forked from GNUsocial/gnu-social
611 lines
25 KiB
PHP
611 lines
25 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2007 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@pooteeweet.org> |
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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/Reverse/Common.php';
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/**
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* MDB2 MySQLi driver for the schema reverse engineering module
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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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* @author Lorenzo Alberton <l.alberton@quipo.it>
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*/
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class MDB2_Driver_Reverse_mysqli extends MDB2_Driver_Reverse_Common
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{
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/**
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* Array for converting MYSQLI_*_FLAG constants to text values
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* @var array
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* @access public
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*/
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var $flags = array(
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MYSQLI_NOT_NULL_FLAG => 'not_null',
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MYSQLI_PRI_KEY_FLAG => 'primary_key',
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MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
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MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
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MYSQLI_BLOB_FLAG => 'blob',
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MYSQLI_UNSIGNED_FLAG => 'unsigned',
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MYSQLI_ZEROFILL_FLAG => 'zerofill',
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MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
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MYSQLI_TIMESTAMP_FLAG => 'timestamp',
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MYSQLI_SET_FLAG => 'set',
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// MYSQLI_NUM_FLAG => 'numeric', // unnecessary
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// MYSQLI_PART_KEY_FLAG => 'multiple_key', // duplicatvie
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MYSQLI_GROUP_FLAG => 'group_by'
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);
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/**
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* Array for converting MYSQLI_TYPE_* constants to text values
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* @var array
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* @access public
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*/
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var $types = array(
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MYSQLI_TYPE_DECIMAL => 'decimal',
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246 => 'decimal',
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MYSQLI_TYPE_TINY => 'tinyint',
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MYSQLI_TYPE_SHORT => 'int',
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MYSQLI_TYPE_LONG => 'int',
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MYSQLI_TYPE_FLOAT => 'float',
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MYSQLI_TYPE_DOUBLE => 'double',
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// MYSQLI_TYPE_NULL => 'DEFAULT NULL', // let flags handle it
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MYSQLI_TYPE_TIMESTAMP => 'timestamp',
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MYSQLI_TYPE_LONGLONG => 'bigint',
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MYSQLI_TYPE_INT24 => 'mediumint',
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MYSQLI_TYPE_DATE => 'date',
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MYSQLI_TYPE_TIME => 'time',
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MYSQLI_TYPE_DATETIME => 'datetime',
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MYSQLI_TYPE_YEAR => 'year',
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MYSQLI_TYPE_NEWDATE => 'date',
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MYSQLI_TYPE_ENUM => 'enum',
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MYSQLI_TYPE_SET => 'set',
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MYSQLI_TYPE_TINY_BLOB => 'tinyblob',
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MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
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MYSQLI_TYPE_LONG_BLOB => 'longblob',
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MYSQLI_TYPE_BLOB => 'blob',
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MYSQLI_TYPE_VAR_STRING => 'varchar',
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MYSQLI_TYPE_STRING => 'char',
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MYSQLI_TYPE_GEOMETRY => 'geometry',
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);
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// {{{ getTableFieldDefinition()
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/**
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* Get the structure of a field into an array
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*
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* @param string $table_name name of table that should be used in method
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* @param string $field_name name of field that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableFieldDefinition($table_name, $field_name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$result = $db->loadModule('Datatype', null, true);
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if (MDB2::isError($result)) {
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return $result;
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}
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list($schema, $table) = $this->splitTableSchema($table_name);
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW FULL COLUMNS FROM $table LIKE ".$db->quote($field_name);
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$columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
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if (MDB2::isError($columns)) {
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return $columns;
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}
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foreach ($columns as $column) {
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$column = array_change_key_case($column, CASE_LOWER);
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$column['name'] = $column['field'];
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unset($column['field']);
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column['name'] = strtolower($column['name']);
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} else {
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$column['name'] = strtoupper($column['name']);
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}
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} else {
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$column = array_change_key_case($column, $db->options['field_case']);
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}
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if ($field_name == $column['name']) {
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$mapped_datatype = $db->datatype->mapNativeDatatype($column);
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if (MDB2::isError($mapped_datatype)) {
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return $mapped_datatype;
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}
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list($types, $length, $unsigned, $fixed) = $mapped_datatype;
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$notnull = false;
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if (empty($column['null']) || $column['null'] !== 'YES') {
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$notnull = true;
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}
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$default = false;
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if (array_key_exists('default', $column)) {
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$default = $column['default'];
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if ((null === $default) && $notnull) {
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$default = '';
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}
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}
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$definition[0] = array(
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'notnull' => $notnull,
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'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
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);
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$autoincrement = false;
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if (!empty($column['extra'])) {
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if ($column['extra'] == 'auto_increment') {
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$autoincrement = true;
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} else {
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$definition[0]['extra'] = $column['extra'];
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}
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}
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$collate = null;
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if (!empty($column['collation'])) {
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$collate = $column['collation'];
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$charset = preg_replace('/(.+?)(_.+)?/', '$1', $collate);
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}
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if (null !== $length) {
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$definition[0]['length'] = $length;
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}
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if (null !== $unsigned) {
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$definition[0]['unsigned'] = $unsigned;
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}
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if (null !== $fixed) {
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$definition[0]['fixed'] = $fixed;
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}
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if ($default !== false) {
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$definition[0]['default'] = $default;
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}
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if ($autoincrement !== false) {
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$definition[0]['autoincrement'] = $autoincrement;
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}
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if (null !== $collate) {
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$definition[0]['collate'] = $collate;
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$definition[0]['charset'] = $charset;
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}
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foreach ($types as $key => $type) {
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$definition[$key] = $definition[0];
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if ($type == 'clob' || $type == 'blob') {
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unset($definition[$key]['default']);
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} elseif ($type == 'timestamp' && $notnull && empty($definition[$key]['default'])) {
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$definition[$key]['default'] = '0000-00-00 00:00:00';
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}
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$definition[$key]['type'] = $type;
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$definition[$key]['mdb2type'] = $type;
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}
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return $definition;
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}
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}
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table column', __FUNCTION__);
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}
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// }}}
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// {{{ getTableIndexDefinition()
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/**
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* Get the structure of an index into an array
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*
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* @param string $table_name name of table that should be used in method
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* @param string $index_name name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableIndexDefinition($table_name, $index_name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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list($schema, $table) = $this->splitTableSchema($table_name);
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
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$index_name_mdb2 = $db->getIndexName($index_name);
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$result = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2)));
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if (!MDB2::isError($result) && (null !== $result)) {
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// apply 'idxname_format' only if the query succeeded, otherwise
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// fallback to the given $index_name, without transformation
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$index_name = $index_name_mdb2;
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}
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$result = $db->query(sprintf($query, $db->quote($index_name)));
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if (MDB2::isError($result)) {
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return $result;
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}
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$colpos = 1;
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$definition = array();
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while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
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$row = array_change_key_case($row, CASE_LOWER);
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$key_name = $row['key_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$key_name = strtolower($key_name);
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} else {
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$key_name = strtoupper($key_name);
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}
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}
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if ($index_name == $key_name) {
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if (!$row['non_unique']) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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$index_name . ' is not an existing table index', __FUNCTION__);
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}
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$column_name = $row['column_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column_name = strtolower($column_name);
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} else {
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$column_name = strtoupper($column_name);
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}
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}
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$definition['fields'][$column_name] = array(
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'position' => $colpos++
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);
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if (!empty($row['collation'])) {
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$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
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? 'ascending' : 'descending');
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}
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}
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}
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$result->free();
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if (empty($definition['fields'])) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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$index_name . ' is not an existing table index', __FUNCTION__);
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}
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return $definition;
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}
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// }}}
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// {{{ getTableConstraintDefinition()
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/**
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* Get the structure of a constraint into an array
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*
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* @param string $table_name name of table that should be used in method
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* @param string $constraint_name name of constraint that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableConstraintDefinition($table_name, $constraint_name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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list($schema, $table) = $this->splitTableSchema($table_name);
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$constraint_name_original = $constraint_name;
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
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if (strtolower($constraint_name) != 'primary') {
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$constraint_name_mdb2 = $db->getIndexName($constraint_name);
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$result = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2)));
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if (!MDB2::isError($result) && (null !== $result)) {
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// apply 'idxname_format' only if the query succeeded, otherwise
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// fallback to the given $index_name, without transformation
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$constraint_name = $constraint_name_mdb2;
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}
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}
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$result = $db->query(sprintf($query, $db->quote($constraint_name)));
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if (MDB2::isError($result)) {
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return $result;
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}
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$colpos = 1;
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//default values, eventually overridden
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$definition = array(
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'primary' => false,
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'unique' => false,
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'foreign' => false,
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'check' => false,
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'fields' => array(),
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'references' => array(
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'table' => '',
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'fields' => array(),
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),
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'onupdate' => '',
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'ondelete' => '',
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'match' => '',
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'deferrable' => false,
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'initiallydeferred' => false,
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);
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while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
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$row = array_change_key_case($row, CASE_LOWER);
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$key_name = $row['key_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$key_name = strtolower($key_name);
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} else {
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$key_name = strtoupper($key_name);
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}
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}
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if ($constraint_name == $key_name) {
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if ($row['non_unique']) {
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//FOREIGN KEY?
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return $this->_getTableFKConstraintDefinition($table, $constraint_name_original, $definition);
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}
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if ($row['key_name'] == 'PRIMARY') {
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$definition['primary'] = true;
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} elseif (!$row['non_unique']) {
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$definition['unique'] = true;
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}
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$column_name = $row['column_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column_name = strtolower($column_name);
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} else {
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$column_name = strtoupper($column_name);
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}
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}
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$definition['fields'][$column_name] = array(
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'position' => $colpos++
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);
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if (!empty($row['collation'])) {
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$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
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? 'ascending' : 'descending');
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}
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}
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}
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$result->free();
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if (empty($definition['fields'])) {
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return $this->_getTableFKConstraintDefinition($table, $constraint_name_original, $definition);
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}
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return $definition;
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}
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// }}}
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// {{{ _getTableFKConstraintDefinition()
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/**
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* Get the FK definition from the CREATE TABLE statement
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*
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* @param string $table table name
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* @param string $constraint_name constraint name
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* @param array $definition default values for constraint definition
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*
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* @return array|PEAR_Error
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* @access private
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*/
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function _getTableFKConstraintDefinition($table, $constraint_name, $definition)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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//Use INFORMATION_SCHEMA instead?
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//SELECT *
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// FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
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// WHERE CONSTRAINT_SCHEMA = '$dbname'
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// AND TABLE_NAME = '$table'
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// AND CONSTRAINT_NAME = '$constraint_name';
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$query = 'SHOW CREATE TABLE '. $db->escape($table);
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$constraint = $db->queryOne($query, 'text', 1);
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if (!MDB2::isError($constraint) && !empty($constraint)) {
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$constraint = strtolower($constraint);
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} else {
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$constraint = strtoupper($constraint);
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}
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}
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$constraint_name_original = $constraint_name;
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$constraint_name = $db->getIndexName($constraint_name);
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$pattern = '/\bCONSTRAINT\s+'.$constraint_name.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^\s]+) \(([^\)]+)\)(?: ON DELETE ([^\s]+))?(?: ON UPDATE ([^\s]+))?/i';
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if (!preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
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//fallback to original constraint name
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$pattern = '/\bCONSTRAINT\s+'.$constraint_name_original.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^\s]+) \(([^\)]+)\)(?: ON DELETE ([^\s]+))?(?: ON UPDATE ([^\s]+))?/i';
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}
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if (preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
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$definition['foreign'] = true;
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$column_names = explode(',', $matches[1]);
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$referenced_cols = explode(',', $matches[3]);
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$definition['references'] = array(
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'table' => $matches[2],
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'fields' => array(),
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);
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$colpos = 1;
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foreach ($column_names as $column_name) {
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$definition['fields'][trim($column_name)] = array(
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'position' => $colpos++
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);
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}
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$colpos = 1;
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foreach ($referenced_cols as $column_name) {
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$definition['references']['fields'][trim($column_name)] = array(
|
|
'position' => $colpos++
|
|
);
|
|
}
|
|
$definition['ondelete'] = empty($matches[4]) ? 'RESTRICT' : strtoupper($matches[4]);
|
|
$definition['onupdate'] = empty($matches[5]) ? 'RESTRICT' : strtoupper($matches[5]);
|
|
$definition['match'] = 'SIMPLE';
|
|
return $definition;
|
|
}
|
|
}
|
|
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
$constraint_name . ' is not an existing table constraint', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getTriggerDefinition()
|
|
|
|
/**
|
|
* Get the structure of a trigger into an array
|
|
*
|
|
* EXPERIMENTAL
|
|
*
|
|
* WARNING: this function is experimental and may change the returned value
|
|
* at any time until labelled as non-experimental
|
|
*
|
|
* @param string $trigger name of trigger that should be used in method
|
|
* @return mixed data array on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function getTriggerDefinition($trigger)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = 'SELECT trigger_name,
|
|
event_object_table AS table_name,
|
|
action_statement AS trigger_body,
|
|
action_timing AS trigger_type,
|
|
event_manipulation AS trigger_event
|
|
FROM information_schema.triggers
|
|
WHERE trigger_name = '. $db->quote($trigger, 'text');
|
|
$types = array(
|
|
'trigger_name' => 'text',
|
|
'table_name' => 'text',
|
|
'trigger_body' => 'text',
|
|
'trigger_type' => 'text',
|
|
'trigger_event' => 'text',
|
|
);
|
|
$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
|
|
if (MDB2::isError($def)) {
|
|
return $def;
|
|
}
|
|
$def['trigger_comment'] = '';
|
|
$def['trigger_enabled'] = true;
|
|
return $def;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ tableInfo()
|
|
|
|
/**
|
|
* Returns information about a table or a result set
|
|
*
|
|
* @param object|string $result MDB2_result object from a query or a
|
|
* string containing the name of a table.
|
|
* While this also accepts a query result
|
|
* resource identifier, this behavior is
|
|
* deprecated.
|
|
* @param int $mode a valid tableInfo mode
|
|
*
|
|
* @return array an associative array with the information requested.
|
|
* A MDB2_Error object on failure.
|
|
*
|
|
* @see MDB2_Driver_Common::setOption()
|
|
*/
|
|
function tableInfo($result, $mode = null)
|
|
{
|
|
if (is_string($result)) {
|
|
return parent::tableInfo($result, $mode);
|
|
}
|
|
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
|
|
if (!is_object($resource)) {
|
|
return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'Could not generate result resource', __FUNCTION__);
|
|
}
|
|
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
if ($db->options['field_case'] == CASE_LOWER) {
|
|
$case_func = 'strtolower';
|
|
} else {
|
|
$case_func = 'strtoupper';
|
|
}
|
|
} else {
|
|
$case_func = 'strval';
|
|
}
|
|
|
|
$count = @mysqli_num_fields($resource);
|
|
$res = array();
|
|
if ($mode) {
|
|
$res['num_fields'] = $count;
|
|
}
|
|
|
|
$db->loadModule('Datatype', null, true);
|
|
for ($i = 0; $i < $count; $i++) {
|
|
$tmp = @mysqli_fetch_field($resource);
|
|
|
|
$flags = '';
|
|
foreach ($this->flags as $const => $means) {
|
|
if ($tmp->flags & $const) {
|
|
$flags.= $means . ' ';
|
|
}
|
|
}
|
|
if ($tmp->def) {
|
|
$flags.= 'default_' . rawurlencode($tmp->def);
|
|
}
|
|
$flags = trim($flags);
|
|
|
|
$res[$i] = array(
|
|
'table' => $case_func($tmp->table),
|
|
'name' => $case_func($tmp->name),
|
|
'type' => isset($this->types[$tmp->type])
|
|
? $this->types[$tmp->type] : 'unknown',
|
|
// http://bugs.php.net/?id=36579
|
|
'length' => $tmp->length,
|
|
'flags' => $flags,
|
|
);
|
|
$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
|
|
if (MDB2::isError($mdb2type_info)) {
|
|
return $mdb2type_info;
|
|
}
|
|
$res[$i]['mdb2type'] = $mdb2type_info[0][0];
|
|
if ($mode & MDB2_TABLEINFO_ORDER) {
|
|
$res['order'][$res[$i]['name']] = $i;
|
|
}
|
|
if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
|
}
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
}
|
|
?>
|