2012-10-10 22:49:47 +04:00
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<?php
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/**
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* Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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class OC_DB_MDB2SchemaReader {
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static protected $DBNAME;
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static protected $DBTABLEPREFIX;
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public static function loadSchemaFromFile($file) {
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self::$DBNAME = OC_Config::getValue( "dbname", "owncloud" );
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self::$DBTABLEPREFIX = OC_Config::getValue( "dbtableprefix", "oc_" );
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$schema = new \Doctrine\DBAL\Schema\Schema();
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$xml = simplexml_load_file($file);
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foreach($xml->children() as $child) {
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switch($child->getName()) {
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case 'name':
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$name = (string)$child;
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$name = str_replace( '*dbname*', self::$DBNAME, $name );
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break;
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case 'create':
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case 'overwrite':
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case 'charset':
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break;
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case 'table':
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self::loadTable($schema, $child);
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break;
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default:
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var_dump($child->getName());
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}
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}
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return $schema;
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}
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private static function loadTable($schema, $xml) {
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foreach($xml->children() as $child) {
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switch($child->getName()) {
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case 'name':
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$name = (string)$child;
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$name = str_replace( '*dbprefix*', self::$DBTABLEPREFIX, $name );
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$table = $schema->createTable($name);
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break;
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case 'create':
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case 'overwrite':
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case 'charset':
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break;
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case 'declaration':
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self::loadDeclaration($table, $child);
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break;
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default:
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var_dump($child->getName());
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}
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}
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}
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private static function loadDeclaration($table, $xml) {
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foreach($xml->children() as $child) {
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switch($child->getName()) {
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case 'field':
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self::loadField($table, $child);
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break;
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case 'index':
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self::loadIndex($table, $child);
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break;
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default:
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var_dump($child->getName());
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}
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}
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}
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private static function loadField($table, $xml) {
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$options = array();
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foreach($xml->children() as $child) {
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switch($child->getName()) {
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case 'name':
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$name = (string)$child;
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break;
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case 'type':
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$type = (string)$child;
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switch($type) {
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case 'text':
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$type = 'string';
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break;
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case 'clob':
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$type = 'text';
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break;
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case 'timestamp':
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$type = 'datetime';
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break;
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// TODO
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return;
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}
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break;
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case 'length':
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$length = (string)$child;
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$options['length'] = $length;
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break;
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case 'unsigned':
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$unsigned = self::asBool($child);
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$options['unsigned'] = $unsigned;
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break;
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case 'notnull':
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$notnull = self::asBool($child);
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$options['notnull'] = $notnull;
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break;
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case 'autoincrement':
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$autoincrement = self::asBool($child);
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$options['autoincrement'] = $autoincrement;
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break;
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case 'default':
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$default = (string)$child;
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$options['default'] = $default;
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break;
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default:
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var_dump($child->getName());
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}
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}
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if (isset($name) && isset($type)) {
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if ($name == 'x') {
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var_dump($name, $type, $options);
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echo '<pre>';
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debug_print_backtrace();
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}
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if (empty($options['default'])) {
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if ($type == 'integer') {
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if (empty($options['default'])) {
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2012-10-26 12:51:21 +04:00
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if (empty($options['notnull'])) {
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unset($options['default']);
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}
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else {
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$options['default'] = 0;
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}
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2012-10-10 22:49:47 +04:00
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}
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}
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if (!empty($options['autoincrement'])) {
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unset($options['default']);
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}
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}
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if ($type == 'integer') {
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$length = $options['length'];
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if ($length == 1) {
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$type = 'boolean';
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}
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else if ($length < 4) {
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$type = 'smallint';
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}
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else if ($length > 4) {
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$type = 'bigint';
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}
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}
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$table->addColumn($name, $type, $options);
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if (!empty($options['autoincrement'])
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&& !empty($options['notnull'])) {
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$table->setPrimaryKey(array($name));
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}
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}
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}
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private static function loadIndex($table, $xml) {
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$name = null;
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$fields = array();
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foreach($xml->children() as $child) {
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switch($child->getName()) {
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case 'name':
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$name = (string)$child;
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break;
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case 'primary':
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$primary = self::asBool($child);
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break;
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case 'unique':
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$unique = self::asBool($child);
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break;
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case 'field':
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foreach($child->children() as $field) {
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switch($field->getName()) {
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case 'name':
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$field_name = (string)$field;
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$fields[] = $field_name;
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break;
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case 'sorting':
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break;
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default:
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var_dump($field->getName());
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}
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}
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break;
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default:
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var_dump($child->getName());
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}
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}
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if (!empty($fields)) {
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if (isset($primary) && $primary) {
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$table->setPrimaryKey($fields, $name);
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} else
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if (isset($unique) && $unique) {
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$table->addUniqueIndex($fields, $name);
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} else {
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$table->addIndex($fields, $name);
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}
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} else {
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var_dump($name, $fields);
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}
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}
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private static function asBool($xml) {
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$result = (string)$xml;
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if ($result == 'true') {
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$result = true;
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} else
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if ($result == 'false') {
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$result = false;
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}
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return (bool)$result;
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}
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}
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