mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-24 08:53:37 +01:00
779 lines
19 KiB
PHP
779 lines
19 KiB
PHP
<?php
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/**************************************************************************\
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* phpGroupWare API - database support via ADOdb *
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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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/**
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* Database abstraction library
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*
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* This allows eGroupWare to use multiple database backends via ADOdb
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*
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* @package phpgwapi
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* @subpackage db
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* @author RalfBecker@outdoor-training.de
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* @license LGPL
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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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if (@$GLOBALS['phpgw_info']['server']['use_adodb'])
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{
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include_once('adodb/adodb.inc.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 $type database type
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*/
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var $type = '';
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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 = 'no';//'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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var $Link_ID = 0;
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var $Query_ID = 0;
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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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function db_($query='') {} // only for NOT useing ADOdb
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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 = '', $Password = '')
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{
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/* Handle defaults */
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if ($Database == '')
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{
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$Database = $this->Database;
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}
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if ($Host == '')
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{
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$Host = $this->Host;
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}
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if ($User == '')
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{
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$User = $this->User;
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}
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if ($Password == '')
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{
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$Password = $this->Password;
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}
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if (!$this->Link_ID)
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{
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$this->type = $GLOBALS['phpgw_info']['server']['db_type'];
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if (!is_object($GLOBALS['phpgw']->ADOdb))
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{
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switch($this->type) // convert to ADO db-type-names
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{
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case 'pgsql':
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$type = 'postgres';
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break;
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default:
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$type = $this->type;
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}
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$GLOBALS['phpgw']->adodb = ADONewConnection($type);
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if (!$GLOBALS['phpgw']->adodb)
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{
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$this->halt("No ADOdb support for '$type' !!!");
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}
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$connect = $GLOBALS['phpgw_info']['server']['db_persistent'] ? 'PConnect' : 'Connect';
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if (!$connect = $GLOBALS['phpgw']->adodb->$connect($Host, $User, $Password, $Database))
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{
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$this->halt("ADOdb::$connect($Host, $User, \$Password, $Database) failed.");
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}
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}
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$this->Link_ID = &$GLOBALS['phpgw']->adodb;
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}
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return $this->Link_ID;
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}
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/**
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* Close a connection to a database - not needed for ADOdb connection
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*/
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function disconnect()
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{
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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) || $str == '')
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{
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return '';
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}
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// REMOVE-IF-ONLY-ADODB
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if (!@$GLOBALS['phpgw_info']['server']['use_adodb'])
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{
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return addslashes($str);
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}
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// the substring is needed as the string is already in quotes
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return substr($this->Link_ID->quote($str),1,-1);
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}
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/**
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* Convert a unix timestamp to a rdms specific timestamp
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*
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* @param int unix timestamp
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* @return string rdms specific timestamp
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*/
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function to_timestamp($epoch)
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{
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return $this->Link_ID->DBTimeStamp($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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return $this->Link_ID->UnixTimeStamp($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($start)
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{}
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/**
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* Discard the current query result
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*/
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function free()
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{
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unset($this->Query_ID); // else copying of the db-object does not work
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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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* @param int $offset row to start from
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* @param int $num_rows number of rows to return (optional), if unset will use $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs']
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* @return int current query id if sucesful and null if fails
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*/
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function query($Query_String, $line = '', $file = '', $offset=0, $num_rows=-1)
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{
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if ($Query_String == '')
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{
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return 0;
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}
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if (!$this->connect())
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{
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return 0; /* we already complained in connect() about that. */
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};
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# New query, discard previous result.
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if ($this->Query_ID)
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{
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$this->free();
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}
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if ($this->Link_ID->fetchMode != ADODB_FETCH_BOTH)
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{
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$this->Link_ID->SetFetchMode(ADODB_FETCH_BOTH);
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}
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if (! $num_rows)
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{
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$num_rows = $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs'];
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}
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if ($num_rows > 0)
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{
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$this->Query_ID = $this->Link_ID->SelectLimit($Query_String,$num_rows,intval($offset));
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}
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else
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{
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$this->Query_ID = $this->Link_ID->Execute($Query_String);
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}
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$this->Row = 0;
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$this->Errno = $this->Link_ID->ErrorNo();
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$this->Error = $this->Link_ID->ErrorMsg();
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if (! $this->Query_ID)
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{
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$this->halt("Invalid SQL: ".$Query_String, $line, $file);
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}
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return $this->Query_ID;
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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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return $this->query($Query_String,$line,$file,$offset,$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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if (!$this->Query_ID)
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{
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$this->halt('next_record called with no query pending.');
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return 0;
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}
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if ($this->Row) // first row is already fetched
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{
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$this->Query_ID->MoveNext();
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}
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++$this->Row;
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if ($this->Query_ID->EOF || !$this->Query_ID->RecordCount())
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{
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return False;
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}
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$this->Record = $this->Query_ID->fields;
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return True;
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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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if (!$this->Query_ID->Move($this->Row = $pos))
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{
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$this->halt("seek($pos) failed: resultset has " . $this->num_rows() . " rows");
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$this->Query_ID->Move( $this->num_rows() );
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$this->Row = $this->num_rows();
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return False;
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}
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return True;
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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 $this->Link_ID->BeginTrans();
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return $this->Link_ID->StartTrans();
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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 $this->Link_ID->CommitTrans();
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return $this->Link_ID->CompleteTrans();
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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 $this->Link_ID->RollbackTrans();
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return $this->Link_ID->FailTrans();
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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, $field)
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{
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$id = $this->Link_ID->Insert_ID();
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if ($id === False) // function not supported
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{
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echo "<p>db::get_last_insert_id(table='$table',field='$field') not yet implemented for db-type '$this->type'</p>\n";
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return -1;
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}
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if ($this->type != 'pgsql' || $id == -1)
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{
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return $id;
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}
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// pgsql code to transform the OID into the real id
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$id = $this->Link_ID->GetOne("SELECT $field FROM $table WHERE oid=$id");
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return $id !== False ? $id : -1;
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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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return $this->Link_ID->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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return $this->Query_ID->RecordCount();
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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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return $this->Query_ID->FieldCount();
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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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* This seems not to be used anywhere in eGroupWhere !!!
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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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echo "<p>db::nextid(sequence='$seq_name') not yet implemented</p>\n";
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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 = '', $file = '')
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{
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$this->Error = $this->Link_ID->ErrorMsg(); // need to be BEFORE unlock,
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$this->Errno = $this->Link_ID->ErrorNo(); // else we get its error or none
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if ($this->Link_ID) // only if we have a link, else infinite loop
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{
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$this->unlock(); /* Just in case there is a table currently locked */
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}
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if ($this->Halt_On_Error == "no")
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{
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return;
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}
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$this->haltmsg($msg);
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if ($file)
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{
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printf("<br><b>File:</b> %s",$file);
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}
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if ($line)
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{
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printf("<br><b>Line:</b> %s",$line);
|
|
}
|
|
printf("<br><b>Function:</b> %s\n",function_backtrace(2));
|
|
|
|
if ($this->Halt_On_Error != "report")
|
|
{
|
|
echo "<p><b>Session halted.</b>";
|
|
$GLOBALS['phpgw']->common->phpgw_exit(True);
|
|
}
|
|
}
|
|
|
|
function haltmsg($msg)
|
|
{
|
|
printf("<p><b>Database error:</b> %s<br>\n", $msg);
|
|
if ($this->Errno != "0" && $this->Error != "()")
|
|
{
|
|
printf("<b>$this->type Error</b>: %s (%s)<br>\n",$this->Errno,$this->Error);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get description of a table
|
|
*
|
|
* Beside the column-name all other data depends on the db-type !!!
|
|
*
|
|
* @param string $table name of table to describe
|
|
* @param bool $full optional, default False summary information, True full information
|
|
* @return array table meta data
|
|
*/
|
|
function metadata($table='',$full=false)
|
|
{
|
|
$columns = $this->Link_ID->MetaColumns($table);
|
|
//echo "<b>metadata</b>('$table')=<pre>\n".print_r($columns,True)."</pre>\n";
|
|
|
|
$metadata = array();
|
|
$i = 0;
|
|
foreach($columns as $column)
|
|
{
|
|
$metadata[$i] = $column;
|
|
$metadata[$i]['table'] = $table;
|
|
if ($full)
|
|
{
|
|
$metadata['meta'][$column['name']] = $i;
|
|
}
|
|
++$i;
|
|
}
|
|
if ($full)
|
|
{
|
|
$metadata['num_fields'] = $i;
|
|
}
|
|
return $metadata;
|
|
}
|
|
|
|
/**
|
|
* Get a list of table names in the current database
|
|
*
|
|
* @return array list of the tables
|
|
*/
|
|
function table_names()
|
|
{
|
|
$this->connect();
|
|
$result = array();
|
|
$tables = $this->Link_ID->MetaTables('TABLES');
|
|
if (is_array($tables))
|
|
{
|
|
foreach($tables as $table)
|
|
{
|
|
$result[] = array(
|
|
'table_name' => $table,
|
|
'tablespace_name' => $this->Database,
|
|
'database' => $this->Database
|
|
);
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Return a list of indexes in current database
|
|
*
|
|
* @return array list of indexes
|
|
*/
|
|
function index_names()
|
|
{
|
|
echo "<p>db::index_names() not yet implemented</p>\n";
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Create a new database
|
|
*
|
|
* @param string $adminname name of database administrator user (optional)
|
|
* @param string $adminpasswd password for the database administrator user (optional)
|
|
*/
|
|
function create_database($adminname = '', $adminpasswd = '')
|
|
{
|
|
echo "<p>db::create_database(user='$adminname',\$pw) not yet implemented</p>\n";
|
|
}
|
|
|
|
/**
|
|
* Implodes an array of column-value pairs for the use in sql-querys.
|
|
* All data is either run through addslashes() or intval().
|
|
*
|
|
* @author RalfBecker<at>outdoor-training.de
|
|
*
|
|
* @param string $glue in most cases this will be either ',' or ' AND ', depending you your query
|
|
* @param array $array column-value pairs
|
|
* @param boolean $use_key should a "$key=" prefix each value, typicaly set to False for insert querys
|
|
* @param array/boolean $only if set to an array only colums which are set (as data !!!) are written
|
|
* typicaly used to form a WHERE-clause from the primary keys
|
|
* @param array/boolean $column_definitions this can be set to the column-definitions-array
|
|
* of your table ($tables_baseline[$table]['fd'] of the setup/tables_current.inc.php file).
|
|
* If its set, the column-type-data determinates if intval() or addslashes is used.
|
|
*/
|
|
function column_data_implode($glue,$array,$use_key=True,$only=False,$column_definitions=False)
|
|
{
|
|
if (!$column_definitions)
|
|
{
|
|
$column_definitions = $this->column_definitions;
|
|
}
|
|
$pairs = array();
|
|
foreach($array as $key => $data)
|
|
{
|
|
if (!$only || in_array($key,$only))
|
|
{
|
|
$column_type = is_array($column_definitions) ? @$colum_definitions[$key]['type'] : False;
|
|
$values[] = ($use_key ? $key.'=' : '').
|
|
($column_type == 'int' || $colum_type == 'auto' ?
|
|
intval($data) : "'".$this->db_addslashes($data)."'");
|
|
}
|
|
}
|
|
return implode($glue,$values);
|
|
}
|
|
|
|
/**
|
|
* Sets the default column-definitions for use with column_data_implode()
|
|
*
|
|
* @author RalfBecker<at>outdoor-training.de
|
|
*
|
|
* @param array/boolean $column_definitions this can be set to the column-definitions-array
|
|
* of your table ($tables_baseline[$table]['fd'] of the setup/tables_current.inc.php file).
|
|
* If its set, the column-type-data determinates if intval() or addslashes is used.
|
|
*/
|
|
function set_column_definitions($column_definitions=False)
|
|
{
|
|
$this->column_definitions=$column_definitions;
|
|
}
|
|
|
|
/**
|
|
* reads the table-definitions from the app's setup/tables_current.inc.php file
|
|
*
|
|
* @author RalfBecker<at>outdoor-training.de
|
|
*
|
|
* @param string $app name of the app
|
|
* @param bool/string $table if set return only defintions of that table, else return all defintions
|
|
* @return the table-defintions or False if file not found
|
|
*/
|
|
function get_table_definitions($app,$table=False)
|
|
{
|
|
if (!isset($this->table_definitions[$app]))
|
|
{
|
|
$tables_current = PHPGW_INCLUDE_ROOT . "/$app/setup/tables_current.inc.php";
|
|
|
|
if (!@file_exists($tables_current))
|
|
{
|
|
return $this->table_definitions[$app] = False;
|
|
}
|
|
include($tables_current);
|
|
$this->table_definitions[$app] = $phpgw_baseline;
|
|
}
|
|
if ($table && (!$this->table_definitions[$app] || !isset($this->table_definitions[$app][$table])))
|
|
{
|
|
return False;
|
|
}
|
|
return $table ? $this->table_definitions[$app][$table] : $this->table_definitions[$app];
|
|
}
|
|
}
|
|
|
|
// REMOVE-IF-ONLY-ADODB
|
|
if (!@$GLOBALS['phpgw_info']['server']['use_adodb'])
|
|
{
|
|
include(PHPGW_API_INC.'/class.db_'.$GLOBALS['phpgw_info']['server']['db_type'].'.inc.php');
|
|
}
|
|
else
|
|
{
|
|
class db extends db_{}
|
|
}
|
|
?>
|