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+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
+// | Stig. S. Bakken, Lukas Smith |
+// | 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> |
+// +----------------------------------------------------------------------+
+//
+// $Id$
+
+/**
+ * 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 $escape_quotes = "'";
+
+ 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['current_id'] = true;
+ // maybe this needs different handling for ibase and firebird?
+ $this->supported['limit_queries'] = 'emulated';
+ $this->supported['LOBs'] = true;
+ $this->supported['replace'] = false;
+ $this->supported['sub_selects'] = true;
+ $this->supported['auto_increment'] = true;
+ $this->supported['primary_key'] = true;
+
+ $this->options['database_path'] = '';
+ $this->options['database_extension'] = '.gdb';
+ $this->options['default_text_field_length'] = 4096;
+ }
+
+ // }}}
+ // {{{ 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)) {
+ $ecode_map = array(
+ -104 => MDB2_ERROR_SYNTAX,
+ -150 => MDB2_ERROR_ACCESS_VIOLATION,
+ -151 => MDB2_ERROR_ACCESS_VIOLATION,
+ -155 => MDB2_ERROR_NOSUCHTABLE,
+ -157 => MDB2_ERROR_NOSUCHFIELD,
+ -158 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+ -170 => MDB2_ERROR_MISMATCH,
+ -171 => MDB2_ERROR_MISMATCH,
+ -172 => MDB2_ERROR_INVALID,
+ // -204 => // Covers too many errors, need to use regex on msg
+ -205 => MDB2_ERROR_NOSUCHFIELD,
+ -206 => MDB2_ERROR_NOSUCHFIELD,
+ -208 => MDB2_ERROR_INVALID,
+ -219 => MDB2_ERROR_NOSUCHTABLE,
+ -297 => MDB2_ERROR_CONSTRAINT,
+ -303 => MDB2_ERROR_INVALID,
+ -413 => MDB2_ERROR_INVALID_NUMBER,
+ -530 => MDB2_ERROR_CONSTRAINT,
+ -551 => MDB2_ERROR_ACCESS_VIOLATION,
+ -552 => MDB2_ERROR_ACCESS_VIOLATION,
+ // -607 => // Covers too many errors, need to use regex on msg
+ -625 => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+ -803 => MDB2_ERROR_CONSTRAINT,
+ -804 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+ -904 => MDB2_ERROR_CONNECT_FAILED,
+ -922 => MDB2_ERROR_NOSUCHDB,
+ -923 => MDB2_ERROR_CONNECT_FAILED,
+ -924 => MDB2_ERROR_CONNECT_FAILED
+ );
+ }
+ if (isset($ecode_map[$native_code])) {
+ $error = $ecode_map[$native_code];
+ }
+ break;
+ }
+ } else {
+ static $error_regexps;
+ if (!isset($error_regexps)) {
+ $error_regexps = array(
+ '/generator .* is not defined/'
+ => MDB2_ERROR_SYNTAX, // for compat. w ibase_errcode()
+ '/table.*(not exist|not found|unknown)/i'
+ => MDB2_ERROR_NOSUCHTABLE,
+ '/table .* already exists/i'
+ => MDB2_ERROR_ALREADY_EXISTS,
+ '/unsuccessful metadata update .* failed attempt to store duplicate value/i'
+ => MDB2_ERROR_ALREADY_EXISTS,
+ '/unsuccessful metadata update .* not found/i'
+ => MDB2_ERROR_NOT_FOUND,
+ '/validation error for column .* value "\*\*\* null/i'
+ => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+ '/violation of [\w ]+ constraint/i'
+ => MDB2_ERROR_CONSTRAINT,
+ '/conversion error from string/i'
+ => MDB2_ERROR_INVALID_NUMBER,
+ '/no permission for/i'
+ => MDB2_ERROR_ACCESS_VIOLATION,
+ '/arithmetic exception, numeric overflow, or string truncation/i'
+ => MDB2_ERROR_INVALID,
+ );
+ }
+ foreach ($error_regexps as $regexp => $code) {
+ if (preg_match($regexp, $native_msg, $m)) {
+ $error = $code;
+ break;
+ }
+ }
+ }
+ }
+ return array($error, $native_code, $native_msg);
+ }
+
+ // }}}
+ // {{{ beginTransaction()
+
+ /**
+ * Start a transaction.
+ *
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function beginTransaction()
+ {
+ $this->debug('starting transaction', 'beginTransaction');
+ if ($this->in_transaction) {
+ return MDB2_OK; //nothing to do
+ }
+ if (!$this->destructor_registered && $this->opened_persistent) {
+ $this->destructor_registered = true;
+ register_shutdown_function('MDB2_closeOpenTransactions');
+ }
+ $result = ibase_trans();
+ if (!$result) {
+ return $this->raiseError(MDB2_ERROR, null, null,
+ 'beginTransaction: could not start a transaction');
+ }
+ $this->transaction_id = $result;
+ $this->in_transaction = true;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ commit()
+
+ /**
+ * Commit the database changes done during a transaction that is in
+ * progress.
+ *
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function commit()
+ {
+ $this->debug('commit transaction', 'commit');
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR, null, null,
+ 'commit: transaction changes are being auto committed');
+ }
+ if (!ibase_commit($this->transaction_id)) {
+ return $this->raiseError(MDB2_ERROR, null, null,
+ 'commit: could not commit a transaction');
+ }
+ $this->in_transaction = false;
+ //$this->transaction_id = 0;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ rollback()
+
+ /**
+ * Cancel any database changes done during a transaction that is in
+ * progress.
+ *
+ * @return mixed MDB2_OK on success, a MDB2 error on failure
+ * @access public
+ */
+ function rollback()
+ {
+ $this->debug('rolling back transaction', 'rollback');
+ if (!$this->in_transaction) {
+ return $this->raiseError(MDB2_ERROR, null, null,
+ 'rollback: transactions can not be rolled back when changes are auto committed');
+ }
+ if ($this->transaction_id && !ibase_rollback($this->transaction_id)) {
+ return $this->raiseError(MDB2_ERROR, null, null,
+ 'rollback: Could not rollback a pending transaction: '.ibase_errmsg());
+ }
+ $this->in_transaction = false;
+ $this->transaction_id = 0;
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ getDatabaseFile()
+
+ /**
+ * Builds the string with path+dbname+extension
+ *
+ * @return string full database path+file
+ * @access protected
+ */
+ function _getDatabaseFile($database_name)
+ {
+ if ($database_name == '') {
+ return $database_name;
+ }
+ return $this->options['database_path'].$database_name.$this->options['database_extension'];
+ }
+
+ // }}}
+ // {{{ _doConnect()
+
+ /**
+ * Does the grunt work of connecting to the database
+ *
+ * @return mixed connection resource on success, MDB2 Error Object on failure
+ * @access protected
+ */
+ function _doConnect($database_name, $persistent = false)
+ {
+ $user = $this->dsn['username'];
+ $pw = $this->dsn['password'];
+ $dbhost = $this->dsn['hostspec'] ?
+ ($this->dsn['hostspec'].':'.$database_name) : $database_name;
+
+ $params = array();
+ $params[] = $dbhost;
+ $params[] = !empty($user) ? $user : null;
+ $params[] = !empty($pw) ? $pw : 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);
+ }
+ 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
+ && $this->connected_database_name == $database_file
+ && $this->opened_persistent == $this->options['persistent']
+ ) {
+ return MDB2_OK;
+ }
+ $this->disconnect(false);
+ }
+
+ if (!PEAR::loadExtension('interbase')) {
+ return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+ 'connect: extension '.$this->phptype.' is not compiled into PHP');
+ }
+
+ if (!empty($this->database_name)) {
+ $connection = $this->_doConnect($database_file, $this->options['persistent']);
+ if (PEAR::isError($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'] : $this->phptype;
+ }
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ disconnect()
+
+ /**
+ * Log out and disconnect from the database.
+ *
+ * @return mixed true on success, false if not connected and error
+ * object on error
+ * @access public
+ */
+ function disconnect($force = true)
+ {
+ if (is_resource($this->connection)) {
+ if (!$this->opened_persistent || $force) {
+ @ibase_close($this->connection);
+ }
+ $this->connection = 0;
+ }
+ return MDB2_OK;
+ }
+
+ // }}}
+ // {{{ _doQuery()
+
+ /**
+ * Execute a query
+ * @param string $query query
+ * @param boolean $isManip if the query is a manipulation query
+ * @param resource $connection
+ * @param string $database_name
+ * @return result or error object
+ * @access protected
+ */
+ function _doQuery($query, $isManip = false, $connection = null, $database_name = null)
+ {
+ $this->last_query = $query;
+ $this->debug($query, 'query');
+ if ($this->getOption('disable_query')) {
+ if ($isManip) {
+ return 0;
+ }
+ return null;
+ }
+
+ if (is_null($connection)) {
+ if ($this->in_transaction) {
+ $connection = $this->transaction_id;
+ } else {
+ $err = $this->connect();
+ if (PEAR::isError($err)) {
+ return $err;
+ }
+ $connection = $this->connection;
+ }
+ }
+ $result = ibase_query($connection, $query);
+
+ if ($result === false) {
+ return $this->raiseError();
+ }
+
+ if ($isManip) {
+ //return $result;
+ return (function_exists('ibase_affected_rows') ? ibase_affected_rows($connection) : 0);
+ }
+ return $result;
+ }
+
+ // }}}
+ // {{{ _modifyQuery()
+
+ /**
+ * Changes a query string for various DBMS specific reasons
+ *
+ * @param string $query query to modify
+ * @return the new (modified) query
+ * @access protected
+ */
+ function _modifyQuery($query, $isManip, $limit, $offset)
+ {
+ if ($limit > 0 && $this->dsn['dbsyntax'] == 'firebird') {
+ $query = preg_replace('/^([\s(])*SELECT(?!\s*FIRST\s*\d+)/i',
+ "SELECT FIRST $limit SKIP $offset", $query);
+ }
+ return $query;
+ }
+
+ // }}}
+ // {{{ 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 :[a-zA-Z] and are placeholders which can be set using
+ * bindParam() and the query can be send off using the execute() method.
+ *
+ * @param string $query the query to prepare
+ * @param mixed $types array that contains the types of the placeholders
+ * @param mixed $result_types array that contains the types of the columns in
+ * the result set
+ * @return mixed resource handle for the prepared query on success, a MDB2
+ * error on failure
+ * @access public
+ * @see bindParam, execute
+ */
+ function &prepare($query, $types = null, $result_types = null)
+ {
+ $this->debug($query, 'prepare');
+ $placeholder_type_guess = $placeholder_type = null;
+ $question = '?';
+ $colon = ':';
+ $position = 0;
+ while ($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];
+ }
+ if (is_int($quote = strpos($query, "'", $position)) && $quote < $p_position) {
+ if (!is_int($end_quote = strpos($query, "'", $quote + 1))) {
+ $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+ 'prepare: query with an unterminated text string specified');
+ return $err;
+ }
+ switch ($this->escape_quotes) {
+ case '':
+ case "'":
+ $position = $end_quote + 1;
+ break;
+ default:
+ if ($end_quote == $quote + 1) {
+ $position = $end_quote + 1;
+ } else {
+ if ($query[$end_quote-1] == $this->escape_quotes) {
+ $position = $end_quote;
+ } else {
+ $position = $end_quote + 1;
+ }
+ }
+ break;
+ }
+ } elseif ($query[$position] == $placeholder_type_guess) {
+ if ($placeholder_type_guess == '?') {
+ break;
+ }
+ if (is_null($placeholder_type)) {
+ $placeholder_type = $query[$p_position];
+ $question = $colon = $placeholder_type;
+ }
+ $name = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query);
+ if ($name === '') {
+ $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+ 'prepare: named parameter with an empty name');
+ return $err;
+ }
+ $query = substr_replace($query, '?', $position, strlen($name)+1);
+ $position = $p_position + 1;
+ } else {
+ $position = $p_position;
+ }
+ }
+ $connection = ($this->in_transaction ? $this->transaction_id : $this->connection);
+ $statement = ibase_prepare($connection, $query);
+
+ $class_name = 'MDB2_Statement_'.$this->phptype;
+ $obj =& new $class_name($this, $statement, $query, $types, $result_types, $this->row_limit, $this->row_offset);
+ return $obj;
+ }
+
+ // }}}
+ // {{{ 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';
+ $this->expectError('*');
+ $result = $this->queryOne($query, 'integer');
+ $this->popExpect();
+ if (PEAR::isError($result)) {
+ if ($ondemand) {
+ $this->loadModule('Manager');
+ // Since we are creating the sequence on demand
+ // we know the first id = 1 so initialize the
+ // sequence at 2
+ $result = $this->manager->createSequence($seq_name, 2);
+ if (PEAR::isError($result)) {
+ return $this->raiseError(MDB2_ERROR, null, null,
+ '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;
+ }
+}
+?> \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 10:30:26 +0000