1105 lines
40 KiB
PHP
1105 lines
40 KiB
PHP
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<?php
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// vim: set et ts=4 sw=4 fdm=marker:
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2008 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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/**
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* MDB2 SQLite driver
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_sqlite extends MDB2_Driver_Common
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{
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// {{{ properties
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var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false);
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var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
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var $_lasterror = '';
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var $fix_assoc_fields_names = false;
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// }}}
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// {{{ constructor
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/**
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* Constructor
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*/
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function __construct()
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{
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parent::__construct();
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$this->phptype = 'sqlite';
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$this->dbsyntax = 'sqlite';
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$this->supported['sequences'] = 'emulated';
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$this->supported['indexes'] = true;
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$this->supported['affected_rows'] = true;
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$this->supported['summary_functions'] = true;
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$this->supported['order_by_text'] = true;
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$this->supported['current_id'] = 'emulated';
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$this->supported['limit_queries'] = true;
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$this->supported['LOBs'] = true;
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$this->supported['replace'] = true;
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$this->supported['transactions'] = true;
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$this->supported['savepoints'] = false;
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$this->supported['sub_selects'] = true;
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$this->supported['triggers'] = true;
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$this->supported['auto_increment'] = true;
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$this->supported['primary_key'] = false; // requires alter table implementation
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$this->supported['result_introspection'] = false; // not implemented
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$this->supported['prepared_statements'] = 'emulated';
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$this->supported['identifier_quoting'] = true;
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$this->supported['pattern_escaping'] = false;
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$this->supported['new_link'] = false;
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$this->options['DBA_username'] = false;
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$this->options['DBA_password'] = false;
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$this->options['base_transaction_name'] = '___php_MDB2_sqlite_auto_commit_off';
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$this->options['fixed_float'] = 0;
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$this->options['database_path'] = '';
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$this->options['database_extension'] = '';
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$this->options['server_version'] = '';
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$this->options['max_identifiers_length'] = 128; //no real limit
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}
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// }}}
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// {{{ errorInfo()
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/**
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* This method is used to collect information about an error
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*
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* @param integer $error
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* @return array
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* @access public
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*/
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function errorInfo($error = null)
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{
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$native_code = null;
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if ($this->connection) {
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$native_code = @sqlite_last_error($this->connection);
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}
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$native_msg = $this->_lasterror
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? html_entity_decode($this->_lasterror) : @sqlite_error_string($native_code);
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// PHP 5.2+ prepends the function name to $php_errormsg, so we need
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// this hack to work around it, per bug #9599.
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$native_msg = preg_replace('/^sqlite[a-z_]+\(\)[^:]*: /', '', $native_msg);
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if (null === $error) {
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static $error_regexps;
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if (empty($error_regexps)) {
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$error_regexps = array(
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'/^no such table:/' => MDB2_ERROR_NOSUCHTABLE,
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'/^no such index:/' => MDB2_ERROR_NOT_FOUND,
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'/^(table|index) .* already exists$/' => MDB2_ERROR_ALREADY_EXISTS,
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'/PRIMARY KEY must be unique/i' => MDB2_ERROR_CONSTRAINT,
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'/is not unique/' => MDB2_ERROR_CONSTRAINT,
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'/columns .* are not unique/i' => MDB2_ERROR_CONSTRAINT,
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'/uniqueness constraint failed/' => MDB2_ERROR_CONSTRAINT,
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'/violates .*constraint/' => MDB2_ERROR_CONSTRAINT,
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'/may not be NULL/' => MDB2_ERROR_CONSTRAINT_NOT_NULL,
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'/^no such column:/' => MDB2_ERROR_NOSUCHFIELD,
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'/no column named/' => MDB2_ERROR_NOSUCHFIELD,
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'/column not present in both tables/i' => MDB2_ERROR_NOSUCHFIELD,
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'/^near ".*": syntax error$/' => MDB2_ERROR_SYNTAX,
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'/[0-9]+ values for [0-9]+ columns/i' => MDB2_ERROR_VALUE_COUNT_ON_ROW,
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);
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}
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foreach ($error_regexps as $regexp => $code) {
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if (preg_match($regexp, $native_msg)) {
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$error = $code;
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break;
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}
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}
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}
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return array($error, $native_code, $native_msg);
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}
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// }}}
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// {{{ escape()
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/**
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* Quotes a string so it can be safely used in a query. It will quote
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* the text so it can safely be used within a query.
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*
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* @param string the input string to quote
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* @param bool escape wildcards
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*
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* @return string quoted string
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*
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* @access public
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*/
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function escape($text, $escape_wildcards = false)
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{
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$text = @sqlite_escape_string($text);
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return $text;
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}
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// }}}
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// {{{ beginTransaction()
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/**
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* Start a transaction or set a savepoint.
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*
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* @param string name of a savepoint to set
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function beginTransaction($savepoint = null)
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{
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$this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (null !== $savepoint) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'savepoints are not supported', __FUNCTION__);
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}
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if ($this->in_transaction) {
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return MDB2_OK; //nothing to do
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}
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if (!$this->destructor_registered && $this->opened_persistent) {
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$this->destructor_registered = true;
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register_shutdown_function('MDB2_closeOpenTransactions');
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}
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$query = 'BEGIN TRANSACTION '.$this->options['base_transaction_name'];
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$result = $this->_doQuery($query, true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$this->in_transaction = true;
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return MDB2_OK;
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}
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// }}}
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// {{{ commit()
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/**
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* Commit the database changes done during a transaction that is in
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* progress or release a savepoint. This function may only be called when
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* auto-committing is disabled, otherwise it will fail. Therefore, a new
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* transaction is implicitly started after committing the pending changes.
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*
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* @param string name of a savepoint to release
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function commit($savepoint = null)
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{
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$this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
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}
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if (null !== $savepoint) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'savepoints are not supported', __FUNCTION__);
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}
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$query = 'COMMIT TRANSACTION '.$this->options['base_transaction_name'];
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$result = $this->_doQuery($query, true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$this->in_transaction = false;
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return MDB2_OK;
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}
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// }}}
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// {{{
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/**
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* Cancel any database changes done during a transaction or since a specific
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* savepoint that is in progress. This function may only be called when
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* auto-committing is disabled, otherwise it will fail. Therefore, a new
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* transaction is implicitly started after canceling the pending changes.
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*
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* @param string name of a savepoint to rollback to
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function rollback($savepoint = null)
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{
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$this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'rollback cannot be done changes are auto committed', __FUNCTION__);
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}
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if (null !== $savepoint) {
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'savepoints are not supported', __FUNCTION__);
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}
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$query = 'ROLLBACK TRANSACTION '.$this->options['base_transaction_name'];
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$result = $this->_doQuery($query, true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$this->in_transaction = false;
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return MDB2_OK;
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}
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// }}}
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// {{{ function setTransactionIsolation()
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/**
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* Set the transacton isolation level.
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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* @param array some transaction options:
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* 'wait' => 'WAIT' | 'NO WAIT'
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* 'rw' => 'READ WRITE' | 'READ ONLY'
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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* @since 2.1.1
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*/
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function setTransactionIsolation($isolation, $options = array())
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{
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$this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
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switch ($isolation) {
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case 'READ UNCOMMITTED':
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$isolation = 0;
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break;
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case 'READ COMMITTED':
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case 'REPEATABLE READ':
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case 'SERIALIZABLE':
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$isolation = 1;
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break;
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default:
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return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'isolation level is not supported: '.$isolation, __FUNCTION__);
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}
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$query = "PRAGMA read_uncommitted=$isolation";
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return $this->_doQuery($query, true);
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}
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// }}}
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// {{{ getDatabaseFile()
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/**
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||
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* Builds the string with path+dbname+extension
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*
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* @return string full database path+file
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* @access protected
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*/
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function _getDatabaseFile($database_name)
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{
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if ($database_name === '' || $database_name === ':memory:') {
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return $database_name;
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}
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return $this->options['database_path'].$database_name.$this->options['database_extension'];
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}
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// }}}
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// {{{ connect()
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||
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/**
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||
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* Connect to the database
|
||
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*
|
||
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* @return true on success, MDB2 Error Object on failure
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||
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**/
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||
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function connect()
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||
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{
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||
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$database_file = $this->_getDatabaseFile($this->database_name);
|
||
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if (is_resource($this->connection)) {
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//if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
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||
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if (MDB2::areEquals($this->connected_dsn, $this->dsn)
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||
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&& $this->connected_database_name == $database_file
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||
|
|
&& $this->opened_persistent == $this->options['persistent']
|
||
|
|
) {
|
||
|
|
return MDB2_OK;
|
||
|
|
}
|
||
|
|
$this->disconnect(false);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!extension_loaded($this->phptype)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
||
|
|
'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (empty($this->database_name)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
|
||
|
|
'unable to establish a connection', __FUNCTION__);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($database_file !== ':memory:') {
|
||
|
|
if (!file_exists($database_file)) {
|
||
|
|
if (!touch($database_file)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
||
|
|
'Could not create database file', __FUNCTION__);
|
||
|
|
}
|
||
|
|
if (!isset($this->dsn['mode'])
|
||
|
|
|| !is_numeric($this->dsn['mode'])
|
||
|
|
) {
|
||
|
|
$mode = 0644;
|
||
|
|
} else {
|
||
|
|
$mode = octdec($this->dsn['mode']);
|
||
|
|
}
|
||
|
|
if (!chmod($database_file, $mode)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
||
|
|
'Could not be chmodded database file', __FUNCTION__);
|
||
|
|
}
|
||
|
|
if (!file_exists($database_file)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
|
||
|
|
'Could not be found database file', __FUNCTION__);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!is_file($database_file)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_INVALID, null, null,
|
||
|
|
'Database is a directory name', __FUNCTION__);
|
||
|
|
}
|
||
|
|
if (!is_readable($database_file)) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_ACCESS_VIOLATION, null, null,
|
||
|
|
'Could not read database file', __FUNCTION__);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$connect_function = ($this->options['persistent'] ? 'sqlite_popen' : 'sqlite_open');
|
||
|
|
$php_errormsg = '';
|
||
|
|
if (version_compare('5.1.0', PHP_VERSION, '>')) {
|
||
|
|
@ini_set('track_errors', true);
|
||
|
|
$connection = @$connect_function($database_file);
|
||
|
|
@ini_restore('track_errors');
|
||
|
|
} else {
|
||
|
|
$connection = @$connect_function($database_file, 0666, $php_errormsg);
|
||
|
|
}
|
||
|
|
$this->_lasterror = $php_errormsg;
|
||
|
|
if (!$connection) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
|
||
|
|
'unable to establish a connection', __FUNCTION__);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->fix_assoc_fields_names ||
|
||
|
|
$this->options['portability'] & MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES)
|
||
|
|
{
|
||
|
|
@sqlite_query("PRAGMA short_column_names = 1", $connection);
|
||
|
|
$this->fix_assoc_fields_names = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->connection = $connection;
|
||
|
|
$this->connected_dsn = $this->dsn;
|
||
|
|
$this->connected_database_name = $database_file;
|
||
|
|
$this->opened_persistent = $this->getoption('persistent');
|
||
|
|
$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
|
||
|
|
|
||
|
|
return MDB2_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ databaseExists()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* check if given database name is exists?
|
||
|
|
*
|
||
|
|
* @param string $name name of the database that should be checked
|
||
|
|
*
|
||
|
|
* @return mixed true/false on success, a MDB2 error on failure
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function databaseExists($name)
|
||
|
|
{
|
||
|
|
$database_file = $this->_getDatabaseFile($name);
|
||
|
|
$result = file_exists($database_file);
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ disconnect()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Log out and disconnect from the database.
|
||
|
|
*
|
||
|
|
* @param boolean $force if the disconnect should be forced even if the
|
||
|
|
* connection is opened persistently
|
||
|
|
* @return mixed true on success, false if not connected and error
|
||
|
|
* object on error
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function disconnect($force = true)
|
||
|
|
{
|
||
|
|
if (is_resource($this->connection)) {
|
||
|
|
if ($this->in_transaction) {
|
||
|
|
$dsn = $this->dsn;
|
||
|
|
$database_name = $this->database_name;
|
||
|
|
$persistent = $this->options['persistent'];
|
||
|
|
$this->dsn = $this->connected_dsn;
|
||
|
|
$this->database_name = $this->connected_database_name;
|
||
|
|
$this->options['persistent'] = $this->opened_persistent;
|
||
|
|
$this->rollback();
|
||
|
|
$this->dsn = $dsn;
|
||
|
|
$this->database_name = $database_name;
|
||
|
|
$this->options['persistent'] = $persistent;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->opened_persistent || $force) {
|
||
|
|
@sqlite_close($this->connection);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return parent::disconnect($force);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _doQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Execute a query
|
||
|
|
* @param string $query query
|
||
|
|
* @param boolean $is_manip if the query is a manipulation query
|
||
|
|
* @param resource $connection
|
||
|
|
* @param string $database_name
|
||
|
|
* @return result or error object
|
||
|
|
* @access protected
|
||
|
|
*/
|
||
|
|
function _doQuery($query, $is_manip = false, $connection = null, $database_name = null)
|
||
|
|
{
|
||
|
|
$this->last_query = $query;
|
||
|
|
$result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
|
||
|
|
if ($result) {
|
||
|
|
if (MDB2::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
$query = $result;
|
||
|
|
}
|
||
|
|
if ($this->options['disable_query']) {
|
||
|
|
$result = $is_manip ? 0 : null;
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (null === $connection) {
|
||
|
|
$connection = $this->getConnection();
|
||
|
|
if (MDB2::isError($connection)) {
|
||
|
|
return $connection;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$function = $this->options['result_buffering']
|
||
|
|
? 'sqlite_query' : 'sqlite_unbuffered_query';
|
||
|
|
$php_errormsg = '';
|
||
|
|
if (version_compare('5.1.0', PHP_VERSION, '>')) {
|
||
|
|
@ini_set('track_errors', true);
|
||
|
|
do {
|
||
|
|
$result = @$function($query.';', $connection);
|
||
|
|
} while (sqlite_last_error($connection) == SQLITE_SCHEMA);
|
||
|
|
@ini_restore('track_errors');
|
||
|
|
} else {
|
||
|
|
do {
|
||
|
|
$result = @$function($query.';', $connection, SQLITE_BOTH, $php_errormsg);
|
||
|
|
} while (sqlite_last_error($connection) == SQLITE_SCHEMA);
|
||
|
|
}
|
||
|
|
$this->_lasterror = $php_errormsg;
|
||
|
|
|
||
|
|
if (!$result) {
|
||
|
|
$code = null;
|
||
|
|
if (0 === strpos($this->_lasterror, 'no such table')) {
|
||
|
|
$code = MDB2_ERROR_NOSUCHTABLE;
|
||
|
|
}
|
||
|
|
$err = $this->raiseError($code, null, null,
|
||
|
|
'Could not execute statement', __FUNCTION__);
|
||
|
|
return $err;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _affectedRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the number of rows affected
|
||
|
|
*
|
||
|
|
* @param resource $result
|
||
|
|
* @param resource $connection
|
||
|
|
* @return mixed MDB2 Error Object or the number of rows affected
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _affectedRows($connection, $result = null)
|
||
|
|
{
|
||
|
|
if (null === $connection) {
|
||
|
|
$connection = $this->getConnection();
|
||
|
|
if (MDB2::isError($connection)) {
|
||
|
|
return $connection;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return @sqlite_changes($connection);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _modifyQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Changes a query string for various DBMS specific reasons
|
||
|
|
*
|
||
|
|
* @param string $query query to modify
|
||
|
|
* @param boolean $is_manip if it is a DML query
|
||
|
|
* @param integer $limit limit the number of rows
|
||
|
|
* @param integer $offset start reading from given offset
|
||
|
|
* @return string modified query
|
||
|
|
* @access protected
|
||
|
|
*/
|
||
|
|
function _modifyQuery($query, $is_manip, $limit, $offset)
|
||
|
|
{
|
||
|
|
if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT) {
|
||
|
|
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
|
||
|
|
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
|
||
|
|
'DELETE FROM \1 WHERE 1=1', $query);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($limit > 0
|
||
|
|
&& !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
|
||
|
|
) {
|
||
|
|
$query = rtrim($query);
|
||
|
|
if (substr($query, -1) == ';') {
|
||
|
|
$query = substr($query, 0, -1);
|
||
|
|
}
|
||
|
|
if ($is_manip) {
|
||
|
|
$query.= " LIMIT $limit";
|
||
|
|
} else {
|
||
|
|
$query.= " LIMIT $offset,$limit";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $query;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ getServerVersion()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* return version information about the server
|
||
|
|
*
|
||
|
|
* @param bool $native determines if the raw version string should be returned
|
||
|
|
* @return mixed array/string with version information or MDB2 error object
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function getServerVersion($native = false)
|
||
|
|
{
|
||
|
|
$server_info = false;
|
||
|
|
if ($this->connected_server_info) {
|
||
|
|
$server_info = $this->connected_server_info;
|
||
|
|
} elseif ($this->options['server_version']) {
|
||
|
|
$server_info = $this->options['server_version'];
|
||
|
|
} elseif (function_exists('sqlite_libversion')) {
|
||
|
|
$server_info = @sqlite_libversion();
|
||
|
|
}
|
||
|
|
if (!$server_info) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
||
|
|
'Requires either the "server_version" option or the sqlite_libversion() function', __FUNCTION__);
|
||
|
|
}
|
||
|
|
// cache server_info
|
||
|
|
$this->connected_server_info = $server_info;
|
||
|
|
if (!$native) {
|
||
|
|
$tmp = explode('.', $server_info, 3);
|
||
|
|
$server_info = array(
|
||
|
|
'major' => isset($tmp[0]) ? $tmp[0] : null,
|
||
|
|
'minor' => isset($tmp[1]) ? $tmp[1] : null,
|
||
|
|
'patch' => isset($tmp[2]) ? $tmp[2] : null,
|
||
|
|
'extra' => null,
|
||
|
|
'native' => $server_info,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
return $server_info;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ replace()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
|
||
|
|
* query, except that if there is already a row in the table with the same
|
||
|
|
* key field values, the old row is deleted before the new row is inserted.
|
||
|
|
*
|
||
|
|
* The REPLACE type of query does not make part of the SQL standards. Since
|
||
|
|
* practically only SQLite implements it natively, this type of query is
|
||
|
|
* emulated through this method for other DBMS using standard types of
|
||
|
|
* queries inside a transaction to assure the atomicity of the operation.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $table name of the table on which the REPLACE query will
|
||
|
|
* be executed.
|
||
|
|
* @param array $fields associative array that describes the fields and the
|
||
|
|
* values that will be inserted or updated in the specified table. The
|
||
|
|
* indexes of the array are the names of all the fields of the table. The
|
||
|
|
* values of the array are also associative arrays that describe the
|
||
|
|
* values and other properties of the table fields.
|
||
|
|
*
|
||
|
|
* Here follows a list of field properties that need to be specified:
|
||
|
|
*
|
||
|
|
* value:
|
||
|
|
* Value to be assigned to the specified field. This value may be
|
||
|
|
* of specified in database independent type format as this
|
||
|
|
* function can perform the necessary datatype conversions.
|
||
|
|
*
|
||
|
|
* Default:
|
||
|
|
* this property is required unless the Null property
|
||
|
|
* is set to 1.
|
||
|
|
*
|
||
|
|
* type
|
||
|
|
* Name of the type of the field. Currently, all types Metabase
|
||
|
|
* are supported except for clob and blob.
|
||
|
|
*
|
||
|
|
* Default: no type conversion
|
||
|
|
*
|
||
|
|
* null
|
||
|
|
* Boolean property that indicates that the value for this field
|
||
|
|
* should be set to null.
|
||
|
|
*
|
||
|
|
* The default value for fields missing in INSERT queries may be
|
||
|
|
* specified the definition of a table. Often, the default value
|
||
|
|
* is already null, but since the REPLACE may be emulated using
|
||
|
|
* an UPDATE query, make sure that all fields of the table are
|
||
|
|
* listed in this function argument array.
|
||
|
|
*
|
||
|
|
* Default: 0
|
||
|
|
*
|
||
|
|
* key
|
||
|
|
* Boolean property that indicates that this field should be
|
||
|
|
* handled as a primary key or at least as part of the compound
|
||
|
|
* unique index of the table that will determine the row that will
|
||
|
|
* updated if it exists or inserted a new row otherwise.
|
||
|
|
*
|
||
|
|
* This function will fail if no key field is specified or if the
|
||
|
|
* value of a key field is set to null because fields that are
|
||
|
|
* part of unique index they may not be null.
|
||
|
|
*
|
||
|
|
* Default: 0
|
||
|
|
*
|
||
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
||
|
|
*/
|
||
|
|
function replace($table, $fields)
|
||
|
|
{
|
||
|
|
$count = count($fields);
|
||
|
|
$query = $values = '';
|
||
|
|
$keys = $colnum = 0;
|
||
|
|
for (reset($fields); $colnum < $count; next($fields), $colnum++) {
|
||
|
|
$name = key($fields);
|
||
|
|
if ($colnum > 0) {
|
||
|
|
$query .= ',';
|
||
|
|
$values.= ',';
|
||
|
|
}
|
||
|
|
$query.= $this->quoteIdentifier($name, true);
|
||
|
|
if (isset($fields[$name]['null']) && $fields[$name]['null']) {
|
||
|
|
$value = 'NULL';
|
||
|
|
} else {
|
||
|
|
$type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
|
||
|
|
$value = $this->quote($fields[$name]['value'], $type);
|
||
|
|
if (MDB2::isError($value)) {
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$values.= $value;
|
||
|
|
if (isset($fields[$name]['key']) && $fields[$name]['key']) {
|
||
|
|
if ($value === 'NULL') {
|
||
|
|
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
|
||
|
|
'key value '.$name.' may not be NULL', __FUNCTION__);
|
||
|
|
}
|
||
|
|
$keys++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($keys == 0) {
|
||
|
|
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
|
||
|
|
'not specified which fields are keys', __FUNCTION__);
|
||
|
|
}
|
||
|
|
|
||
|
|
$connection = $this->getConnection();
|
||
|
|
if (MDB2::isError($connection)) {
|
||
|
|
return $connection;
|
||
|
|
}
|
||
|
|
|
||
|
|
$table = $this->quoteIdentifier($table, true);
|
||
|
|
$query = "REPLACE INTO $table ($query) VALUES ($values)";
|
||
|
|
$result = $this->_doQuery($query, true, $connection);
|
||
|
|
if (MDB2::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
return $this->_affectedRows($connection, $result);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ nextID()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the next free id of a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence
|
||
|
|
* @param boolean $ondemand when true the sequence is
|
||
|
|
* automatic created, if it
|
||
|
|
* not exists
|
||
|
|
*
|
||
|
|
* @return mixed MDB2 Error Object or id
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function nextID($seq_name, $ondemand = true)
|
||
|
|
{
|
||
|
|
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
|
||
|
|
$seqcol_name = $this->options['seqcol_name'];
|
||
|
|
$query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$this->expectError(MDB2_ERROR_NOSUCHTABLE);
|
||
|
|
$result = $this->_doQuery($query, true);
|
||
|
|
$this->popExpect();
|
||
|
|
$this->popErrorHandling();
|
||
|
|
if (MDB2::isError($result)) {
|
||
|
|
if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
|
||
|
|
$this->loadModule('Manager', null, true);
|
||
|
|
$result = $this->manager->createSequence($seq_name);
|
||
|
|
if (MDB2::isError($result)) {
|
||
|
|
return $this->raiseError($result, null, null,
|
||
|
|
'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
|
||
|
|
} else {
|
||
|
|
return $this->nextID($seq_name, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
$value = $this->lastInsertID();
|
||
|
|
if (is_numeric($value)) {
|
||
|
|
$query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
|
||
|
|
$result = $this->_doQuery($query, true);
|
||
|
|
if (MDB2::isError($result)) {
|
||
|
|
$this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ lastInsertID()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the autoincrement ID if supported or $id or fetches the current
|
||
|
|
* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
|
||
|
|
*
|
||
|
|
* @param string $table name of the table into which a new row was inserted
|
||
|
|
* @param string $field name of the field into which a new row was inserted
|
||
|
|
* @return mixed MDB2 Error Object or id
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function lastInsertID($table = null, $field = null)
|
||
|
|
{
|
||
|
|
$connection = $this->getConnection();
|
||
|
|
if (MDB2::isError($connection)) {
|
||
|
|
return $connection;
|
||
|
|
}
|
||
|
|
$value = @sqlite_last_insert_rowid($connection);
|
||
|
|
if (!$value) {
|
||
|
|
return $this->raiseError(null, null, null,
|
||
|
|
'Could not get last insert ID', __FUNCTION__);
|
||
|
|
}
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ currID()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current id of a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence
|
||
|
|
* @return mixed MDB2 Error Object or id
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function currID($seq_name)
|
||
|
|
{
|
||
|
|
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
|
||
|
|
$seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
|
||
|
|
$query = "SELECT MAX($seqcol_name) FROM $sequence_name";
|
||
|
|
return $this->queryOne($query, 'integer');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* MDB2 SQLite result driver
|
||
|
|
*
|
||
|
|
* @package MDB2
|
||
|
|
* @category Database
|
||
|
|
* @author Lukas Smith <smith@pooteeweet.org>
|
||
|
|
*/
|
||
|
|
class MDB2_Result_sqlite extends MDB2_Result_Common
|
||
|
|
{
|
||
|
|
// }}}
|
||
|
|
// {{{ fetchRow()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fetch a row and insert the data into an existing array.
|
||
|
|
*
|
||
|
|
* @param int $fetchmode how the array data should be indexed
|
||
|
|
* @param int $rownum number of the row where the data can be found
|
||
|
|
* @return int data array on success, a MDB2 error on failure
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
|
||
|
|
{
|
||
|
|
if (null !== $rownum) {
|
||
|
|
$seek = $this->seek($rownum);
|
||
|
|
if (MDB2::isError($seek)) {
|
||
|
|
return $seek;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
|
||
|
|
$fetchmode = $this->db->fetchmode;
|
||
|
|
}
|
||
|
|
if ( $fetchmode == MDB2_FETCHMODE_ASSOC
|
||
|
|
|| $fetchmode == MDB2_FETCHMODE_OBJECT
|
||
|
|
) {
|
||
|
|
$row = @sqlite_fetch_array($this->result, SQLITE_ASSOC);
|
||
|
|
if (is_array($row)
|
||
|
|
&& $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
||
|
|
) {
|
||
|
|
$row = array_change_key_case($row, $this->db->options['field_case']);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$row = @sqlite_fetch_array($this->result, SQLITE_NUM);
|
||
|
|
}
|
||
|
|
if (!$row) {
|
||
|
|
if (false === $this->result) {
|
||
|
|
$err = $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
||
|
|
'resultset has already been freed', __FUNCTION__);
|
||
|
|
return $err;
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
$mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
|
||
|
|
$rtrim = false;
|
||
|
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
|
||
|
|
if (empty($this->types)) {
|
||
|
|
$mode += MDB2_PORTABILITY_RTRIM;
|
||
|
|
} else {
|
||
|
|
$rtrim = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($mode) {
|
||
|
|
$this->db->_fixResultArrayValues($row, $mode);
|
||
|
|
}
|
||
|
|
if ( ( $fetchmode != MDB2_FETCHMODE_ASSOC
|
||
|
|
&& $fetchmode != MDB2_FETCHMODE_OBJECT)
|
||
|
|
&& !empty($this->types)
|
||
|
|
) {
|
||
|
|
$row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
|
||
|
|
} elseif (($fetchmode == MDB2_FETCHMODE_ASSOC
|
||
|
|
|| $fetchmode == MDB2_FETCHMODE_OBJECT)
|
||
|
|
&& !empty($this->types_assoc)
|
||
|
|
) {
|
||
|
|
$row = $this->db->datatype->convertResultRow($this->types_assoc, $row, $rtrim);
|
||
|
|
}
|
||
|
|
if (!empty($this->values)) {
|
||
|
|
$this->_assignBindColumns($row);
|
||
|
|
}
|
||
|
|
if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
|
||
|
|
$object_class = $this->db->options['fetch_class'];
|
||
|
|
if ($object_class == 'stdClass') {
|
||
|
|
$row = (object) $row;
|
||
|
|
} else {
|
||
|
|
$rowObj = new $object_class($row);
|
||
|
|
$row = $rowObj;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
++$this->rownum;
|
||
|
|
return $row;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _getColumnNames()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve the names of columns returned by the DBMS in a query result.
|
||
|
|
*
|
||
|
|
* @return mixed Array variable that holds the names of columns as keys
|
||
|
|
* or an MDB2 error on failure.
|
||
|
|
* Some DBMS may not return any columns when the result set
|
||
|
|
* does not contain any rows.
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _getColumnNames()
|
||
|
|
{
|
||
|
|
$columns = array();
|
||
|
|
$numcols = $this->numCols();
|
||
|
|
if (MDB2::isError($numcols)) {
|
||
|
|
return $numcols;
|
||
|
|
}
|
||
|
|
for ($column = 0; $column < $numcols; $column++) {
|
||
|
|
$column_name = @sqlite_field_name($this->result, $column);
|
||
|
|
$columns[$column_name] = $column;
|
||
|
|
}
|
||
|
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
||
|
|
$columns = array_change_key_case($columns, $this->db->options['field_case']);
|
||
|
|
}
|
||
|
|
return $columns;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numCols()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Count the number of columns returned by the DBMS in a query result.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @return mixed integer value with the number of columns, a MDB2 error
|
||
|
|
* on failure
|
||
|
|
*/
|
||
|
|
function numCols()
|
||
|
|
{
|
||
|
|
$cols = @sqlite_num_fields($this->result);
|
||
|
|
if (null === $cols) {
|
||
|
|
if (false === $this->result) {
|
||
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
||
|
|
'resultset has already been freed', __FUNCTION__);
|
||
|
|
}
|
||
|
|
if (null === $this->result) {
|
||
|
|
return count($this->types);
|
||
|
|
}
|
||
|
|
return $this->db->raiseError(null, null, null,
|
||
|
|
'Could not get column count', __FUNCTION__);
|
||
|
|
}
|
||
|
|
return $cols;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* MDB2 SQLite buffered result driver
|
||
|
|
*
|
||
|
|
* @package MDB2
|
||
|
|
* @category Database
|
||
|
|
* @author Lukas Smith <smith@pooteeweet.org>
|
||
|
|
*/
|
||
|
|
class MDB2_BufferedResult_sqlite extends MDB2_Result_sqlite
|
||
|
|
{
|
||
|
|
// {{{ seek()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Seek to a specific row in a result set
|
||
|
|
*
|
||
|
|
* @param int $rownum number of the row where the data can be found
|
||
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function seek($rownum = 0)
|
||
|
|
{
|
||
|
|
if (!@sqlite_seek($this->result, $rownum)) {
|
||
|
|
if (false === $this->result) {
|
||
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
||
|
|
'resultset has already been freed', __FUNCTION__);
|
||
|
|
}
|
||
|
|
if (null === $this->result) {
|
||
|
|
return MDB2_OK;
|
||
|
|
}
|
||
|
|
return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
|
||
|
|
'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
|
||
|
|
}
|
||
|
|
$this->rownum = $rownum - 1;
|
||
|
|
return MDB2_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ valid()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the end of the result set has been reached
|
||
|
|
*
|
||
|
|
* @return mixed true or false on sucess, a MDB2 error on failure
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function valid()
|
||
|
|
{
|
||
|
|
$numrows = $this->numRows();
|
||
|
|
if (MDB2::isError($numrows)) {
|
||
|
|
return $numrows;
|
||
|
|
}
|
||
|
|
return $this->rownum < ($numrows - 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the number of rows in a result object
|
||
|
|
*
|
||
|
|
* @return mixed MDB2 Error Object or the number of rows
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function numRows()
|
||
|
|
{
|
||
|
|
$rows = @sqlite_num_rows($this->result);
|
||
|
|
if (null === $rows) {
|
||
|
|
if (false === $this->result) {
|
||
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
||
|
|
'resultset has already been freed', __FUNCTION__);
|
||
|
|
}
|
||
|
|
if (null === $this->result) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return $this->db->raiseError(null, null, null,
|
||
|
|
'Could not get row count', __FUNCTION__);
|
||
|
|
}
|
||
|
|
return $rows;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* MDB2 SQLite statement driver
|
||
|
|
*
|
||
|
|
* @package MDB2
|
||
|
|
* @category Database
|
||
|
|
* @author Lukas Smith <smith@pooteeweet.org>
|
||
|
|
*/
|
||
|
|
class MDB2_Statement_sqlite extends MDB2_Statement_Common
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
?>
|