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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Test
  * @subpackage PHPUnit
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Db_Adapter_Abstract
  */
 // require_once "Zend/Db/Adapter/Abstract.php";
 
 /**
  * Generic Metadata accessor for the Zend_Db adapters
  *
  * @uses       PHPUnit_Extensions_Database_DB_IMetaData
  * @category   Zend
  * @package    Zend_Test
  * @subpackage PHPUnit
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Test_PHPUnit_Db_Metadata_Generic implements PHPUnit_Extensions_Database_DB_IMetaData
 {
     /**
      * Zend_Db Connection
      *
      * @var Zend_Db_Adapter_Abstract
      */
     protected $_connection;
 
     /**
      * Schemaname
      *
      * @var string
      */
     protected $_schema;
 
     /**
      * Cached Table metadata
      *
      * @var array
      */
     protected $_tableMetadata = array();
 
     /**
      * Creates a new database meta data object using the given pdo connection
      * and schema name.
      *
      * @param Zend_Db_Adapter_Abstract $db
      * @param string $schema
      */
     public final function __construct(Zend_Db_Adapter_Abstract $db, $schema)
     {
         $this->_connection = $db;
         $this->_schema     = $schema;
     }
 
     /**
      * List Tables
      *
      * @return array
      */
     public function getTableNames()
     {
         return $this->_connection->listTables();
     }
 
     /**
      * Get Table information
      *
      * @param  string $tableName
      * @return array
      */
     protected function getTableDescription($tableName)
     {
         if(!isset($this->_tableMetadata[$tableName])) {
             $this->_tableMetadata[$tableName] = $this->_connection->describeTable($tableName);
         }
         return $this->_tableMetadata[$tableName];
     }
 
     /**
      * Returns an array containing the names of all the columns in the
      * $tableName table,
      *
      * @param string $tableName
      * @return array
      */
     public function getTableColumns($tableName)
     {
         $tableMeta = $this->getTableDescription($tableName);
         $columns = array_keys($tableMeta);
         return $columns;
     }
 
     /**
      * Returns an array containing the names of all the primary key columns in
      * the $tableName table.
      *
      * @param string $tableName
      * @return array
      */
     public function getTablePrimaryKeys($tableName)
     {
         $tableMeta = $this->getTableDescription($tableName);
 
         $primaryColumnNames = array();
         foreach($tableMeta AS $column) {
             if($column['PRIMARY'] == true) {
                 $primaryColumnNames[] = $column['COLUMN_NAME'];
             }
         }
         return $primaryColumnNames;
     }
 
     /**
      * Returns the name of the default schema.
      *
      * @return string
      */
     public function getSchema()
     {
         return $this->_schema;
     }
 
     /**
      * Returns a quoted schema object. (table name, column name, etc)
      *
      * @param string $object
      * @return string
      */
     public function quoteSchemaObject($object)
     {
         return $this->_connection->quoteIdentifier($object);
     }
 
     /**
      * Returns true if the rdbms allows cascading
      *
      * @return bool
      */
     public function allowsCascading()
     {
         return false;
     }
 
     /**
      * Disables primary keys if rdbms does not allow setting them otherwise
      *
      * @param string $tableName
      */
     public function disablePrimaryKeys($tableName)
     {
         // Implemented only to match new DBUnit interface
     }
 
     /**
      * Reenables primary keys after they have been disabled
      *
      * @param string $tableName
      */
     public function enablePrimaryKeys($tableName)
     {
         // Implemented only to match new DBUnit interface
     }
 }