; /** * Used by the model to convert the values from and to the * database. * * @see Pluf_DB_defaultTypecast */ public $type_cast = array (); /** * Current query cursor. */ private $cur = null; /** * Current search path. */ public $search_path = 'public' ; function __construct( $user , $pwd , $server , $dbname , $pfx = '' , $debug =false) { Pluf::loadFunction( 'Pluf_DB_defaultTypecast' ); $this ->type_cast = Pluf_DB_defaultTypecast(); $this ->type_cast[ 'Pluf_DB_Field_Boolean' ] = array ( 'Pluf_DB_PostgreSQL_BooleanFromDb' , 'Pluf_DB_BooleanToDb' ); $this ->type_cast[ 'Pluf_DB_Field_Compressed' ] = array ( 'Pluf_DB_PostgreSQL_CompressedFromDb' , 'Pluf_DB_PostgreSQL_CompressedToDb' ); $this ->debug( '* POSTGRESQL CONNECT' ); $cstring = '' ; if ( $server ) { $cstring .= 'host=' . $server . ' ' ; } $cstring .= 'dbname=' . $dbname . ' user=' . $user ; if ( $pwd ) { $cstring .= ' password=' . $pwd ; } $this ->debug = $debug ; $this ->pfx = $pfx ; $this ->cur = null; $this ->con_id = @pg_connect( $cstring ); if (! $this ->con_id) { throw new Exception( $this ->getError()); } } /** * Get the version of the PostgreSQL server. * * Requires PostgreSQL 7.4 or later. * * @return string Version string */ function getServerInfo() { $ver = pg_version( $this ->con_id); return $ver [ 'server' ]; } /** * Log the queries. Keep track of the last query and if in debug mode * keep track of all the queries in * $GLOBALS['_PX_debug_data']['sql_queries'] * * @param string Query to keep track * @return bool true */ function debug( $query ) { $this ->lastquery = $query ; if (! $this ->debug) return true; if (!isset( $GLOBALS [ '_PX_debug_data' ][ 'sql_queries' ])) $GLOBALS [ '_PX_debug_data' ][ 'sql_queries' ] = array (); $GLOBALS [ '_PX_debug_data' ][ 'sql_queries' ][] = $query ; return true; } function close() { if ( $this ->con_id) { pg_close( $this ->con_id); return true; } else { return false; } } function select( $query ) { $this ->debug( $query ); $this ->cur = @pg_query( $this ->con_id, $query ); if (! $this ->cur) { throw new Exception( $this ->getError()); } $res = array (); while ( $row = pg_fetch_assoc( $this ->cur)) { $res [] = $row ; } @pg_free_result( $this ->cur); $this ->cur = null; return $res ; } function execute( $query ) { $this ->debug( $query ); $this ->cur = @pg_query( $this ->con_id, $query ); if (! $this ->cur) { throw new Exception( $this ->getError()); } return true; } function getLastID() { $this ->debug( '* GET LAST ID' ); $res = $this ->select( 'SELECT lastval() AS last_id' ); return (int) $res [0][ 'last_id' ]; } /** * Returns a string ready to be used in the exception. * * @return string Error string */ function getError() { if ( $this ->cur) { return pg_result_error( $this ->cur). ' - ' . $this ->lastquery; } if ( $this ->con_id) { return pg_last_error( $this ->con_id). ' - ' . $this ->lastquery; } else { return pg_last_error(). ' - ' . $this ->lastquery; } } function esc( $str ) { return '\'' .pg_escape_string( $this ->con_id, $str ). '\'' ; } /** * Set the current search path. */ function setSearchPath( $search_path = 'public' ) { if (preg_match( '/[^\w\s\,]/' , $search_path )) { throw new Exception( 'The search path: "' . $search_path . '" is not valid.' ); } $this ->execute( 'SET search_path TO ' . $search_path ); $this ->search_path = $search_path ; return true; } /** * Quote the column name. * * @param string Name of the column * @return string Escaped name */ function qn( $col ) { return '"' . $col . '"' ; } /** * Start a transaction. */ function begin() { $this ->execute( 'BEGIN' ); } /** * Commit a transaction. */ function commit() { $this ->execute( 'COMMIT' ); } /** * Rollback a transaction. */ function rollback() { $this ->execute( 'ROLLBACK' ); } function __toString() { return '<Pluf_DB_PostgreSQL(' . $this ->con_id. ')>' ; } } function Pluf_DB_PostgreSQL_BooleanFromDb( $val ) { if (! $val ) { return false; } return ( strtolower ( substr ( $val , 0, 1)) == 't' ); } function Pluf_DB_PostgreSQL_CompressedToDb( $val , $con ) { if ( is_null ( $val )) { return 'NULL' ; } return "'" .pg_escape_bytea(gzdeflate( $val , 9)). "'" ; } function Pluf_DB_PostgreSQL_CompressedFromDb( $val ) { return ( $val ) ? gzinflate(pg_unescape_bytea( $val )) : $val ; } |