Subversion-Projekte lars-tiefland.php_share

<?php

/*

 *  $Id: Mysql.php 7644 2010-06-08 15:12:02Z jwage $

 *

 * 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.doctrine-project.org>.

 */

/**

 * @package     Doctrine

 * @subpackage  Import

 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL

 * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>

 * @author      Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)

 * @version     $Revision: 7644 $

 * @link        www.doctrine-project.org

 * @since       1.0

 */

class Doctrine_Import_Mysql extends Doctrine_Import

{

    protected $sql  = array(

                            'listDatabases'   => 'SHOW DATABASES',

                            'listTableFields' => 'DESCRIBE %s',

                            'listSequences'   => 'SHOW TABLES',

                            'listTables'      => 'SHOW TABLES',

                            'listUsers'       => 'SELECT DISTINCT USER FROM USER',

                            'listViews'       => "SHOW FULL TABLES %s WHERE Table_type = 'VIEW'",

                            );

    /**

     * lists all database sequences

     *

     * @param string|null $database

     * @return array

     */

    public function listSequences($database = null)

    {

        $query = 'SHOW TABLES';

        if ( ! is_null($database)) {

            $query .= ' FROM ' . $database;

        }

        $tableNames = $this->conn->fetchColumn($query);

        return array_map(array($this->conn->formatter, 'fixSequenceName'), $tableNames);

    }

    /**

     * lists table constraints

     *

     * @param string $table     database table name

     * @return array

     */

    public function listTableConstraints($table)

    {

        $keyName = 'Key_name';

        $nonUnique = 'Non_unique';

        if ($this->conn->getAttribute(Doctrine_Core::ATTR_FIELD_CASE) && ($this->conn->getAttribute(Doctrine_Core::ATTR_PORTABILITY) & Doctrine_Core::PORTABILITY_FIX_CASE)) {

            if ($this->conn->getAttribute(Doctrine_Core::ATTR_FIELD_CASE) == CASE_LOWER) {

                $keyName = strtolower($keyName);

                $nonUnique = strtolower($nonUnique);

            } else {

                $keyName = strtoupper($keyName);

                $nonUnique = strtoupper($nonUnique);

            }

        }

        $table = $this->conn->quoteIdentifier($table, true);

        $query = 'SHOW INDEX FROM ' . $table;

        $indexes = $this->conn->fetchAssoc($query);

        $result = array();

        foreach ($indexes as $indexData) {

            if ( ! $indexData[$nonUnique]) {

                if ($indexData[$keyName] !== 'PRIMARY') {

                    $index = $this->conn->formatter->fixIndexName($indexData[$keyName]);

                } else {

                    $index = 'PRIMARY';

                }

                if ( ! empty($index)) {

                    $result[] = $index;

                }

            }

        }

        return $result;

    }

    /**

     * lists table relations

     *

     * Expects an array of this format to be returned with all the relationships in it where the key is

     * the name of the foreign table, and the value is an array containing the local and foreign column

     * name

     *

     * Array

     * (

     *   [groups] => Array

     *     (

     *        [local] => group_id

     *        [foreign] => id

     *     )

     * )

     *

     * @param string $table     database table name

     * @return array

     */

    public function listTableRelations($tableName)

    {

        $relations = array();

        $sql = "SELECT column_name, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME FROM information_schema.key_column_usage WHERE table_name = '" . $tableName . "' AND table_schema = '" . $this->conn->getDatabaseName() . "' and REFERENCED_COLUMN_NAME is not NULL";

        $results = $this->conn->fetchAssoc($sql);

        foreach ($results as $result)

        {

            $result = array_change_key_case($result, CASE_LOWER);

            $relations[] = array('table'   => $result['referenced_table_name'],

                                 'local'   => $result['column_name'],

                                 'foreign' => $result['referenced_column_name']);

        }

        return $relations;

    }

    /**

     * lists table constraints

     *

     * @param string $table     database table name

     * @return array

     */

    public function listTableColumns($table)

    {

        $sql = 'DESCRIBE ' . $this->conn->quoteIdentifier($table, true);

        $result = $this->conn->fetchAssoc($sql);

        $description = array();

        $columns = array();

        foreach ($result as $key => $val) {

            $val = array_change_key_case($val, CASE_LOWER);

            $decl = $this->conn->dataDict->getPortableDeclaration($val);

            $values = isset($decl['values']) ? $decl['values'] : array();

            $val['default'] = $val['default'] == 'CURRENT_TIMESTAMP' ? null : $val['default'];

            $description = array(

                          'name'          => $val['field'],

                          'type'          => $decl['type'][0],

                          'alltypes'      => $decl['type'],

                          'ntype'         => $val['type'],

                          'length'        => $decl['length'],

                          'fixed'         => (bool) $decl['fixed'],

                          'unsigned'      => (bool) $decl['unsigned'],

                          'values'        => $values,

                          'primary'       => (strtolower($val['key']) == 'pri'),

                          'default'       => $val['default'],

                          'notnull'       => (bool) ($val['null'] != 'YES'),

                          'autoincrement' => (bool) (strpos($val['extra'], 'auto_increment') !== false),

                          );

            if (isset($decl['scale'])) {

                $description['scale'] = $decl['scale'];

            }

            $columns[$val['field']] = $description;

        }

        return $columns;

    }

    /**

     * lists table constraints

     *

     * @param string $table     database table name

     * @return array

     */

    public function listTableIndexes($table)

    {

        $keyName = 'Key_name';

        $nonUnique = 'Non_unique';

        if ($this->conn->getAttribute(Doctrine_Core::ATTR_FIELD_CASE) && ($this->conn->getAttribute(Doctrine_Core::ATTR_PORTABILITY) & Doctrine_Core::PORTABILITY_FIX_CASE)) {

            if ($this->conn->getAttribute(Doctrine_Core::ATTR_FIELD_CASE) == CASE_LOWER) {

                $keyName = strtolower($keyName);

                $nonUnique = strtolower($nonUnique);

            } else {

                $keyName = strtoupper($keyName);

                $nonUnique = strtoupper($nonUnique);

            }

        }

        $table = $this->conn->quoteIdentifier($table, true);

        $query = 'SHOW INDEX FROM ' . $table;

        $indexes = $this->conn->fetchAssoc($query);

        $result = array();

        foreach ($indexes as $indexData) {

            if ($indexData[$nonUnique] && ($index = $this->conn->formatter->fixIndexName($indexData[$keyName]))) {

                $result[] = $index;

            }

        }

        return $result;

    }

    /**

     * lists tables

     *

     * @param string|null $database

     * @return array

     */

    public function listTables($database = null)

    {

        return $this->conn->fetchColumn($this->sql['listTables']);

    }

    /**

     * lists database views

     *

     * @param string|null $database

     * @return array

     */

    public function listViews($database = null)

    {

        if (is_null($database)) {

            $query = 'SELECT table_name FROM information_schema.VIEWS';

        } else {

            $query = sprintf($this->sql['listViews'], ' FROM ' . $database);

        }

        return $this->conn->fetchColumn($query);

    }

}