/includes/pear/MDB2/Driver/ibase.php
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Possible License(s): GPL-3.0
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- <?php
- // vim: set et ts=4 sw=4 fdm=marker:
- // +----------------------------------------------------------------------+
- // | PHP versions 4 and 5 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, |
- // | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton |
- // | All rights reserved. |
- // +----------------------------------------------------------------------+
- // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
- // | API as well as database abstraction for PHP applications. |
- // | This LICENSE is in the BSD license style. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | |
- // | Redistributions in binary form must reproduce the above copyright |
- // | notice, this list of conditions and the following disclaimer in the |
- // | documentation and/or other materials provided with the distribution. |
- // | |
- // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
- // | Lukas Smith nor the names of his contributors may be used to endorse |
- // | or promote products derived from this software without specific prior|
- // | written permission. |
- // | |
- // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
- // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
- // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
- // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
- // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
- // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
- // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
- // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
- // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
- // | POSSIBILITY OF SUCH DAMAGE. |
- // +----------------------------------------------------------------------+
- // | Author: Lorenzo Alberton <l.alberton@quipo.it> |
- // +----------------------------------------------------------------------+
- //
- // $Id: ibase.php,v 1.224 2009/01/14 15:00:02 quipo Exp $
-
- /**
- * MDB2 FireBird/InterBase driver
- *
- * @package MDB2
- * @category Database
- * @author Lorenzo Alberton <l.alberton@quipo.it>
- */
- class MDB2_Driver_ibase extends MDB2_Driver_Common
- {
- // {{{ properties
-
- var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\');
-
- var $identifier_quoting = array('start' => '', 'end' => '', 'escape' => false);
-
- var $transaction_id = 0;
-
- var $query_parameters = array();
-
- var $query_parameter_values = array();
-
- // }}}
- // {{{ constructor
-
- /**
- * Constructor
- */
- function __construct()
- {
- parent::__construct();
-
- $this->phptype = 'ibase';
- $this->dbsyntax = 'ibase';
-
- $this->supported['sequences'] = true;
- $this->supported['indexes'] = true;
- $this->supported['affected_rows'] = function_exists('ibase_affected_rows');
- $this->supported['summary_functions'] = true;
- $this->supported['order_by_text'] = true;
- $this->supported['transactions'] = true;
- $this->supported['savepoints'] = true;
- $this->supported['current_id'] = true;
- $this->supported['limit_queries'] = 'emulated';
- $this->supported['LOBs'] = true;
- $this->supported['replace'] = false;
- $this->supported['sub_selects'] = true;
- $this->supported['triggers'] = true;
- $this->supported['auto_increment'] = true;
- $this->supported['primary_key'] = true;
- $this->supported['result_introspection'] = true;
- $this->supported['prepared_statements'] = true;
- $this->supported['identifier_quoting'] = false;
- $this->supported['pattern_escaping'] = true;
- $this->supported['new_link'] = false;
-
- $this->options['DBA_username'] = false;
- $this->options['DBA_password'] = false;
- $this->options['database_path'] = '';
- $this->options['database_extension'] = '.gdb';
- $this->options['server_version'] = '';
- $this->options['max_identifiers_length'] = 31;
- }
-
- // }}}
- // {{{ errorInfo()
-
- /**
- * This method is used to collect information about an error
- *
- * @param integer $error
- * @return array
- * @access public
- */
- function errorInfo($error = null)
- {
- $native_msg = @ibase_errmsg();
-
- if (function_exists('ibase_errcode')) {
- $native_code = @ibase_errcode();
- } else {
- // memo for the interbase php module hackers: we need something similar
- // to mysql_errno() to retrieve error codes instead of this ugly hack
- if (preg_match('/^([^0-9\-]+)([0-9\-]+)\s+(.*)$/', $native_msg, $m)) {
- $native_code = (int)$m[2];
- } else {
- $native_code = null;
- }
- }
- if (is_null($error)) {
- $error = MDB2_ERROR;
- if ($native_code) {
- // try to interpret Interbase error code (that's why we need ibase_errno()
- // in the interbase module to return the real error code)
- switch ($native_code) {
- case -204:
- if (isset($m[3]) && is_int(strpos($m[3], 'Table unknown'))) {
- $errno = MDB2_ERROR_NOSUCHTABLE;
- }
- break;
- default:
- static $ecode_map;
- if (empty($ecode_map)) {
- $ecode_map = array(
- -104 => MDB2_ERROR_SYNTAX,
- -150 => MDB2_ERROR_ACCESS_VIOLATION,
- -151 => MDB2_ERROR_ACCESS_VIOLATION,
- -155 => MDB2_ERROR_NOSUCHTABLE,
- -157 => MDB2_ERROR_NOSUCHFIELD,
- -158 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
- -170 => MDB2_ERROR_MISMATCH,
- -171 => MDB2_ERROR_MISMATCH,
- -172 => MDB2_ERROR_INVALID,
- // -204 => // Covers too many errors, need to use regex on msg
- -205 => MDB2_ERROR_NOSUCHFIELD,
- -206 => MDB2_ERROR_NOSUCHFIELD,
- -208 => MDB2_ERROR_INVALID,
- -219 => MDB2_ERROR_NOSUCHTABLE,
- -297 => MDB2_ERROR_CONSTRAINT,
- -303 => MDB2_ERROR_INVALID,
- -413 => MDB2_ERROR_INVALID_NUMBER,
- -530 => MDB2_ERROR_CONSTRAINT,
- -551 => MDB2_ERROR_ACCESS_VIOLATION,
- -552 => MDB2_ERROR_ACCESS_VIOLATION,
- // -607 => // Covers too many errors, need to use regex on msg
- -625 => MDB2_ERROR_CONSTRAINT_NOT_NULL,
- -803 => MDB2_ERROR_CONSTRAINT,
- -804 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
- // -902 => // Covers too many errors, need to use regex on msg
- -904 => MDB2_ERROR_CONNECT_FAILED,
- -922 => MDB2_ERROR_NOSUCHDB,
- -923 => MDB2_ERROR_CONNECT_FAILED,
- -924 => MDB2_ERROR_CONNECT_FAILED
- );
- }
- if (isset($ecode_map[$native_code])) {
- $error = $ecode_map[$native_code];
- }
- break;
- }
- } else {
- static $error_regexps;
- if (!isset($error_regexps)) {
- $error_regexps = array(
- '/generator .* is not defined/'
- => MDB2_ERROR_SYNTAX, // for compat. w ibase_errcode()
- '/table.*(not exist|not found|unknown)/i'
- => MDB2_ERROR_NOSUCHTABLE,
- '/table .* already exists/i'
- => MDB2_ERROR_ALREADY_EXISTS,
- '/unsuccessful metadata update .* failed attempt to store duplicate value/i'
- => MDB2_ERROR_ALREADY_EXISTS,
- '/unsuccessful metadata update .* not found/i'
- => MDB2_ERROR_NOT_FOUND,
- '/validation error for column .* value "\*\*\* null/i'
- => MDB2_ERROR_CONSTRAINT_NOT_NULL,
- '/violation of [\w ]+ constraint/i'
- => MDB2_ERROR_CONSTRAINT,
- '/conversion error from string/i'
- => MDB2_ERROR_INVALID_NUMBER,
- '/no permission for/i'
- => MDB2_ERROR_ACCESS_VIOLATION,
- '/arithmetic exception, numeric overflow, or string truncation/i'
- => MDB2_ERROR_INVALID,
- '/feature is not supported/i'
- => MDB2_ERROR_NOT_CAPABLE,
- );
- }
- foreach ($error_regexps as $regexp => $code) {
- if (preg_match($regexp, $native_msg, $m)) {
- $error = $code;
- break;
- }
- }
- }
- }
- return array($error, $native_code, $native_msg);
- }
-
- // }}}
- // {{{ quoteIdentifier()
-
- /**
- * Delimited identifiers are a nightmare with InterBase, so they're disabled
- *
- * @param string $str identifier name to be quoted
- * @param bool $check_option check the 'quote_identifier' option
- *
- * @return string quoted identifier string
- *
- * @access public
- */
- function quoteIdentifier($str, $check_option = false)
- {
- if ($check_option && !$this->options['quote_identifier']) {
- return $str;
- }
- return strtoupper($str);
- }
-
- // }}}
- // {{{ getConnection()
-
- /**
- * Returns a native connection
- *
- * @return mixed a valid MDB2 connection object,
- * or a MDB2 error object on error
- * @access public
- */
- function getConnection()
- {
- $result = $this->connect();
- if (PEAR::isError($result)) {
- return $result;
- }
- if ($this->in_transaction) {
- return $this->transaction_id;
- }
- return $this->connection;
- }
-
- // }}}
- // {{{ beginTransaction()
-
- /**
- * Start a transaction or set a savepoint.
- *
- * @param string name of a savepoint to set
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function beginTransaction($savepoint = null)
- {
- $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- if (!is_null($savepoint)) {
- if (!$this->in_transaction) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'savepoint cannot be released when changes are auto committed', __FUNCTION__);
- }
- $query = 'SAVEPOINT '.$savepoint;
- return $this->_doQuery($query, true);
- } elseif ($this->in_transaction) {
- return MDB2_OK; //nothing to do
- }
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- $result = @ibase_trans(IBASE_DEFAULT, $connection);
- if (!$result) {
- return $this->raiseError(null, null, null,
- 'could not start a transaction', __FUNCTION__);
- }
- $this->transaction_id = $result;
- $this->in_transaction = true;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ commit()
-
- /**
- * Commit the database changes done during a transaction that is in
- * progress or release a savepoint. This function may only be called when
- * auto-committing is disabled, otherwise it will fail. Therefore, a new
- * transaction is implicitly started after committing the pending changes.
- *
- * @param string name of a savepoint to release
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function commit($savepoint = null)
- {
- $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- if (!$this->in_transaction) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
- }
- if (!is_null($savepoint)) {
- $query = 'RELEASE SAVEPOINT '.$savepoint;
- return $this->_doQuery($query, true);
- }
-
- if (!@ibase_commit($this->transaction_id)) {
- return $this->raiseError(null, null, null,
- 'could not commit a transaction', __FUNCTION__);
- }
- $this->in_transaction = false;
- $this->transaction_id = 0;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ rollback()
-
- /**
- * Cancel any database changes done during a transaction or since a specific
- * savepoint that is in progress. This function may only be called when
- * auto-committing is disabled, otherwise it will fail. Therefore, a new
- * transaction is implicitly started after canceling the pending changes.
- *
- * @param string name of a savepoint to rollback to
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- */
- function rollback($savepoint = null)
- {
- $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
- if (!$this->in_transaction) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'rollback cannot be done changes are auto committed', __FUNCTION__);
- }
- if (!is_null($savepoint)) {
- $query = 'ROLLBACK TO SAVEPOINT '.$savepoint;
- return $this->_doQuery($query, true);
- }
-
- if ($this->transaction_id && !@ibase_rollback($this->transaction_id)) {
- return $this->raiseError(null, null, null,
- 'Could not rollback a pending transaction: '.@ibase_errmsg(), __FUNCTION__);
- }
- $this->in_transaction = false;
- $this->transaction_id = 0;
- return MDB2_OK;
- }
-
- // }}}
- // {{{ setTransactionIsolation()
-
- /**
- * Set the transacton isolation level.
- *
- * @param string standard isolation level (SQL-92)
- * READ UNCOMMITTED (allows dirty reads)
- * READ COMMITTED (prevents dirty reads)
- * REPEATABLE READ (prevents nonrepeatable reads)
- * SERIALIZABLE (prevents phantom reads)
- * @param array some transaction options:
- * 'wait' => 'WAIT' | 'NO WAIT'
- * 'rw' => 'READ WRITE' | 'READ ONLY'
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- *
- * @access public
- * @since 2.1.1
- */
- function setTransactionIsolation($isolation, $options = array())
- {
- $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
- switch ($isolation) {
- case 'READ UNCOMMITTED':
- $ibase_isolation = 'READ COMMITTED RECORD_VERSION';
- break;
- case 'READ COMMITTED':
- $ibase_isolation = 'READ COMMITTED NO RECORD_VERSION';
- break;
- case 'REPEATABLE READ':
- $ibase_isolation = 'SNAPSHOT';
- break;
- case 'SERIALIZABLE':
- $ibase_isolation = 'SNAPSHOT TABLE STABILITY';
- break;
- default:
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'isolation level is not supported: '.$isolation, __FUNCTION__);
- }
-
- if (!empty($options['wait'])) {
- switch ($options['wait']) {
- case 'WAIT':
- case 'NO WAIT':
- $wait = $options['wait'];
- break;
- default:
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'wait option is not supported: '.$options['wait'], __FUNCTION__);
- }
- }
-
- if (!empty($options['rw'])) {
- switch ($options['rw']) {
- case 'READ ONLY':
- case 'READ WRITE':
- $rw = $options['wait'];
- break;
- default:
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'wait option is not supported: '.$options['rw'], __FUNCTION__);
- }
- }
-
- $query = "SET TRANSACTION $rw $wait ISOLATION LEVEL $ibase_isolation";
- return $this->_doQuery($query, true);
- }
-
- // }}}
- // {{{ getDatabaseFile($database_name)
-
- /**
- * Builds the string with path+dbname+extension
- *
- * @return string full database path+file
- * @access protected
- */
- function _getDatabaseFile($database_name)
- {
- if ($database_name == '') {
- return $database_name;
- }
- $ret = $this->options['database_path'] . $database_name;
- if (!preg_match('/\.[fg]db$/i', $database_name)) {
- $ret .= $this->options['database_extension'];
- }
- return $ret;
- }
-
- // }}}
- // {{{ _doConnect()
-
- /**
- * Does the grunt work of connecting to the database
- *
- * @return mixed connection resource on success, MDB2 Error Object on failure
- * @access protected
- */
- function _doConnect($username, $password, $database_name, $persistent = false)
- {
- if (!PEAR::loadExtension('interbase')) {
- return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
- 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
- }
-
- $database_file = $this->_getDatabaseFile($database_name);
- $dbhost = $this->dsn['hostspec'] ?
- ($this->dsn['hostspec'].':'.$database_file) : $database_file;
-
- $params = array();
- $params[] = $dbhost;
- $params[] = !empty($username) ? $username : null;
- $params[] = !empty($password) ? $password : null;
- $params[] = isset($this->dsn['charset']) ? $this->dsn['charset'] : null;
- $params[] = isset($this->dsn['buffers']) ? $this->dsn['buffers'] : null;
- $params[] = isset($this->dsn['dialect']) ? $this->dsn['dialect'] : null;
- $params[] = isset($this->dsn['role']) ? $this->dsn['role'] : null;
-
- $connect_function = $persistent ? 'ibase_pconnect' : 'ibase_connect';
- $connection = @call_user_func_array($connect_function, $params);
- if ($connection <= 0) {
- return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
- 'unable to establish a connection', __FUNCTION__);
- }
-
- if (empty($this->dsn['disable_iso_date'])) {
- if (function_exists('ibase_timefmt')) {
- @ibase_timefmt("%Y-%m-%d %H:%M:%S", IBASE_TIMESTAMP);
- @ibase_timefmt("%Y-%m-%d", IBASE_DATE);
- } else {
- @ini_set("ibase.timestampformat", "%Y-%m-%d %H:%M:%S");
- //@ini_set("ibase.timeformat", "%H:%M:%S");
- @ini_set("ibase.dateformat", "%Y-%m-%d");
- }
- }
-
- return $connection;
- }
-
- // }}}
- // {{{ connect()
-
- /**
- * Connect to the database
- *
- * @return true on success, MDB2 Error Object on failure
- * @access public
- */
- function connect()
- {
- $database_file = $this->_getDatabaseFile($this->database_name);
- if (is_resource($this->connection)) {
- //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
- if (MDB2::areEquals($this->connected_dsn, $this->dsn)
- && $this->connected_database_name == $database_file
- && $this->opened_persistent == $this->options['persistent']
- ) {
- return MDB2_OK;
- }
- $this->disconnect(false);
- }
-
- if (empty($this->database_name)) {
- return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
- 'unable to establish a connection', __FUNCTION__);
- }
-
- $connection = $this->_doConnect($this->dsn['username'],
- $this->dsn['password'],
- $this->database_name,
- $this->options['persistent']);
- if (PEAR::isError($connection)) {
- return $connection;
- }
- $this->connection =& $connection;
- $this->connected_dsn = $this->dsn;
- $this->connected_database_name = $database_file;
- $this->opened_persistent = $this->options['persistent'];
- $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
- $this->supported['limit_queries'] = ($this->dbsyntax == 'firebird') ? true : 'emulated';
-
- 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) {
- $ok = @ibase_close($this->connection);
- if (!$ok) {
- return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED,
- null, null, null, __FUNCTION__);
- }
- }
- } else {
- return false;
- }
- return parent::disconnect($force);
- }
-
- // }}}
- // {{{ standaloneQuery()
-
- /**
- * execute a query as DBA
- *
- * @param string $query the SQL query
- * @param mixed $types array that contains the types of the columns in
- * the result set
- * @param boolean $is_manip if the query is a manipulation query
- * @return mixed MDB2_OK on success, a MDB2 error on failure
- * @access public
- */
- function &standaloneQuery($query, $types = null, $is_manip = false)
- {
- $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username'];
- $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password'];
- $connection = $this->_doConnect($user, $pass, $this->database_name, $this->options['persistent']);
- if (PEAR::isError($connection)) {
- return $connection;
- }
-
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
-
- $result =& $this->_doQuery($query, $is_manip, $connection);
- if (!PEAR::isError($result)) {
- $result = $this->_affectedRows($connection, $result);
- }
-
- @mysql_close($connection);
- return $result;
- }
-
- // }}}
- // {{{ _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 (PEAR::isError($result)) {
- return $result;
- }
- $query = $result;
- }
- if ($this->getOption('disable_query')) {
- if ($is_manip) {
- return 0;
- }
- return null;
- }
-
- if (is_null($connection)) {
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- }
- $result = @ibase_query($connection, $query);
-
- if ($result === false) {
- $err =& $this->raiseError(null, 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, $result = null)
- {
- if (is_null($connection)) {
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- }
- return (function_exists('ibase_affected_rows') ? @ibase_affected_rows($connection) : 0);
- }
-
- // }}}
- // {{{ _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, $offset)
- {
- if ($limit > 0 && $this->supports('limit_queries') === true) {
- $query = preg_replace('/^([\s(])*SELECT(?!\s*FIRST\s*\d+)/i',
- "SELECT FIRST $limit SKIP $offset", $query);
- }
- 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'];
- } else {
- $username = $this->options['DBA_username'] ? $this->options['DBA_username'] : $this->dsn['username'];
- $password = $this->options['DBA_password'] ? $this->options['DBA_password'] : $this->dsn['password'];
- $ibserv = @ibase_service_attach($this->dsn['hostspec'], $username, $password);
- $server_info = @ibase_server_info($ibserv, IBASE_SVC_SERVER_VERSION);
- @ibase_service_detach($ibserv);
- }
- if (!$server_info) {
- return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
- 'Requires either "server_version" or "DBA_username"/"DBA_password" option', __FUNCTION__);
- }
- // cache server_info
- $this->connected_server_info = $server_info;
- if (!$native) {
- //WI-V1.5.3.4854 Firebird 1.5
- //WI-T2.1.0.16780 Firebird 2.1 Beta 2
- if (!preg_match('/-[VT]([\d\.]*)/', $server_info, $matches)) {
- return $this->raiseError(MDB2_ERROR_INVALID, null, null,
- 'Could not parse version information:'.$server_info, __FUNCTION__);
- }
- $tmp = explode('.', $matches[1], 4);
- $server_info = array(
- 'major' => isset($tmp[0]) ? $tmp[0] : null,
- 'minor' => isset($tmp[1]) ? $tmp[1] : null,
- 'patch' => isset($tmp[2]) ? $tmp[2] : null,
- 'extra' => isset($tmp[3]) ? $tmp[3] : null,
- 'native' => $server_info,
- );
- }
- return $server_info;
- }
-
- // }}}
- // {{{ prepare()
-
- /**
- * Prepares a query for multiple execution with execute().
- * With some database backends, this is emulated.
- * prepare() requires a generic query as string like
- * 'INSERT INTO numbers VALUES(?,?)' or
- * 'INSERT INTO numbers VALUES(:foo,:bar)'.
- * The ? and :name and are placeholders which can be set using
- * bindParam() and the query can be sent off using the execute() method.
- * The allowed format for :name can be set with the 'bindname_format' option.
- *
- * @param string $query the query to prepare
- * @param mixed $types array that contains the types of the placeholders
- * @param mixed $result_types array that contains the types of the columns in
- * the result set or MDB2_PREPARE_RESULT, if set to
- * MDB2_PREPARE_MANIP the query is handled as a manipulation query
- * @param mixed $lobs key (field) value (parameter) pair for all lob placeholders
- * @return mixed resource handle for the prepared query on success, a MDB2
- * error on failure
- * @access public
- * @see bindParam, execute
- */
- function &prepare($query, $types = null, $result_types = null, $lobs = array())
- {
- if ($this->options['emulate_prepared']) {
- $obj =& parent::prepare($query, $types, $result_types, $lobs);
- return $obj;
- }
- $is_manip = ($result_types === MDB2_PREPARE_MANIP);
- $offset = $this->offset;
- $limit = $this->limit;
- $this->offset = $this->limit = 0;
- $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
- if ($result) {
- if (PEAR::isError($result)) {
- return $result;
- }
- $query = $result;
- }
- $placeholder_type_guess = $placeholder_type = null;
- $question = '?';
- $colon = ':';
- $positions = array();
- $position = 0;
- while ($position < strlen($query)) {
- $q_position = strpos($query, $question, $position);
- $c_position = strpos($query, $colon, $position);
- if ($q_position && $c_position) {
- $p_position = min($q_position, $c_position);
- } elseif ($q_position) {
- $p_position = $q_position;
- } elseif ($c_position) {
- $p_position = $c_position;
- } else {
- break;
- }
- if (is_null($placeholder_type)) {
- $placeholder_type_guess = $query[$p_position];
- }
-
- $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position);
- if (PEAR::isError($new_pos)) {
- return $new_pos;
- }
- if ($new_pos != $position) {
- $position = $new_pos;
- continue; //evaluate again starting from the new position
- }
-
- if ($query[$position] == $placeholder_type_guess) {
- if (is_null($placeholder_type)) {
- $placeholder_type = $query[$p_position];
- $question = $colon = $placeholder_type;
- }
- if ($placeholder_type == ':') {
- $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
- $parameter = preg_replace($regexp, '\\1', $query);
- if ($parameter === '') {
- $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
- 'named parameter name must match "bindname_format" option', __FUNCTION__);
- return $err;
- }
- $positions[] = $parameter;
- $query = substr_replace($query, '?', $position, strlen($parameter)+1);
- } else {
- $positions[] = count($positions);
- }
- $position = $p_position + 1;
- } else {
- $position = $p_position;
- }
- }
- $connection = $this->getConnection();
- if (PEAR::isError($connection)) {
- return $connection;
- }
- $statement = @ibase_prepare($connection, $query);
- if (!$statement) {
- $err =& $this->raiseError(null, null, null,
- 'Could not create statement', __FUNCTION__);
- return $err;
- }
-
- $class_name = 'MDB2_Statement_'.$this->phptype;
- $obj = new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
- $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
- return $obj;
- }
-
- // }}}
- // {{{ getSequenceName()
-
- /**
- * adds sequence name formatting to a sequence name
- *
- * @param string $sqn name of the sequence
- * @return string formatted sequence name
- * @access public
- */
- function getSequenceName($sqn)
- {
- return strtoupper(parent::getSequenceName($sqn));
- }
-
- // }}}
- // {{{ 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 = $this->getSequenceName($seq_name);
- $query = 'SELECT GEN_ID('.$sequence_name.', 1) as the_value FROM RDB$DATABASE';
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $this->expectError('*');
- $result = $this->queryOne($query, 'integer');
- $this->popExpect();
- $this->popErrorHandling();
- if (PEAR::isError($result)) {
- if ($ondemand) {
- $this->loadModule('Manager', null, true);
- $result = $this->manager->createSequence($seq_name);
- if (PEAR::isError($result)) {
- return $this->raiseError($result, null, null,
- 'on demand sequence could not be created', __FUNCTION__);
- } else {
- return $this->nextID($seq_name, false);
- }
- }
- }
- return $result;
- }
-
- // }}}
- // {{{ 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)
- {
- $seq = $table.(empty($field) ? '' : '_'.$field);
- return $this->currID($seq);
- }
-
- // }}}
- // {{{ 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);
- $query = 'SELECT GEN_ID('.$sequence_name.', 0) as the_value FROM RDB$DATABASE';
- $value = $this->queryOne($query);
- if (PEAR::isError($value)) {
- return $this->raiseError($value, null, null,
- 'Unable to select from ' . $seq_name, __FUNCTION__);
- }
- if (!is_numeric($value)) {
- return $this->raiseError(MDB2_ERROR, null, null,
- 'could not find value in sequence table', __FUNCTION__);
- }
- return $value;
- }
-
- // }}}
- }
-
- /**
- * MDB2 FireBird/InterBase result driver
- *
- * @package MDB2
- * @category Database
- * @author Lorenzo Alberton <l.alberton@quipo.it>
- */
- 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->supports('limit_queries') === true) {
- 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 (!$row) {
- if ($this->result === false) {
- $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- return $err;
- }
- $null = null;
- 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, $mode);
- }
- if (!empty($this->types)) {
- $row = $this->db->datatype->convertResultRow($this->types, $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 {
- $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 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 = $this->numCols();
- if (PEAR::isError($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(MDB2_ERROR_NOT_FOUND, null, null,
- 'numCols(): not a valid ibase resource', __FUNCTION__);
- }
- $cols = @ibase_num_fields($this->result);
- if (is_null($cols)) {
- if ($this->result === false) {
- return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- } elseif (is_null($this->result)) {
- return count($this->types);
- }
- return $this->db->raiseError(null, null, null,
- 'Could not get column count', __FUNCTION__);
- }
- 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) && $this->db->connection) {
- $free = @ibase_free_result($this->result);
- if ($free === false) {
- return $this->db->raiseError(null, null, null,
- 'Could not free result', __FUNCTION__);
- }
- }
- $this->result = false;
- return MDB2_OK;
- }
-
- // }}}
- }
-
- /**
- * MDB2 FireBird/InterBase buffered result driver
- *
- * @package MDB2
- * @category Database
- * @author Lorenzo Alberton <l.alberton@quipo.it>
- */
- 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 || is_null($this->result)) {
- //query successfully executed, but without results...
- $null = null;
- return $null;
- }
- if ($this->result === false) {
- $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
- 'resultset has already been freed', __FUNCTION__);
- 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];
- …
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