dbutil.inc
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<?php
/**
* $Id$
*
* Database access utility class
*
* Copyright (c) 2004 Jam Warehouse http://www.jamwarehouse.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @version $Revision$
* @author Neil Blakey-Milner, Jam Warehouse (Pty) Ltd, South Africa
* @package lib.database
*/
require_once ('PEAR.php');
class DBUtil {
function &getDB($db = null) {
global $default;
if (is_null($db)) {
return $default->_db;
}
return $db;
}
function runQuery($query, $db = null) {
global $default;
$aParams = null;
$db =& DBUtil::getDB($db);
if (is_array($query)) {
$sQuery = $query[0];
$aParams = $query[1];
} else {
$sQuery = $query;
}
$res = $db->query($sQuery, $aParams);
$default->queryLog->debug('Query: ' . DBUtil::lastQuery($db));
return $res;
}
function getOneResult($query, $db = null) {
$result = DBUtil::runQuery($query, $db);
if (PEAR::isError($result)) {
DBUtil::logQueryError($query, $result);
return $result;
}
$aRow = $result->fetchRow();
$result->free();
return $aRow;
}
function getOneResultKey($query, $key, $db = null) {
$aRow = DBUtil::getOneResult($query, $db);
if (PEAR::isError($aRow)) {
return $aRow;
}
return $aRow[$key];
}
function getResultArray($query, $db = null) {
$result = DBUtil::runQuery($query, $db);
if (PEAR::isError($result)) {
DBUtil::logQueryError($query, $result);
return $result;
}
$aReturn = array();
while ($aRow = $result->fetchRow()) {
$aReturn[] = $aRow;
}
$result->free();
return $aReturn;
}
function getResultArrayKey($query, $key, $db = null) {
$result = DBUtil::runQuery($query, $db);
if (PEAR::isError($result)) {
DBUtil::logQueryError($query, $result);
return $result;
}
$aReturn = array();
while ($aRow = $result->fetchRow()) {
$aReturn[] = $aRow[$key];
}
$result->free();
return $aReturn;
}
function logQueryError($query, $result) {
global $default;
$default->log->error($result->toString());
$default->queryLog->error($result->toString());
}
function nextId($seqname, $ondemand = false, $db = null) {
$db =& DBUtil::getDB($db);
return $db->nextId($seqname, $ondemand);
}
function runQueries($aQueries, $db = null) {
foreach ($aQueries as $sQuery) {
$res = DBUtil::runQuery($sQuery, $db);
if (PEAR::isError($res)) {
return $res;
}
}
return true;
}
function &autoInsert($sTable, $aFieldValues, $db = null) {
global $default;
// $default->log->debug('AutoInsert called for table ' . $sTable);
$db =& DBUtil::getDB();
if (!array_key_exists('id', $aFieldValues)) {
$aFieldValues['id'] = DBUtil::nextId($sTable, null, $db);
}
$res = $db->autoExecute($sTable, $aFieldValues);
$default->queryLog->debug('Query: ' . DBUtil::lastQuery($db));
if ($res === DB_OK) {
return $aFieldValues['id'];
}
if (PEAR::isError($res)) {
return $res;
}
return PEAR::raiseError('Unknown return value for autoInsert');
}
function &autoUpdate($sTable, $aFieldValues, $iId, $db = null) {
global $default;
// $default->log->debug('AutoUpdate called for table ' . $sTable . ' with id ' . $iId);
$db =& DBUtil::getDB();
$res = $db->autoExecute($sTable, $aFieldValues, DB_AUTOQUERY_UPDATE, 'id = ' . $iId);
$default->queryLog->debug('Query: ' . DBUtil::lastQuery($db));
if ($res === DB_OK) {
return $res;
}
if (PEAR::isError($res)) {
return $res;
}
return PEAR::raiseError('Unknown return value for autoUpdate');
}
function &whereUpdate($sTable, $aFieldValues, $aWhereFieldValues, $db = null) {
global $default;
//$default->log->debug('WhereUpdate called for table ' . $sTable);
$db =& DBUtil::getDB();
$aWhereFields = array();
foreach (array_keys($aWhereFieldValues) as $k) {
$aWhereFields[] = $k . ' = ?';
}
$sWhere = join(' AND ', $aWhereFields);
$aValues = array_merge(array_values($aFieldValues), array_values($aWhereFieldValues));
$sth = $db->autoPrepare($sTable, array_keys($aFieldValues), DB_AUTOQUERY_UPDATE, $sWhere);
$res =& $db->execute($sth, array_values($aValues));
$db->freePrepared($sth);
$default->queryLog->debug('Query: ' . DBUtil::lastQuery($db));
if ($res === DB_OK) {
return $res;
}
if (PEAR::isError($res)) {
return $res;
}
return PEAR::raiseError('Unknown return value for whereUpdate');
}
function &lastQuery($db = null) {
$db =& DBUtil::getDB();
return $db->last_query;
}
function &autoDelete($sTable, $iId, $db = null) {
global $default;
// $default->log->debug('AutoDelete called for table ' . $sTable . ' with id ' . $iId);
$db =& DBUtil::getDB();
$sQuery = "DELETE FROM " . $sTable . " WHERE id = ?";
$aParams = array($iId);
return DBUtil::runQuery(array($sQuery, $aParams), $db);
}
function ¶mArray($aArray) {
$iNumIds = count($aArray);
return join(",", array_fill(0, $iNumIds, '?'));
}
function &escapeSimple($sString, $db = null) {
$db =& DBUtil::getDB();
return $db->escapeSimple($sString);
}
function compactQuery($sQuery) {
return str_replace("\n", " ", $sQuery);
}
}
?>