forked from extern/egroupware
557 lines
14 KiB
PHP
557 lines
14 KiB
PHP
<?php
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/**************************************************************************\
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* phpGroupWare API - database support *
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* Copyright (c) 1998-2000 NetUSE AG Boris Erdmann, Kristian Koehntopp *
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* ------------------------------------------------------------------------ *
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* This is not part of phpGroupWare, but is used by phpGroupWare. *
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* http://www.phpgroupware.org/ *
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* ------------------------------------------------------------------------ *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as published *
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* by the Free Software Foundation; either version 2.1 of the License, or *
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* any later version. *
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\**************************************************************************/
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/* $Id$ */
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/* db_type setup moved after the class below - milosch */
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/**
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* Database abstraction library
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*
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* This allows phpGroupWare to use multiple database backends
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*
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* @package phpgwapi
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* @subpackage db
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* @abstract
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* @author NetUSE AG Boris Erdmann, Kristian Koehntopp <br> hacked on by phpGW
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* @copyright © 1998-2000 NetUSE AG Boris Erdmann, Kristian Koehntopp <br> 2003 FreeSoftware Foundation
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* @license LGPL
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* @link http://www.sanisoft.com/phplib/manual/DB_sql.php
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*/
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class db_
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{
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/**
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* @var string $Host database host to connect to
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*/
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var $Host = '';
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/**
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* @var string $Database name of database to use
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*/
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var $Database = '';
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/**
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* @var string $User name of database user
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*/
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var $User = '';
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/**
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* @var string $Password password for database user
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*/
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var $Password = '';
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/**
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* @var bool $auto_stripslashes automatically remove slashes when returning field values - default False
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*/
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var $auto_stripslashes = False;
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/**
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* @var int $Auto_Free automatically free results - 0 no, 1 yes
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*/
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var $Auto_Free = 0;
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/**
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* @var int $Debug enable debuging - 0 no, 1 yes
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*/
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var $Debug = 0;
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/**
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* @var string $Halt_On_Error "yes" (halt with message), "no" (ignore errors quietly), "report" (ignore errror, but spit a warning)
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*/
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var $Halt_On_Error = 'yes';
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/**
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* @var string $Seq_Table table for storing sequences ????
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*/
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var $Seq_Table = 'db_sequence';
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/**
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* @var array $Record current record
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*/
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var $Record = array();
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/**
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* @var int row number for current record
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*/
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var $Row;
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/**
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* @var int $Errno internal rdms error number for last error
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*/
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var $Errno = 0;
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/**
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* @var string descriptive text from last error
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*/
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var $Error = '';
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//i am not documenting private vars - skwashd :)
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var $xmlrpc = False;
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var $soap = False;
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/**
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* @param string $query query to be executed (optional)
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*/
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function db_($query = '')
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{
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$this->query($query);
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}
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/**
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* @return int current connection id
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*/
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function link_id()
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{
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return $this->Link_ID;
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}
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/**
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* @return int id of current query
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*/
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function query_id()
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{
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return $this->Query_ID;
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}
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/**
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* Open a connection to a database
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*
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* @param string $Database name of database to use (optional)
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* @param string $Host database host to connect to (optional)
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* @param string $User name of database user (optional)
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* @var string $Password password for database user (optional)
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*/
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function connect($Database = '', $Host = '', $User = '', $Password = '')
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{}
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/**
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* Close a connection to a database - only needed for persistent connections
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*/
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function disconnect()
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{}
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/**
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* Escape strings before sending them to the database
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*
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* @param string $str the string to be escaped
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* @return string escaped sting
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*/
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function db_addslashes($str)
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{
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if (!isset($str) || $str == '')
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{
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return '';
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}
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return addslashes($str);
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}
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/**
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* Convert a unix timestamp to a rdms specific timestamp
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*
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* @param int unix timestamp
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* @return string rdms specific timestamp
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*/
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function to_timestamp($epoch)
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{}
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/**
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* Convert a rdms specific timestamp to a unix timestamp
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*
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* @param string rdms specific timestamp
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* @return int unix timestamp
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*/
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function from_timestamp($timestamp)
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{}
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/**
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* @deprecated
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* @see limit_query()
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*/
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function limit($start)
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{}
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/**
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* Discard the current query result
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*/
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function free()
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{
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@mysql_free_result($this->Query_ID);
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$this->Query_ID = 0;
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}
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/**
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* Execute a query
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*
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* @param string $Query_String the query to be executed
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* @param mixed $line the line method was called from - use __LINE__
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* @param string $file the file method was called from - use __FILE__
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* @return int current query id if sucesful and null if fails
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*/
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function query($Query_String, $line = '', $file = '')
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{}
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/**
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* Execute a query with limited result set
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*
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* @param string $Query_String the query to be executed
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* @param int $offset row to start from
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* @param mixed $line the line method was called from - use __LINE__
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* @param string $file the file method was called from - use __FILE__
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* @param int $num_rows number of rows to return (optional), if unset will use $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs']
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* @return int current query id if sucesful and null if fails
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*/
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function limit_query($Query_String, $offset, $line = '', $file = '', $num_rows = '')
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{}
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/**
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* Move to the next row in the results set
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*
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* @return bool was another row found?
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*/
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function next_record()
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{}
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/**
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* Move to position in result set
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*
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* @param int $pos required row (optional), default first row
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* @return int 1 if sucessful or 0 if not found
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*/
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function seek($pos = 0)
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{}
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/**
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* Begin Transaction
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*
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* @return int current transaction id
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*/
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function transaction_begin()
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{
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return True;
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}
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/**
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* Complete the transaction
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*
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* @return bool True if sucessful, False if fails
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*/
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function transaction_commit()
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{
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return True;
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}
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/**
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* Rollback the current transaction
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*
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* @return bool True if sucessful, False if fails
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*/
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function transaction_abort()
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{
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return True;
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}
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/**
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* Find the primary key of the last insertion on the current db connection
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*
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* @param string $table name of table the insert was performed on
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* @param string $field the autoincrement primary key of the table
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* @return int the id, -1 if fails
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*/
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function get_last_insert_id($table, $field)
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{}
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/**
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* Lock a table
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*
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* @param string $table name of table to lock
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* @param string $mode type of lock required (optional), default write
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* @return bool True if sucessful, False if fails
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*/
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function lock($table, $mode='write')
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{}
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/**
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* Unlock a table
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*
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* @return bool True if sucessful, False if fails
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*/
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function unlock()
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{}
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/**
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* Get the number of rows affected by last update
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*
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* @return int number of rows
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*/
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function affected_rows()
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{}
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/**
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* Number of rows in current result set
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*
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* @return int number of rows
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*/
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function num_rows()
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{}
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/**
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* Number of fields in current row
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*
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* @return int number of fields
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*/
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function num_fields()
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{}
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/**
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* short hand for @see num_rows()
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*/
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function nf()
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{
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return $this->num_rows();
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}
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/**
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* short hand for print @see num_rows
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*/
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function np()
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{
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print $this->num_rows();
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}
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/**
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* Return the value of a column
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*
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* @param string/integer $Name name of field or positional index starting from 0
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* @param bool $strip_slashes string escape chars from field(optional), default false
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* @return string the field value
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*/
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function f($Name, $strip_slashes = False)
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{
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if ($strip_slashes || ($this->auto_stripslashes && ! $strip_slashes))
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{
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return stripslashes($this->Record[$Name]);
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}
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else
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{
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return $this->Record[$Name];
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}
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}
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/**
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* Print the value of a field
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*
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* @param string $Name name of field to print
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* @param bool $strip_slashes string escape chars from field(optional), default false
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*/
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function p($Name, $strip_slashes = True)
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{
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print $this->f($Name, $strip_slashes);
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}
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/**
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* Returns a query-result-row as an associative array (no numerical keys !!!)
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*
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* @param bool $do_next_record should next_record() be called or not (default not)
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* @return array/bool the associative array or False if no (more) result-row is availible
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*/
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function row($do_next_record=False)
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{
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if ($do_next_record && !$this->next_record() || !is_array($this->Record))
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{
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return False;
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}
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$result = array();
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foreach($this->Record as $column => $value)
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{
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if (!is_numeric($column))
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{
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$result[$column] = $value;
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}
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}
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return $result;
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}
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/**
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* Get the id for the next sequence - not implemented!
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*
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* @param string $seq_name name of the sequence
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* @return int sequence id
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*/
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function nextid($seq_name)
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{}
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/**
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* Get description of a table
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*
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* @param string $table name of table to describe
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* @param bool $full optional, default False summary information, True full information
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* @return array table meta data
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*/
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function metadata($table='',$full=false)
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{
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/*
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* Due to compatibility problems with Table we changed the behavior
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* of metadata();
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* depending on $full, metadata returns the following values:
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*
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* - full is false (default):
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* $result[]:
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* [0]["table"] table name
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* [0]["name"] field name
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* [0]["type"] field type
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* [0]["len"] field length
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* [0]["flags"] field flags
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*
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* - full is true
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* $result[]:
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* ["num_fields"] number of metadata records
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* [0]["table"] table name
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* [0]["name"] field name
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* [0]["type"] field type
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* [0]["len"] field length
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* [0]["flags"] field flags
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* ["meta"][field name] index of field named "field name"
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* The last one is used, if you have a field name, but no index.
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* Test: if (isset($result['meta']['myfield'])) { ...
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*/
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}
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/**
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* Error handler
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*
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* @param string $msg error message
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* @param int $line line of calling method/function (optional)
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* @param string $file file of calling method/function (optional)
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*/
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function halt($msg, $line = '', $file = '')
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{}
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/**
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* Get a list of table names in the current database
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*
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* @return array list of the tables
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*/
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function table_names()
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{
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}
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/**
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* Return a list of indexes in current database
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*
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* @return array list of indexes
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*/
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function index_names()
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{
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return array();
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}
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/**
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* Create a new database
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*
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* @param string $adminname name of database administrator user (optional)
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* @param string $adminpasswd password for the database administrator user (optional)
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*/
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function create_database($adminname = '', $adminpasswd = '')
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{}
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/**
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* Implodes an array of column-value pairs for the use in sql-querys.
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* All data is either run through addslashes() or intval().
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*
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* @author RalfBecker<at>outdoor-training.de
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*
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* @param string $glue in most cases this will be either ',' or ' AND ', depending you your query
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* @param array $array column-value pairs
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* @param boolean $use_key should a "$key=" prefix each value, typicaly set to False for insert querys
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* @param array/boolean $only if set to an array only colums which are set (as data !!!) are written
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* typicaly used to form a WHERE-clause from the primary keys
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* @param array/boolean $column_definitions this can be set to the column-definitions-array
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* of your table ($tables_baseline[$table]['fd'] of the setup/tables_current.inc.php file).
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* If its set, the column-type-data determinates if intval() or addslashes is used.
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*/
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function column_data_implode($glue,$array,$use_key=True,$only=False,$column_definitions=False)
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{
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if (!$column_definitions)
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{
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$column_definitions = $this->column_definitions;
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}
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$pairs = array();
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foreach($array as $key => $data)
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{
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if (!$only || in_array($key,$only))
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{
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$column_type = is_array($column_definitions) ? @$colum_definitions[$key]['type'] : False;
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$values[] = ($use_key ? $key.'=' : '').
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($column_type == 'int' || $colum_type == 'auto' ?
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intval($data) : "'".$this->db_addslashes($data)."'");
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}
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}
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return implode($glue,$values);
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}
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/**
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* Sets the default column-definitions for use with column_data_implode()
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*
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* @author RalfBecker<at>outdoor-training.de
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*
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* @param array/boolean $column_definitions this can be set to the column-definitions-array
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* of your table ($tables_baseline[$table]['fd'] of the setup/tables_current.inc.php file).
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* If its set, the column-type-data determinates if intval() or addslashes is used.
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*/
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function set_column_definitions($column_definitions=False)
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{
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$this->column_definitions=$column_definitions;
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}
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/**
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* reads the table-definitions from the app's setup/tables_current.inc.php file
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*
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* @author RalfBecker<at>outdoor-training.de
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*
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* @param string $app name of the app
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* @param bool/string $table if set return only defintions of that table, else return all defintions
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* @return the table-defintions or False if file not found
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*/
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function get_table_definitions($app,$table=False)
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{
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if (!isset($this->table_definitions[$app]))
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{
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$tables_current = PHPGW_INCLUDE_ROOT . "/$app/setup/tables_current.inc.php";
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if (!@file_exists($tables_current))
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{
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return $this->table_definitions[$app] = False;
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}
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include($tables_current);
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$this->table_definitions[$app] = $phpgw_baseline;
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}
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if ($table && (!$this->table_definitions[$app] || !isset($this->table_definitions[$app][$table])))
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{
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return False;
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}
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return $table ? $this->table_definitions[$app][$table] : $this->table_definitions[$app];
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}
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}
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if(empty($GLOBALS['phpgw_info']['server']['db_type']))
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{
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$GLOBALS['phpgw_info']['server']['db_type'] = 'mysql';
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}
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include(PHPGW_API_INC.'/class.db_'.$GLOBALS['phpgw_info']['server']['db_type'].'.inc.php');
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?>
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