mirror of https://github.com/friendica/friendica
206 lines
4.0 KiB
PHP
206 lines
4.0 KiB
PHP
<?php
|
|
|
|
namespace DDDBL;
|
|
|
|
/**
|
|
* @returns (PDO) - reference to PDO object
|
|
* @returns (boolean) false, if there is no connection to the database
|
|
*
|
|
* if there is a connection to the database,
|
|
* the PDO object is returned otherwise false
|
|
*
|
|
**/
|
|
function getDB() {
|
|
|
|
if(!isConnected())
|
|
return false;
|
|
|
|
$objDB = getDBDataObject();
|
|
|
|
return $objDB->get('PDO');
|
|
|
|
}
|
|
|
|
/**
|
|
* @returns (boolean) true, if connection exists or is established
|
|
* @returns (boolean) false, if connection could not be established
|
|
*
|
|
* if no connection to the database exists, establishe one.
|
|
*
|
|
**/
|
|
function connect() {
|
|
|
|
if(isConnected())
|
|
return true;
|
|
|
|
$objDB = getDBDataObject();
|
|
|
|
try {
|
|
$objPDO = new \PDO($objDB->get('CONNECTION'),
|
|
$objDB->get('USER'),
|
|
$objDB->get('PASS'));
|
|
} catch (\Exception $objException) {
|
|
return false;
|
|
}
|
|
|
|
$objDB->update(array('PDO' => $objPDO));
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
/**
|
|
* disconnect from the database
|
|
*
|
|
**/
|
|
function disconnect() {
|
|
|
|
$objDB = getDBDataObject();
|
|
|
|
$objPDO = $objDB->get('PDO');
|
|
$objPDO = null;
|
|
|
|
$objDB->delete('PDO');
|
|
|
|
}
|
|
|
|
/**
|
|
* check if a connection to the database is established
|
|
*
|
|
**/
|
|
function isConnected() {
|
|
|
|
$objDB = getDBDataObject();
|
|
|
|
if(!$objDB->exists('PDO'))
|
|
return false;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
/**
|
|
* @returns (boolean) true, if transaction started
|
|
* @returns (boolean) false, if transaction could not be started
|
|
* @returns (boolean) false, if no connection to database exists
|
|
*
|
|
* start a transaction
|
|
*
|
|
**/
|
|
function startTransaction() {
|
|
|
|
return mapMethod('beginTransaction');
|
|
|
|
}
|
|
|
|
/**
|
|
* @returns (boolean) true, if there is an active transaction
|
|
* @returns (boolean) false, if there is no active transaction
|
|
* @returns (boolean) false, if no connection to database exists
|
|
*
|
|
* check if there is an active transaction
|
|
*
|
|
**/
|
|
function inTransaction() {
|
|
|
|
return mapMethod('inTransaction');
|
|
|
|
}
|
|
|
|
/**
|
|
* @returns (boolean) true, if rollback was successfull
|
|
* @returns (boolean) false, if rollback was not successfull
|
|
* @returns (boolean) false, if no connection to database exists
|
|
*
|
|
* perform a rollback of the active transaction
|
|
*
|
|
**/
|
|
function rollback() {
|
|
|
|
return mapMethod('rollback');
|
|
|
|
}
|
|
|
|
/**
|
|
* @returns (boolean) true, if commit was successfull
|
|
* @returns (boolean) false, if commit was not successfull
|
|
* @returns (boolean) false, if no connection to database exists
|
|
*
|
|
* commit the active transaction
|
|
*
|
|
**/
|
|
function commit() {
|
|
|
|
return mapMethod('commit');
|
|
|
|
}
|
|
|
|
/**
|
|
* @returns (array) - list of error-information
|
|
*
|
|
* get information about an error
|
|
*
|
|
**/
|
|
function getErrorInfo() {
|
|
|
|
return mapMethod('errorInfo');
|
|
|
|
}
|
|
|
|
/**
|
|
* change the active database-connection. all db-functions
|
|
* are performed at the new connection.
|
|
*
|
|
* ATTENTION: the old connection is *not* closed!
|
|
*
|
|
**/
|
|
function changeDB($strIdentifier) {
|
|
|
|
$objDataObjectPool = new DataObjectPool('Database-Definition');
|
|
|
|
$objNewDB = $objDataObjectPool->get($strIdentifier);
|
|
|
|
$objDataObjectPool->delete('DEFAULT');
|
|
$objDataObjectPool->add('DEFAULT', $objNewDB->getAll());
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* @returns (DataObject) - reference to the DataObject of default connection
|
|
*
|
|
* returns the DataObject of the default connection.
|
|
*
|
|
**/
|
|
function getDBDataObject() {
|
|
|
|
$objDataObjectPool = new DataObjectPool('Database-Definition');
|
|
return $objDataObjectPool->get('DEFAULT');
|
|
|
|
}
|
|
|
|
/**
|
|
* @throws UnexpectedParameterTypeException - if the given parameter is not a string
|
|
*
|
|
* @returns (boolean) false, if no connection is established
|
|
*
|
|
* check if a connection to the database is established. if so,
|
|
* the given parameter is used, as method to call at the
|
|
* PDO object. the result of the call is returned
|
|
*
|
|
**/
|
|
function mapMethod($strMethod) {
|
|
|
|
if(!is_string($strMethod))
|
|
throw new UnexpectedParameterTypeException('string', $strMethod);
|
|
|
|
if(!isConnected())
|
|
return false;
|
|
|
|
$objDB = getDBDataObject();
|
|
|
|
$objPDO = $objDB->get('PDO');
|
|
|
|
return $objPDO->$strMethod();
|
|
|
|
} |