forked from GNUsocial/gnu-social
1d4f1f6bf6
Added some of the standard directories darcs-hash:20080506151729-84dde-563da8505e06a7302041c93ab157ced31165876c.gz
943 lines
29 KiB
PHP
943 lines
29 KiB
PHP
<?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 sybase extension
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* for interacting with Sybase databases
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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 Antônio Carlos Venâncio Júnior <floripa@php.net>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2007 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: sybase.php,v 1.87 2007/09/21 13:40:42 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 sybase extension
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* for interacting with Sybase 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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* WARNING: This driver may fail with multiple connections under the
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* same user/pass/host and different databases.
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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 Antônio Carlos Venâncio Júnior <floripa@php.net>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2007 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: 1.7.14RC1
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* @link http://pear.php.net/package/DB
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*/
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class DB_sybase 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 = 'sybase';
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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 = 'sybase';
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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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* @var array
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*/
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var $features = array(
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'limit' => 'emulate',
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'new_link' => false,
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'numrows' => true,
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'pconnect' => true,
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'prepare' => false,
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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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);
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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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* 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 quantity of transactions begun
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*
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* {@internal While this is private, it can't actually be designated
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* private in PHP 5 because it is directly accessed in the test suite.}}
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*
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* @var integer
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* @access private
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*/
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var $transaction_opcount = 0;
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/**
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* The database specified in the DSN
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*
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* It's a fix to allow calls to different databases in the same script.
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*
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* @var string
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* @access private
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*/
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var $_db = '';
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// }}}
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// {{{ constructor
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/**
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* This constructor calls <kbd>$this->DB_common()</kbd>
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*
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* @return void
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*/
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function DB_sybase()
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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 sybase driver supports the following extra DSN options:
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* + appname The application name to use on this connection.
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* Available since PEAR DB 1.7.0.
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* + charset The character set to use on this connection.
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* Available since PEAR DB 1.7.0.
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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('sybase') &&
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!PEAR::loadExtension('sybase_ct'))
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{
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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 = $dsn['dbsyntax'];
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}
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$dsn['hostspec'] = $dsn['hostspec'] ? $dsn['hostspec'] : 'localhost';
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$dsn['password'] = !empty($dsn['password']) ? $dsn['password'] : false;
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$dsn['charset'] = isset($dsn['charset']) ? $dsn['charset'] : false;
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$dsn['appname'] = isset($dsn['appname']) ? $dsn['appname'] : false;
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$connect_function = $persistent ? 'sybase_pconnect' : 'sybase_connect';
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if ($dsn['username']) {
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$this->connection = @$connect_function($dsn['hostspec'],
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$dsn['username'],
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$dsn['password'],
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$dsn['charset'],
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$dsn['appname']);
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} else {
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return $this->raiseError(DB_ERROR_CONNECT_FAILED,
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null, null, null,
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'The DSN did not contain a username.');
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}
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if (!$this->connection) {
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return $this->raiseError(DB_ERROR_CONNECT_FAILED,
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null, null, null,
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@sybase_get_last_message());
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}
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if ($dsn['database']) {
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if (!@sybase_select_db($dsn['database'], $this->connection)) {
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return $this->raiseError(DB_ERROR_NODBSELECTED,
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null, null, null,
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@sybase_get_last_message());
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}
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$this->_db = $dsn['database'];
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}
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return DB_OK;
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}
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// }}}
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// {{{ disconnect()
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/**
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* Disconnects from the database server
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*
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* @return bool TRUE on success, FALSE on failure
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*/
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function disconnect()
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{
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$ret = @sybase_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 = $query;
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if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
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return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
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}
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$query = $this->modifyQuery($query);
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if (!$this->autocommit && $ismanip) {
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if ($this->transaction_opcount == 0) {
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$result = @sybase_query('BEGIN TRANSACTION', $this->connection);
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if (!$result) {
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return $this->sybaseRaiseError();
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}
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}
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$this->transaction_opcount++;
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}
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$result = @sybase_query($query, $this->connection);
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if (!$result) {
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return $this->sybaseRaiseError();
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}
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if (is_resource($result)) {
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return $result;
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}
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// Determine which queries that should return data, and which
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// should return an error code only.
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return $ismanip ? DB_OK : $result;
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}
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// }}}
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// {{{ nextResult()
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/**
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* Move the internal sybase result pointer to the next available result
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*
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* @param a valid sybase result resource
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*
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* @access public
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*
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* @return true if a result is available otherwise return false
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*/
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function nextResult($result)
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{
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return false;
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}
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// }}}
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// {{{ fetchInto()
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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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*
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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"
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* because DB_result is a separate object.
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*
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* @param resource $result the query result resource
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* @param array $arr the referenced array to put the data in
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* @param int $fetchmode how the resulting array should be indexed
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* @param int $rownum the row number to fetch (0 = first row)
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*
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* @return mixed DB_OK on success, NULL when the end of a result set is
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* reached or on failure
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*
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* @see DB_result::fetchInto()
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*/
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function fetchInto($result, &$arr, $fetchmode, $rownum = null)
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{
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if ($rownum !== null) {
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if (!@sybase_data_seek($result, $rownum)) {
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return null;
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}
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}
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if ($fetchmode & DB_FETCHMODE_ASSOC) {
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if (function_exists('sybase_fetch_assoc')) {
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$arr = @sybase_fetch_assoc($result);
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} else {
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if ($arr = @sybase_fetch_array($result)) {
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foreach ($arr as $key => $value) {
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if (is_int($key)) {
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unset($arr[$key]);
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}
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}
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}
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}
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if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
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$arr = array_change_key_case($arr, CASE_LOWER);
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}
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} else {
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$arr = @sybase_fetch_row($result);
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}
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if (!$arr) {
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return null;
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}
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if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
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$this->_rtrimArrayValues($arr);
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}
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if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
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$this->_convertNullArrayValuesToEmpty($arr);
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}
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return DB_OK;
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}
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// }}}
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// {{{ freeResult()
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/**
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* Deletes the result set and frees the memory occupied by the result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::free() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return bool TRUE on success, FALSE if $result is invalid
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*
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* @see DB_result::free()
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*/
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function freeResult($result)
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{
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return is_resource($result) ? sybase_free_result($result) : false;
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}
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// }}}
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// {{{ numCols()
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/**
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* Gets the number of columns in a result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::numCols() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return int the number of columns. A DB_Error object on failure.
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*
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* @see DB_result::numCols()
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*/
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function numCols($result)
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{
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$cols = @sybase_num_fields($result);
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if (!$cols) {
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return $this->sybaseRaiseError();
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}
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return $cols;
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}
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// }}}
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// {{{ numRows()
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/**
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* Gets the number of rows in a result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::numRows() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return int the number of rows. A DB_Error object on failure.
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*
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* @see DB_result::numRows()
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*/
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function numRows($result)
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{
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$rows = @sybase_num_rows($result);
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if ($rows === false) {
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return $this->sybaseRaiseError();
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}
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return $rows;
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}
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// }}}
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// {{{ affectedRows()
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/**
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* Determines the number of rows affected by a data maniuplation query
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*
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* 0 is returned for queries that don't manipulate data.
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*
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* @return int the number of rows. A DB_Error object on failure.
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*/
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function affectedRows()
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{
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if ($this->_last_query_manip) {
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$result = @sybase_affected_rows($this->connection);
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} else {
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$result = 0;
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}
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return $result;
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}
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// }}}
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// {{{ nextId()
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/**
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* Returns the next free id in a sequence
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*
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* @param string $seq_name name of the sequence
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* @param boolean $ondemand when true, the seqence is automatically
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* created if it does not exist
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*
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* @return int the next id number in the sequence.
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* A DB_Error object on failure.
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*
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* @see DB_common::nextID(), DB_common::getSequenceName(),
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* DB_sybase::createSequence(), DB_sybase::dropSequence()
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*/
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function nextId($seq_name, $ondemand = true)
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{
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$seqname = $this->getSequenceName($seq_name);
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if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
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return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
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}
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$repeat = 0;
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do {
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$this->pushErrorHandling(PEAR_ERROR_RETURN);
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$result = $this->query("INSERT INTO $seqname (vapor) VALUES (0)");
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$this->popErrorHandling();
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if ($ondemand && DB::isError($result) &&
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($result->getCode() == DB_ERROR || $result->getCode() == DB_ERROR_NOSUCHTABLE))
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{
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$repeat = 1;
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$result = $this->createSequence($seq_name);
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if (DB::isError($result)) {
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return $this->raiseError($result);
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}
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} elseif (!DB::isError($result)) {
|
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$result = $this->query("SELECT @@IDENTITY FROM $seqname");
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$repeat = 0;
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} else {
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$repeat = false;
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}
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} while ($repeat);
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if (DB::isError($result)) {
|
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return $this->raiseError($result);
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}
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$result = $result->fetchRow(DB_FETCHMODE_ORDERED);
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return $result[0];
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}
|
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|
|
/**
|
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* Creates a new sequence
|
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*
|
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* @param string $seq_name name of the new sequence
|
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*
|
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* @return int DB_OK on success. A DB_Error object on failure.
|
|
*
|
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* @see DB_common::createSequence(), DB_common::getSequenceName(),
|
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* DB_sybase::nextID(), DB_sybase::dropSequence()
|
|
*/
|
|
function createSequence($seq_name)
|
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{
|
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return $this->query('CREATE TABLE '
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. $this->getSequenceName($seq_name)
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. ' (id numeric(10, 0) IDENTITY NOT NULL,'
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. ' vapor int NULL)');
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}
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// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* Deletes a sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be deleted
|
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*
|
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* @return int DB_OK on success. A DB_Error object on failure.
|
|
*
|
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* @see DB_common::dropSequence(), DB_common::getSequenceName(),
|
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* DB_sybase::nextID(), DB_sybase::createSequence()
|
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*/
|
|
function dropSequence($seq_name)
|
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{
|
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return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
|
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}
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|
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// }}}
|
|
// {{{ quoteFloat()
|
|
|
|
/**
|
|
* Formats a float value for use within a query in a locale-independent
|
|
* manner.
|
|
*
|
|
* @param float the float value to be quoted.
|
|
* @return string the quoted string.
|
|
* @see DB_common::quoteSmart()
|
|
* @since Method available since release 1.7.8.
|
|
*/
|
|
function quoteFloat($float) {
|
|
return $this->escapeSimple(str_replace(',', '.', strval(floatval($float))));
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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)
|
|
{
|
|
// XXX if $this->transaction_opcount > 0, we should probably
|
|
// issue a warning here.
|
|
$this->autocommit = $onoff ? true : false;
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ commit()
|
|
|
|
/**
|
|
* Commits the current transaction
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*/
|
|
function commit()
|
|
{
|
|
if ($this->transaction_opcount > 0) {
|
|
if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
|
|
return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
|
|
}
|
|
$result = @sybase_query('COMMIT', $this->connection);
|
|
$this->transaction_opcount = 0;
|
|
if (!$result) {
|
|
return $this->sybaseRaiseError();
|
|
}
|
|
}
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ rollback()
|
|
|
|
/**
|
|
* Reverts the current transaction
|
|
*
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
|
*/
|
|
function rollback()
|
|
{
|
|
if ($this->transaction_opcount > 0) {
|
|
if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
|
|
return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
|
|
}
|
|
$result = @sybase_query('ROLLBACK', $this->connection);
|
|
$this->transaction_opcount = 0;
|
|
if (!$result) {
|
|
return $this->sybaseRaiseError();
|
|
}
|
|
}
|
|
return DB_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ sybaseRaiseError()
|
|
|
|
/**
|
|
* Produces a DB_Error object regarding the current problem
|
|
*
|
|
* @param int $errno if the error is being manually raised pass a
|
|
* DB_ERROR* constant here. If this isn't passed
|
|
* the error information gathered from the DBMS.
|
|
*
|
|
* @return object the DB_Error object
|
|
*
|
|
* @see DB_common::raiseError(),
|
|
* DB_sybase::errorNative(), DB_sybase::errorCode()
|
|
*/
|
|
function sybaseRaiseError($errno = null)
|
|
{
|
|
$native = $this->errorNative();
|
|
if ($errno === null) {
|
|
$errno = $this->errorCode($native);
|
|
}
|
|
return $this->raiseError($errno, null, null, null, $native);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorNative()
|
|
|
|
/**
|
|
* Gets the DBMS' native error message produced by the last query
|
|
*
|
|
* @return string the DBMS' error message
|
|
*/
|
|
function errorNative()
|
|
{
|
|
return @sybase_get_last_message();
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorCode()
|
|
|
|
/**
|
|
* Determines PEAR::DB error code from the database's text error message.
|
|
*
|
|
* @param string $errormsg error message returned from the database
|
|
* @return integer an error number from a DB error constant
|
|
*/
|
|
function errorCode($errormsg)
|
|
{
|
|
static $error_regexps;
|
|
|
|
// PHP 5.2+ prepends the function name to $php_errormsg, so we need
|
|
// this hack to work around it, per bug #9599.
|
|
$errormsg = preg_replace('/^sybase[a-z_]+\(\): /', '', $errormsg);
|
|
|
|
if (!isset($error_regexps)) {
|
|
$error_regexps = array(
|
|
'/Incorrect syntax near/'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Unclosed quote before the character string [\"\'].*[\"\']\./'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/Implicit conversion (from datatype|of NUMERIC value)/i'
|
|
=> DB_ERROR_INVALID_NUMBER,
|
|
'/Cannot drop the table [\"\'].+[\"\'], because it doesn\'t exist in the system catalogs\./'
|
|
=> DB_ERROR_NOSUCHTABLE,
|
|
'/Only the owner of object [\"\'].+[\"\'] or a user with System Administrator \(SA\) role can run this command\./'
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
|
'/^.+ permission denied on object .+, database .+, owner .+/'
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
|
'/^.* permission denied, database .+, owner .+/'
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
|
'/[^.*] not found\./'
|
|
=> DB_ERROR_NOSUCHTABLE,
|
|
'/There is already an object named/'
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
|
'/Invalid column name/'
|
|
=> DB_ERROR_NOSUCHFIELD,
|
|
'/does not allow null values/'
|
|
=> DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'/Command has been aborted/'
|
|
=> DB_ERROR_CONSTRAINT,
|
|
'/^Cannot drop the index .* because it doesn\'t exist/i'
|
|
=> DB_ERROR_NOT_FOUND,
|
|
'/^There is already an index/i'
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
|
'/^There are fewer columns in the INSERT statement than values specified/i'
|
|
=> DB_ERROR_VALUE_COUNT_ON_ROW,
|
|
'/Divide by zero/i'
|
|
=> DB_ERROR_DIVZERO,
|
|
);
|
|
}
|
|
|
|
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 $mode a valid tableInfo mode
|
|
*
|
|
* @return array an associative array with the information requested.
|
|
* A DB_Error object on failure.
|
|
*
|
|
* @see DB_common::tableInfo()
|
|
* @since Method available since Release 1.6.0
|
|
*/
|
|
function tableInfo($result, $mode = null)
|
|
{
|
|
if (is_string($result)) {
|
|
/*
|
|
* Probably received a table name.
|
|
* Create a result resource identifier.
|
|
*/
|
|
if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
|
|
return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
|
|
}
|
|
$id = @sybase_query("SELECT * FROM $result WHERE 1=0",
|
|
$this->connection);
|
|
$got_string = true;
|
|
} elseif (isset($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 $this->sybaseRaiseError(DB_ERROR_NEED_MORE_DATA);
|
|
}
|
|
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
|
$case_func = 'strtolower';
|
|
} else {
|
|
$case_func = 'strval';
|
|
}
|
|
|
|
$count = @sybase_num_fields($id);
|
|
$res = array();
|
|
|
|
if ($mode) {
|
|
$res['num_fields'] = $count;
|
|
}
|
|
|
|
for ($i = 0; $i < $count; $i++) {
|
|
$f = @sybase_fetch_field($id, $i);
|
|
// column_source is often blank
|
|
$res[$i] = array(
|
|
'table' => $got_string
|
|
? $case_func($result)
|
|
: $case_func($f->column_source),
|
|
'name' => $case_func($f->name),
|
|
'type' => $f->type,
|
|
'len' => $f->max_length,
|
|
'flags' => '',
|
|
);
|
|
if ($res[$i]['table']) {
|
|
$res[$i]['flags'] = $this->_sybase_field_flags(
|
|
$res[$i]['table'], $res[$i]['name']);
|
|
}
|
|
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) {
|
|
@sybase_free_result($id);
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _sybase_field_flags()
|
|
|
|
/**
|
|
* Get the flags for a field
|
|
*
|
|
* Currently supports:
|
|
* + <samp>unique_key</samp> (unique index, unique check or primary_key)
|
|
* + <samp>multiple_key</samp> (multi-key index)
|
|
*
|
|
* @param string $table the table name
|
|
* @param string $column the field name
|
|
*
|
|
* @return string space delimited string of flags. Empty string if none.
|
|
*
|
|
* @access private
|
|
*/
|
|
function _sybase_field_flags($table, $column)
|
|
{
|
|
static $tableName = null;
|
|
static $flags = array();
|
|
|
|
if ($table != $tableName) {
|
|
$flags = array();
|
|
$tableName = $table;
|
|
|
|
/* We're running sp_helpindex directly because it doesn't exist in
|
|
* older versions of ASE -- unfortunately, we can't just use
|
|
* DB::isError() because the user may be using callback error
|
|
* handling. */
|
|
$res = @sybase_query("sp_helpindex $table", $this->connection);
|
|
|
|
if ($res === false || $res === true) {
|
|
// Fake a valid response for BC reasons.
|
|
return '';
|
|
}
|
|
|
|
while (($val = sybase_fetch_assoc($res)) !== false) {
|
|
if (!isset($val['index_keys'])) {
|
|
/* No useful information returned. Break and be done with
|
|
* it, which preserves the pre-1.7.9 behaviour. */
|
|
break;
|
|
}
|
|
|
|
$keys = explode(', ', trim($val['index_keys']));
|
|
|
|
if (sizeof($keys) > 1) {
|
|
foreach ($keys as $key) {
|
|
$this->_add_flag($flags[$key], 'multiple_key');
|
|
}
|
|
}
|
|
|
|
if (strpos($val['index_description'], 'unique')) {
|
|
foreach ($keys as $key) {
|
|
$this->_add_flag($flags[$key], 'unique_key');
|
|
}
|
|
}
|
|
}
|
|
|
|
sybase_free_result($res);
|
|
|
|
}
|
|
|
|
if (array_key_exists($column, $flags)) {
|
|
return(implode(' ', $flags[$column]));
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _add_flag()
|
|
|
|
/**
|
|
* Adds a string to the flags array if the flag is not yet in there
|
|
* - if there is no flag present the array is created
|
|
*
|
|
* @param array $array reference of flags array to add a value to
|
|
* @param mixed $value value to add to the flag array
|
|
*
|
|
* @return void
|
|
*
|
|
* @access private
|
|
*/
|
|
function _add_flag(&$array, $value)
|
|
{
|
|
if (!is_array($array)) {
|
|
$array = array($value);
|
|
} elseif (!in_array($value, $array)) {
|
|
array_push($array, $value);
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 name FROM sysobjects WHERE type = 'U'"
|
|
. ' ORDER BY name';
|
|
case 'views':
|
|
return "SELECT name FROM sysobjects WHERE type = 'V'";
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/
|
|
|
|
?>
|