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, Lorenzo Alberton |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Authors: Lukas Smith <smith@pooteeweet.org> |
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// | Lorenzo Alberton <l.alberton@quipo.it> |
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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 SQlite 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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*/
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class MDB2_Driver_Reverse_sqlite extends MDB2_Driver_Reverse_Common
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{
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/**
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* Remove SQL comments from the field definition
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*
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* @access private
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*/
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function _removeComments($sql) {
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$lines = explode("\n", $sql);
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foreach ($lines as $k => $line) {
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$pieces = explode('--', $line);
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if (count($pieces) > 1 && (substr_count($pieces[0], '\'') % 2) == 0) {
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$lines[$k] = substr($line, 0, strpos($line, '--'));
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}
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}
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return implode("\n", $lines);
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}
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/**
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*
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*/
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function _getTableColumns($sql)
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{
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$db = $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$start_pos = strpos($sql, '(');
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$end_pos = strrpos($sql, ')');
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$column_def = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
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// replace the decimal length-places-separator with a colon
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$column_def = preg_replace('/(\d),(\d)/', '\1:\2', $column_def);
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$column_def = $this->_removeComments($column_def);
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$column_sql = explode(',', $column_def);
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$columns = array();
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$count = count($column_sql);
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if ($count == 0) {
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'unexpected empty table column definition list', __FUNCTION__);
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}
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$regexp = '/^\s*([^\s]+) +(CHAR|VARCHAR|VARCHAR2|TEXT|BOOLEAN|SMALLINT|INT|INTEGER|DECIMAL|TINYINT|BIGINT|DOUBLE|FLOAT|DATETIME|DATE|TIME|LONGTEXT|LONGBLOB)( ?\(([1-9][0-9]*)(:([1-9][0-9]*))?\))?( NULL| NOT NULL)?( UNSIGNED)?( NULL| NOT NULL)?( PRIMARY KEY)?( DEFAULT (\'[^\']*\'|[^ ]+))?( NULL| NOT NULL)?( PRIMARY KEY)?(\s*\-\-.*)?$/i';
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$regexp2 = '/^\s*([^ ]+) +(PRIMARY|UNIQUE|CHECK)$/i';
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for ($i=0, $j=0; $i<$count; ++$i) {
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if (!preg_match($regexp, trim($column_sql[$i]), $matches)) {
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if (!preg_match($regexp2, trim($column_sql[$i]))) {
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continue;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'unexpected table column SQL definition: "'.$column_sql[$i].'"', __FUNCTION__);
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}
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$columns[$j]['name'] = trim($matches[1], implode('', $db->identifier_quoting));
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$columns[$j]['type'] = strtolower($matches[2]);
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if (isset($matches[4]) && strlen($matches[4])) {
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$columns[$j]['length'] = $matches[4];
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}
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if (isset($matches[6]) && strlen($matches[6])) {
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$columns[$j]['decimal'] = $matches[6];
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}
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if (isset($matches[8]) && strlen($matches[8])) {
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$columns[$j]['unsigned'] = true;
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}
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if (isset($matches[9]) && strlen($matches[9])) {
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$columns[$j]['autoincrement'] = true;
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}
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if (isset($matches[12]) && strlen($matches[12])) {
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$default = $matches[12];
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if (strlen($default) && $default[0]=="'") {
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$default = str_replace("''", "'", substr($default, 1, strlen($default)-2));
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}
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if ($default === 'NULL') {
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$default = null;
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}
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$columns[$j]['default'] = $default;
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} else {
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$columns[$j]['default'] = null;
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}
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if (isset($matches[7]) && strlen($matches[7])) {
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$columns[$j]['notnull'] = ($matches[7] === ' NOT NULL');
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} else if (isset($matches[9]) && strlen($matches[9])) {
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$columns[$j]['notnull'] = ($matches[9] === ' NOT NULL');
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} else if (isset($matches[13]) && strlen($matches[13])) {
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$columns[$j]['notnull'] = ($matches[13] === ' NOT NULL');
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}
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++$j;
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}
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return $columns;
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}
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// {{{ getTableFieldDefinition()
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/**
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* Get the stucture 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 $field_name name of field that should be used in method
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* @return mixed data array on success, a MDB2 error on failure.
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* The returned array contains an array for each field definition,
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* with (some of) these indices:
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* [notnull] [nativetype] [length] [fixed] [default] [type] [mdb2type]
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* @access public
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*/
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function getTableFieldDefinition($table_name, $field_name)
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{
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$db = $this->getDBInstance();
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if (PEAR::isError($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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$result = $db->loadModule('Datatype', null, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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$query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
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} else {
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$query.= 'name='.$db->quote($table, 'text');
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}
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$sql = $db->queryOne($query);
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if (PEAR::isError($sql)) {
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return $sql;
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}
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$columns = $this->_getTableColumns($sql);
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foreach ($columns as $column) {
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if ($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 (PEAR::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($column['notnull'])) {
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$notnull = $column['notnull'];
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}
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$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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$autoincrement = false;
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if (!empty($column['autoincrement'])) {
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$autoincrement = true;
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}
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$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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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'] = $autoincrement;
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}
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foreach ($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[$key]['default']);
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}
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$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 stucture 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 = $this->getDBInstance();
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if (PEAR::isError($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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$query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$query.= 'LOWER(name)=%s AND LOWER(tbl_name)=' . $db->quote(strtolower($table), 'text');
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} else {
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$query.= 'name=%s AND tbl_name=' . $db->quote($table, 'text');
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}
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$query.= ' AND sql NOT NULL ORDER BY name';
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$index_name_mdb2 = $db->getIndexName($index_name);
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$qry = sprintf($query, $db->quote(strtolower($index_name_mdb2), 'text'));
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} else {
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$qry = sprintf($query, $db->quote($index_name_mdb2, 'text'));
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}
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$sql = $db->queryOne($qry, 'text');
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if (PEAR::isError($sql) || empty($sql)) {
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// fallback to the given $index_name, without transformation
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$qry = sprintf($query, $db->quote(strtolower($index_name), 'text'));
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} else {
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$qry = sprintf($query, $db->quote($index_name, 'text'));
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}
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$sql = $db->queryOne($qry, 'text');
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}
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if (PEAR::isError($sql)) {
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return $sql;
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}
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if (!$sql) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table index', __FUNCTION__);
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}
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$sql = strtolower($sql);
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$start_pos = strpos($sql, '(');
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$end_pos = strrpos($sql, ')');
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$column_names = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
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$column_names = explode(',', $column_names);
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if (preg_match("/^create unique/", $sql)) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table index', __FUNCTION__);
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}
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$definition = array();
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$count = count($column_names);
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for ($i=0; $i<$count; ++$i) {
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$column_name = strtok($column_names[$i], ' ');
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$collation = strtok(' ');
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$definition['fields'][$column_name] = array(
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'position' => $i+1
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);
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if (!empty($collation)) {
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$definition['fields'][$column_name]['sorting'] =
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($collation=='ASC' ? 'ascending' : 'descending');
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}
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}
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if (empty($definition['fields'])) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified 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 stucture 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 = $this->getDBInstance();
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if (PEAR::isError($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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$query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$query.= 'LOWER(name)=%s AND LOWER(tbl_name)=' . $db->quote(strtolower($table), 'text');
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} else {
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$query.= 'name=%s AND tbl_name=' . $db->quote($table, 'text');
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}
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$query.= ' AND sql NOT NULL ORDER BY name';
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$constraint_name_mdb2 = $db->getIndexName($constraint_name);
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$qry = sprintf($query, $db->quote(strtolower($constraint_name_mdb2), 'text'));
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} else {
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$qry = sprintf($query, $db->quote($constraint_name_mdb2, 'text'));
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}
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$sql = $db->queryOne($qry, 'text');
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if (PEAR::isError($sql) || empty($sql)) {
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// fallback to the given $index_name, without transformation
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$qry = sprintf($query, $db->quote(strtolower($constraint_name), 'text'));
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} else {
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$qry = sprintf($query, $db->quote($constraint_name, 'text'));
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}
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$sql = $db->queryOne($qry, 'text');
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}
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if (PEAR::isError($sql)) {
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return $sql;
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}
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//default values, eventually overridden
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$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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if (!$sql) {
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$query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
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} else {
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$query.= 'name='.$db->quote($table, 'text');
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}
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$query.= " AND sql NOT NULL ORDER BY name";
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$sql = $db->queryOne($query, 'text');
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if (PEAR::isError($sql)) {
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return $sql;
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}
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if ($constraint_name == 'primary') {
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// search in table definition for PRIMARY KEYs
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if (preg_match("/\bPRIMARY\s+KEY\b\s*\(([^)]+)/i", $sql, $tmp)) {
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$definition['primary'] = true;
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$definition['fields'] = array();
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$column_names = explode(',', $tmp[1]);
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$colpos = 1;
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foreach ($column_names as $column_name) {
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$definition['fields'][trim($column_name)] = array(
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'position' => $colpos++
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);
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}
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return $definition;
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}
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if (preg_match("/\"([^\"]+)\"[^\,\"]+\bPRIMARY\s+KEY\b[^\,\)]*/i", $sql, $tmp)) {
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$definition['primary'] = true;
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$definition['fields'] = array();
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$column_names = explode(',', $tmp[1]);
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$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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return $definition;
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}
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} else {
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// search in table definition for FOREIGN KEYs
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$pattern = "/\bCONSTRAINT\b\s+%s\s+
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\bFOREIGN\s+KEY\b\s*\(([^\)]+)\)\s*
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\bREFERENCES\b\s+([^\s]+)\s*\(([^\)]+)\)\s*
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(?:\bMATCH\s*([^\s]+))?\s*
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(?:\bON\s+UPDATE\s+([^\s,\)]+))?\s*
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(?:\bON\s+DELETE\s+([^\s,\)]+))?\s*
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/imsx";
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$found_fk = false;
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if (preg_match(sprintf($pattern, $constraint_name_mdb2), $sql, $tmp)) {
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$found_fk = true;
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} elseif (preg_match(sprintf($pattern, $constraint_name), $sql, $tmp)) {
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$found_fk = true;
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}
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if ($found_fk) {
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$definition['foreign'] = true;
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$definition['match'] = 'SIMPLE';
|
|
$definition['onupdate'] = 'NO ACTION';
|
|
$definition['ondelete'] = 'NO ACTION';
|
|
$definition['references']['table'] = $tmp[2];
|
|
$column_names = explode(',', $tmp[1]);
|
|
$colpos = 1;
|
|
foreach ($column_names as $column_name) {
|
|
$definition['fields'][trim($column_name)] = array(
|
|
'position' => $colpos++
|
|
);
|
|
}
|
|
$referenced_cols = explode(',', $tmp[3]);
|
|
$colpos = 1;
|
|
foreach ($referenced_cols as $column_name) {
|
|
$definition['references']['fields'][trim($column_name)] = array(
|
|
'position' => $colpos++
|
|
);
|
|
}
|
|
if (isset($tmp[4])) {
|
|
$definition['match'] = $tmp[4];
|
|
}
|
|
if (isset($tmp[5])) {
|
|
$definition['onupdate'] = $tmp[5];
|
|
}
|
|
if (isset($tmp[6])) {
|
|
$definition['ondelete'] = $tmp[6];
|
|
}
|
|
return $definition;
|
|
}
|
|
}
|
|
$sql = false;
|
|
}
|
|
if (!$sql) {
|
|
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
$constraint_name . ' is not an existing table constraint', __FUNCTION__);
|
|
}
|
|
|
|
$sql = strtolower($sql);
|
|
$start_pos = strpos($sql, '(');
|
|
$end_pos = strrpos($sql, ')');
|
|
$column_names = substr($sql, $start_pos+1, $end_pos-$start_pos-1);
|
|
$column_names = explode(',', $column_names);
|
|
|
|
if (!preg_match("/^create unique/", $sql)) {
|
|
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
$constraint_name . ' is not an existing table constraint', __FUNCTION__);
|
|
}
|
|
|
|
$definition['unique'] = true;
|
|
$count = count($column_names);
|
|
for ($i=0; $i<$count; ++$i) {
|
|
$column_name = strtok($column_names[$i]," ");
|
|
$collation = strtok(" ");
|
|
$definition['fields'][$column_name] = array(
|
|
'position' => $i+1
|
|
);
|
|
if (!empty($collation)) {
|
|
$definition['fields'][$column_name]['sorting'] =
|
|
($collation=='ASC' ? 'ascending' : 'descending');
|
|
}
|
|
}
|
|
|
|
if (empty($definition['fields'])) {
|
|
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
$constraint_name . ' is not an existing table constraint', __FUNCTION__);
|
|
}
|
|
return $definition;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 = $this->getDBInstance();
|
|
if (PEAR::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$query = "SELECT name as trigger_name,
|
|
tbl_name AS table_name,
|
|
sql AS trigger_body,
|
|
NULL AS trigger_type,
|
|
NULL AS trigger_event,
|
|
NULL AS trigger_comment,
|
|
1 AS trigger_enabled
|
|
FROM sqlite_master
|
|
WHERE type='trigger'";
|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
$query.= ' AND LOWER(name)='.$db->quote(strtolower($trigger), 'text');
|
|
} else {
|
|
$query.= ' AND name='.$db->quote($trigger, 'text');
|
|
}
|
|
$types = array(
|
|
'trigger_name' => 'text',
|
|
'table_name' => 'text',
|
|
'trigger_body' => 'text',
|
|
'trigger_type' => 'text',
|
|
'trigger_event' => 'text',
|
|
'trigger_comment' => 'text',
|
|
'trigger_enabled' => 'boolean',
|
|
);
|
|
$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
|
|
if (PEAR::isError($def)) {
|
|
return $def;
|
|
}
|
|
if (empty($def)) {
|
|
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
|
'it was not specified an existing trigger', __FUNCTION__);
|
|
}
|
|
if (preg_match("/^create\s+(?:temp|temporary)?trigger\s+(?:if\s+not\s+exists\s+)?.*(before|after)?\s+(insert|update|delete)/Uims", $def['trigger_body'], $tmp)) {
|
|
$def['trigger_type'] = strtoupper($tmp[1]);
|
|
$def['trigger_event'] = strtoupper($tmp[2]);
|
|
}
|
|
return $def;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ tableInfo()
|
|
|
|
/**
|
|
* Returns information about a table
|
|
*
|
|
* @param string $result a string containing the name of a table
|
|
* @param int $mode a valid tableInfo mode
|
|
*
|
|
* @return array an associative array with the information requested.
|
|
* A MDB2_Error object on failure.
|
|
*
|
|
* @see MDB2_Driver_Common::tableInfo()
|
|
* @since Method available since Release 1.7.0
|
|
*/
|
|
function tableInfo($result, $mode = null)
|
|
{
|
|
if (is_string($result)) {
|
|
return parent::tableInfo($result, $mode);
|
|
}
|
|
|
|
$db = $this->getDBInstance();
|
|
if (PEAR::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_NOT_CAPABLE, null, null,
|
|
'This DBMS can not obtain tableInfo from result sets', __FUNCTION__);
|
|
}
|
|
}
|
|
|
|
?>
|