1136 lines
36 KiB
PHP
1136 lines
36 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 pgsql extension
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* for interacting with PostgreSQL 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 Rui Hirokawa <hirokawa@php.net>
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* @author Stig Bakken <ssb@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: pgsql.php,v 1.139 2007/11/28 02:19:44 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 pgsql extension
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* for interacting with PostgreSQL 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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* @category Database
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* @package DB
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* @author Rui Hirokawa <hirokawa@php.net>
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* @author Stig Bakken <ssb@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_pgsql 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 = 'pgsql';
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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 = 'pgsql';
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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' => 'alter',
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'new_link' => '4.3.0',
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'numrows' => true,
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'pconnect' => true,
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'prepare' => false,
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'ssl' => true,
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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 number of rows affected by a data manipulation query
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* @var integer
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*/
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var $affected = 0;
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/**
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* The current row being looked at in fetchInto()
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* @var array
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* @access private
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*/
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var $row = array();
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/**
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* The number of rows in a given result set
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* @var array
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* @access private
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*/
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var $_num_rows = array();
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// }}}
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// {{{ constructor
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/**
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* This constructor calls <kbd>$this->DB_common()</kbd>
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*
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* @return void
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*/
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function DB_pgsql()
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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 pgsql driver supports the following extra DSN options:
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* + connect_timeout How many seconds to wait for a connection to
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* be established. Available since PEAR DB 1.7.0.
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* + new_link If set to true, causes subsequent calls to
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* connect() to return a new connection link
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* instead of the existing one. WARNING: this is
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* not portable to other DBMS's. Available only
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* if PHP is >= 4.3.0 and PEAR DB is >= 1.7.0.
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* + options Command line options to be sent to the server.
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* Available since PEAR DB 1.6.4.
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* + service Specifies a service name in pg_service.conf that
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* holds additional connection parameters.
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* Available since PEAR DB 1.7.0.
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* + sslmode How should SSL be used when connecting? Values:
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* disable, allow, prefer or require.
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* Available since PEAR DB 1.7.0.
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* + tty This was used to specify where to send server
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* debug output. Available since PEAR DB 1.6.4.
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*
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* Example of connecting to a new link via a socket:
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* <code>
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* require_once 'DB.php';
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*
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* $dsn = 'pgsql://user:pass@unix(/tmp)/dbname?new_link=true';
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* $options = array(
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* 'portability' => DB_PORTABILITY_ALL,
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* );
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*
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* $db = DB::connect($dsn, $options);
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* if (PEAR::isError($db)) {
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* die($db->getMessage());
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* }
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* </code>
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*
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* @param array $dsn the data source name
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* @param bool $persistent should the connection be persistent?
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*
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* @return int DB_OK on success. A DB_Error object on failure.
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*
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* @link http://www.postgresql.org/docs/current/static/libpq.html#LIBPQ-CONNECT
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*/
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function connect($dsn, $persistent = false)
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{
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if (!PEAR::loadExtension('pgsql')) {
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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 = $dsn['dbsyntax'];
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}
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$protocol = $dsn['protocol'] ? $dsn['protocol'] : 'tcp';
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$params = array('');
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if ($protocol == 'tcp') {
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if ($dsn['hostspec']) {
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$params[0] .= 'host=' . $dsn['hostspec'];
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}
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if ($dsn['port']) {
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$params[0] .= ' port=' . $dsn['port'];
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}
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} elseif ($protocol == 'unix') {
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// Allow for pg socket in non-standard locations.
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if ($dsn['socket']) {
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$params[0] .= 'host=' . $dsn['socket'];
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}
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if ($dsn['port']) {
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$params[0] .= ' port=' . $dsn['port'];
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}
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}
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if ($dsn['database']) {
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$params[0] .= ' dbname=\'' . addslashes($dsn['database']) . '\'';
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}
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if ($dsn['username']) {
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$params[0] .= ' user=\'' . addslashes($dsn['username']) . '\'';
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}
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if ($dsn['password']) {
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$params[0] .= ' password=\'' . addslashes($dsn['password']) . '\'';
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}
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if (!empty($dsn['options'])) {
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$params[0] .= ' options=' . $dsn['options'];
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}
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if (!empty($dsn['tty'])) {
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$params[0] .= ' tty=' . $dsn['tty'];
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}
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if (!empty($dsn['connect_timeout'])) {
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$params[0] .= ' connect_timeout=' . $dsn['connect_timeout'];
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}
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if (!empty($dsn['sslmode'])) {
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$params[0] .= ' sslmode=' . $dsn['sslmode'];
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}
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if (!empty($dsn['service'])) {
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$params[0] .= ' service=' . $dsn['service'];
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}
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if (isset($dsn['new_link'])
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&& ($dsn['new_link'] == 'true' || $dsn['new_link'] === true))
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{
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if (version_compare(phpversion(), '4.3.0', '>=')) {
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$params[] = PGSQL_CONNECT_FORCE_NEW;
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}
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}
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$connect_function = $persistent ? 'pg_pconnect' : 'pg_connect';
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$ini = ini_get('track_errors');
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$php_errormsg = '';
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if ($ini) {
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$this->connection = @call_user_func_array($connect_function,
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$params);
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} else {
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@ini_set('track_errors', 1);
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$this->connection = @call_user_func_array($connect_function,
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$params);
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@ini_set('track_errors', $ini);
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}
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if (!$this->connection) {
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return $this->raiseError(DB_ERROR_CONNECT_FAILED,
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null, null, null,
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$php_errormsg);
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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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$ret = @pg_close($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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if (!$this->autocommit && $ismanip) {
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if ($this->transaction_opcount == 0) {
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$result = @pg_exec($this->connection, 'begin;');
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if (!$result) {
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return $this->pgsqlRaiseError();
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}
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}
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$this->transaction_opcount++;
|
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}
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$result = @pg_exec($this->connection, $query);
|
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if (!$result) {
|
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return $this->pgsqlRaiseError();
|
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}
|
||
|
|
|
||
|
|
/*
|
||
|
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* Determine whether queries produce affected rows, result or nothing.
|
||
|
|
*
|
||
|
|
* This logic was introduced in version 1.1 of the file by ssb,
|
||
|
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* though the regex has been modified slightly since then.
|
||
|
|
*
|
||
|
|
* PostgreSQL commands:
|
||
|
|
* ABORT, ALTER, BEGIN, CLOSE, CLUSTER, COMMIT, COPY,
|
||
|
|
* CREATE, DECLARE, DELETE, DROP TABLE, EXPLAIN, FETCH,
|
||
|
|
* GRANT, INSERT, LISTEN, LOAD, LOCK, MOVE, NOTIFY, RESET,
|
||
|
|
* REVOKE, ROLLBACK, SELECT, SELECT INTO, SET, SHOW,
|
||
|
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* UNLISTEN, UPDATE, VACUUM
|
||
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*/
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||
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if ($ismanip) {
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||
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$this->affected = @pg_affected_rows($result);
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return DB_OK;
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||
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} elseif (preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|FETCH|SHOW)\s/si',
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$query))
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{
|
||
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$this->row[(int)$result] = 0; // reset the row counter.
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$numrows = $this->numRows($result);
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if (is_object($numrows)) {
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return $numrows;
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}
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||
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$this->_num_rows[(int)$result] = $numrows;
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$this->affected = 0;
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return $result;
|
||
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} else {
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||
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$this->affected = 0;
|
||
|
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return DB_OK;
|
||
|
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}
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||
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}
|
||
|
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|
||
|
|
// }}}
|
||
|
|
// {{{ nextResult()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Move the internal pgsql result pointer to the next available result
|
||
|
|
*
|
||
|
|
* @param a valid fbsql result resource
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return true if a result is available otherwise return false
|
||
|
|
*/
|
||
|
|
function nextResult($result)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ fetchInto()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Places a row from the result set into the given array
|
||
|
|
*
|
||
|
|
* Formating of the array and the data therein are configurable.
|
||
|
|
* See DB_result::fetchInto() for more information.
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* 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 $rownum the row number to fetch (0 = first row)
|
||
|
|
*
|
||
|
|
* @return mixed DB_OK on success, NULL when the end of a result set is
|
||
|
|
* reached or on failure
|
||
|
|
*
|
||
|
|
* @see DB_result::fetchInto()
|
||
|
|
*/
|
||
|
|
function fetchInto($result, &$arr, $fetchmode, $rownum = null)
|
||
|
|
{
|
||
|
|
$result_int = (int)$result;
|
||
|
|
$rownum = ($rownum !== null) ? $rownum : $this->row[$result_int];
|
||
|
|
if ($rownum >= $this->_num_rows[$result_int]) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
if ($fetchmode & DB_FETCHMODE_ASSOC) {
|
||
|
|
$arr = @pg_fetch_array($result, $rownum, PGSQL_ASSOC);
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
|
||
|
|
$arr = array_change_key_case($arr, CASE_LOWER);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$arr = @pg_fetch_row($result, $rownum);
|
||
|
|
}
|
||
|
|
if (!$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);
|
||
|
|
}
|
||
|
|
$this->row[$result_int] = ++$rownum;
|
||
|
|
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)
|
||
|
|
{
|
||
|
|
if (is_resource($result)) {
|
||
|
|
unset($this->row[(int)$result]);
|
||
|
|
unset($this->_num_rows[(int)$result]);
|
||
|
|
$this->affected = 0;
|
||
|
|
return @pg_freeresult($result);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ quote()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @deprecated Deprecated in release 1.6.0
|
||
|
|
* @internal
|
||
|
|
*/
|
||
|
|
function quote($str)
|
||
|
|
{
|
||
|
|
return $this->quoteSmart($str);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ quoteBoolean()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Formats a boolean value for use within a query in a locale-independent
|
||
|
|
* manner.
|
||
|
|
*
|
||
|
|
* @param boolean the boolean value to be quoted.
|
||
|
|
* @return string the quoted string.
|
||
|
|
* @see DB_common::quoteSmart()
|
||
|
|
* @since Method available since release 1.7.8.
|
||
|
|
*/
|
||
|
|
function quoteBoolean($boolean) {
|
||
|
|
return $boolean ? 'TRUE' : 'FALSE';
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ escapeSimple()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Escapes a string according to the current DBMS's standards
|
||
|
|
*
|
||
|
|
* {@internal PostgreSQL treats a backslash as an escape character,
|
||
|
|
* so they are escaped as well.
|
||
|
|
*
|
||
|
|
* @param string $str the string to be escaped
|
||
|
|
*
|
||
|
|
* @return string the escaped string
|
||
|
|
*
|
||
|
|
* @see DB_common::quoteSmart()
|
||
|
|
* @since Method available since Release 1.6.0
|
||
|
|
*/
|
||
|
|
function escapeSimple($str)
|
||
|
|
{
|
||
|
|
if (function_exists('pg_escape_string')) {
|
||
|
|
/* This fixes an undocumented BC break in PHP 5.2.0 which changed
|
||
|
|
* the prototype of pg_escape_string. I'm not thrilled about having
|
||
|
|
* to sniff the PHP version, quite frankly, but it's the only way
|
||
|
|
* to deal with the problem. Revision 1.331.2.13.2.10 on
|
||
|
|
* php-src/ext/pgsql/pgsql.c (PHP_5_2 branch) is to blame, for the
|
||
|
|
* record. */
|
||
|
|
if (version_compare(PHP_VERSION, '5.2.0', '>=')) {
|
||
|
|
return pg_escape_string($this->connection, $str);
|
||
|
|
} else {
|
||
|
|
return pg_escape_string($str);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
return str_replace("'", "''", str_replace('\\', '\\\\', $str));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ 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)
|
||
|
|
{
|
||
|
|
$cols = @pg_numfields($result);
|
||
|
|
if (!$cols) {
|
||
|
|
return $this->pgsqlRaiseError();
|
||
|
|
}
|
||
|
|
return $cols;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of rows in a result set
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::numRows() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result PHP's query result resource
|
||
|
|
*
|
||
|
|
* @return int the number of rows. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_result::numRows()
|
||
|
|
*/
|
||
|
|
function numRows($result)
|
||
|
|
{
|
||
|
|
$rows = @pg_numrows($result);
|
||
|
|
if ($rows === null) {
|
||
|
|
return $this->pgsqlRaiseError();
|
||
|
|
}
|
||
|
|
return $rows;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ 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) {
|
||
|
|
// (disabled) hack to shut up error messages from libpq.a
|
||
|
|
//@fclose(@fopen("php://stderr", "w"));
|
||
|
|
$result = @pg_exec($this->connection, 'end;');
|
||
|
|
$this->transaction_opcount = 0;
|
||
|
|
if (!$result) {
|
||
|
|
return $this->pgsqlRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ rollback()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reverts the current transaction
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function rollback()
|
||
|
|
{
|
||
|
|
if ($this->transaction_opcount > 0) {
|
||
|
|
$result = @pg_exec($this->connection, 'abort;');
|
||
|
|
$this->transaction_opcount = 0;
|
||
|
|
if (!$result) {
|
||
|
|
return $this->pgsqlRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ 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()
|
||
|
|
{
|
||
|
|
return $this->affected;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ nextId()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the next free id in a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence
|
||
|
|
* @param boolean $ondemand when true, the seqence is automatically
|
||
|
|
* created if it does not exist
|
||
|
|
*
|
||
|
|
* @return int the next id number in the sequence.
|
||
|
|
* A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::nextID(), DB_common::getSequenceName(),
|
||
|
|
* DB_pgsql::createSequence(), DB_pgsql::dropSequence()
|
||
|
|
*/
|
||
|
|
function nextId($seq_name, $ondemand = true)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
$repeat = false;
|
||
|
|
do {
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$result = $this->query("SELECT NEXTVAL('${seqname}')");
|
||
|
|
$this->popErrorHandling();
|
||
|
|
if ($ondemand && DB::isError($result) &&
|
||
|
|
$result->getCode() == DB_ERROR_NOSUCHTABLE) {
|
||
|
|
$repeat = true;
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$result = $this->createSequence($seq_name);
|
||
|
|
$this->popErrorHandling();
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$repeat = false;
|
||
|
|
}
|
||
|
|
} while ($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 $seq_name name of the new sequence
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::createSequence(), DB_common::getSequenceName(),
|
||
|
|
* DB_pgsql::nextID(), DB_pgsql::dropSequence()
|
||
|
|
*/
|
||
|
|
function createSequence($seq_name)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
$result = $this->query("CREATE SEQUENCE ${seqname}");
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ dropSequence()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence to be deleted
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::dropSequence(), DB_common::getSequenceName(),
|
||
|
|
* DB_pgsql::nextID(), DB_pgsql::createSequence()
|
||
|
|
*/
|
||
|
|
function dropSequence($seq_name)
|
||
|
|
{
|
||
|
|
return $this->query('DROP SEQUENCE '
|
||
|
|
. $this->getSequenceName($seq_name));
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ modifyLimitQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds LIMIT clauses to a query string according to current DBMS standards
|
||
|
|
*
|
||
|
|
* @param string $query the query to modify
|
||
|
|
* @param int $from the row to start to fetching (0 = the first row)
|
||
|
|
* @param int $count the numbers of rows to fetch
|
||
|
|
* @param mixed $params array, string or numeric data to be used in
|
||
|
|
* execution of the statement. Quantity of items
|
||
|
|
* passed must match quantity of placeholders in
|
||
|
|
* query: meaning 1 placeholder for non-array
|
||
|
|
* parameters or 1 placeholder per array element.
|
||
|
|
*
|
||
|
|
* @return string the query string with LIMIT clauses added
|
||
|
|
*
|
||
|
|
* @access protected
|
||
|
|
*/
|
||
|
|
function modifyLimitQuery($query, $from, $count, $params = array())
|
||
|
|
{
|
||
|
|
return "$query LIMIT $count OFFSET $from";
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ pgsqlRaiseError()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces a DB_Error object regarding the current problem
|
||
|
|
*
|
||
|
|
* @param int $errno if the error is being manually raised pass a
|
||
|
|
* DB_ERROR* constant here. If this isn't passed
|
||
|
|
* the error information gathered from the DBMS.
|
||
|
|
*
|
||
|
|
* @return object the DB_Error object
|
||
|
|
*
|
||
|
|
* @see DB_common::raiseError(),
|
||
|
|
* DB_pgsql::errorNative(), DB_pgsql::errorCode()
|
||
|
|
*/
|
||
|
|
function pgsqlRaiseError($errno = null)
|
||
|
|
{
|
||
|
|
$native = $this->errorNative();
|
||
|
|
if (!$native) {
|
||
|
|
$native = 'Database connection has been lost.';
|
||
|
|
$errno = DB_ERROR_CONNECT_FAILED;
|
||
|
|
}
|
||
|
|
if ($errno === null) {
|
||
|
|
$errno = $this->errorCode($native);
|
||
|
|
}
|
||
|
|
return $this->raiseError($errno, null, null, null, $native);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ errorNative()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the DBMS' native error message produced by the last query
|
||
|
|
*
|
||
|
|
* {@internal Error messages are used instead of error codes
|
||
|
|
* in order to support older versions of PostgreSQL.}}
|
||
|
|
*
|
||
|
|
* @return string the DBMS' error message
|
||
|
|
*/
|
||
|
|
function errorNative()
|
||
|
|
{
|
||
|
|
return @pg_errormessage($this->connection);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ 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 $error_regexps;
|
||
|
|
if (!isset($error_regexps)) {
|
||
|
|
$error_regexps = array(
|
||
|
|
'/column .* (of relation .*)?does not exist/i'
|
||
|
|
=> DB_ERROR_NOSUCHFIELD,
|
||
|
|
'/(relation|sequence|table).*does not exist|class .* not found/i'
|
||
|
|
=> DB_ERROR_NOSUCHTABLE,
|
||
|
|
'/index .* does not exist/'
|
||
|
|
=> DB_ERROR_NOT_FOUND,
|
||
|
|
'/relation .* already exists/i'
|
||
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
||
|
|
'/(divide|division) by zero$/i'
|
||
|
|
=> DB_ERROR_DIVZERO,
|
||
|
|
'/pg_atoi: error in .*: can\'t parse /i'
|
||
|
|
=> DB_ERROR_INVALID_NUMBER,
|
||
|
|
'/invalid input syntax for( type)? (integer|numeric)/i'
|
||
|
|
=> DB_ERROR_INVALID_NUMBER,
|
||
|
|
'/value .* is out of range for type \w*int/i'
|
||
|
|
=> DB_ERROR_INVALID_NUMBER,
|
||
|
|
'/integer out of range/i'
|
||
|
|
=> DB_ERROR_INVALID_NUMBER,
|
||
|
|
'/value too long for type character/i'
|
||
|
|
=> DB_ERROR_INVALID,
|
||
|
|
'/attribute .* not found|relation .* does not have attribute/i'
|
||
|
|
=> DB_ERROR_NOSUCHFIELD,
|
||
|
|
'/column .* specified in USING clause does not exist in (left|right) table/i'
|
||
|
|
=> DB_ERROR_NOSUCHFIELD,
|
||
|
|
'/parser: parse error at or near/i'
|
||
|
|
=> DB_ERROR_SYNTAX,
|
||
|
|
'/syntax error at/'
|
||
|
|
=> DB_ERROR_SYNTAX,
|
||
|
|
'/column reference .* is ambiguous/i'
|
||
|
|
=> DB_ERROR_SYNTAX,
|
||
|
|
'/permission denied/'
|
||
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
||
|
|
'/violates not-null constraint/'
|
||
|
|
=> DB_ERROR_CONSTRAINT_NOT_NULL,
|
||
|
|
'/violates [\w ]+ constraint/'
|
||
|
|
=> DB_ERROR_CONSTRAINT,
|
||
|
|
'/referential integrity violation/'
|
||
|
|
=> DB_ERROR_CONSTRAINT,
|
||
|
|
'/more expressions than target columns/i'
|
||
|
|
=> DB_ERROR_VALUE_COUNT_ON_ROW,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
foreach ($error_regexps as $regexp => $code) {
|
||
|
|
if (preg_match($regexp, $errormsg)) {
|
||
|
|
return $code;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Fall back to DB_ERROR if there was no mapping.
|
||
|
|
return DB_ERROR;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ tableInfo()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns information about a table or a result set
|
||
|
|
*
|
||
|
|
* NOTE: only supports 'table' and 'flags' if <var>$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.
|
||
|
|
*/
|
||
|
|
$id = @pg_exec($this->connection, "SELECT * FROM $result LIMIT 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 $this->pgsqlRaiseError(DB_ERROR_NEED_MORE_DATA);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
||
|
|
$case_func = 'strtolower';
|
||
|
|
} else {
|
||
|
|
$case_func = 'strval';
|
||
|
|
}
|
||
|
|
|
||
|
|
$count = @pg_numfields($id);
|
||
|
|
$res = array();
|
||
|
|
|
||
|
|
if ($mode) {
|
||
|
|
$res['num_fields'] = $count;
|
||
|
|
}
|
||
|
|
|
||
|
|
for ($i = 0; $i < $count; $i++) {
|
||
|
|
$res[$i] = array(
|
||
|
|
'table' => $got_string ? $case_func($result) : '',
|
||
|
|
'name' => $case_func(@pg_fieldname($id, $i)),
|
||
|
|
'type' => @pg_fieldtype($id, $i),
|
||
|
|
'len' => @pg_fieldsize($id, $i),
|
||
|
|
'flags' => $got_string
|
||
|
|
? $this->_pgFieldFlags($id, $i, $result)
|
||
|
|
: '',
|
||
|
|
);
|
||
|
|
if ($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) {
|
||
|
|
@pg_freeresult($id);
|
||
|
|
}
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _pgFieldFlags()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get a column's flags
|
||
|
|
*
|
||
|
|
* Supports "not_null", "default_value", "primary_key", "unique_key"
|
||
|
|
* and "multiple_key". The default value is passed through
|
||
|
|
* rawurlencode() in case there are spaces in it.
|
||
|
|
*
|
||
|
|
* @param int $resource the PostgreSQL result identifier
|
||
|
|
* @param int $num_field the field number
|
||
|
|
*
|
||
|
|
* @return string the flags
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _pgFieldFlags($resource, $num_field, $table_name)
|
||
|
|
{
|
||
|
|
$field_name = @pg_fieldname($resource, $num_field);
|
||
|
|
|
||
|
|
// Check if there's a schema in $table_name and update things
|
||
|
|
// accordingly.
|
||
|
|
$from = 'pg_attribute f, pg_class tab, pg_type typ';
|
||
|
|
if (strpos($table_name, '.') !== false) {
|
||
|
|
$from .= ', pg_namespace nsp';
|
||
|
|
list($schema, $table) = explode('.', $table_name);
|
||
|
|
$tableWhere = "tab.relname = '$table' AND tab.relnamespace = nsp.oid AND nsp.nspname = '$schema'";
|
||
|
|
} else {
|
||
|
|
$tableWhere = "tab.relname = '$table_name'";
|
||
|
|
}
|
||
|
|
|
||
|
|
$result = @pg_exec($this->connection, "SELECT f.attnotnull, f.atthasdef
|
||
|
|
FROM $from
|
||
|
|
WHERE tab.relname = typ.typname
|
||
|
|
AND typ.typrelid = f.attrelid
|
||
|
|
AND f.attname = '$field_name'
|
||
|
|
AND $tableWhere");
|
||
|
|
if (@pg_numrows($result) > 0) {
|
||
|
|
$row = @pg_fetch_row($result, 0);
|
||
|
|
$flags = ($row[0] == 't') ? 'not_null ' : '';
|
||
|
|
|
||
|
|
if ($row[1] == 't') {
|
||
|
|
$result = @pg_exec($this->connection, "SELECT a.adsrc
|
||
|
|
FROM $from, pg_attrdef a
|
||
|
|
WHERE tab.relname = typ.typname AND typ.typrelid = f.attrelid
|
||
|
|
AND f.attrelid = a.adrelid AND f.attname = '$field_name'
|
||
|
|
AND $tableWhere AND f.attnum = a.adnum");
|
||
|
|
$row = @pg_fetch_row($result, 0);
|
||
|
|
$num = preg_replace("/'(.*)'::\w+/", "\\1", $row[0]);
|
||
|
|
$flags .= 'default_' . rawurlencode($num) . ' ';
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$flags = '';
|
||
|
|
}
|
||
|
|
$result = @pg_exec($this->connection, "SELECT i.indisunique, i.indisprimary, i.indkey
|
||
|
|
FROM $from, pg_index i
|
||
|
|
WHERE tab.relname = typ.typname
|
||
|
|
AND typ.typrelid = f.attrelid
|
||
|
|
AND f.attrelid = i.indrelid
|
||
|
|
AND f.attname = '$field_name'
|
||
|
|
AND $tableWhere");
|
||
|
|
$count = @pg_numrows($result);
|
||
|
|
|
||
|
|
for ($i = 0; $i < $count ; $i++) {
|
||
|
|
$row = @pg_fetch_row($result, $i);
|
||
|
|
$keys = explode(' ', $row[2]);
|
||
|
|
|
||
|
|
if (in_array($num_field + 1, $keys)) {
|
||
|
|
$flags .= ($row[0] == 't' && $row[1] == 'f') ? 'unique_key ' : '';
|
||
|
|
$flags .= ($row[1] == 't') ? 'primary_key ' : '';
|
||
|
|
if (count($keys) > 1)
|
||
|
|
$flags .= 'multiple_key ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return trim($flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ 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 c.relname AS "Name"'
|
||
|
|
. ' FROM pg_class c, pg_user u'
|
||
|
|
. ' WHERE c.relowner = u.usesysid'
|
||
|
|
. " AND c.relkind = 'r'"
|
||
|
|
. ' AND NOT EXISTS'
|
||
|
|
. ' (SELECT 1 FROM pg_views'
|
||
|
|
. ' WHERE viewname = c.relname)'
|
||
|
|
. " AND c.relname !~ '^(pg_|sql_)'"
|
||
|
|
. ' UNION'
|
||
|
|
. ' SELECT c.relname AS "Name"'
|
||
|
|
. ' FROM pg_class c'
|
||
|
|
. " WHERE c.relkind = 'r'"
|
||
|
|
. ' AND NOT EXISTS'
|
||
|
|
. ' (SELECT 1 FROM pg_views'
|
||
|
|
. ' WHERE viewname = c.relname)'
|
||
|
|
. ' AND NOT EXISTS'
|
||
|
|
. ' (SELECT 1 FROM pg_user'
|
||
|
|
. ' WHERE usesysid = c.relowner)'
|
||
|
|
. " AND c.relname !~ '^pg_'";
|
||
|
|
case 'schema.tables':
|
||
|
|
return "SELECT schemaname || '.' || tablename"
|
||
|
|
. ' AS "Name"'
|
||
|
|
. ' FROM pg_catalog.pg_tables'
|
||
|
|
. ' WHERE schemaname NOT IN'
|
||
|
|
. " ('pg_catalog', 'information_schema', 'pg_toast')";
|
||
|
|
case 'schema.views':
|
||
|
|
return "SELECT schemaname || '.' || viewname from pg_views WHERE schemaname"
|
||
|
|
. " NOT IN ('information_schema', 'pg_catalog')";
|
||
|
|
case 'views':
|
||
|
|
// Table cols: viewname | viewowner | definition
|
||
|
|
return 'SELECT viewname from pg_views WHERE schemaname'
|
||
|
|
. " NOT IN ('information_schema', 'pg_catalog')";
|
||
|
|
case 'users':
|
||
|
|
// cols: usename |usesysid|usecreatedb|usetrace|usesuper|usecatupd|passwd |valuntil
|
||
|
|
return 'SELECT usename FROM pg_user';
|
||
|
|
case 'databases':
|
||
|
|
return 'SELECT datname FROM pg_database';
|
||
|
|
case 'functions':
|
||
|
|
case 'procedures':
|
||
|
|
return 'SELECT proname FROM pg_proc WHERE proowner <> 1';
|
||
|
|
default:
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _checkManip()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if the given query is a manipulation query. This also takes into
|
||
|
|
* account the _next_query_manip flag and sets the _last_query_manip flag
|
||
|
|
* (and resets _next_query_manip) according to the result.
|
||
|
|
*
|
||
|
|
* @param string The query to check.
|
||
|
|
*
|
||
|
|
* @return boolean true if the query is a manipulation query, false
|
||
|
|
* otherwise
|
||
|
|
*
|
||
|
|
* @access protected
|
||
|
|
*/
|
||
|
|
function _checkManip($query)
|
||
|
|
{
|
||
|
|
return (preg_match('/^\s*(SAVEPOINT|RELEASE)\s+/i', $query)
|
||
|
|
|| parent::_checkManip($query));
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Local variables:
|
||
|
|
* tab-width: 4
|
||
|
|
* c-basic-offset: 4
|
||
|
|
* End:
|
||
|
|
*/
|
||
|
|
|
||
|
|
?>
|