doctrine2/lib/Doctrine/DataDict/Mssql.php

<?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_DataDict');
/**
 * @package     Doctrine
 * @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)
 * @author      Frank M. Kromann <frank@kromann.info> (PEAR MDB2 Mssql driver)
 * @author      David Coallier <davidc@php.net> (PEAR MDB2 Mssql driver)
 * @version     $Revision$
 * @category    Object Relational Mapping
 * @link        www.phpdoctrine.com
 * @since       1.0
 */
class Doctrine_DataDict_Mssql extends Doctrine_DataDict
{
    /**
     * Obtain DBMS specific SQL code portion needed to declare an text type
     * field to be used in statements like CREATE TABLE.
     *
     * @param array $field  associative array with the name of the properties
     *      of the field being declared as array indexes. Currently, the types
     *      of supported field properties are as follows:
     *
     *      length
     *          Integer value that determines the maximum length of the text
     *          field. If this argument is missing the field should be
     *          declared to have the longest length allowed by the DBMS.
     *
     *      default
     *          Text value to be used as default for this field.
     *
     *      notnull
     *          Boolean flag that indicates whether this field is constrained
     *          to not be set to null.
     *
     * @return      string      DBMS specific SQL code portion that should be used to
     *                          declare the specified field.
     */
    public function getNativeDeclaration($field)
    {
        switch ($field['type']) {
        case 'array':
        case 'object':
        case 'text':
        case 'char':
        case 'varchar':
        case 'string':
            $length = !empty($field['length'])
                ? $field['length'] : false;

            $fixed  = ((isset($field['fixed']) && $field['fixed']) || $field['type'] == 'char') ? true : false;

            return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR('.$db->options['default_text_field_length'].')')
                : ($length ? 'VARCHAR('.$length.')' : 'TEXT');
        case 'clob':
            if (!empty($field['length'])) {
                $length = $field['length'];
                if ($length <= 8000) {
                    return 'VARCHAR('.$length.')';
                }
             }
             return 'TEXT';
        case 'blob':
            if (!empty($field['length'])) {
                $length = $field['length'];
                if ($length <= 8000) {
                    return "VARBINARY($length)";
                }
            }
            return 'IMAGE';
        case 'integer':
        case 'enum':
            return 'INT';
        case 'boolean':
            return 'BIT';
        case 'date':
            return 'CHAR(' . strlen('YYYY-MM-DD') . ')';
        case 'time':
            return 'CHAR(' . strlen('HH:MM:SS') . ')';
        case 'timestamp':
            return 'CHAR(' . strlen('YYYY-MM-DD HH:MM:SS') . ')';
        case 'float':
            return 'FLOAT';
        case 'decimal':
            $length = !empty($field['length']) ? $field['length'] : 18;
            return 'DECIMAL('.$length.','.$db->options['decimal_places'].')';
        }
        return '';
    }
    /**
     * Maps a native array description of a field to a MDB2 datatype and length
     *
     * @param   array           $field native field description
     * @return  array           containing the various possible types, length, sign, fixed
     */
    public function getPortableDeclaration($field)
    {
        $db_type = preg_replace('/\d/','', strtolower($field['type']) );
        $length = $field['length'];
        if ((int)$length <= 0) {
            $length = null;
        }
        $type = array();
        // todo: unsigned handling seems to be missing
        $unsigned = $fixed = null;
        switch ($db_type) {
        case 'bit':
            $type[0] = 'boolean';
        break;
        case 'int':
            $type[0] = 'integer';
        break;
        case 'datetime':
            $type[0] = 'timestamp';
        break;
        case 'float':
        case 'real':
        case 'numeric':
            $type[0] = 'float';
        break;
        case 'decimal':
        case 'money':
            $type[0] = 'decimal';
        break;
        case 'text':
        case 'varchar':
            $fixed = false;
        case 'char':
            $type[0] = 'text';
            if ($length == '1') {
                $type[] = 'boolean';
                if (preg_match('/^[is|has]/', $field['name'])) {
                    $type = array_reverse($type);
                }
            } elseif (strstr($db_type, 'text')) {
                $type[] = 'clob';
            }
            if ($fixed !== false) {
                $fixed = true;
            }
        break;
        case 'image':
        case 'varbinary':
            $type[] = 'blob';
            $length = null;
        break;
        default:
            throw new Doctrine_DataDict_Mssql_Exception('unknown database attribute type: '.$db_type);
        }

        return array($type, $length, $unsigned, $fixed);
    }
}