<?php
/*
 *  $Id: OCI8DatabaseInfo.php,v 1.11 2006/01/17 19:44:40 hlellelid Exp $
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information please see
 * <http://creole.phpdb.org>.
 */
 
require_once 'creole/metadata/DatabaseInfo.php';

/**
 * Oracle (OCI8) implementation of DatabaseInfo.
 * 
 * @author    Hans Lellelid <hans@xmpl.org>
 * @version   $Revision: 1.11 $
 * @package   creole.drivers.oracle.metadata
 */ 
class OCI8DatabaseInfo extends DatabaseInfo {
    
    private $schema;
           
    public function __construct(Connection $conn) {
        parent::__construct($conn);
        
        $dsn = $conn->getDSN();
        
        if (isset($dsn['schema'])) {
        	$this->schema = $dsn['schema']; 
        } else {
			// For Changing DB/Schema in Meta Data Interface
	        $this->schema = $dsn['username'];
		}
        
		$this->schema = strtoupper( $this->schema );
    }
    
    public function getSchema() {
        return $this->schema;
    }
    
    /**
     * @throws SQLException
     * @return void
     */
    protected function initTables()
    {
        include_once 'creole/drivers/oracle/metadata/OCI8TableInfo.php';
        
        $sql = "SELECT table_name
            FROM all_tables
            WHERE owner = '{$this->schema}'";

        $statement = @oci_parse($this->conn->getResource(),$sql);

        $success = @oci_execute($statement,OCI_DEFAULT);        
        if (!$success) {
            throw new SQLException("Could not get tables", $this->conn->getResource()->nativeError($statement));
        }
        while ( $statement && $row = oci_fetch_assoc( $statement ) )
		{
            $row = array_change_key_case($row,CASE_LOWER);
            $this->tables[strtoupper($row['table_name'])] = new OCI8TableInfo($this,$row['table_name']);
        }
    }            
    
    /**
     * Oracle supports sequences.
     *
     * @return void 
     * @throws SQLException
     */
    protected function initSequences()
    {
        // throw new SQLException("MySQL does not support sequences natively.");
    }
        
}