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<?php |
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// |
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// +----------------------------------------------------------------------+ |
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// | PHP Version 4 | |
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// +----------------------------------------------------------------------+ |
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// | Copyright (c) 1997-2002 The PHP Group | |
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// +----------------------------------------------------------------------+ |
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// | This source file is subject to version 2.02 of the PHP license, | |
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// | that is bundled with this package in the file LICENSE, and is | |
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// | available at through the world-wide-web at | |
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// | http://www.php.net/license/2_02.txt. | |
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// | If you did not receive a copy of the PHP license and are unable to | |
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// | obtain it through the world-wide-web, please send a note to | |
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// | license@php.net so we can mail you a copy immediately. | |
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// +----------------------------------------------------------------------+ |
| 16 |
// | Authors: Rui Hirokawa <rui_hirokawa@ybb.ne.jp> | |
| 17 |
// | Stig Bakken <ssb@fast.no> | |
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// +----------------------------------------------------------------------+ |
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// |
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// $Id: pgsql.php,v 1.65.2.3 2002/04/10 08:38:42 edink Exp $ |
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// |
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// Database independent query interface definition for PHP's PostgreSQL |
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// extension. |
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// |
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|
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// |
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// XXX legend: |
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// |
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// XXX ERRORMSG: The error message from the pgsql function should |
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// be registered here. |
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// |
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|
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require_once 'DB/common.php'; |
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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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var $connection; |
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var $phptype, $dbsyntax; |
| 41 |
var $prepare_tokens = array(); |
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var $prepare_types = array(); |
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var $transaction_opcount = 0; |
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var $dsn = array(); |
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var $row = array(); |
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var $num_rows = array(); |
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var $affected = 0; |
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var $autocommit = true; |
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var $fetchmode = DB_FETCHMODE_ORDERED; |
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|
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// }}} |
| 52 |
// {{{ constructor |
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|
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function DB_pgsql() |
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{ |
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$this->DB_common(); |
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$this->phptype = 'pgsql'; |
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$this->dbsyntax = 'pgsql'; |
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$this->features = array( |
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'prepare' => false, |
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'pconnect' => true, |
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'transactions' => true, |
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'limit' => 'alter' |
| 64 |
); |
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$this->errorcode_map = array( |
| 66 |
); |
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} |
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|
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// }}} |
| 70 |
// {{{ connect() |
| 71 |
|
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/** |
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* Connect to a database and log in as the specified user. |
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* |
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* @param $dsn the data source name (see DB::parseDSN for syntax) |
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* @param $persistent (optional) whether the connection should |
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* be persistent |
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* |
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* @return int DB_OK on success, a DB error code on failure |
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*/ |
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function connect($dsninfo, $persistent = false) |
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{ |
| 83 |
if (!DB::assertExtension('pgsql')) |
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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|
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$this->dsn = $dsninfo; |
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$protocol = (isset($dsninfo['protocol'])) ? $dsninfo['protocol'] : 'tcp'; |
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$connstr = ''; |
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|
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if ($protocol == 'tcp') { |
| 91 |
if ($dsninfo['hostspec']) { |
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$connstr = 'host=' . $dsninfo['hostspec']; |
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} |
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if ($dsninfo['port']) { |
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$connstr .= ' port=' . $dsninfo['port']; |
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} |
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} |
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|
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if (isset($dsninfo['database'])) { |
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$connstr .= ' dbname=' . $dsninfo['database']; |
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} |
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if (!empty($dsninfo['username'])) { |
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$connstr .= ' user=' . $dsninfo['username']; |
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} |
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if (!empty($dsninfo['password'])) { |
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$connstr .= ' password=' . $dsninfo['password']; |
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} |
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if (!empty($dsninfo['options'])) { |
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$connstr .= ' options=' . $dsninfo['options']; |
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} |
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if (!empty($dsninfo['tty'])) { |
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$connstr .= ' tty=' . $dsninfo['tty']; |
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} |
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|
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$connect_function = $persistent ? 'pg_pconnect' : 'pg_connect'; |
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// catch error |
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ob_start(); |
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$conn = $connect_function($connstr); |
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$error = ob_get_contents(); |
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ob_end_clean(); |
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if ($conn == false) { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, |
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null, null, strip_tags($error)); |
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} |
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$this->connection = $conn; |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ disconnect() |
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|
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/** |
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* Log out and disconnect from the database. |
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* |
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* @return bool TRUE on success, FALSE if not connected. |
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*/ |
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function disconnect() |
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{ |
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$ret = @pg_close($this->connection); // XXX ERRORMSG |
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$this->connection = null; |
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return $ret; |
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} |
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|
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// }}} |
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// {{{ simpleQuery() |
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|
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/** |
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* Send a query to PostgreSQL and return the results as a |
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* PostgreSQL resource identifier. |
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* |
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* @param $query the SQL query |
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* |
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* @return int returns a valid PostgreSQL result for successful SELECT |
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* queries, DB_OK for other successful queries. A DB error code |
| 155 |
* is returned on failure. |
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*/ |
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function simpleQuery($query) |
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{ |
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$ismanip = DB::isManip($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, $query); |
| 172 |
if (!$result) { |
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return $this->pgsqlRaiseError(); |
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} |
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// Determine which queries that should return data, and which |
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// should return an error code only. |
| 177 |
if ($ismanip) { |
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$this->affected = @pg_cmdtuples($result); |
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return DB_OK; |
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} elseif (preg_match('/^\s*\(?\s*SELECT\s+/si', $query) && |
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!preg_match('/^\s*\(?\s*SELECT\s+INTO\s/si', $query)) { |
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/* PostgreSQL commands: |
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ABORT, ALTER, BEGIN, CLOSE, CLUSTER, COMMIT, COPY, |
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CREATE, DECLARE, DELETE, DROP TABLE, EXPLAIN, FETCH, |
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GRANT, INSERT, LISTEN, LOAD, LOCK, MOVE, NOTIFY, RESET, |
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REVOKE, ROLLBACK, SELECT, SELECT INTO, SET, SHOW, |
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UNLISTEN, UPDATE, VACUUM |
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*/ |
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$this->row[$result] = 0; // reset the row counter. |
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$numrows = $this->numrows($result); |
| 191 |
if (is_object($numrows)) { |
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return $numrows; |
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} |
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$this->num_rows[$result] = $numrows; |
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$this->affected = 0; |
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return $result; |
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} else { |
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$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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// }}} |
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// {{{ nextResult() |
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|
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/** |
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* Move the internal pgsql result pointer to the next available result |
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* |
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* @param a valid fbsql result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
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{ |
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return false; |
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} |
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|
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// }}} |
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// {{{ errorCode() |
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|
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/** |
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* Map native error codes to DB's portable ones. Requires that |
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* the DB implementation's constructor fills in the $errorcode_map |
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* property. |
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* |
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* @param $nativecode the native error code, as returned by the backend |
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* database extension (string or integer) |
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* |
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* @return int a portable DB error code, or FALSE if this DB |
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* implementation has no mapping for the given error code. |
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*/ |
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|
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function errorCode($errormsg) |
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{ |
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static $error_regexps; |
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if (empty($error_regexps)) { |
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$error_regexps = array( |
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'/(Table does not exist\.|Relation [\"\'].*[\"\'] does not exist|sequence does not exist|class ".+" not found)$/' => DB_ERROR_NOSUCHTABLE, |
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'/Relation [\"\'].*[\"\'] already exists|Cannot insert a duplicate key into (a )?unique index.*/' => DB_ERROR_ALREADY_EXISTS, |
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'/divide by zero$/' => DB_ERROR_DIVZERO, |
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'/pg_atoi: error in .*: can\'t parse /' => DB_ERROR_INVALID_NUMBER, |
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'/ttribute [\"\'].*[\"\'] not found$|Relation [\"\'].*[\"\'] does not have attribute [\"\'].*[\"\']/' => DB_ERROR_NOSUCHFIELD, |
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'/parser: parse error at or near \"/' => DB_ERROR_SYNTAX, |
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'/referential integrity violation/' => DB_ERROR_CONSTRAINT |
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); |
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} |
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foreach ($error_regexps as $regexp => $code) { |
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if (preg_match($regexp, $errormsg)) { |
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return $code; |
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} |
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} |
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// Fall back to DB_ERROR if there was no mapping. |
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return DB_ERROR; |
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} |
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|
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// }}} |
| 259 |
/** |
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* Fetch and return a row of data (it uses fetchInto for that) |
| 261 |
* @param $result PostgreSQL result identifier |
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* @param $fetchmode format of fetched row array |
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* @param $rownum the absolute row number to fetch |
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* |
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* @return array a row of data, or false on error |
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*/ |
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function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null) |
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{ |
| 269 |
if ($fetchmode == DB_FETCHMODE_DEFAULT) { |
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$fetchmode = $this->fetchmode; |
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} |
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$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum); |
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if ($res !== DB_OK) { |
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return $res; |
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} |
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return $arr; |
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} |
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|
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// {{{ fetchInto() |
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|
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/** |
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* Fetch a row and insert the data into an existing array. |
| 283 |
* |
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* @param $result PostgreSQL result identifier |
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* @param $row (reference) array where data from the row is stored |
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* @param $fetchmode how the array data should be indexed |
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* @param $rownum the row number to fetch |
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* |
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* @return int DB_OK on success, a DB error code on failure |
| 290 |
*/ |
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function fetchInto($result, &$row, $fetchmode, $rownum=null) |
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{ |
| 293 |
$rownum = ($rownum !== null) ? $rownum : $this->row[$result]; |
| 294 |
if ($rownum >= $this->num_rows[$result]) { |
| 295 |
return null; |
| 296 |
} |
| 297 |
if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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$row = @pg_fetch_array($result, $rownum, PGSQL_ASSOC); |
| 299 |
} else { |
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$row = @pg_fetch_row($result, $rownum); |
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} |
| 302 |
if (!$row) { |
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$err = pg_errormessage($this->connection); |
| 304 |
if (!$err) { |
| 305 |
return null; |
| 306 |
} |
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return $this->pgsqlRaiseError(); |
| 308 |
} |
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$this->row[$result] = ++$rownum; |
| 310 |
return DB_OK; |
| 311 |
} |
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|
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// }}} |
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// {{{ freeResult() |
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|
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/** |
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* Free the internal resources associated with $result. |
| 318 |
* |
| 319 |
* @param $result int PostgreSQL result identifier or DB statement identifier |
| 320 |
* |
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* @return bool TRUE on success, FALSE if $result is invalid |
| 322 |
*/ |
| 323 |
function freeResult($result) |
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{ |
| 325 |
if (is_resource($result)) { |
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return @pg_freeresult($result); |
| 327 |
} |
| 328 |
if (!isset($this->prepare_tokens[(int)$result])) { |
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return false; |
| 330 |
} |
| 331 |
unset($this->prepare_tokens[(int)$result]); |
| 332 |
unset($this->prepare_types[(int)$result]); |
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unset($this->row[(int)$result]); |
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unset($this->num_rows[(int)$result]); |
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$this->affected = 0; |
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return true; |
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} |
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|
| 339 |
// }}} |
| 340 |
// {{{ quote() |
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/** |
| 342 |
* Quote the given string so it can be safely used within string delimiters |
| 343 |
* in a query. |
| 344 |
* @param $string mixed Data to be quoted |
| 345 |
* @return mixed "NULL" string, quoted string or original data |
| 346 |
*/ |
| 347 |
function quote($str = null) |
| 348 |
{ |
| 349 |
switch (strtolower(gettype($str))) { |
| 350 |
case 'null': |
| 351 |
return 'NULL'; |
| 352 |
case 'integer': |
| 353 |
case 'double' : |
| 354 |
return $str; |
| 355 |
case 'string': |
| 356 |
default: |
| 357 |
$str = str_replace("'", "''", $str); |
| 358 |
//PostgreSQL treats a backslash as an escape character. |
| 359 |
$str = str_replace('\\', '\\\\', $str); |
| 360 |
return "'$str'"; |
| 361 |
} |
| 362 |
} |
| 363 |
// }}} |
| 364 |
// {{{ numCols() |
| 365 |
|
| 366 |
/** |
| 367 |
* Get the number of columns in a result set. |
| 368 |
* |
| 369 |
* @param $result resource PostgreSQL result identifier |
| 370 |
* |
| 371 |
* @return int the number of columns per row in $result |
| 372 |
*/ |
| 373 |
function numCols($result) |
| 374 |
{ |
| 375 |
$cols = @pg_numfields($result); |
| 376 |
if (!$cols) { |
| 377 |
return $this->pgsqlRaiseError(); |
| 378 |
} |
| 379 |
return $cols; |
| 380 |
} |
| 381 |
|
| 382 |
// }}} |
| 383 |
// {{{ numRows() |
| 384 |
|
| 385 |
/** |
| 386 |
* Get the number of rows in a result set. |
| 387 |
* |
| 388 |
* @param $result resource PostgreSQL result identifier |
| 389 |
* |
| 390 |
* @return int the number of rows in $result |
| 391 |
*/ |
| 392 |
function numRows($result) |
| 393 |
{ |
| 394 |
$rows = @pg_numrows($result); |
| 395 |
if ($rows === null) { |
| 396 |
return $this->pgsqlRaiseError(); |
| 397 |
} |
| 398 |
return $rows; |
| 399 |
} |
| 400 |
|
| 401 |
// }}} |
| 402 |
// {{{ errorNative() |
| 403 |
|
| 404 |
/** |
| 405 |
* Get the native error code of the last error (if any) that |
| 406 |
* occured on the current connection. |
| 407 |
* |
| 408 |
* @return int native PostgreSQL error code |
| 409 |
*/ |
| 410 |
function errorNative() |
| 411 |
{ |
| 412 |
return pg_errormessage($this->connection); |
| 413 |
} |
| 414 |
|
| 415 |
// }}} |
| 416 |
// {{{ autoCommit() |
| 417 |
|
| 418 |
/** |
| 419 |
* Enable/disable automatic commits |
| 420 |
*/ |
| 421 |
function autoCommit($onoff = false) |
| 422 |
{ |
| 423 |
// XXX if $this->transaction_opcount > 0, we should probably |
| 424 |
// issue a warning here. |
| 425 |
$this->autocommit = $onoff ? true : false; |
| 426 |
return DB_OK; |
| 427 |
} |
| 428 |
|
| 429 |
// }}} |
| 430 |
// {{{ commit() |
| 431 |
|
| 432 |
/** |
| 433 |
* Commit the current transaction. |
| 434 |
*/ |
| 435 |
function commit() |
| 436 |
{ |
| 437 |
if ($this->transaction_opcount > 0) { |
| 438 |
// (disabled) hack to shut up error messages from libpq.a |
| 439 |
//@fclose(@fopen("php://stderr", "w")); |
| 440 |
$result = @pg_exec($this->connection, "end;"); |
| 441 |
$this->transaction_opcount = 0; |
| 442 |
if (!$result) { |
| 443 |
return $this->pgsqlRaiseError(); |
| 444 |
} |
| 445 |
} |
| 446 |
return DB_OK; |
| 447 |
} |
| 448 |
|
| 449 |
// }}} |
| 450 |
// {{{ rollback() |
| 451 |
|
| 452 |
/** |
| 453 |
* Roll back (undo) the current transaction. |
| 454 |
*/ |
| 455 |
function rollback() |
| 456 |
{ |
| 457 |
if ($this->transaction_opcount > 0) { |
| 458 |
$result = @pg_exec($this->connection, "abort;"); |
| 459 |
$this->transaction_opcount = 0; |
| 460 |
if (!$result) { |
| 461 |
return $this->pgsqlRaiseError(); |
| 462 |
} |
| 463 |
} |
| 464 |
return DB_OK; |
| 465 |
} |
| 466 |
|
| 467 |
// }}} |
| 468 |
// {{{ affectedRows() |
| 469 |
|
| 470 |
/** |
| 471 |
* Gets the number of rows affected by the last query. |
| 472 |
* if the last query was a select, returns 0. |
| 473 |
* |
| 474 |
* @return int number of rows affected by the last query or DB_ERROR |
| 475 |
*/ |
| 476 |
function affectedRows() |
| 477 |
{ |
| 478 |
return $this->affected; |
| 479 |
} |
| 480 |
// }}} |
| 481 |
// {{{ nextId() |
| 482 |
|
| 483 |
/** |
| 484 |
* Get the next value in a sequence. |
| 485 |
* |
| 486 |
* We are using native PostgreSQL sequences. If a sequence does |
| 487 |
* not exist, it will be created, unless $ondemand is false. |
| 488 |
* |
| 489 |
* @access public |
| 490 |
* @param string $seq_name the name of the sequence |
| 491 |
* @param bool $ondemand whether to create the sequence on demand |
| 492 |
* @return a sequence integer, or a DB error |
| 493 |
*/ |
| 494 |
function nextId($seq_name, $ondemand = true) |
| 495 |
{ |
| 496 |
$seqname = $this->getSequenceName($seq_name); |
| 497 |
$repeat = 0; |
| 498 |
do { |
| 499 |
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
| 500 |
$result = $this->query("SELECT NEXTVAL('${seqname}')"); |
| 501 |
$this->popErrorHandling(); |
| 502 |
if ($ondemand && DB::isError($result) && |
| 503 |
$result->getCode() == DB_ERROR_NOSUCHTABLE) { |
| 504 |
$repeat = 1; |
| 505 |
$result = $this->createSequence($seq_name); |
| 506 |
if (DB::isError($result)) { |
| 507 |
return $this->raiseError($result); |
| 508 |
} |
| 509 |
} else { |
| 510 |
$repeat = 0; |
| 511 |
} |
| 512 |
} while ($repeat); |
| 513 |
if (DB::isError($result)) { |
| 514 |
return $this->raiseError($result); |
| 515 |
} |
| 516 |
$arr = $result->fetchRow(DB_FETCHMODE_ORDERED); |
| 517 |
$result->free(); |
| 518 |
return $arr[0]; |
| 519 |
} |
| 520 |
|
| 521 |
// }}} |
| 522 |
// {{{ createSequence() |
| 523 |
|
| 524 |
/** |
| 525 |
* Create the sequence |
| 526 |
* |
| 527 |
* @param string $seq_name the name of the sequence |
| 528 |
* @return mixed DB_OK on success or DB error on error |
| 529 |
* @access public |
| 530 |
*/ |
| 531 |
function createSequence($seq_name) |
| 532 |
{ |
| 533 |
$seqname = $this->getSequenceName($seq_name); |
| 534 |
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
| 535 |
$result = $this->query("CREATE SEQUENCE ${seqname}"); |
| 536 |
$this->popErrorHandling(); |
| 537 |
return $result; |
| 538 |
} |
| 539 |
|
| 540 |
// }}} |
| 541 |
// {{{ dropSequence() |
| 542 |
|
| 543 |
/** |
| 544 |
* Drop a sequence |
| 545 |
* |
| 546 |
* @param string $seq_name the name of the sequence |
| 547 |
* @return mixed DB_OK on success or DB error on error |
| 548 |
* @access public |
| 549 |
*/ |
| 550 |
function dropSequence($seq_name) |
| 551 |
{ |
| 552 |
$seqname = $this->getSequenceName($seq_name); |
| 553 |
return $this->query("DROP SEQUENCE ${seqname}"); |
| 554 |
} |
| 555 |
|
| 556 |
// }}} |
| 557 |
// {{{ modifyLimitQuery() |
| 558 |
|
| 559 |
function modifyLimitQuery($query, $from, $count) |
| 560 |
{ |
| 561 |
$query = $query . " LIMIT $count, $from"; |
| 562 |
return $query; |
| 563 |
} |
| 564 |
|
| 565 |
// }}} |
| 566 |
// {{{ pgsqlRaiseError() |
| 567 |
|
| 568 |
function pgsqlRaiseError($errno = null) |
| 569 |
{ |
| 570 |
$native = $this->errorNative(); |
| 571 |
if ($errno === null) { |
| 572 |
$err = $this->errorCode($native); |
| 573 |
} else { |
| 574 |
$err = $errno; |
| 575 |
} |
| 576 |
return $this->raiseError($err, null, null, null, $native); |
| 577 |
} |
| 578 |
|
| 579 |
// }}} |
| 580 |
// {{{ _pgFieldFlags() |
| 581 |
|
| 582 |
/** |
| 583 |
* Flags of a Field |
| 584 |
* |
| 585 |
* @param int $resource PostgreSQL result identifier |
| 586 |
* @param int $num_field the field number |
| 587 |
* |
| 588 |
* @return string The flags of the field ("not_null", "default_xx", "primary_key", |
| 589 |
* "unique" and "multiple_key" are supported) |
| 590 |
* @access private |
| 591 |
*/ |
| 592 |
function _pgFieldFlags($resource, $num_field, $table_name) |
| 593 |
{ |
| 594 |
$field_name = @pg_fieldname($resource, $num_field); |
| 595 |
|
| 596 |
$result = pg_exec($this->connection, "SELECT f.attnotnull, f.atthasdef |
| 597 |
FROM pg_attribute f, pg_class tab, pg_type typ |
| 598 |
WHERE tab.relname = typ.typname |
| 599 |
AND typ.typrelid = f.attrelid |
| 600 |
AND f.attname = '$field_name' |
| 601 |
AND tab.relname = '$table_name'"); |
| 602 |
if (pg_numrows($result) > 0) { |
| 603 |
$row = pg_fetch_row($result, 0); |
| 604 |
$flags = ($row[0] == 't') ? 'not_null ' : ''; |
| 605 |
|
| 606 |
if ($row[1] == 't') { |
| 607 |
$result = pg_exec($this->connection, "SELECT a.adsrc |
| 608 |
FROM pg_attribute f, pg_class tab, pg_type typ, pg_attrdef a |
| 609 |
WHERE tab.relname = typ.typname AND typ.typrelid = f.attrelid |
| 610 |
AND f.attrelid = a.adrelid AND f.attname = '$field_name' |
| 611 |
AND tab.relname = '$table_name'"); |
| 612 |
$row = pg_fetch_row($result, 0); |
| 613 |
$num = str_replace('\'', '', $row[0]); |
| 614 |
|
| 615 |
$flags .= "default_$num "; |
| 616 |
} |
| 617 |
} |
| 618 |
$result = pg_exec($this->connection, "SELECT i.indisunique, i.indisprimary, i.indkey |
| 619 |
FROM pg_attribute f, pg_class tab, pg_type typ, pg_index i |
| 620 |
WHERE tab.relname = typ.typname |
| 621 |
AND typ.typrelid = f.attrelid |
| 622 |
AND f.attrelid = i.indrelid |
| 623 |
AND f.attname = '$field_name' |
| 624 |
AND tab.relname = '$table_name'"); |
| 625 |
$count = pg_numrows($result); |
| 626 |
|
| 627 |
for ($i = 0; $i < $count ; $i++) { |
| 628 |
$row = pg_fetch_row($result, $i); |
| 629 |
$keys = explode(" ", $row[2]); |
| 630 |
|
| 631 |
if (in_array($num_field + 1, $keys)) { |
| 632 |
$flags .= ($row[0] == 't') ? 'unique ' : ''; |
| 633 |
$flags .= ($row[1] == 't') ? 'primary ' : ''; |
| 634 |
if (count($keys) > 1) |
| 635 |
$flags .= 'multiple_key '; |
| 636 |
} |
| 637 |
} |
| 638 |
|
| 639 |
return trim($flags); |
| 640 |
} |
| 641 |
|
| 642 |
// }}} |
| 643 |
// {{{ tableInfo() |
| 644 |
|
| 645 |
/** |
| 646 |
* Returns information about a table or a result set |
| 647 |
* |
| 648 |
* NOTE: doesn't support table name and flags if called from a db_result |
| 649 |
* |
| 650 |
* @param mixed $resource PostgreSQL result identifier or table name |
| 651 |
* @param int $mode A valid tableInfo mode (DB_TABLEINFO_ORDERTABLE or |
| 652 |
* DB_TABLEINFO_ORDER) |
| 653 |
* |
| 654 |
* @return array An array with all the information |
| 655 |
*/ |
| 656 |
function tableInfo($result, $mode = null) |
| 657 |
{ |
| 658 |
$count = 0; |
| 659 |
$id = 0; |
| 660 |
$res = array(); |
| 661 |
|
| 662 |
/* |
| 663 |
* depending on $mode, metadata returns the following values: |
| 664 |
* |
| 665 |
* - mode is false (default): |
| 666 |
* $result[]: |
| 667 |
* [0]["table"] table name |
| 668 |
* [0]["name"] field name |
| 669 |
* [0]["type"] field type |
| 670 |
* [0]["len"] field length |
| 671 |
* [0]["flags"] field flags |
| 672 |
* |
| 673 |
* - mode is DB_TABLEINFO_ORDER |
| 674 |
* $result[]: |
| 675 |
* ["num_fields"] number of metadata records |
| 676 |
* [0]["table"] table name |
| 677 |
* [0]["name"] field name |
| 678 |
* [0]["type"] field type |
| 679 |
* [0]["len"] field length |
| 680 |
* [0]["flags"] field flags |
| 681 |
* ["order"][field name] index of field named "field name" |
| 682 |
* The last one is used, if you have a field name, but no index. |
| 683 |
* Test: if (isset($result['meta']['myfield'])) { ... |
| 684 |
* |
| 685 |
* - mode is DB_TABLEINFO_ORDERTABLE |
| 686 |
* the same as above. but additionally |
| 687 |
* ["ordertable"][table name][field name] index of field |
| 688 |
* named "field name" |
| 689 |
* |
| 690 |
* this is, because if you have fields from different |
| 691 |
* tables with the same field name * they override each |
| 692 |
* other with DB_TABLEINFO_ORDER |
| 693 |
* |
| 694 |
* you can combine DB_TABLEINFO_ORDER and |
| 695 |
* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER | |
| 696 |
* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL |
| 697 |
*/ |
| 698 |
|
| 699 |
// if $result is a string, then we want information about a |
| 700 |
// table without a resultset |
| 701 |
|
| 702 |
if (is_string($result)) { |
| 703 |
$id = pg_exec($this->connection,"SELECT * FROM $result"); |
| 704 |
if (empty($id)) { |
| 705 |
return $this->pgsqlRaiseError(); |
| 706 |
} |
| 707 |
} else { // else we want information about a resultset |
| 708 |
$id = $result; |
| 709 |
if (empty($id)) { |
| 710 |
return $this->pgsqlRaiseError(); |
| 711 |
} |
| 712 |
} |
| 713 |
|
| 714 |
$count = @pg_numfields($id); |
| 715 |
|
| 716 |
// made this IF due to performance (one if is faster than $count if's) |
| 717 |
if (empty($mode)) { |
| 718 |
|
| 719 |
for ($i=0; $i<$count; $i++) { |
| 720 |
$res[$i]['table'] = (is_string($result)) ? $result : ''; |
| 721 |
$res[$i]['name'] = @pg_fieldname ($id, $i); |
| 722 |
$res[$i]['type'] = @pg_fieldtype ($id, $i); |
| 723 |
$res[$i]['len'] = @pg_fieldsize ($id, $i); |
| 724 |
$res[$i]['flags'] = (is_string($result)) ? $this->_pgFieldflags($id, $i, $result) : ''; |
| 725 |
} |
| 726 |
|
| 727 |
} else { // full |
| 728 |
$res["num_fields"]= $count; |
| 729 |
|
| 730 |
for ($i=0; $i<$count; $i++) { |
| 731 |
$res[$i]['table'] = (is_string($result)) ? $result : ''; |
| 732 |
$res[$i]['name'] = @pg_fieldname ($id, $i); |
| 733 |
$res[$i]['type'] = @pg_fieldtype ($id, $i); |
| 734 |
$res[$i]['len'] = @pg_fieldsize ($id, $i); |
| 735 |
$res[$i]['flags'] = (is_string($result)) ? $this->_pgFieldFlags($id, $i, $result) : ''; |
| 736 |
if ($mode & DB_TABLEINFO_ORDER) { |
| 737 |
$res['order'][$res[$i]['name']] = $i; |
| 738 |
} |
| 739 |
if ($mode & DB_TABLEINFO_ORDERTABLE) { |
| 740 |
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
| 741 |
} |
| 742 |
} |
| 743 |
} |
| 744 |
|
| 745 |
// free the result only if we were called on a table |
| 746 |
if (is_resource($id)) { |
| 747 |
@pg_freeresult($id); |
| 748 |
} |
| 749 |
return $res; |
| 750 |
} |
| 751 |
|
| 752 |
// }}} |
| 753 |
// {{{ getTablesQuery() |
| 754 |
|
| 755 |
/** |
| 756 |
* Returns the query needed to get some backend info |
| 757 |
* @param string $type What kind of info you want to retrieve |
| 758 |
* @return string The SQL query string |
| 759 |
*/ |
| 760 |
function getSpecialQuery($type) |
| 761 |
{ |
| 762 |
switch ($type) { |
| 763 |
case 'tables': { |
| 764 |
$sql = "SELECT c.relname as \"Name\" |
| 765 |
FROM pg_class c, pg_user u |
| 766 |
WHERE c.relowner = u.usesysid AND c.relkind = 'r' |
| 767 |
AND not exists (select 1 from pg_views where viewname = c.relname) |
| 768 |
AND c.relname !~ '^pg_' |
| 769 |
UNION |
| 770 |
SELECT c.relname as \"Name\" |
| 771 |
FROM pg_class c |
| 772 |
WHERE c.relkind = 'r' |
| 773 |
AND not exists (select 1 from pg_views where viewname = c.relname) |
| 774 |
AND not exists (select 1 from pg_user where usesysid = c.relowner) |
| 775 |
AND c.relname !~ '^pg_'"; |
| 776 |
break; |
| 777 |
} |
| 778 |
case 'views': { |
| 779 |
// Table cols: viewname | viewowner | definition |
| 780 |
$sql = "SELECT viewname FROM pg_views"; |
| 781 |
break; |
| 782 |
} |
| 783 |
case 'users': { |
| 784 |
// cols: usename |usesysid|usecreatedb|usetrace|usesuper|usecatupd|passwd |valuntil |
| 785 |
$sql = 'SELECT usename FROM pg_user'; |
| 786 |
break; |
| 787 |
} |
| 788 |
case 'databases': { |
| 789 |
$sql = 'SELECT datname FROM pg_database'; |
| 790 |
break; |
| 791 |
} |
| 792 |
case 'functions': { |
| 793 |
$sql = 'SELECT proname FROM pg_proc'; |
| 794 |
break; |
| 795 |
} |
| 796 |
default: |
| 797 |
return null; |
| 798 |
} |
| 799 |
return $sql; |
| 800 |
} |
| 801 |
|
| 802 |
// }}} |
| 803 |
|
| 804 |
} |
| 805 |
|
| 806 |
// Local variables: |
| 807 |
// tab-width: 4 |
| 808 |
// c-basic-offset: 4 |
| 809 |
// End: |
| 810 |
?> |
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