<?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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// | Author: Lukas Smith <smith@backendmedia.com> |
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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 SQLite 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@backendmedia.com>
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*/
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class MDB2_Driver_Datatype_sqlite extends MDB2_Driver_Datatype_Common
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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 string $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field
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* properties are as follows:
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*
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* unsigned
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* Boolean flag that indicates whether the field
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* should be declared as unsigned integer if
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* possible.
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*
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* default
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* Integer value to be used as default for this
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* field.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getIntegerDeclaration($name, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$unsigned = (isset($field['unsigned']) && $field['unsigned']) ? ' UNSIGNED' : '';
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$default = isset($field['default']) ? ' DEFAULT '.
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$this->quote($field['default'], 'integer') : '';
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' INT'.$unsigned.$default.$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, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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if (isset($field['length'])) {
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$length = $field['length'];
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if ($length <= 255) {
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$type = 'TINYTEXT';
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} else {
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if ($length <= 65535) {
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$type = 'TEXT';
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} else {
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if ($length <= 16777215) {
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$type = 'MEDIUMTEXT';
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} else {
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$type = 'LONGTEXT';
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}
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}
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}
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} else {
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$type = 'LONGTEXT';
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}
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT 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, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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if (isset($field['length'])) {
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$length = $field['length'];
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if ($length <= 255) {
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$type = 'TINYBLOB';
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} else {
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if ($length <= 65535) {
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$type = 'BLOB';
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} else {
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if ($length <= 16777215) {
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$type = 'MEDIUMBLOB';
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} else {
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$type = 'LONGBLOB';
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}
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}
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}
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}
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else {
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$type = 'LONGBLOB';
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}
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' '.$type.$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 an 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 string $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field properties
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* are as follows:
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*
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* default
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* Date value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getDateDeclaration($name, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$default = isset($field['default']) ? ' DEFAULT '.
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$this->quote($field['default'], 'date') : '';
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' DATE'.$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 an timestamp
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* 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 $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field
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* properties are as follows:
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*
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* default
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* Time stamp value to be used as default for this
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* field.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getTimestampDeclaration($name, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$default = isset($field['default']) ? ' DEFAULT '.
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$this->quote($field['default'], 'timestamp') : '';
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' DATETIME'.$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 an time 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 $field associative array with the name of the properties
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* of the field being declared as array indexes.
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* Currently, the types of supported field
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* properties are as follows:
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*
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* default
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* Time value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is
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* constrained to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @access protected
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*/
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function _getTimeDeclaration($name, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$default = isset($field['default']) ? ' DEFAULT '.
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$this->quote($field['default'], 'time') : '';
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' TIME'.$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, $field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$type = 'DOUBLE'.($db->options['fixed_float'] ? '('.
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($db->options['fixed_float']+2).','.$db->options['fixed_float'].')' : '');
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$default = isset($field['default']) ? ' DEFAULT '.
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$this->quote($field['default'], 'float') : '';
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' '.$type.$default.$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 =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$type = 'BIGINT';
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$default = isset($field['default']) ? ' DEFAULT '.
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$this->quote($field['default'], 'decimal') : '';
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$notnull = (isset($field['notnull']) && $field['notnull']) ? ' NOT NULL' : '';
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return $name.' '.$type.$default.$notnull;
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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 =& $GLOBALS['_MDB2_databases'][$this->db_index];
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return $db->escape($value);
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}
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// }}}
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// {{{ mapNativeDatatype()
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/**
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* Maps a native array description of a field to a MDB2 datatype and length
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*
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* @param array $field native field description
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* @return array containing the various possible types and the length
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* @access public
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*/
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function mapNativeDatatype($field)
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{
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$db =& $GLOBALS['_MDB2_databases'][$this->db_index];
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$db_type = $field['type'];
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$length = isset($field['length']) ? $field['length'] : null;
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$type = array();
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switch ($db_type) {
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case 'tinyint':
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case 'smallint':
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case 'mediumint':
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case 'int':
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case 'integer':
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case 'bigint':
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$type[] = 'integer';
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if ($length == '1') {
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$type[] = 'boolean';
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if (preg_match('/^[is|has]/', $field['name'])) {
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$type = array_reverse($type);
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}
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}
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$type[] = 'decimal';
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break;
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case 'tinytext':
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case 'mediumtext':
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case 'longtext':
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case 'text':
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case 'char':
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case 'varchar':
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case "varchar2":
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$type[] = 'text';
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if ($length == '1') {
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$type[] = 'boolean';
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if (preg_match('/[is|has]/', $field['name'])) {
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$type = array_reverse($type);
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}
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} elseif (strstr($db_type, 'text'))
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$type[] = 'clob';
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break;
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case 'enum':
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preg_match_all('/\'.+\'/U',$row[$type_column], $matches);
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$length = 0;
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if (is_array($matches)) {
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foreach ($matches[0] as $value) {
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$length = max($length, strlen($value)-2);
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}
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}
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case 'set':
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$type[] = 'text';
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$type[] = 'integer';
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break;
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case 'date':
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$type[] = 'date';
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$length = null;
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break;
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case 'datetime':
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case 'timestamp':
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$type[] = 'timestamp';
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$length = null;
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break;
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case 'time':
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$type[] = 'time';
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$length = null;
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break;
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case 'float':
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case 'double':
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case 'real':
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$type[] = 'float';
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break;
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case 'decimal':
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case 'numeric':
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$type[] = 'decimal';
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break;
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case 'tinyblob':
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case 'mediumblob':
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case 'longblob':
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case 'blob':
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$type[] = 'text';
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$length = null;
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break;
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case 'year':
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$type[] = 'integer';
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$type[] = 'date';
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$length = null;
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break;
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default:
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return $db->raiseError(MDB2_ERROR, null, null,
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'getTableFieldDefinition: unknown database attribute type');
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}
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return array($type, $length);
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}
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}
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?>
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