/inc/MDB2/Driver/Datatype/sqlite.php
PHP | 354 lines | 198 code | 19 blank | 137 comment | 30 complexity | 28ec36469e2a0126877d680c6dc9ef29 MD5 | raw file
Possible License(s): GPL-2.0, BSD-3-Clause, Apache-2.0, LGPL-2.1
- <?php
- // vim: set et ts=4 sw=4 fdm=marker:
- // +----------------------------------------------------------------------+
- // | PHP versions 4 and 5 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
- // | Stig. S. Bakken, Lukas Smith |
- // | All rights reserved. |
- // +----------------------------------------------------------------------+
- // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
- // | API as well as database abstraction for PHP applications. |
- // | This LICENSE is in the BSD license style. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | |
- // | Redistributions in binary form must reproduce the above copyright |
- // | notice, this list of conditions and the following disclaimer in the |
- // | documentation and/or other materials provided with the distribution. |
- // | |
- // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
- // | Lukas Smith nor the names of his contributors may be used to endorse |
- // | or promote products derived from this software without specific prior|
- // | written permission. |
- // | |
- // | 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 |
- // | REGENTS 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. |
- // +----------------------------------------------------------------------+
- // | Author: Lukas Smith <smith@pooteeweet.org> |
- // +----------------------------------------------------------------------+
- //
- // $Id$
- //
- require_once 'MDB2/Driver/Datatype/Common.php';
- /**
- * MDB2 SQLite driver
- *
- * @package MDB2
- * @category Database
- * @author Lukas Smith <smith@pooteeweet.org>
- */
- class MDB2_Driver_Datatype_sqlite extends MDB2_Driver_Datatype_Common
- {
- // }}}
- // {{{ getTypeDeclaration()
- /**
- * Obtain DBMS specific SQL code portion needed to declare an text type
- * field to be used in statements like CREATE TABLE.
- *
- * @param array $field associative array with the name of the properties
- * of the field being declared as array indexes. Currently, the types
- * of supported field properties are as follows:
- *
- * length
- * Integer value that determines the maximum length of the text
- * field. If this argument is missing the field should be
- * declared to have the longest length allowed by the DBMS.
- *
- * default
- * Text value to be used as default for this field.
- *
- * notnull
- * Boolean flag that indicates whether this field is constrained
- * to not be set to null.
- * @return string DBMS specific SQL code portion that should be used to
- * declare the specified field.
- * @access public
- */
- function getTypeDeclaration($field)
- {
- $db =& $this->getDBInstance();
- if (PEAR::isError($db)) {
- return $db;
- }
- switch ($field['type']) {
- case 'text':
- return array_key_exists('length', $field) ? 'CHAR ('.$field['length'].')' : 'TEXT';
- case 'clob':
- if (array_key_exists('length', $field)) {
- $length = $field['length'];
- if ($length <= 255) {
- return 'TINYTEXT';
- } else {
- if ($length <= 65535) {
- return 'TEXT';
- } elseif ($length <= 16777215) {
- return 'MEDIUMTEXT';
- }
- }
- }
- return 'LONGTEXT';
- case 'blob':
- if (array_key_exists('length', $field)) {
- $length = $field['length'];
- if ($length <= 255) {
- return 'TINYBLOB';
- } else {
- if ($length <= 65535) {
- return 'BLOB';
- } elseif ($length <= 16777215) {
- $type = 'MEDIUMBLOB';
- }
- }
- }
- return 'LONGBLOB';
- case 'integer':
- return 'INT';
- case 'boolean':
- return 'BOOLEAN';
- case 'date':
- return 'DATE';
- case 'time':
- return 'TIME';
- case 'timestamp':
- return 'DATETIME';
- case 'float':
- return 'DOUBLE'.($db->options['fixed_float'] ? '('.
- ($db->options['fixed_float']+2).','.$db->options['fixed_float'].')' : '');
- case 'decimal':
- return 'BIGINT';
- }
- return '';
- }
- // }}}
- // {{{ _getIntegerDeclaration()
- /**
- * Obtain DBMS specific SQL code portion needed to declare an integer type
- * field to be used in statements like CREATE TABLE.
- *
- * @param string $name name the field to be declared.
- * @param string $field associative array with the name of the properties
- * of the field being declared as array indexes.
- * Currently, the types of supported field
- * properties are as follows:
- *
- * unsigned
- * Boolean flag that indicates whether the field
- * should be declared as unsigned integer if
- * possible.
- *
- * default
- * Integer value to be used as default for this
- * field.
- *
- * notnull
- * Boolean flag that indicates whether this field is
- * constrained to not be set to null.
- * @return string DBMS specific SQL code portion that should be used to
- * declare the specified field.
- * @access protected
- */
- function _getIntegerDeclaration($name, $field)
- {
- $db =& $this->getDBInstance();
- if (PEAR::isError($db)) {
- return $db;
- }
- $default = $autoinc = $notnull = '';
- if (array_key_exists('autoincrement', $field) && $field['autoincrement']) {
- $autoinc = ' PRIMARY KEY';
- } else {
- if (array_key_exists('default', $field)) {
- if ($field['default'] === '') {
- $field['default'] = (array_key_exists('notnull', $field) && $field['notnull'])
- ? 0 : null;
- }
- $default = ' DEFAULT '.$this->quote($field['default'], 'integer');
- }
- $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : '';
- }
- $unsigned = (array_key_exists('unsigned', $field) && $field['unsigned']) ? ' UNSIGNED' : '';
- $name = $db->quoteIdentifier($name, true);
- return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc;
- }
- // }}}
- // {{{ _quoteFloat()
- /**
- * Convert a text value into a DBMS specific format that is suitable to
- * compose query statements.
- *
- * @param string $value text string value that is intended to be converted.
- * @return string text string that represents the given argument value in
- * a DBMS specific format.
- * @access protected
- */
- function _quoteFloat($value)
- {
- $db =& $this->getDBInstance();
- if (PEAR::isError($db)) {
- return $db;
- }
- return $db->escape($value);
- }
- // }}}
- // {{{ _quoteDecimal()
- /**
- * Convert a text value into a DBMS specific format that is suitable to
- * compose query statements.
- *
- * @param string $value text string value that is intended to be converted.
- * @return string text string that represents the given argument value in
- * a DBMS specific format.
- * @access protected
- */
- function _quoteDecimal($value)
- {
- $db =& $this->getDBInstance();
- if (PEAR::isError($db)) {
- return $db;
- }
- return $db->escape($value);
- }
- // }}}
- // {{{ mapNativeDatatype()
- /**
- * Maps a native array description of a field to a MDB2 datatype and length
- *
- * @param array $field native field description
- * @return array containing the various possible types and the length
- * @access public
- */
- function mapNativeDatatype($field)
- {
- $db_type = strtolower($field['type']);
- $length = array_key_exists('length', $field) ? $field['length'] : null;
- $unsigned = array_key_exists('unsigned', $field) ? $field['unsigned'] : null;
- $type = array();
- switch ($db_type) {
- case 'boolean':
- $type[] = 'boolean';
- break;
- case 'tinyint':
- case 'smallint':
- case 'mediumint':
- case 'int':
- case 'integer':
- case 'bigint':
- $type[] = 'integer';
- if ($length == '1') {
- $type[] = 'boolean';
- if (preg_match('/^[is|has]/', $field['name'])) {
- $type = array_reverse($type);
- }
- }
- $type[] = 'decimal';
- break;
- case 'tinytext':
- case 'mediumtext':
- case 'longtext':
- case 'text':
- case 'char':
- case 'varchar':
- case "varchar2":
- if ($length == '1') {
- $type[] = 'boolean';
- if (preg_match('/[is|has]/', $field['name'])) {
- $type = array_reverse($type);
- }
- } elseif (strstr($db_type, 'text')) {
- $type[] = 'clob';
- }
- $type[] = 'text';
- break;
- case 'enum':
- preg_match_all('/\'.+\'/U',$row[$type_column], $matches);
- $length = 0;
- if (is_array($matches)) {
- foreach ($matches[0] as $value) {
- $length = max($length, strlen($value)-2);
- }
- }
- case 'set':
- $type[] = 'text';
- $type[] = 'integer';
- break;
- case 'date':
- $type[] = 'date';
- $length = null;
- break;
- case 'datetime':
- case 'timestamp':
- $type[] = 'timestamp';
- $length = null;
- break;
- case 'time':
- $type[] = 'time';
- $length = null;
- break;
- case 'float':
- case 'double':
- case 'real':
- $type[] = 'float';
- break;
- case 'decimal':
- case 'numeric':
- $type[] = 'decimal';
- break;
- case 'tinyblob':
- case 'mediumblob':
- case 'longblob':
- case 'blob':
- $type[] = 'blob';
- $length = null;
- break;
- case 'year':
- $type[] = 'integer';
- $type[] = 'date';
- $length = null;
- break;
- default:
- $db =& $this->getDBInstance();
- if (PEAR::isError($db)) {
- return $db;
- }
- return $db->raiseError(MDB2_ERROR, null, null,
- 'getTableFieldDefinition: unknown database attribute type: '.$db_type);
- }
- return array($type, $length, $unsigned);
- }
- }
- ?>