<?php
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// vim: set et ts=4 sw=4 fdm=marker:
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: 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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* MDB2 FireBird/InterBase driver
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*
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* @package MDB2
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* @category Database
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* @author Lorenzo Alberton <l.alberton@quipo.it>
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*/
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class MDB2_Driver_ibase extends MDB2_Driver_Common
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{
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// {{{ properties
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var $escape_quotes = "'";
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var $transaction_id = 0;
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var $query_parameters = array();
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var $query_parameter_values = array();
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// }}}
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// {{{ constructor
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/**
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* Constructor
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*/
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function __construct()
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{
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parent::__construct();
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$this->phptype = 'ibase';
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$this->dbsyntax = 'ibase';
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$this->supported['sequences'] = true;
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$this->supported['indexes'] = true;
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$this->supported['affected_rows'] = function_exists('ibase_affected_rows');
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$this->supported['summary_functions'] = true;
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$this->supported['order_by_text'] = true;
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$this->supported['transactions'] = true;
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$this->supported['current_id'] = true;
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// maybe this needs different handling for ibase and firebird?
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$this->supported['limit_queries'] = 'emulated';
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$this->supported['LOBs'] = true;
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$this->supported['replace'] = false;
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$this->supported['sub_selects'] = true;
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$this->supported['auto_increment'] = true;
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$this->supported['primary_key'] = true;
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$this->options['database_path'] = '';
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$this->options['database_extension'] = '.gdb';
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$this->options['default_text_field_length'] = 4096;
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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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$native_msg = @ibase_errmsg();
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if (function_exists('ibase_errcode')) {
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$native_code = @ibase_errcode();
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} else {
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// memo for the interbase php module hackers: we need something similar
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// to mysql_errno() to retrieve error codes instead of this ugly hack
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if (preg_match('/^([^0-9\-]+)([0-9\-]+)\s+(.*)$/', $native_msg, $m)) {
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$native_code = (int)$m[2];
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} else {
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$native_code = null;
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}
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}
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if (is_null($error)) {
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$error = MDB2_ERROR;
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if ($native_code) {
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// try to interpret Interbase error code (that's why we need ibase_errno()
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// in the interbase module to return the real error code)
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switch ($native_code) {
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case -204:
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if (isset($m[3]) && is_int(strpos($m[3], 'Table unknown'))) {
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$errno = MDB2_ERROR_NOSUCHTABLE;
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}
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break;
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default:
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static $ecode_map;
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if (empty($ecode_map)) {
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$ecode_map = array(
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-104 => MDB2_ERROR_SYNTAX,
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-150 => MDB2_ERROR_ACCESS_VIOLATION,
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-151 => MDB2_ERROR_ACCESS_VIOLATION,
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-155 => MDB2_ERROR_NOSUCHTABLE,
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-157 => MDB2_ERROR_NOSUCHFIELD,
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-158 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
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-170 => MDB2_ERROR_MISMATCH,
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-171 => MDB2_ERROR_MISMATCH,
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-172 => MDB2_ERROR_INVALID,
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// -204 => // Covers too many errors, need to use regex on msg
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-205 => MDB2_ERROR_NOSUCHFIELD,
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-206 => MDB2_ERROR_NOSUCHFIELD,
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-208 => MDB2_ERROR_INVALID,
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-219 => MDB2_ERROR_NOSUCHTABLE,
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-297 => MDB2_ERROR_CONSTRAINT,
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-303 => MDB2_ERROR_INVALID,
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-413 => MDB2_ERROR_INVALID_NUMBER,
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-530 => MDB2_ERROR_CONSTRAINT,
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-551 => MDB2_ERROR_ACCESS_VIOLATION,
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-552 => MDB2_ERROR_ACCESS_VIOLATION,
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// -607 => // Covers too many errors, need to use regex on msg
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-625 => MDB2_ERROR_CONSTRAINT_NOT_NULL,
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-803 => MDB2_ERROR_CONSTRAINT,
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-804 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
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-904 => MDB2_ERROR_CONNECT_FAILED,
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-922 => MDB2_ERROR_NOSUCHDB,
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-923 => MDB2_ERROR_CONNECT_FAILED,
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-924 => MDB2_ERROR_CONNECT_FAILED
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);
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}
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if (isset($ecode_map[$native_code])) {
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$error = $ecode_map[$native_code];
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}
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break;
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}
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} else {
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static $error_regexps;
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if (!isset($error_regexps)) {
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$error_regexps = array(
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'/generator .* is not defined/'
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=> MDB2_ERROR_SYNTAX, // for compat. w ibase_errcode()
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'/table.*(not exist|not found|unknown)/i'
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=> MDB2_ERROR_NOSUCHTABLE,
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'/table .* already exists/i'
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=> MDB2_ERROR_ALREADY_EXISTS,
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'/unsuccessful metadata update .* failed attempt to store duplicate value/i'
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=> MDB2_ERROR_ALREADY_EXISTS,
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'/unsuccessful metadata update .* not found/i'
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=> MDB2_ERROR_NOT_FOUND,
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'/validation error for column .* value "\*\*\* null/i'
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=> MDB2_ERROR_CONSTRAINT_NOT_NULL,
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'/violation of [\w ]+ constraint/i'
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=> MDB2_ERROR_CONSTRAINT,
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'/conversion error from string/i'
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=> MDB2_ERROR_INVALID_NUMBER,
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'/no permission for/i'
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=> MDB2_ERROR_ACCESS_VIOLATION,
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'/arithmetic exception, numeric overflow, or string truncation/i'
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=> MDB2_ERROR_INVALID,
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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, $m)) {
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$error = $code;
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break;
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}
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}
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}
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}
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return array($error, $native_code, $native_msg);
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}
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// }}}
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// {{{ beginTransaction()
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/**
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* Start a transaction.
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function beginTransaction()
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{
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$this->debug('starting transaction', 'beginTransaction');
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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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$result = ibase_trans();
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if (!$result) {
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return $this->raiseError(MDB2_ERROR, null, null,
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'beginTransaction: could not start a transaction');
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}
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$this->transaction_id = $result;
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$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.
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function commit()
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{
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$this->debug('commit transaction', 'commit');
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR, null, null,
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'commit: transaction changes are being auto committed');
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}
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if (!ibase_commit($this->transaction_id)) {
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return $this->raiseError(MDB2_ERROR, null, null,
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'commit: could not commit a transaction');
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}
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$this->in_transaction = false;
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//$this->transaction_id = 0;
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return MDB2_OK;
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}
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// }}}
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// {{{ rollback()
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/**
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* Cancel any database changes done during a transaction that is in
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* progress.
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function rollback()
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{
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$this->debug('rolling back transaction', 'rollback');
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR, null, null,
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'rollback: transactions can not be rolled back when changes are auto committed');
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}
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if ($this->transaction_id && !ibase_rollback($this->transaction_id)) {
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return $this->raiseError(MDB2_ERROR, null, null,
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'rollback: Could not rollback a pending transaction: '.ibase_errmsg());
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}
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$this->in_transaction = false;
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$this->transaction_id = 0;
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return MDB2_OK;
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}
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// }}}
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// {{{ getDatabaseFile()
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/**
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* Builds the string with path+dbname+extension
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*
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* @return string full database path+file
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* @access protected
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*/
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function _getDatabaseFile($database_name)
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{
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if ($database_name == '') {
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return $database_name;
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}
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return $this->options['database_path'].$database_name.$this->options['database_extension'];
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}
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// }}}
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// {{{ _doConnect()
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/**
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* Does the grunt work of connecting to the database
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*
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* @return mixed connection resource on success, MDB2 Error Object on failure
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* @access protected
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*/
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function _doConnect($database_name, $persistent = false)
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{
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$user = $this->dsn['username'];
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$pw = $this->dsn['password'];
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$dbhost = $this->dsn['hostspec'] ?
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($this->dsn['hostspec'].':'.$database_name) : $database_name;
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$params = array();
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$params[] = $dbhost;
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$params[] = !empty($user) ? $user : null;
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$params[] = !empty($pw) ? $pw : null;
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$params[] = isset($this->dsn['charset']) ? $this->dsn['charset'] : null;
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$params[] = isset($this->dsn['buffers']) ? $this->dsn['buffers'] : null;
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$params[] = isset($this->dsn['dialect']) ? $this->dsn['dialect'] : null;
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$params[] = isset($this->dsn['role']) ? $this->dsn['role'] : null;
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$connect_function = $persistent ? 'ibase_pconnect' : 'ibase_connect';
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$connection = @call_user_func_array($connect_function, $params);
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if ($connection <= 0) {
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return $this->raiseError(MDB2_ERROR_CONNECT_FAILED);
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}
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if (function_exists('ibase_timefmt')) {
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@ibase_timefmt("%Y-%m-%d %H:%M:%S", IBASE_TIMESTAMP);
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@ibase_timefmt("%Y-%m-%d", IBASE_DATE);
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} else {
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@ini_set("ibase.timestampformat", "%Y-%m-%d %H:%M:%S");
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//@ini_set("ibase.timeformat", "%H:%M:%S");
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@ini_set("ibase.dateformat", "%Y-%m-%d");
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}
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return $connection;
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}
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// }}}
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// {{{ connect()
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/**
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* Connect to the database
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*
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* @return true on success, MDB2 Error Object on failure
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* @access public
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*/
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function connect()
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{
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$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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&& $this->connected_database_name == $database_file
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&& $this->opened_persistent == $this->options['persistent']
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) {
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return MDB2_OK;
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}
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$this->disconnect(false);
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}
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if (!PEAR::loadExtension('interbase')) {
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return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'connect: extension '.$this->phptype.' is not compiled into PHP');
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}
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if (!empty($this->database_name)) {
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$connection = $this->_doConnect($database_file, $this->options['persistent']);
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if (PEAR::isError($connection)) {
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return $connection;
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}
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$this->connection =& $connection;
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$this->connected_dsn = $this->dsn;
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$this->connected_database_name = $database_file;
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$this->opened_persistent = $this->options['persistent'];
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$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ disconnect()
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/**
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* Log out and disconnect from the database.
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*
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* @return mixed true on success, false if not connected and error
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* object on error
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* @access public
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*/
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function disconnect($force = true)
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{
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if (is_resource($this->connection)) {
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if (!$this->opened_persistent || $force) {
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@ibase_close($this->connection);
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}
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$this->connection = 0;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ _doQuery()
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/**
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* Execute a query
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* @param string $query query
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* @param boolean $isManip if the query is a manipulation query
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* @param resource $connection
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* @param string $database_name
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* @return result or error object
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* @access protected
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*/
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function _doQuery($query, $isManip = false, $connection = null, $database_name = null)
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{
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$this->last_query = $query;
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$this->debug($query, 'query');
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if ($this->getOption('disable_query')) {
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if ($isManip) {
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return 0;
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}
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return null;
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}
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if (is_null($connection)) {
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if ($this->in_transaction) {
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$connection = $this->transaction_id;
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} else {
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$err = $this->connect();
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if (PEAR::isError($err)) {
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return $err;
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}
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$connection = $this->connection;
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}
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}
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$result = ibase_query($connection, $query);
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if ($result === false) {
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return $this->raiseError();
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}
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if ($isManip) {
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//return $result;
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return (function_exists('ibase_affected_rows') ? ibase_affected_rows($connection) : 0);
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}
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return $result;
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}
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// }}}
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// {{{ _modifyQuery()
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/**
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* Changes a query string for various DBMS specific reasons
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*
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* @param string $query query to modify
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* @return the new (modified) query
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* @access protected
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*/
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function _modifyQuery($query, $isManip, $limit, $offset)
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{
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if ($limit > 0 && $this->dsn['dbsyntax'] == 'firebird') {
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$query = preg_replace('/^([\s(])*SELECT(?!\s*FIRST\s*\d+)/i',
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"SELECT FIRST $limit SKIP $offset", $query);
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}
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return $query;
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}
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// }}}
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// {{{ prepare()
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/**
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* Prepares a query for multiple execution with execute().
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* With some database backends, this is emulated.
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* prepare() requires a generic query as string like
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* 'INSERT INTO numbers VALUES(?,?)' or
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* 'INSERT INTO numbers VALUES(:foo,:bar)'.
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* The ? and :[a-zA-Z] and are placeholders which can be set using
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* bindParam() and the query can be send off using the execute() method.
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*
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* @param string $query the query to prepare
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* @param mixed $types array that contains the types of the placeholders
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* @param mixed $result_types array that contains the types of the columns in
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* the result set
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* @return mixed resource handle for the prepared query on success, a MDB2
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* error on failure
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* @access public
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* @see bindParam, execute
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*/
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function &prepare($query, $types = null, $result_types = null)
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{
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$this->debug($query, 'prepare');
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$placeholder_type_guess = $placeholder_type = null;
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$question = '?';
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$colon = ':';
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$position = 0;
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while ($position < strlen($query)) {
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$q_position = strpos($query, $question, $position);
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$c_position = strpos($query, $colon, $position);
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if ($q_position && $c_position) {
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$p_position = min($q_position, $c_position);
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} elseif ($q_position) {
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$p_position = $q_position;
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} elseif ($c_position) {
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$p_position = $c_position;
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} else {
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break;
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}
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if (is_null($placeholder_type)) {
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$placeholder_type_guess = $query[$p_position];
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}
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if (is_int($quote = strpos($query, "'", $position)) && $quote < $p_position) {
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if (!is_int($end_quote = strpos($query, "'", $quote + 1))) {
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$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
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'prepare: query with an unterminated text string specified');
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return $err;
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}
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switch ($this->escape_quotes) {
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case '':
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case "'":
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$position = $end_quote + 1;
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break;
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default:
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if ($end_quote == $quote + 1) {
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$position = $end_quote + 1;
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} else {
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if ($query[$end_quote-1] == $this->escape_quotes) {
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$position = $end_quote;
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} else {
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$position = $end_quote + 1;
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}
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}
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break;
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}
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} elseif ($query[$position] == $placeholder_type_guess) {
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if ($placeholder_type_guess == '?') {
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break;
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}
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if (is_null($placeholder_type)) {
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$placeholder_type = $query[$p_position];
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$question = $colon = $placeholder_type;
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}
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$name = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query);
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if ($name === '') {
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$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
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'prepare: named parameter with an empty name');
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return $err;
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}
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$query = substr_replace($query, '?', $position, strlen($name)+1);
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$position = $p_position + 1;
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} else {
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$position = $p_position;
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}
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}
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$connection = ($this->in_transaction ? $this->transaction_id : $this->connection);
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$statement = ibase_prepare($connection, $query);
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$class_name = 'MDB2_Statement_'.$this->phptype;
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$obj =& new $class_name($this, $statement, $query, $types, $result_types, $this->row_limit, $this->row_offset);
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return $obj;
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}
|
|
// }}}
|
// {{{ nextID()
|
|
/**
|
* returns the next free id of a sequence
|
*
|
* @param string $seq_name name of the sequence
|
* @param boolean $ondemand when true the seqence is
|
* automatic created, if it
|
* not exists
|
* @return mixed MDB2 Error Object or id
|
* @access public
|
*/
|
function nextID($seq_name, $ondemand = true)
|
{
|
$sequence_name = $this->getSequenceName($seq_name);
|
$query = 'SELECT GEN_ID('.strtoupper($sequence_name).', 1) as the_value FROM RDB$DATABASE';
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$this->expectError('*');
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$result = $this->queryOne($query, 'integer');
|
$this->popExpect();
|
if (PEAR::isError($result)) {
|
if ($ondemand) {
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$this->loadModule('Manager');
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// Since we are creating the sequence on demand
|
// we know the first id = 1 so initialize the
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// sequence at 2
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$result = $this->manager->createSequence($seq_name, 2);
|
if (PEAR::isError($result)) {
|
return $this->raiseError(MDB2_ERROR, null, null,
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'nextID: on demand sequence could not be created');
|
} else {
|
// First ID of a newly created sequence is 1
|
// return 1;
|
// BUT generators are not always reset, so return the actual value
|
return $this->currID($seq_name);
|
}
|
}
|
}
|
return $result;
|
}
|
|
// }}}
|
// {{{ 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 = $this->getSequenceName($seq_name);
|
$query = 'SELECT GEN_ID('.strtoupper($sequence_name).', 0) as the_value FROM RDB$DATABASE';
|
$value = @$this->queryOne($query);
|
if (PEAR::isError($value)) {
|
return $this->raiseError(MDB2_ERROR, null, null,
|
'currID: Unable to select from ' . $seq_name) ;
|
}
|
if (!is_numeric($value)) {
|
return $this->raiseError(MDB2_ERROR, null, null,
|
'currID: could not find value in sequence table');
|
}
|
return $value;
|
}
|
|
// }}}
|
}
|
|
class MDB2_Result_ibase extends MDB2_Result_Common
|
{
|
// {{{ _skipLimitOffset()
|
|
/**
|
* Skip the first row of a result set.
|
*
|
* @param resource $result
|
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
|
* @access protected
|
*/
|
function _skipLimitOffset()
|
{
|
if ($this->db->dsn['dbsyntax'] == 'firebird') {
|
return true;
|
}
|
if ($this->limit) {
|
if ($this->rownum > $this->limit) {
|
return false;
|
}
|
}
|
if ($this->offset) {
|
while ($this->offset_count < $this->offset) {
|
++$this->offset_count;
|
if (!is_array(@ibase_fetch_row($this->result))) {
|
$this->offset_count = $this->offset;
|
return false;
|
}
|
}
|
}
|
return true;
|
}
|
|
// }}}
|
// {{{ 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, $rownum = null)
|
{
|
if ($this->result === true) {
|
//query successfully executed, but without results...
|
$null = null;
|
return $null;
|
}
|
if (!$this->_skipLimitOffset()) {
|
$null = null;
|
return $null;
|
}
|
if (!is_null($rownum)) {
|
$seek = $this->seek($rownum);
|
if (PEAR::isError($seek)) {
|
return $seek;
|
}
|
}
|
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
|
$fetchmode = $this->db->fetchmode;
|
}
|
if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
|
$row = @ibase_fetch_assoc($this->result);
|
if (is_array($row)
|
&& $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
) {
|
$row = array_change_key_case($row, $this->db->options['field_case']);
|
}
|
} else {
|
$row = @ibase_fetch_row($this->result);
|
}
|
if (!$row) {
|
if (is_null($this->result)) {
|
$err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'fetchRow: resultset has already been freed');
|
return $err;
|
}
|
$null = null;
|
return $null;
|
}
|
if (($mode = ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM)
|
+ ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL))
|
) {
|
$this->db->_fixResultArrayValues($row, $mode);
|
}
|
if (!empty($this->values)) {
|
$this->_assignBindColumns($row);
|
}
|
if (!empty($this->types)) {
|
$row = $this->db->datatype->convertResultRow($this->types, $row);
|
}
|
if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
|
$object_class = $this->db->options['fetch_class'];
|
if ($object_class == 'stdClass') {
|
$row = (object) $row;
|
} else {
|
$row = &new $object_class($row);
|
}
|
}
|
++$this->rownum;
|
return $row;
|
}
|
|
// }}}
|
// {{{ _getColumnNames()
|
|
/**
|
* Retrieve the names of columns returned by the DBMS in a query result.
|
*
|
* @return mixed associative array variable
|
* that holds the names of columns. The indexes of the array are
|
* the column names mapped to lower case and the values are the
|
* respective numbers of the columns starting from 0. Some DBMS may
|
* not return any columns when the result set does not contain any
|
* rows.
|
* @access private
|
*/
|
function _getColumnNames()
|
{
|
$columns = array();
|
$numcols = $this->numCols();
|
if (PEAR::isError($numcols)) {
|
return $numcols;
|
}
|
for ($column = 0; $column < $numcols; $column++) {
|
$column_info = @ibase_field_info($this->result, $column);
|
$columns[$column_info['alias']] = $column;
|
}
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
$columns = array_change_key_case($columns, $this->db->options['field_case']);
|
}
|
return $columns;
|
}
|
|
// }}}
|
// {{{ numCols()
|
|
/**
|
* Count the number of columns returned by the DBMS in a query result.
|
*
|
* @return mixed integer value with the number of columns, a MDB2 error
|
* on failure
|
* @access public
|
*/
|
function numCols()
|
{
|
if ($this->result === true) {
|
//query successfully executed, but without results...
|
return 0;
|
}
|
|
if (!is_resource($this->result)) {
|
return $this->db->raiseError('numCols(): not a valid ibase resource');
|
}
|
$cols = @ibase_num_fields($this->result);
|
if (is_null($cols)) {
|
if (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'numCols: resultset has already been freed');
|
}
|
return $this->db->raiseError();
|
}
|
return $cols;
|
}
|
|
// }}}
|
// {{{ free()
|
|
/**
|
* Free the internal resources associated with $result.
|
*
|
* @return boolean true on success, false if $result is invalid
|
* @access public
|
*/
|
function free()
|
{
|
if (is_resource($this->result)) {
|
$free = @ibase_free_result($this->result);
|
if (!$free) {
|
if (is_null($this->result)) {
|
return MDB2_OK;
|
}
|
return $this->db->raiseError();
|
}
|
}
|
$this->result = null;
|
return MDB2_OK;
|
}
|
|
// }}}
|
}
|
|
class MDB2_BufferedResult_ibase extends MDB2_Result_ibase
|
{
|
// {{{ class vars
|
|
var $buffer;
|
var $buffer_rownum = - 1;
|
|
// }}}
|
// {{{ _fillBuffer()
|
|
/**
|
* Fill the row buffer
|
*
|
* @param int $rownum row number upto which the buffer should be filled
|
* if the row number is null all rows are ready into the buffer
|
* @return boolean true on success, false on failure
|
* @access protected
|
*/
|
function _fillBuffer($rownum = null)
|
{
|
if (isset($this->buffer) && is_array($this->buffer)) {
|
if (is_null($rownum)) {
|
if (!end($this->buffer)) {
|
return false;
|
}
|
} elseif (isset($this->buffer[$rownum])) {
|
return (bool) $this->buffer[$rownum];
|
}
|
}
|
|
if (!$this->_skipLimitOffset()) {
|
return false;
|
}
|
|
$buffer = true;
|
while ((is_null($rownum) || $this->buffer_rownum < $rownum)
|
&& (!$this->limit || $this->buffer_rownum < $this->limit)
|
&& ($buffer = @ibase_fetch_row($this->result))
|
) {
|
++$this->buffer_rownum;
|
$this->buffer[$this->buffer_rownum] = $buffer;
|
}
|
|
if (!$buffer) {
|
++$this->buffer_rownum;
|
$this->buffer[$this->buffer_rownum] = false;
|
return false;
|
} elseif ($this->limit && $this->buffer_rownum >= $this->limit) {
|
++$this->buffer_rownum;
|
$this->buffer[$this->buffer_rownum] = false;
|
}
|
return true;
|
}
|
|
// }}}
|
// {{{ 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, $rownum = null)
|
{
|
if ($this->result === true) {
|
//query successfully executed, but without results...
|
$null = null;
|
return $null;
|
}
|
if (is_null($this->result)) {
|
$err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'fetchRow: resultset has already been freed');
|
return $err;
|
}
|
if (!is_null($rownum)) {
|
$seek = $this->seek($rownum);
|
if (PEAR::isError($seek)) {
|
return $seek;
|
}
|
}
|
$target_rownum = $this->rownum + 1;
|
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
|
$fetchmode = $this->db->fetchmode;
|
}
|
if (!$this->_fillBuffer($target_rownum)) {
|
$null = null;
|
return $null;
|
}
|
$row = $this->buffer[$target_rownum];
|
if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
|
$column_names = $this->getColumnNames();
|
foreach ($column_names as $name => $i) {
|
$column_names[$name] = $row[$i];
|
}
|
$row = $column_names;
|
}
|
if (($mode = ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM)
|
+ ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL))
|
) {
|
$this->db->_fixResultArrayValues($row, $mode);
|
}
|
if (!empty($this->values)) {
|
$this->_assignBindColumns($row);
|
}
|
if (!empty($this->types)) {
|
$row = $this->db->datatype->convertResultRow($this->types, $row);
|
}
|
if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
|
$object_class = $this->db->options['fetch_class'];
|
if ($object_class == 'stdClass') {
|
$row = (object) $row;
|
} else {
|
$row = &new $object_class($row);
|
}
|
}
|
++$this->rownum;
|
return $row;
|
}
|
|
// }}}
|
// {{{ 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 (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'seek: resultset has already been freed');
|
}
|
$this->rownum = $rownum - 1;
|
return MDB2_OK;
|
}
|
|
// }}}
|
// {{{ valid()
|
|
/**
|
* check if the end of the result set has been reached
|
*
|
* @return mixed true or false on sucess, a MDB2 error on failure
|
* @access public
|
*/
|
function valid()
|
{
|
if (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'valid: resultset has already been freed');
|
}
|
if ($this->_fillBuffer($this->rownum + 1)) {
|
return true;
|
}
|
return false;
|
}
|
|
// }}}
|
// {{{ numRows()
|
|
/**
|
* returns the number of rows in a result object
|
*
|
* @return mixed MDB2 Error Object or the number of rows
|
* @access public
|
*/
|
function numRows()
|
{
|
if (is_null($this->result)) {
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
'seek: resultset has already been freed');
|
}
|
$this->_fillBuffer();
|
return $this->buffer_rownum;
|
}
|
|
// }}}
|
// {{{ free()
|
|
/**
|
* Free the internal resources associated with $result.
|
*
|
* @return boolean true on success, false if $result is invalid
|
* @access public
|
*/
|
function free()
|
{
|
$this->buffer = null;
|
$this->buffer_rownum = null;
|
$free = parent::free();
|
}
|
|
// }}}
|
}
|
|
class MDB2_Statement_ibase extends MDB2_Statement_Common
|
{
|
// {{{ _execute()
|
|
/**
|
* Execute a prepared query statement helper method.
|
*
|
* @param mixed $result_class string which specifies which result class to use
|
* @param mixed $result_wrap_class string which specifies which class to wrap results in
|
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
|
* @access private
|
*/
|
function &_execute($result_class = true, $result_wrap_class = false)
|
{
|
$isManip = MDB2::isManip($this->query);
|
$this->db->last_query = $this->query;
|
$this->db->debug($this->query, 'execute');
|
if ($this->db->getOption('disable_query')) {
|
if ($isManip) {
|
$return = 0;
|
return $return;
|
}
|
$null = null;
|
return $null;
|
}
|
|
$connected = $this->db->connect();
|
if (PEAR::isError($connected)) {
|
return $connected;
|
}
|
$connection = $this->db->in_transaction
|
? $this->db->transaction_id : $this->db->connection;
|
|
$parameters = array(0 => $this->statement);
|
$i = 0;
|
foreach ($this->values as $parameter => $value) {
|
$type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
|
$parameters[] = $this->db->quote($value, $type, false);
|
++$i;
|
}
|
|
$result = call_user_func_array('ibase_execute', $parameters);
|
if ($result === false) {
|
$err =& $this->db->raiseError();
|
return $err;
|
}
|
|
if ($isManip) {
|
$affected_rows = (function_exists('ibase_affected_rows') ? ibase_affected_rows($connection) : 0);
|
return $affected_rows;
|
}
|
|
$result =& $this->db->_wrapResult($result, $this->types,
|
$result_class, $result_wrap_class, $this->row_limit, $this->row_offset);
|
return $result;
|
}
|
|
// }}}
|
|
// }}}
|
// {{{ free()
|
|
/**
|
* Release resources allocated for the specified prepared query.
|
*
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
* @access public
|
*/
|
function free()
|
{
|
if (!@ibase_free_query($this->statement)) {
|
return $this->db->raiseError();
|
}
|
return MDB2_OK;
|
}
|
}
|
?>
|
