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<?php
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/**
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* SqlImport.php
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*
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* @category Core
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* @package Core_Database
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* @copyright Manuela v.d.Decken <manuela@isteam.de>
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* @author Manuela v.d.Decken <manuela@isteam.de>
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* @license http://www.gnu.org/licenses/gpl.html GPL License
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2123
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darkviper
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* @version 0.0.2
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darkviper
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* @revision $Revision: 2070 $
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* @lastmodified $Date: 2014-01-03 02:21:42 +0100 (Fr, 03 Jan 2014) $
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* @since File available since 30.11.2014
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* @description can handle different actions with SQL-Import files
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*/
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darkviper
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class SqlImport
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{
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/** WbDatabase object */
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protected $oDb = null;
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/** valide structure file to use for import */
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protected $sStructFile = '';
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/** valide TablePrefix to use for import */
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protected $sTablePrefix = '';
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/** default Collation to use for import of chars/text */
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protected $sCollation = 'utf8_unicode_ci';
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/** default engine for tables */
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protected $sEngine = 'MyISAM';
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/** collected error messages */
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protected $aErrMsg = array();
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/** possible actions for doImport() */
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protected $aActions = array(
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'uninstall',
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'install',
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'upgrade'
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);
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/** collected additional replacements pairs */
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protected $aAdditionalReplacements = array('key'=>array(), 'value'=>array());
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/** possible engines to use */
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protected $aEngineTypesAvail = array(
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'myisam' => 'MyISAM',
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'innodb' => 'InnoDB'
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);
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/** SQL objects witch can be handled */
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protected $aAvailSqlObjects = array(
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'TABLE',
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'VIEW',
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'INDEX',
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'PROCEDURE',
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'FUNCTION',
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'TRIGGER',
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'EVENT'
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);
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/** prepared batch lists for all SQL statements */
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protected $aBatchLists = array();
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/* ****************************************************************** */
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/**
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* Constructor
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* @param WbDatabase $oDb
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* @param string $sStructFile
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*/
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public function __construct(WbDatabase $oDb, $sStructFile)
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{
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$this->oDb = $oDb;
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$this->sTablePrefix = $oDb->TablePrefix;
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$sStructFile = str_replace('\\', '/', $sStructFile);
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if (!file_exists($sStructFile)) {
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throw new SqlImportException('no existing import file defined');
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}
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$this->sStructFile = $sStructFile;
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}
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// ---------------------------------------------------------------------
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/**
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* Start and execute the import
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* @param string $sAction
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* @return boolean
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*/
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public function doImport($sAction)
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{
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try{
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$sAction = $this->getSanitizeAction($sAction);
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$aRawCommandSource = $this->getSorceFile($this->sStructFile);
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$aSqlCommandList = $this->doNormalizeSource($aRawCommandSource);
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$aSqlCommandList = $this->replacePlaceholders($aSqlCommandList);
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$this->splitStatementsListIntoBatchLists($aSqlCommandList, $sAction);
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unset($aRawCommandSource, $aSqlCommandList); // free never needed memory
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$this->executeBatchStack();
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} catch(SqlImportException $e) {
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$this->aErrMsg[] = (string)$e;
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return false;
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}
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return true;
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}
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// ---------------------------------------------------------------------
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/**
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* Sanitize Action and get a valid value
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* @param string $sAction simple command or filename/filepath
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* @return string valid command
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*/
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protected function getSanitizeAction($sAction)
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{
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$sAction = strtolower( // extract command from given argument
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preg_replace(
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'/^.*?('.implode('|', $this->aActions).')(\.php)?$/i',
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'$1',
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$sAction
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)
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);
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// return 'install' if no command found
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return ($sAction == '' ? 'install' : $sAction);
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}
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// ---------------------------------------------------------------------
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/**
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* Get content of structure file
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* @param string $sStructFile filepath of the structure file
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* @return array raw list of commands (including comments)
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*/
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protected function getSorceFile($sStructFile)
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{
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if (!$sStructFile) {
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// no file found so ignore import method
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throw new SqlImportException('no import file defined');
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}
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if (!is_readable($sStructFile)) {
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// file fond but it's not readable
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throw new SqlImportException('not readable file ['.$sStructFile.']');
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}
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if (!($aCommandSource = file($sStructFile, FILE_SKIP_EMPTY_LINES|FILE_IGNORE_NEW_LINES))) {
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// file fond but it's not readable
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throw new SqlImportException('unable to import file ['.$sStructFile.']');
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}
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return $aCommandSource;
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}
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// ---------------------------------------------------------------------
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/**
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* Normalize SQL statements from source
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* @param array $aSqlCommandSource array of all lines from source file
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* @return array list of complete SQL statements with placeholders
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* @description concate each Statement into one line; remove all comments; remove possible BOM
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*/
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protected function doNormalizeSource(array $aRawCommandSource)
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{
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$aSqlCommandList = array();
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// remove possible ByteOrderMark
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$aRawCommandSource[0] = preg_replace('/^[\xAA-\xFF]{3}/', '', $aRawCommandSource[0]);
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// init empty statement line
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$sStatementLine = '';
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// iterate through all lines of the source
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foreach ($aRawCommandSource as $iKey => $sRawLine) {
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// remove trailing and leading whitespaces
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$sRawLine = trim($sRawLine);
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// skip line if it's a comment
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if (preg_match('/^--/', $sRawLine)) { continue; }
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// attach line to buffer
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$sStatementLine .= ' '.$sRawLine;
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// detect end of statement
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if ((substr($sStatementLine,-1,1) == ';')) {
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$aSqlCommandList[] = trim($sStatementLine);
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$sStatementLine = '';
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}
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}
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return $aSqlCommandList;
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}
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// ---------------------------------------------------------------------
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/**
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* Replace all Placeholders in all SQL statements
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* @param array $aSqlCommandList list of SQL statements with placeholders
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* @return array finished list of SQL statements
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*/
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protected function replacePlaceholders(array $aSqlCommandList)
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{
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// sanitize arguments and extract Charset from Collation
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$aTmp = preg_split('/_/', $this->sCollation, null, PREG_SPLIT_NO_EMPTY);
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$sCharset = $aTmp[0];
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// get from addReplacements
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$aSearch = $this->aAdditionalReplacements['key'];
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/* *** ATTENTION:: Do Not Change The Order Of Search-Replace Statements !! *** */
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// define basic array of searches
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$aSearch[] = '/\{TABLE_PREFIX\}/'; /* step 0 */
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$aSearch[] = '/\{FIELD_CHARSET\}/'; /* step 1 */
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$aSearch[] = '/\{FIELD_COLLATION\}/'; /* step 2 */
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$aSearch[] = '/\{TABLE_ENGINE\}/'; /* step 3 */
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$aSearch[] = '/\{TABLE_ENGINE=([a-zA-Z_0-9]*)\}/'; /* step 4 */
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$aSearch[] = '/\{CHARSET\}/'; /* step 5 */
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$aSearch[] = '/\{COLLATION\}/'; /* step 6 */
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// get from addReplacements
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$aReplace = $this->aAdditionalReplacements['value'];
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// define basic array of replacements
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$aReplace[] = $this->sTablePrefix; /* step 0 */
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$aReplace[] = ' CHARACTER SET {CHARSET}'; /* step 1 */
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$aReplace[] = ' COLLATE {COLLATION}'; /* step 2 */
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$aReplace[] = ' {TABLE_ENGINE='.$this->sEngine.'}'; /* step 3 */
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$aReplace[] = ' ENGINE=$1 DEFAULT CHARSET={CHARSET} COLLATE={COLLATION}'; /* step 4 */
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$aReplace[] = $sCharset; /* step 5 */
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$aReplace[] = $this->sCollation; /* step 6 */
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// replace placeholders in statement
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$aSqlCommandList = preg_replace($aSearch, $aReplace, $aSqlCommandList);
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return $aSqlCommandList;
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}
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// ---------------------------------------------------------------------
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/**
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* Split list of commands into a batch list structure
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* @param array $aSqlCommandList normalized list of SQL statements
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* @param string $sAction a valid name of an action
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*
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*/
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protected function splitStatementsListIntoBatchLists(array $aSqlCommandList, $sAction)
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{
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// initialize lists
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$this->aBatchLists = array(
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'Set' => array(
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'Header' => array(), // all SET before DROP/CREATE/ALTER
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'Footer' => array() // all SET after DROP/CREATE/ALTER
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),
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'Drop' => array(),
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'Create' => array(),
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'Alter' => array()
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);
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$sSetType = 'Header'; // start with 'before'
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foreach ($aSqlCommandList as $sSqlCommand) {
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if (preg_match('/^\s*DROP\s*/si', $sSqlCommand)) {
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switch ($sAction) {
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case 'uninstall':
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case 'install';
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$this->aBatchLists['Drop'][] = $sSqlCommand;
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break;
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default: // skip DROP TABLE
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break;
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}
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$sSetType = 'Footer'; // switch to 'after'
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} elseif (preg_match('/^\s*ALTER\s*/si', $sSqlCommand)) {
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switch ($sAction) {
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case 'upgrade':
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case 'install';
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$this->aBatchLists['Alter'][] = $sSqlCommand;
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break;
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default: // skip ALTER TABLE
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break;
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}
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$sSetType = 'Footer'; // switch to 'after'
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} elseif (preg_match('/^\s*\/\*\![^\s]+\s+SET\s|^\s*SET\s*/si', $sSqlCommand)) {
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$this->aBatchLists['Set'][$sSetType][] = $sSqlCommand;
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} else {
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switch ($sAction) {
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case 'upgrade':
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case 'install';
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$this->aBatchLists['Create'][] = $sSqlCommand;
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break;
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default: // skip CREATE TABLE
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break;
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270 |
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}
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$sSetType = 'Footer'; // switch to 'after'
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}
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}
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}
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// ---------------------------------------------------------------------
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/**
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277 |
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* Scan database for all matching tables
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* @return array List of matchng tables
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*/
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protected function getAllExistingTablenames()
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281 |
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{
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$aRetval = array();
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$sql = 'SHOW TABLES LIKE \''.addcslashes($this->sTablePrefix, '_%').'%\'';
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if ((($oRecordSet = $this->oDb->doQuery($sql)))) {
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while (($aRecord = $oRecordSet->fetchArray(MYSQLI_NUM))) {
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$aRetval[] = $aRecord[0];
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}
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288 |
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}
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289 |
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return $aRetval;
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290 |
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}
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291 |
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// ---------------------------------------------------------------------
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292 |
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/**
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293 |
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* Execute a stack of batch lists with SQL statements
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294 |
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* @param array $aAllowed list of tables which are allowed to be altered
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295 |
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* @return boolean
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296 |
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*/
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297 |
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protected function executeBatchStack()
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298 |
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{
|
299 |
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if ($this->aBatchLists['Set']['Header']) {
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300 |
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$this->executeBatchList($this->aBatchLists['Set']['Header']);
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301 |
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}
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302 |
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if ($this->aBatchLists['Drop']) {
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303 |
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$this->executeBatchList($this->aBatchLists['Drop']);
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304 |
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}
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305 |
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if ($this->aBatchLists['Create']) {
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306 |
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$aTablesListBeforeCreate = $this->getAllExistingTablenames();
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$this->executeBatchList($this->aBatchLists['Create']);
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$aTablesListAfterCreate = $this->getAllExistingTablenames();
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309 |
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}
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310 |
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if ($this->aBatchLists['Alter']) {
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$this->executeBatchList(
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$this->aBatchLists['Alter'],
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array_diff($aTablesListAfterCreate, $aTablesListBeforeCreate)
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);
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}
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if ($this->aBatchLists['Set']['Footer']) {
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$this->executeBatchList($this->aBatchLists['Set']['Footer']);
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}
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319 |
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}
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320 |
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// ---------------------------------------------------------------------
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321 |
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/**
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322 |
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* Execute a list of SQL statements
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323 |
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* @param array $aList the list to execute
|
324 |
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* @param array $aAllowedTables list with allowed tables
|
325 |
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* @description Execute a list of SQL statements. The list can be restricted
|
326 |
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* using $aAllowedTables
|
327 |
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*/
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328 |
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|
protected function executeBatchList(array $aList, array $aAllowedTables = null)
|
329 |
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{
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330 |
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foreach ($aList as $sSql) {
|
331 |
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|
if ($aAllowedTables) {
|
332 |
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// extract name of table
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333 |
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$sTableName = preg_replace('/^[^\`]*?\`([^\`]*?)\`.*$/si', '$1', $sSql);
|
334 |
|
|
if (!in_array($sTableName, $aAllowedTables)) {
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335 |
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// if table is not in allowed list then use next statement
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336 |
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continue;
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337 |
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}
|
338 |
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}
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339 |
|
|
// execute statement
|
340 |
|
|
if (!$this->oDb->doQuery(trim($sSql))) {
|
341 |
|
|
throw new SqlImportException($this->oDb->getError());
|
342 |
|
|
break;
|
343 |
|
|
}
|
344 |
|
|
}
|
345 |
|
|
}
|
346 |
|
|
// ---------------------------------------------------------------------
|
347 |
|
|
/**
|
348 |
2105
|
darkviper
|
* Add Key-Value pairs for additional placeholders
|
349 |
|
|
* @param string $sKey
|
350 |
|
|
* @param mixed $sValue
|
351 |
|
|
*/
|
352 |
|
|
public function addReplacement($sKey, $sValue = '')
|
353 |
|
|
{
|
354 |
|
|
$sKey = strtoupper(preg_replace('/([a-z0-9])([A-Z])/', '\1_\2', ltrim($sKey, 'a..z')));
|
355 |
2123
|
darkviper
|
$this->aAdditionalReplacements['key'][] = '/\{'.$sKey.'\}/';
|
356 |
|
|
$this->aAdditionalReplacements['value'][] = $sValue;
|
357 |
2105
|
darkviper
|
}
|
358 |
2123
|
darkviper
|
// ---------------------------------------------------------------------
|
359 |
2105
|
darkviper
|
/**
|
360 |
|
|
* define another collation then default utf8_unicode_ci
|
361 |
|
|
* @param string $sCollation
|
362 |
|
|
* @return boolean
|
363 |
|
|
*/
|
364 |
|
|
public function setDefaultCollation($sCollation = 'utf8_unicode_ci')
|
365 |
|
|
{
|
366 |
|
|
$bRetval = false;
|
367 |
|
|
// test if selected collation is available on current server.
|
368 |
2121
|
darkviper
|
$sql = 'SHOW COLLATION LIKE \''.$this->oDb->escapeString(addcslashes($sCollation, '_%')).'\'';
|
369 |
2105
|
darkviper
|
if (($oAvailCollations = $this->oDb->doQuery($sql))) {
|
370 |
|
|
if (($oAvailCollations->numRows())) {
|
371 |
|
|
//use new collation
|
372 |
|
|
$this->sCollation = $sCollation;
|
373 |
|
|
$bRetval = true;
|
374 |
|
|
}
|
375 |
|
|
}
|
376 |
|
|
return $bRetval;
|
377 |
|
|
}
|
378 |
2123
|
darkviper
|
// ---------------------------------------------------------------------
|
379 |
2105
|
darkviper
|
/**
|
380 |
2123
|
darkviper
|
* define another default engine then 'MyISAM'
|
381 |
2105
|
darkviper
|
* @param string $sEngine
|
382 |
|
|
* @return boolean
|
383 |
|
|
*/
|
384 |
|
|
public function setDefaultEngine($sEngine ='MyISAM')
|
385 |
|
|
{
|
386 |
|
|
$bRetval = false;
|
387 |
|
|
if (isset($this->aEngineTypesAvail[strtolower($sEngine)])) {
|
388 |
|
|
// use new engine
|
389 |
|
|
$this->sEngine = $this->aEngineTypesAvail[strtolower($sEngine)];
|
390 |
|
|
$bRetval = true;
|
391 |
|
|
}
|
392 |
|
|
return $bRetval;
|
393 |
|
|
}
|
394 |
2123
|
darkviper
|
// ---------------------------------------------------------------------
|
395 |
2105
|
darkviper
|
/**
|
396 |
|
|
* define another prefix then default in Wbdatabase
|
397 |
|
|
* @param string $sTablePrefix
|
398 |
|
|
* @return boolean
|
399 |
|
|
*/
|
400 |
|
|
public function setTablePrefix($sTablePrefix = '')
|
401 |
|
|
{
|
402 |
|
|
$bRetval = false;
|
403 |
|
|
if (
|
404 |
|
|
// Prefix must be empty or matching allowed table names
|
405 |
|
|
$sTablePrefix == '' ||
|
406 |
|
|
preg_match('/^[a-z][a-z0-9_]*$/i', $sTablePrefix)
|
407 |
|
|
) {
|
408 |
|
|
// use new TablePrefix
|
409 |
|
|
$this->sTablePrefix = $sTablePrefix;
|
410 |
|
|
$bRetval = true;
|
411 |
|
|
}
|
412 |
|
|
return $bRetval;
|
413 |
|
|
}
|
414 |
2123
|
darkviper
|
// ---------------------------------------------------------------------
|
415 |
2105
|
darkviper
|
/**
|
416 |
|
|
* return errorstrings, concatet by LF
|
417 |
|
|
* @return string
|
418 |
|
|
*/
|
419 |
|
|
public function getError()
|
420 |
|
|
{
|
421 |
2123
|
darkviper
|
return implode("\n", $this->aErrMsg);
|
422 |
2105
|
darkviper
|
}
|
423 |
|
|
|
424 |
2123
|
darkviper
|
} // end of class SqlImport
|
425 |
|
|
// ---------------------------------------------------------------------
|
426 |
|
|
// ---------------------------------------------------------------------
|
427 |
2105
|
darkviper
|
|
428 |
2123
|
darkviper
|
class SqlImportException extends AppException {}
|