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<?php
/**
* Implementation of database access
*
* @category DMS
* @package LetoDMS_Core
* @license GPL 2
* @version @version@
* @author Uwe Steinmann <uwe@steinmann.cx>
* @copyright Copyright (C) 2002-2005 Markus Westphal, 2006-2008 Malcolm Cowe,
* 2010 Matteo Lucarelli, 2010 Uwe Steinmann
* @version Release: @package_version@
*/
/**
* Include the adodb database abstraction
*/
require_once "[[softpath]]/adodb/adodb.inc.php";
/** @noinspection PhpUndefinedClassInspection */
/**
* Class to represent the database access for the document management
*
* @category DMS
* @package LetoDMS_Core
* @author Markus Westphal, Malcolm Cowe, Matteo Lucarelli, Uwe Steinmann <uwe@steinmann.cx>
* @copyright Copyright (C) 2002-2005 Markus Westphal, 2006-2008 Malcolm Cowe, 2010 Matteo Lucarelli, 2010 Uwe Steinmann
* @version Release: @package_version@
*/
class LetoDMS_Core_DatabaseAccess {
var $_debug;
var $_driver;
var $_hostname;
var $_database;
var $_user;
var $_passw;
var $_conn;
var $_connected;
var $_ttreviewid;
var $_ttapproveid;
var $_ttstatid;
var $_ttcontentid;
var $_intransaction;
/*
Backup functions
*/
/**
* Return list of all database tables
*
* This function is used to retrieve a list of database tables for backup
*
* @return array list of table names
*/
function TableList() {
return $this->_conn->MetaTables("TABLES");
}
/**
* Constructor of LetoDMS_Core_DatabaseAccess
*
* Sets all database parameters but does not connect.
*
* @param string $driver the database type e.g. mysql, sqlite
* @param string $hostname host of database server
* @param string $user name of user having access to database
* @param string $passw password of user
* @param bool|string $database name of database
*/
function __construct($driver, $hostname, $user, $passw, $database = false) {
$this->_driver = $driver;
$this->_hostname = $hostname;
$this->_database = $database;
$this->_user = $user;
$this->_passw = $passw;
$this->_connected = false;
$this->_intransaction = 0;
// $tt*****id is a hack to ensure that we do not try to create the
// temporary table twice during a single connection. Can be fixed by
// using Views (MySQL 5.0 onward) instead of temporary tables.
// CREATE ... IF NOT EXISTS cannot be used because it has the
// unpleasant side-effect of performing the insert again even if the
// table already exists.
//
// See createTemporaryTable() method for implementation.
$this->_ttreviewid = false;
$this->_ttapproveid = false;
$this->_ttstatid = false;
$this->_ttcontentid = false;
$this->_debug = false;
}
/**
* Connect to database
*
* @return boolean true if connection could be established, otherwise false
*/
function connect() { /* {{{ */
$this->_conn = ADONewConnection($this->_driver);
if ($this->_database)
$this->_conn->Connect($this->_hostname, $this->_user, $this->_passw, $this->_database);
else
$this->_conn->Connect($this->_hostname, $this->_user, $this->_passw);
if (!$this->_conn)
return false;
$this->_conn->SetFetchMode(ADODB_FETCH_ASSOC);
$this->_conn->Execute('SET NAMES utf8');
$this->_connected = true;
return true;
} /* }}} */
/**
* Make sure a database connection exisits
*
* This function checks for a database connection. If it does not exists
* it will reconnect.
*
* @return boolean true if connection is established, otherwise false
*/
function ensureConnected() { /* {{{ */
if (!$this->_connected) return $this->connect();
else return true;
} /* }}} */
/**
* Sanitize String used in database operations
*
* @param string $text
* @return string sanitized string
*/
function qstr($text) { /* {{{ */
return $this->_conn->qstr($text);
} /* }}} */
/**
* Execute SQL query and return result
*
* Call this function only with sql query which return data records.
*
* @param string $queryStr sql query
* @return array|boolean data if query could be executed otherwise false
*/
function getResultArray($queryStr) { /* {{{ */
/** @noinspection PhpUnusedLocalVariableInspection */
$resArr = array();
$res = $this->_conn->Execute($queryStr);
if (!$res) {
if($this->_debug)
echo "error: ".$queryStr."<br />";
return false;
}
$resArr = $res->GetArray();
$res->Close();
return $resArr;
} /* }}} */
/**
* Execute SQL query
*
* Call this function only with sql query which do not return data records.
*
* @param string $queryStr sql query
* @return bool true if query could be executed otherwise false
* @internal param bool $silent not used anymore. This was used when this method
* still issued an error message
*/
function getResult($queryStr) { /* {{{ */
$res = $this->_conn->Execute($queryStr);
if(!$res) {
if($this->_debug)
echo "error: ".$queryStr."<br />";
}
return $res;
} /* }}} */
/**
* Return the id of the last instert record
*
* @return integer id used in last autoincrement
*/
function getInsertID() { /* {{{ */
return $this->_conn->Insert_ID();
} /* }}} */
function startTransaction() { /* {{{ */
if(!$this->_intransaction) {
$this->_conn->BeginTrans();
}
$this->_intransaction++;
} /* }}} */
function rollbackTransaction() { /* {{{ */
if($this->_intransaction == 1) {
$this->_conn->RollbackTrans();
}
$this->_intransaction--;
} /* }}} */
function commitTransaction() { /* {{{ */
if($this->_intransaction == 1) {
$this->_conn->CommitTrans();
}
$this->_intransaction--;
} /* }}} */
function getErrorMsg() { /* {{{ */
return $this->_conn->ErrorMsg();
} /* }}} */
function getErrorNo() { /* {{{ */
return $this->_conn->ErrorNo();
} /* }}} */
/**
* Create various temporary tables to speed up and simplify sql queries
* @param $tableName
* @param bool $override
* @return bool
*/
function createTemporaryTable($tableName, $override=false) { /* {{{ */
if (!strcasecmp($tableName, "ttreviewid")) {
$queryStr = "CREATE TEMPORARY TABLE IF NOT EXISTS `ttreviewid` (PRIMARY KEY (`reviewID`), INDEX (`maxLogID`)) ".
"SELECT `tblDocumentReviewLog`.`reviewID`, ".
"MAX(`tblDocumentReviewLog`.`reviewLogID`) AS `maxLogID` ".
"FROM `tblDocumentReviewLog` ".
"GROUP BY `tblDocumentReviewLog`.`reviewID` ".
"ORDER BY `tblDocumentReviewLog`.`reviewLogID`";
if (!$this->_ttreviewid) {
if (!$this->getResult($queryStr))
return false;
$this->_ttreviewid=true;
}
else {
if (is_bool($override) && $override) {
if (!$this->getResult("DELETE FROM `ttreviewid`"))
return false;
if (!$this->getResult($queryStr))
return false;
}
}
return $this->_ttreviewid;
}
else if (!strcasecmp($tableName, "ttapproveid")) {
$queryStr = "CREATE TEMPORARY TABLE IF NOT EXISTS `ttapproveid` (PRIMARY KEY (`approveID`), INDEX (`maxLogID`)) ".
"SELECT `tblDocumentApproveLog`.`approveID`, ".
"MAX(`tblDocumentApproveLog`.`approveLogID`) AS `maxLogID` ".
"FROM `tblDocumentApproveLog` ".
"GROUP BY `tblDocumentApproveLog`.`approveID` ".
"ORDER BY `tblDocumentApproveLog`.`approveLogID`";
if (!$this->_ttapproveid) {
if (!$this->getResult($queryStr))
return false;
$this->_ttapproveid=true;
}
else {
if (is_bool($override) && $override) {
if (!$this->getResult("DELETE FROM `ttapproveid`"))
return false;
if (!$this->getResult($queryStr))
return false;
}
}
return $this->_ttapproveid;
}
else if (!strcasecmp($tableName, "ttstatid")) {
$queryStr = "CREATE TEMPORARY TABLE IF NOT EXISTS `ttstatid` (PRIMARY KEY (`statusID`), INDEX (`maxLogID`)) ".
"SELECT `tblDocumentStatusLog`.`statusID`, ".
"MAX(`tblDocumentStatusLog`.`statusLogID`) AS `maxLogID` ".
"FROM `tblDocumentStatusLog` ".
"GROUP BY `tblDocumentStatusLog`.`statusID` ".
"ORDER BY `tblDocumentStatusLog`.`statusLogID`";
if (!$this->_ttstatid) {
if (!$this->getResult($queryStr))
return false;
$this->_ttstatid=true;
}
else {
if (is_bool($override) && $override) {
if (!$this->getResult("DELETE FROM `ttstatid`"))
return false;
if (!$this->getResult($queryStr))
return false;
}
}
return $this->_ttstatid;
}
else if (!strcasecmp($tableName, "ttcontentid")) {
$queryStr = "CREATE TEMPORARY TABLE `ttcontentid` (PRIMARY KEY (`document`), INDEX (`maxVersion`)) ".
"SELECT `tblDocumentContent`.`document`, ".
"MAX(`tblDocumentContent`.`version`) AS `maxVersion` ".
"FROM `tblDocumentContent` ".
"GROUP BY `tblDocumentContent`.`document` ".
"ORDER BY `tblDocumentContent`.`document`";
if (!$this->_ttcontentid) {
if (!$this->getResult($queryStr))
return false;
$this->_ttcontentid=true;
}
else {
if (is_bool($override) && $override) {
if (!$this->getResult("DELETE FROM `ttcontentid`"))
return false;
if (!$this->getResult($queryStr))
return false;
}
}
return $this->_ttcontentid;
}
return false;
} /* }}} */
}
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