1083 lines
33 KiB
PHP
1083 lines
33 KiB
PHP
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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* The PEAR DB driver for PHP's interbase extension
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* for interacting with Interbase and Firebird databases
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*
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* While this class works with PHP 4, PHP's InterBase extension is
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* unstable in PHP 4. Use PHP 5.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to version 3.0 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_0.txt. If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category Database
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* @package DB
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* @author Sterling Hughes <sterling@php.net>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2005 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version CVS: $Id: ibase.php,v 1.113 2007/01/12 03:11:17 aharvey Exp $
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* @link http://pear.php.net/package/DB
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*/
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/**
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* Obtain the DB_common class so it can be extended from
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*/
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require_once 'DB/common.php';
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/**
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* The methods PEAR DB uses to interact with PHP's interbase extension
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* for interacting with Interbase and Firebird databases
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*
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* These methods overload the ones declared in DB_common.
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*
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* While this class works with PHP 4, PHP's InterBase extension is
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* unstable in PHP 4. Use PHP 5.
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*
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* NOTICE: limitQuery() only works for Firebird.
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*
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* @category Database
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* @package DB
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* @author Sterling Hughes <sterling@php.net>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2005 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version Release: 1.7.11
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* @link http://pear.php.net/package/DB
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* @since Class became stable in Release 1.7.0
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*/
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class DB_ibase extends DB_common
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{
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// {{{ properties
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/**
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* The DB driver type (mysql, oci8, odbc, etc.)
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* @var string
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*/
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var $phptype = 'ibase';
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/**
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* The database syntax variant to be used (db2, access, etc.), if any
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* @var string
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*/
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var $dbsyntax = 'ibase';
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/**
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* The capabilities of this DB implementation
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*
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* The 'new_link' element contains the PHP version that first provided
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* new_link support for this DBMS. Contains false if it's unsupported.
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*
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* Meaning of the 'limit' element:
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* + 'emulate' = emulate with fetch row by number
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* + 'alter' = alter the query
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* + false = skip rows
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*
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* NOTE: only firebird supports limit.
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*
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* @var array
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*/
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var $features = array(
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'limit' => false,
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'new_link' => false,
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'numrows' => 'emulate',
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'pconnect' => true,
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'prepare' => true,
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'ssl' => false,
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'transactions' => true,
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);
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/**
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* A mapping of native error codes to DB error codes
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* @var array
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*/
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var $errorcode_map = array(
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-104 => DB_ERROR_SYNTAX,
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-150 => DB_ERROR_ACCESS_VIOLATION,
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-151 => DB_ERROR_ACCESS_VIOLATION,
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-155 => DB_ERROR_NOSUCHTABLE,
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-157 => DB_ERROR_NOSUCHFIELD,
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-158 => DB_ERROR_VALUE_COUNT_ON_ROW,
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-170 => DB_ERROR_MISMATCH,
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-171 => DB_ERROR_MISMATCH,
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-172 => DB_ERROR_INVALID,
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// -204 => // Covers too many errors, need to use regex on msg
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-205 => DB_ERROR_NOSUCHFIELD,
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-206 => DB_ERROR_NOSUCHFIELD,
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-208 => DB_ERROR_INVALID,
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-219 => DB_ERROR_NOSUCHTABLE,
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-297 => DB_ERROR_CONSTRAINT,
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-303 => DB_ERROR_INVALID,
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-413 => DB_ERROR_INVALID_NUMBER,
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-530 => DB_ERROR_CONSTRAINT,
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-551 => DB_ERROR_ACCESS_VIOLATION,
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-552 => DB_ERROR_ACCESS_VIOLATION,
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// -607 => // Covers too many errors, need to use regex on msg
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-625 => DB_ERROR_CONSTRAINT_NOT_NULL,
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-803 => DB_ERROR_CONSTRAINT,
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-804 => DB_ERROR_VALUE_COUNT_ON_ROW,
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// -902 => // Covers too many errors, need to use regex on msg
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-904 => DB_ERROR_CONNECT_FAILED,
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-922 => DB_ERROR_NOSUCHDB,
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-923 => DB_ERROR_CONNECT_FAILED,
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-924 => DB_ERROR_CONNECT_FAILED
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);
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/**
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* The raw database connection created by PHP
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* @var resource
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*/
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var $connection;
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/**
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* The DSN information for connecting to a database
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* @var array
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*/
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var $dsn = array();
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/**
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* The number of rows affected by a data manipulation query
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* @var integer
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* @access private
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*/
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var $affected = 0;
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/**
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* Should data manipulation queries be committed automatically?
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* @var bool
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* @access private
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*/
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var $autocommit = true;
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/**
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* The prepared statement handle from the most recently executed statement
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*
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* {@internal Mainly here because the InterBase/Firebird API is only
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* able to retrieve data from result sets if the statemnt handle is
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* still in scope.}}
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*
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* @var resource
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*/
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var $last_stmt;
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/**
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* Is the given prepared statement a data manipulation query?
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* @var array
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* @access private
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*/
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var $manip_query = array();
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// }}}
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// {{{ constructor
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/**
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* This constructor calls <kbd>$this->DB_common()</kbd>
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*
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* @return void
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*/
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function DB_ibase()
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{
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$this->DB_common();
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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 server, log in and open the database
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*
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* Don't call this method directly. Use DB::connect() instead.
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*
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* PEAR DB's ibase driver supports the following extra DSN options:
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* + buffers The number of database buffers to allocate for the
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* server-side cache.
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* + charset The default character set for a database.
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* + dialect The default SQL dialect for any statement
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* executed within a connection. Defaults to the
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* highest one supported by client libraries.
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* Functional only with InterBase 6 and up.
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* + role Functional only with InterBase 5 and up.
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*
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* @param array $dsn the data source name
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* @param bool $persistent should the connection be persistent?
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*
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* @return int DB_OK on success. A DB_Error object on failure.
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*/
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function connect($dsn, $persistent = false)
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{
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if (!PEAR::loadExtension('interbase')) {
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
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}
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$this->dsn = $dsn;
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if ($dsn['dbsyntax']) {
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$this->dbsyntax = $dsn['dbsyntax'];
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}
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if ($this->dbsyntax == 'firebird') {
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$this->features['limit'] = 'alter';
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}
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$params = array(
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$dsn['hostspec']
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? ($dsn['hostspec'] . ':' . $dsn['database'])
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: $dsn['database'],
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$dsn['username'] ? $dsn['username'] : null,
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$dsn['password'] ? $dsn['password'] : null,
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isset($dsn['charset']) ? $dsn['charset'] : null,
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isset($dsn['buffers']) ? $dsn['buffers'] : null,
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isset($dsn['dialect']) ? $dsn['dialect'] : null,
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isset($dsn['role']) ? $dsn['role'] : null,
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);
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$connect_function = $persistent ? 'ibase_pconnect' : 'ibase_connect';
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$this->connection = @call_user_func_array($connect_function, $params);
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if (!$this->connection) {
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return $this->ibaseRaiseError(DB_ERROR_CONNECT_FAILED);
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}
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return DB_OK;
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}
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// }}}
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// {{{ disconnect()
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/**
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* Disconnects from the database server
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*
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* @return bool TRUE on success, FALSE on failure
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*/
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function disconnect()
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{
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$ret = @ibase_close($this->connection);
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$this->connection = null;
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return $ret;
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}
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// }}}
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// {{{ simpleQuery()
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/**
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* Sends a query to the database server
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*
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* @param string the SQL query string
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*
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* @return mixed + a PHP result resrouce for successful SELECT queries
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* + the DB_OK constant for other successful queries
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* + a DB_Error object on failure
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*/
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function simpleQuery($query)
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{
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$ismanip = $this->_checkManip($query);
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$this->last_query = $query;
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$query = $this->modifyQuery($query);
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$result = @ibase_query($this->connection, $query);
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if (!$result) {
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return $this->ibaseRaiseError();
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}
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if ($this->autocommit && $ismanip) {
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@ibase_commit($this->connection);
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}
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if ($ismanip) {
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$this->affected = $result;
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return DB_OK;
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} else {
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$this->affected = 0;
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return $result;
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}
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}
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// }}}
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// {{{ modifyLimitQuery()
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/**
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* Adds LIMIT clauses to a query string according to current DBMS standards
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*
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* Only works with Firebird.
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*
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* @param string $query the query to modify
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* @param int $from the row to start to fetching (0 = the first row)
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* @param int $count the numbers of rows to fetch
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* @param mixed $params array, string or numeric data to be used in
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* execution of the statement. Quantity of items
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* passed must match quantity of placeholders in
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* query: meaning 1 placeholder for non-array
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* parameters or 1 placeholder per array element.
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*
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* @return string the query string with LIMIT clauses added
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*
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* @access protected
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*/
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function modifyLimitQuery($query, $from, $count, $params = array())
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{
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if ($this->dsn['dbsyntax'] == 'firebird') {
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$query = preg_replace('/^([\s(])*SELECT/i',
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"SELECT FIRST $count SKIP $from", $query);
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}
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return $query;
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}
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// }}}
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// {{{ nextResult()
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/**
|
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* Move the internal ibase result pointer to the next available result
|
||
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*
|
||
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* @param a valid fbsql result resource
|
||
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*
|
||
|
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* @access public
|
||
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*
|
||
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* @return true if a result is available otherwise return false
|
||
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*/
|
||
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function nextResult($result)
|
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{
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return false;
|
||
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}
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|
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|
||
|
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// }}}
|
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// {{{ fetchInto()
|
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|
|
|
||
|
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/**
|
||
|
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* Places a row from the result set into the given array
|
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*
|
||
|
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* Formating of the array and the data therein are configurable.
|
||
|
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* See DB_result::fetchInto() for more information.
|
||
|
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*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
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* DB_result::fetchInto() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result the query result resource
|
||
|
|
* @param array $arr the referenced array to put the data in
|
||
|
|
* @param int $fetchmode how the resulting array should be indexed
|
||
|
|
* @param int $rownum the row number to fetch (0 = first row)
|
||
|
|
*
|
||
|
|
* @return mixed DB_OK on success, NULL when the end of a result set is
|
||
|
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* reached or on failure
|
||
|
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*
|
||
|
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* @see DB_result::fetchInto()
|
||
|
|
*/
|
||
|
|
function fetchInto($result, &$arr, $fetchmode, $rownum = null)
|
||
|
|
{
|
||
|
|
if ($rownum !== null) {
|
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return $this->ibaseRaiseError(DB_ERROR_NOT_CAPABLE);
|
||
|
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}
|
||
|
|
if ($fetchmode & DB_FETCHMODE_ASSOC) {
|
||
|
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if (function_exists('ibase_fetch_assoc')) {
|
||
|
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$arr = @ibase_fetch_assoc($result);
|
||
|
|
} else {
|
||
|
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$arr = get_object_vars(ibase_fetch_object($result));
|
||
|
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}
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
|
||
|
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$arr = array_change_key_case($arr, CASE_LOWER);
|
||
|
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}
|
||
|
|
} else {
|
||
|
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$arr = @ibase_fetch_row($result);
|
||
|
|
}
|
||
|
|
if (!$arr) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
|
||
|
|
$this->_rtrimArrayValues($arr);
|
||
|
|
}
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
|
||
|
|
$this->_convertNullArrayValuesToEmpty($arr);
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ freeResult()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes the result set and frees the memory occupied by the result set
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::free() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result PHP's query result resource
|
||
|
|
*
|
||
|
|
* @return bool TRUE on success, FALSE if $result is invalid
|
||
|
|
*
|
||
|
|
* @see DB_result::free()
|
||
|
|
*/
|
||
|
|
function freeResult($result)
|
||
|
|
{
|
||
|
|
return is_resource($result) ? ibase_free_result($result) : false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ freeQuery()
|
||
|
|
|
||
|
|
function freeQuery($query)
|
||
|
|
{
|
||
|
|
return is_resource($query) ? ibase_free_query($query) : false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ affectedRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines the number of rows affected by a data maniuplation query
|
||
|
|
*
|
||
|
|
* 0 is returned for queries that don't manipulate data.
|
||
|
|
*
|
||
|
|
* @return int the number of rows. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function affectedRows()
|
||
|
|
{
|
||
|
|
if (is_integer($this->affected)) {
|
||
|
|
return $this->affected;
|
||
|
|
}
|
||
|
|
return $this->ibaseRaiseError(DB_ERROR_NOT_CAPABLE);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numCols()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of columns in a result set
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::numCols() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result PHP's query result resource
|
||
|
|
*
|
||
|
|
* @return int the number of columns. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_result::numCols()
|
||
|
|
*/
|
||
|
|
function numCols($result)
|
||
|
|
{
|
||
|
|
$cols = @ibase_num_fields($result);
|
||
|
|
if (!$cols) {
|
||
|
|
return $this->ibaseRaiseError();
|
||
|
|
}
|
||
|
|
return $cols;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ prepare()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepares a query for multiple execution with execute().
|
||
|
|
*
|
||
|
|
* prepare() requires a generic query as string like <code>
|
||
|
|
* INSERT INTO numbers VALUES (?, ?, ?)
|
||
|
|
* </code>. The <kbd>?</kbd> characters are placeholders.
|
||
|
|
*
|
||
|
|
* Three types of placeholders can be used:
|
||
|
|
* + <kbd>?</kbd> a quoted scalar value, i.e. strings, integers
|
||
|
|
* + <kbd>!</kbd> value is inserted 'as is'
|
||
|
|
* + <kbd>&</kbd> requires a file name. The file's contents get
|
||
|
|
* inserted into the query (i.e. saving binary
|
||
|
|
* data in a db)
|
||
|
|
*
|
||
|
|
* Use backslashes to escape placeholder characters if you don't want
|
||
|
|
* them to be interpreted as placeholders. Example: <code>
|
||
|
|
* "UPDATE foo SET col=? WHERE col='over \& under'"
|
||
|
|
* </code>
|
||
|
|
*
|
||
|
|
* @param string $query query to be prepared
|
||
|
|
* @return mixed DB statement resource on success. DB_Error on failure.
|
||
|
|
*/
|
||
|
|
function prepare($query)
|
||
|
|
{
|
||
|
|
$tokens = preg_split('/((?<!\\\)[&?!])/', $query, -1,
|
||
|
|
PREG_SPLIT_DELIM_CAPTURE);
|
||
|
|
$token = 0;
|
||
|
|
$types = array();
|
||
|
|
$newquery = '';
|
||
|
|
|
||
|
|
foreach ($tokens as $key => $val) {
|
||
|
|
switch ($val) {
|
||
|
|
case '?':
|
||
|
|
$types[$token++] = DB_PARAM_SCALAR;
|
||
|
|
break;
|
||
|
|
case '&':
|
||
|
|
$types[$token++] = DB_PARAM_OPAQUE;
|
||
|
|
break;
|
||
|
|
case '!':
|
||
|
|
$types[$token++] = DB_PARAM_MISC;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$tokens[$key] = preg_replace('/\\\([&?!])/', "\\1", $val);
|
||
|
|
$newquery .= $tokens[$key] . '?';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$newquery = substr($newquery, 0, -1);
|
||
|
|
$this->last_query = $query;
|
||
|
|
$newquery = $this->modifyQuery($newquery);
|
||
|
|
$stmt = @ibase_prepare($this->connection, $newquery);
|
||
|
|
|
||
|
|
if ($stmt === false) {
|
||
|
|
$stmt = $this->ibaseRaiseError();
|
||
|
|
} else {
|
||
|
|
$this->prepare_types[(int)$stmt] = $types;
|
||
|
|
$this->manip_query[(int)$stmt] = DB::isManip($query);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $stmt;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ execute()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Executes a DB statement prepared with prepare().
|
||
|
|
*
|
||
|
|
* @param resource $stmt a DB statement resource returned from prepare()
|
||
|
|
* @param mixed $data array, string or numeric data to be used in
|
||
|
|
* execution of the statement. Quantity of items
|
||
|
|
* passed must match quantity of placeholders in
|
||
|
|
* query: meaning 1 for non-array items or the
|
||
|
|
* quantity of elements in the array.
|
||
|
|
* @return object a new DB_Result or a DB_Error when fail
|
||
|
|
* @see DB_ibase::prepare()
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function &execute($stmt, $data = array())
|
||
|
|
{
|
||
|
|
$data = (array)$data;
|
||
|
|
$this->last_parameters = $data;
|
||
|
|
|
||
|
|
$types =& $this->prepare_types[(int)$stmt];
|
||
|
|
if (count($types) != count($data)) {
|
||
|
|
$tmp =& $this->raiseError(DB_ERROR_MISMATCH);
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
$i = 0;
|
||
|
|
foreach ($data as $key => $value) {
|
||
|
|
if ($types[$i] == DB_PARAM_MISC) {
|
||
|
|
/*
|
||
|
|
* ibase doesn't seem to have the ability to pass a
|
||
|
|
* parameter along unchanged, so strip off quotes from start
|
||
|
|
* and end, plus turn two single quotes to one single quote,
|
||
|
|
* in order to avoid the quotes getting escaped by
|
||
|
|
* ibase and ending up in the database.
|
||
|
|
*/
|
||
|
|
$data[$key] = preg_replace("/^'(.*)'$/", "\\1", $data[$key]);
|
||
|
|
$data[$key] = str_replace("''", "'", $data[$key]);
|
||
|
|
} elseif ($types[$i] == DB_PARAM_OPAQUE) {
|
||
|
|
$fp = @fopen($data[$key], 'rb');
|
||
|
|
if (!$fp) {
|
||
|
|
$tmp =& $this->raiseError(DB_ERROR_ACCESS_VIOLATION);
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
$data[$key] = fread($fp, filesize($data[$key]));
|
||
|
|
fclose($fp);
|
||
|
|
}
|
||
|
|
$i++;
|
||
|
|
}
|
||
|
|
|
||
|
|
array_unshift($data, $stmt);
|
||
|
|
|
||
|
|
$res = call_user_func_array('ibase_execute', $data);
|
||
|
|
if (!$res) {
|
||
|
|
$tmp =& $this->ibaseRaiseError();
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
/* XXX need this?
|
||
|
|
if ($this->autocommit && $this->manip_query[(int)$stmt]) {
|
||
|
|
@ibase_commit($this->connection);
|
||
|
|
}*/
|
||
|
|
$this->last_stmt = $stmt;
|
||
|
|
if ($this->manip_query[(int)$stmt] || $this->_next_query_manip) {
|
||
|
|
$this->_last_query_manip = true;
|
||
|
|
$this->_next_query_manip = false;
|
||
|
|
$tmp = DB_OK;
|
||
|
|
} else {
|
||
|
|
$this->_last_query_manip = false;
|
||
|
|
$tmp =& new DB_result($this, $res);
|
||
|
|
}
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Frees the internal resources associated with a prepared query
|
||
|
|
*
|
||
|
|
* @param resource $stmt the prepared statement's PHP resource
|
||
|
|
* @param bool $free_resource should the PHP resource be freed too?
|
||
|
|
* Use false if you need to get data
|
||
|
|
* from the result set later.
|
||
|
|
*
|
||
|
|
* @return bool TRUE on success, FALSE if $result is invalid
|
||
|
|
*
|
||
|
|
* @see DB_ibase::prepare()
|
||
|
|
*/
|
||
|
|
function freePrepared($stmt, $free_resource = true)
|
||
|
|
{
|
||
|
|
if (!is_resource($stmt)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if ($free_resource) {
|
||
|
|
@ibase_free_query($stmt);
|
||
|
|
}
|
||
|
|
unset($this->prepare_tokens[(int)$stmt]);
|
||
|
|
unset($this->prepare_types[(int)$stmt]);
|
||
|
|
unset($this->manip_query[(int)$stmt]);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ autoCommit()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Enables or disables automatic commits
|
||
|
|
*
|
||
|
|
* @param bool $onoff true turns it on, false turns it off
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object if the driver
|
||
|
|
* doesn't support auto-committing transactions.
|
||
|
|
*/
|
||
|
|
function autoCommit($onoff = false)
|
||
|
|
{
|
||
|
|
$this->autocommit = $onoff ? 1 : 0;
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ commit()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Commits the current transaction
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function commit()
|
||
|
|
{
|
||
|
|
return @ibase_commit($this->connection);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ rollback()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reverts the current transaction
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function rollback()
|
||
|
|
{
|
||
|
|
return @ibase_rollback($this->connection);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ transactionInit()
|
||
|
|
|
||
|
|
function transactionInit($trans_args = 0)
|
||
|
|
{
|
||
|
|
return $trans_args
|
||
|
|
? @ibase_trans($trans_args, $this->connection)
|
||
|
|
: @ibase_trans();
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ nextId()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the next free id in a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence
|
||
|
|
* @param boolean $ondemand when true, the seqence is automatically
|
||
|
|
* created if it does not exist
|
||
|
|
*
|
||
|
|
* @return int the next id number in the sequence.
|
||
|
|
* A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::nextID(), DB_common::getSequenceName(),
|
||
|
|
* DB_ibase::createSequence(), DB_ibase::dropSequence()
|
||
|
|
*/
|
||
|
|
function nextId($seq_name, $ondemand = true)
|
||
|
|
{
|
||
|
|
$sqn = strtoupper($this->getSequenceName($seq_name));
|
||
|
|
$repeat = 0;
|
||
|
|
do {
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$result =& $this->query("SELECT GEN_ID(${sqn}, 1) "
|
||
|
|
. 'FROM RDB$GENERATORS '
|
||
|
|
. "WHERE RDB\$GENERATOR_NAME='${sqn}'");
|
||
|
|
$this->popErrorHandling();
|
||
|
|
if ($ondemand && DB::isError($result)) {
|
||
|
|
$repeat = 1;
|
||
|
|
$result = $this->createSequence($seq_name);
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$repeat = 0;
|
||
|
|
}
|
||
|
|
} while ($repeat);
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
$arr = $result->fetchRow(DB_FETCHMODE_ORDERED);
|
||
|
|
$result->free();
|
||
|
|
return $arr[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ createSequence()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a new sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the new sequence
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::createSequence(), DB_common::getSequenceName(),
|
||
|
|
* DB_ibase::nextID(), DB_ibase::dropSequence()
|
||
|
|
*/
|
||
|
|
function createSequence($seq_name)
|
||
|
|
{
|
||
|
|
$sqn = strtoupper($this->getSequenceName($seq_name));
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$result = $this->query("CREATE GENERATOR ${sqn}");
|
||
|
|
$this->popErrorHandling();
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ dropSequence()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence to be deleted
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::dropSequence(), DB_common::getSequenceName(),
|
||
|
|
* DB_ibase::nextID(), DB_ibase::createSequence()
|
||
|
|
*/
|
||
|
|
function dropSequence($seq_name)
|
||
|
|
{
|
||
|
|
return $this->query('DELETE FROM RDB$GENERATORS '
|
||
|
|
. "WHERE RDB\$GENERATOR_NAME='"
|
||
|
|
. strtoupper($this->getSequenceName($seq_name))
|
||
|
|
. "'");
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _ibaseFieldFlags()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the column's flags
|
||
|
|
*
|
||
|
|
* Supports "primary_key", "unique_key", "not_null", "default",
|
||
|
|
* "computed" and "blob".
|
||
|
|
*
|
||
|
|
* @param string $field_name the name of the field
|
||
|
|
* @param string $table_name the name of the table
|
||
|
|
*
|
||
|
|
* @return string the flags
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _ibaseFieldFlags($field_name, $table_name)
|
||
|
|
{
|
||
|
|
$sql = 'SELECT R.RDB$CONSTRAINT_TYPE CTYPE'
|
||
|
|
.' FROM RDB$INDEX_SEGMENTS I'
|
||
|
|
.' JOIN RDB$RELATION_CONSTRAINTS R ON I.RDB$INDEX_NAME=R.RDB$INDEX_NAME'
|
||
|
|
.' WHERE I.RDB$FIELD_NAME=\'' . $field_name . '\''
|
||
|
|
.' AND UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\'';
|
||
|
|
|
||
|
|
$result = @ibase_query($this->connection, $sql);
|
||
|
|
if (!$result) {
|
||
|
|
return $this->ibaseRaiseError();
|
||
|
|
}
|
||
|
|
|
||
|
|
$flags = '';
|
||
|
|
if ($obj = @ibase_fetch_object($result)) {
|
||
|
|
@ibase_free_result($result);
|
||
|
|
if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'PRIMARY KEY') {
|
||
|
|
$flags .= 'primary_key ';
|
||
|
|
}
|
||
|
|
if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'UNIQUE') {
|
||
|
|
$flags .= 'unique_key ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$sql = 'SELECT R.RDB$NULL_FLAG AS NFLAG,'
|
||
|
|
.' R.RDB$DEFAULT_SOURCE AS DSOURCE,'
|
||
|
|
.' F.RDB$FIELD_TYPE AS FTYPE,'
|
||
|
|
.' F.RDB$COMPUTED_SOURCE AS CSOURCE'
|
||
|
|
.' FROM RDB$RELATION_FIELDS R '
|
||
|
|
.' JOIN RDB$FIELDS F ON R.RDB$FIELD_SOURCE=F.RDB$FIELD_NAME'
|
||
|
|
.' WHERE UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\''
|
||
|
|
.' AND R.RDB$FIELD_NAME=\'' . $field_name . '\'';
|
||
|
|
|
||
|
|
$result = @ibase_query($this->connection, $sql);
|
||
|
|
if (!$result) {
|
||
|
|
return $this->ibaseRaiseError();
|
||
|
|
}
|
||
|
|
if ($obj = @ibase_fetch_object($result)) {
|
||
|
|
@ibase_free_result($result);
|
||
|
|
if (isset($obj->NFLAG)) {
|
||
|
|
$flags .= 'not_null ';
|
||
|
|
}
|
||
|
|
if (isset($obj->DSOURCE)) {
|
||
|
|
$flags .= 'default ';
|
||
|
|
}
|
||
|
|
if (isset($obj->CSOURCE)) {
|
||
|
|
$flags .= 'computed ';
|
||
|
|
}
|
||
|
|
if (isset($obj->FTYPE) && $obj->FTYPE == 261) {
|
||
|
|
$flags .= 'blob ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return trim($flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ ibaseRaiseError()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces a DB_Error object regarding the current problem
|
||
|
|
*
|
||
|
|
* @param int $errno if the error is being manually raised pass a
|
||
|
|
* DB_ERROR* constant here. If this isn't passed
|
||
|
|
* the error information gathered from the DBMS.
|
||
|
|
*
|
||
|
|
* @return object the DB_Error object
|
||
|
|
*
|
||
|
|
* @see DB_common::raiseError(),
|
||
|
|
* DB_ibase::errorNative(), DB_ibase::errorCode()
|
||
|
|
*/
|
||
|
|
function &ibaseRaiseError($errno = null)
|
||
|
|
{
|
||
|
|
if ($errno === null) {
|
||
|
|
$errno = $this->errorCode($this->errorNative());
|
||
|
|
}
|
||
|
|
$tmp =& $this->raiseError($errno, null, null, null, @ibase_errmsg());
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ errorNative()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the DBMS' native error code produced by the last query
|
||
|
|
*
|
||
|
|
* @return int the DBMS' error code. NULL if there is no error code.
|
||
|
|
*
|
||
|
|
* @since Method available since Release 1.7.0
|
||
|
|
*/
|
||
|
|
function errorNative()
|
||
|
|
{
|
||
|
|
if (function_exists('ibase_errcode')) {
|
||
|
|
return @ibase_errcode();
|
||
|
|
}
|
||
|
|
if (preg_match('/^Dynamic SQL Error SQL error code = ([0-9-]+)/i',
|
||
|
|
@ibase_errmsg(), $m)) {
|
||
|
|
return (int)$m[1];
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ errorCode()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Maps native error codes to DB's portable ones
|
||
|
|
*
|
||
|
|
* @param int $nativecode the error code returned by the DBMS
|
||
|
|
*
|
||
|
|
* @return int the portable DB error code. Return DB_ERROR if the
|
||
|
|
* current driver doesn't have a mapping for the
|
||
|
|
* $nativecode submitted.
|
||
|
|
*
|
||
|
|
* @since Method available since Release 1.7.0
|
||
|
|
*/
|
||
|
|
function errorCode($nativecode = null)
|
||
|
|
{
|
||
|
|
if (isset($this->errorcode_map[$nativecode])) {
|
||
|
|
return $this->errorcode_map[$nativecode];
|
||
|
|
}
|
||
|
|
|
||
|
|
static $error_regexps;
|
||
|
|
if (!isset($error_regexps)) {
|
||
|
|
$error_regexps = array(
|
||
|
|
'/generator .* is not defined/'
|
||
|
|
=> DB_ERROR_SYNTAX, // for compat. w ibase_errcode()
|
||
|
|
'/table.*(not exist|not found|unknown)/i'
|
||
|
|
=> DB_ERROR_NOSUCHTABLE,
|
||
|
|
'/table .* already exists/i'
|
||
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
||
|
|
'/unsuccessful metadata update .* failed attempt to store duplicate value/i'
|
||
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
||
|
|
'/unsuccessful metadata update .* not found/i'
|
||
|
|
=> DB_ERROR_NOT_FOUND,
|
||
|
|
'/validation error for column .* value "\*\*\* null/i'
|
||
|
|
=> DB_ERROR_CONSTRAINT_NOT_NULL,
|
||
|
|
'/violation of [\w ]+ constraint/i'
|
||
|
|
=> DB_ERROR_CONSTRAINT,
|
||
|
|
'/conversion error from string/i'
|
||
|
|
=> DB_ERROR_INVALID_NUMBER,
|
||
|
|
'/no permission for/i'
|
||
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
||
|
|
'/arithmetic exception, numeric overflow, or string truncation/i'
|
||
|
|
=> DB_ERROR_INVALID,
|
||
|
|
'/feature is not supported/i'
|
||
|
|
=> DB_ERROR_NOT_CAPABLE,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
$errormsg = @ibase_errmsg();
|
||
|
|
foreach ($error_regexps as $regexp => $code) {
|
||
|
|
if (preg_match($regexp, $errormsg)) {
|
||
|
|
return $code;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ tableInfo()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns information about a table or a result set
|
||
|
|
*
|
||
|
|
* NOTE: only supports 'table' and 'flags' if <var>$result</var>
|
||
|
|
* is a table name.
|
||
|
|
*
|
||
|
|
* @param object|string $result DB_result object from a query or a
|
||
|
|
* string containing the name of a table.
|
||
|
|
* While this also accepts a query result
|
||
|
|
* resource identifier, this behavior is
|
||
|
|
* deprecated.
|
||
|
|
* @param int $mode a valid tableInfo mode
|
||
|
|
*
|
||
|
|
* @return array an associative array with the information requested.
|
||
|
|
* A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::tableInfo()
|
||
|
|
*/
|
||
|
|
function tableInfo($result, $mode = null)
|
||
|
|
{
|
||
|
|
if (is_string($result)) {
|
||
|
|
/*
|
||
|
|
* Probably received a table name.
|
||
|
|
* Create a result resource identifier.
|
||
|
|
*/
|
||
|
|
$id = @ibase_query($this->connection,
|
||
|
|
"SELECT * FROM $result WHERE 1=0");
|
||
|
|
$got_string = true;
|
||
|
|
} elseif (isset($result->result)) {
|
||
|
|
/*
|
||
|
|
* Probably received a result object.
|
||
|
|
* Extract the result resource identifier.
|
||
|
|
*/
|
||
|
|
$id = $result->result;
|
||
|
|
$got_string = false;
|
||
|
|
} else {
|
||
|
|
/*
|
||
|
|
* Probably received a result resource identifier.
|
||
|
|
* Copy it.
|
||
|
|
* Deprecated. Here for compatibility only.
|
||
|
|
*/
|
||
|
|
$id = $result;
|
||
|
|
$got_string = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!is_resource($id)) {
|
||
|
|
return $this->ibaseRaiseError(DB_ERROR_NEED_MORE_DATA);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
||
|
|
$case_func = 'strtolower';
|
||
|
|
} else {
|
||
|
|
$case_func = 'strval';
|
||
|
|
}
|
||
|
|
|
||
|
|
$count = @ibase_num_fields($id);
|
||
|
|
$res = array();
|
||
|
|
|
||
|
|
if ($mode) {
|
||
|
|
$res['num_fields'] = $count;
|
||
|
|
}
|
||
|
|
|
||
|
|
for ($i = 0; $i < $count; $i++) {
|
||
|
|
$info = @ibase_field_info($id, $i);
|
||
|
|
$res[$i] = array(
|
||
|
|
'table' => $got_string ? $case_func($result) : '',
|
||
|
|
'name' => $case_func($info['name']),
|
||
|
|
'type' => $info['type'],
|
||
|
|
'len' => $info['length'],
|
||
|
|
'flags' => ($got_string)
|
||
|
|
? $this->_ibaseFieldFlags($info['name'], $result)
|
||
|
|
: '',
|
||
|
|
);
|
||
|
|
if ($mode & DB_TABLEINFO_ORDER) {
|
||
|
|
$res['order'][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
if ($mode & DB_TABLEINFO_ORDERTABLE) {
|
||
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// free the result only if we were called on a table
|
||
|
|
if ($got_string) {
|
||
|
|
@ibase_free_result($id);
|
||
|
|
}
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ getSpecialQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Obtains the query string needed for listing a given type of objects
|
||
|
|
*
|
||
|
|
* @param string $type the kind of objects you want to retrieve
|
||
|
|
*
|
||
|
|
* @return string the SQL query string or null if the driver doesn't
|
||
|
|
* support the object type requested
|
||
|
|
*
|
||
|
|
* @access protected
|
||
|
|
* @see DB_common::getListOf()
|
||
|
|
*/
|
||
|
|
function getSpecialQuery($type)
|
||
|
|
{
|
||
|
|
switch ($type) {
|
||
|
|
case 'tables':
|
||
|
|
return 'SELECT DISTINCT R.RDB$RELATION_NAME FROM '
|
||
|
|
. 'RDB$RELATION_FIELDS R WHERE R.RDB$SYSTEM_FLAG=0';
|
||
|
|
case 'views':
|
||
|
|
return 'SELECT DISTINCT RDB$VIEW_NAME from RDB$VIEW_RELATIONS';
|
||
|
|
case 'users':
|
||
|
|
return 'SELECT DISTINCT RDB$USER FROM RDB$USER_PRIVILEGES';
|
||
|
|
default:
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Local variables:
|
||
|
|
* tab-width: 4
|
||
|
|
* c-basic-offset: 4
|
||
|
|
* End:
|
||
|
|
*/
|
||
|
|
|
||
|
|
?>
|