<?php
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// vim: set et ts=4 sw=4 fdm=marker:
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Authors: Lukas Smith <smith@pooteeweet.org> |
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// | Daniel Convissor <danielc@php.net> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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require_once 'MDB2/Driver/Datatype/Common.php';
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/**
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* MDB2 MS SQL driver
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Datatype_mssql extends MDB2_Driver_Datatype_Common
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{
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// {{{ convertResult()
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/**
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* convert a value to a RDBMS indepdenant MDB2 type
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*
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* @param mixed $value value to be converted
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* @param int $type constant that specifies which type to convert to
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* @return mixed converted value
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* @access public
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*/
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function convertResult($value, $type)
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{
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if (is_null($value)) {
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return null;
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}
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switch ($type) {
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case 'boolean':
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return $value == '1';
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case 'date':
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if (strlen($value) > 10) {
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$value = substr($value,0,10);
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}
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return $value;
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case 'time':
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if (strlen($value) > 8) {
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$value = substr($value,11,8);
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}
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return $value;
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default:
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return $this->_baseConvertResult($value,$type);
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}
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}
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// }}}
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// {{{ _getIntegerDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare an integer type
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* unsigned
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* Boolean flag that indicates whether the field should be
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* declared as unsigned integer if possible.
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*
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* default
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* Integer value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getIntegerDeclaration($name, $field)
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{
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if (array_key_exists('unsigned', $field) && $field['unsigned']) {
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer";
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}
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'integer') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' INT'.$default.$notnull;
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}
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// }}}
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// {{{ _getTextDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare an text type
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* length
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* Integer value that determines the maximum length of the text
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* field. If this argument is missing the field should be
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* declared to have the longest length allowed by the DBMS.
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*
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* default
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* Text value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getTextDeclaration($name, $field)
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{
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$type = array_key_exists('length', $field) ? 'VARCHAR ('.$field['length'].')' : 'TEXT';
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'text') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' '.$type.$default.$notnull;
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}
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// }}}
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// {{{ _getCLOBDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare an character
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* large object type field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param string $field associative array with the name of the
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* properties of the field being declared as array
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* indexes. Currently, the types of supported field
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* properties are as follows:
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*
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* length
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* Integer value that determines the maximum length
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* of the large object field. If this argument is
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* missing the field should be declared to have the
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* longest length allowed by the DBMS.
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*
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* notnull
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* Boolean flag that indicates whether this field
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* is constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getCLOBDeclaration($name, $field)
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{
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if (array_key_exists('length', $field)) {
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$length = $field['length'];
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if ($length <= 8000) {
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$type = "VARCHAR($length)";
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} else {
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$type = 'TEXT';
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}
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} else {
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$type = 'TEXT';
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}
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' '.$type.$notnull;
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}
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// }}}
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// {{{ _getBLOBDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare an binary large
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* object type field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param string $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field
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* properties are as follows:
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*
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* length
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* Integer value that determines the maximum length
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* of the large object field. If this argument is
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* missing the field should be declared to have the
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* longest length allowed by the DBMS.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getBLOBDeclaration($name, $field)
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{
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if (array_key_exists('length', $field)) {
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$length = $field['length'];
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if ($length <= 8000) {
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$type = "VARBINARY($length)";
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} else {
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$type = 'IMAGE';
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}
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} else {
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$type = 'IMAGE';
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}
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' '.$type.$notnull;
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}
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// }}}
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// {{{ _getBooleanDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare a boolean type
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* default
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* Boolean value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getBooleanDeclaration($name, $field)
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{
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'boolean') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' BIT'.$default.$notnull;
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}
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// }}}
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// {{{ _getDateDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare a date type
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* default
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* Date value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getDateDeclaration($name, $field)
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{
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'date') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' CHAR ('.strlen('YYYY-MM-DD').')'.$default.$notnull;
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}
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// }}}
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// {{{ _getTimestampDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare a timestamp
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* default
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* Timestamp value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getTimestampDeclaration($name, $field)
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{
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'timestamp') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' CHAR ('.strlen('YYYY-MM-DD HH:MM:SS').')'.$default.$notnull;
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}
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// }}}
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// {{{ _getTimeDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare a time
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* default
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* Time value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getTimeDeclaration($name, $field)
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{
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'time') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' CHAR ('.strlen('HH:MM:SS').')'.$default.$notnull;
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}
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// }}}
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// {{{ _getFloatDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare an float type
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param string $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field
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* properties are as follows:
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*
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* default
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* Integer value to be used as default for this
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* field.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getFloatDeclaration($name, $field)
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{
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'float') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' FLOAT'.$default.$notnull;
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}
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// }}}
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// {{{ _getDecimalDeclaration()
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/**
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* Obtain DBMS specific SQL code portion needed to declare an decimal type
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* field to be used in statements like CREATE TABLE.
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*
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* @param string $name name the field to be declared.
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* @param string $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field
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* properties are as follows:
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*
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* default
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* Integer value to be used as default for this
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* field.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getDecimalDeclaration($name, $field)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$type = 'DECIMAL(18,'.$db->options['decimal_places'].')';
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$default = array_key_exists('default', $field) ? ' DEFAULT '.
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$this->quote($field['default'], 'decimal') : '';
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$notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ' NULL';
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return $name.' '.$type.$default.$notnull;
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}
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// }}}
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// {{{ _quoteBLOB()
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/**
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* Convert a text value into a DBMS specific format that is suitable to
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* compose query statements.
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*
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* @param $value
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* @return string text string that represents the given argument value in
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* a DBMS specific format.
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* @access protected
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*/
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function _quoteBLOB($value)
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{
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$value = $this->_readFile($value);
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return bin2hex("0x".$value);
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}
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// }}}
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// {{{ _quoteBoolean()
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/**
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* Convert a text value into a DBMS specific format that is suitable to
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* compose query statements.
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*
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* @param string $value text string value that is intended to be converted.
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* @return string text string that represents the given argument value in
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* a DBMS specific format.
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* @access protected
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*/
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function _quoteBoolean($value)
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{
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return ($value ? 1 : 0);
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}
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// }}}
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// {{{ _quoteFloat()
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/**
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* Convert a text value into a DBMS specific format that is suitable to
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* compose query statements.
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*
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* @param string $value text string value that is intended to be converted.
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* @return string text string that represents the given argument value in
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* a DBMS specific format.
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* @access protected
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*/
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function _quoteFloat($value)
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{
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return (float)$value;
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}
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// }}}
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// {{{ _quoteDecimal()
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/**
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* Convert a text value into a DBMS specific format that is suitable to
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* compose query statements.
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*
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* @param string $value text string value that is intended to be converted.
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* @return string text string that represents the given argument value in
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* a DBMS specific format.
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* @access protected
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*/
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function _quoteDecimal($value)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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return $db->escape($value);
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}
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}
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?>
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