<?php
/*
 *  $Id$
 *
 * 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, see
 * <http://www.phpdoctrine.com>.
 */
Doctrine::autoload('Doctrine_Import');
/**
 * @package     Doctrine
 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
 * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
 * @version     $Revision$
 * @category    Object Relational Mapping
 * @link        www.phpdoctrine.com
 * @since       1.0
 */
class Doctrine_Import_Oracle extends Doctrine_Import
{
    /**
     * lists all databases
     *
     * @return array
     */
    public function listDatabases()
    {
        if ( ! $this->conn->options['emulate_database']) {
            return $this->conn->raiseError(Doctrine::ERROR_UNSUPPORTED, null, null,
                'database listing is only supported if the "emulate_database" option is enabled', __FUNCTION__);
        }

        if ($this->conn->options['database_name_prefix']) {
            $query = 'SELECT SUBSTR(username, ';
            $query.= (strlen($this->conn->options['database_name_prefix'])+1);
            $query.= ") FROM sys.dba_users WHERE username LIKE '";
            $query.= $this->conn->options['database_name_prefix']."%'";
        } else {
            $query = 'SELECT username FROM sys.dba_users';
        }
        $result2 = $this->conn->standaloneQuery($query, array('text'), false);
        $result  = $result2->fetchCol();

        $result2->free();
        return $result;
    }
    /**
     * lists all availible database functions
     *
     * @return array
     */
    public function listFunctions()
    {
        $query = "SELECT name FROM sys.user_source WHERE line = 1 AND type = 'FUNCTION'";

        return $this->conn->fetchColumn($query);
    }
    /**
     * lists all database triggers
     *
     * @param string|null $database
     * @return array
     */
    public function listTriggers($database = null)
    {

    }
    /**
     * lists all database sequences
     *
     * @param string|null $database
     * @return array
     */
    public function listSequences($database = null)
    {
        $query = "SELECT sequence_name FROM sys.user_sequences";
        $tableNames = $this->conn->fetchColumn($query);

        return array_map(array($this->conn, 'fixSequenceName'), $tableNames);
    }
    /**
     * lists table constraints
     *
     * @param string $table     database table name
     * @return array
     */
    public function listTableConstraints($table)
    {

        $table = $this->conn->quote($table, 'text');
        $query = 'SELECT index_name name FROM user_constraints';
        $query.= ' WHERE table_name='.$table.' OR table_name='.strtoupper($table);
        $constraints = $this->conn->fetchColumn($query);

        return array_map(array($this->conn, 'fixIndexName'), $constraints);
    }
    /**
     * lists table constraints
     *
     * @param string $table     database table name
     * @return array
     */
    public function listTableColumns($table)
    {
        $table  = strtoupper($table);
        $sql    = "SELECT column_name, data_type, data_length, nullable, data_default from all_tab_columns WHERE table_name='$table' ORDER BY column_name";
        $result = $this->conn->fetchAssoc($sql);

        foreach($result as $val) {
            $descr[$val['column_name']] = array(
               'name'    => $val['column_name'],
               'notnull' => (bool) ($val['nullable'] === 'N'), // nullable is N when mandatory
               'type'    => $val['data_type'],
               'default' => $val['data_default'],
               'length'  => $val['data_length']
            );
        }
        return $result;
    }
    /**
     * lists table constraints
     *
     * @param string $table     database table name
     * @return array
     */
    public function listTableIndexes($table)
    {
        $table = $this->conn->quote($table, 'text');
        $query = 'SELECT index_name name FROM user_indexes';
        $query.= ' WHERE table_name='.$table.' OR table_name='.strtoupper($table);
        $query.= ' AND generated=' .$this->conn->quote('N', 'text');
        $indexes = $this->conn->fetchColumn($query);

        return array_map(array($this->conn, 'fixIndexName'), $indexes);
    }
    /**
     * lists tables
     *
     * @param string|null $database
     * @return array
     */
    public function listTables($database = null)
    {
        $query = 'SELECT table_name FROM sys.user_tables';
        return $this->conn->fetchColumn($query);
    }
    /**
     * lists table triggers
     *
     * @param string $table     database table name
     * @return array
     */
    public function listTableTriggers($table)
    {

    }
    /**
     * lists table views
     *
     * @param string $table     database table name
     * @return array
     */
    public function listTableViews($table)
    {

    }
    /**
     * lists database users
     *
     * @return array
     */
    public function listUsers()
    {
        if ($this->conn->options['emulate_database'] && $this->conn->options['database_name_prefix']) {
            $query = 'SELECT SUBSTR(username, ';
            $query.= (strlen($this->conn->options['database_name_prefix'])+1);
            $query.= ") FROM sys.dba_users WHERE username NOT LIKE '";
            $query.= $this->conn->options['database_name_prefix']."%'";
        } else {
            $query = 'SELECT username FROM sys.dba_users';
        }
        return $this->conn->fetchColumn($query);
    }
    /**
     * lists database views
     *
     * @param string|null $database
     * @return array
     */
    public function listViews($database = null)
    {
        $query = 'SELECT view_name FROM sys.user_views';
        return $this->conn->fetchColumn($query);
    }
}