/**
* merges changes made to local storage on concurrent updates into the new record
*
* @param Tinebase_Record_Interface $_newRecord record from user data
* @param Tinebase_Record_Interface $_curRecord record from storage
* @param string $_model
* @param string $_backend
* @param string $_id
* @return Tinebase_Record_RecordSet with resolved concurrent updates (Tinebase_Model_ModificationLog records)
* @throws Tinebase_Timemachine_Exception_ConcurrencyConflict
*
* @deprecated this should be removed when all records have seq(uence)
*/
public function manageConcurrentUpdatesByTimestamp(Tinebase_Record_Interface $_newRecord, Tinebase_Record_Interface $_curRecord, $_model, $_backend, $_id)
{
if (Tinebase_Core::isLogLevel(Zend_Log::INFO)) {
Tinebase_Core::getLogger()->info(__METHOD__ . '::' . __LINE__ . ' Calling deprecated method. Model ' . $_model . ' should get a seq property.');
}
list($appName, $i, $modelName) = explode('_', $_model);
$resolved = new Tinebase_Record_RecordSet('Tinebase_Model_ModificationLog');
// handle concurrent updates on unmodified records
if (!$_newRecord->last_modified_time instanceof DateTime) {
if ($_curRecord->creation_time instanceof DateTime) {
$_newRecord->last_modified_time = clone $_curRecord->creation_time;
} else {
Tinebase_Core::getLogger()->warn(__METHOD__ . '::' . __LINE__ . ' Something went wrong! No creation_time was set in current record: ' . print_r($_curRecord->toArray(), TRUE));
return $resolved;
}
}
if ($_curRecord->last_modified_time instanceof DateTime && !$_curRecord->last_modified_time->equals($_newRecord->last_modified_time)) {
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " concurrent updates: current record last updated '" . $_curRecord->last_modified_time . "' where record to be updated was last updated '" . $_newRecord->last_modified_time . "'");
}
$loggedMods = $this->getModifications($appName, $_id, $_model, $_backend, $_newRecord->last_modified_time, $_curRecord->last_modified_time);
// effective modifications made to the record after current user got his record
$diffs = $this->computeDiff($loggedMods);
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " during the concurrent update, the following changes have been made: " . print_r($diffs->toArray(), true));
}
// we loop over the diffs! -> changes over fields which have no diff in storage are not in the loop!
foreach ($diffs as $diff) {
$newUserValue = isset($_newRecord[$diff->modified_attribute]) ? Tinebase_Helper::normalizeLineBreaks($_newRecord[$diff->modified_attribute]) : NULL;
if (isset($_newRecord[$diff->modified_attribute]) && $newUserValue == Tinebase_Helper::normalizeLineBreaks($diff->new_value)) {
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " User updated to same value for field '" . $diff->modified_attribute . "', nothing to do.");
}
$resolved->addRecord($diff);
} elseif (!isset($_newRecord[$diff->modified_attribute]) || $newUserValue == Tinebase_Helper::normalizeLineBreaks($diff->old_value)) {
if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . " Merge current value into update data, as it was not changed in update request.");
}
$_newRecord[$diff->modified_attribute] = $diff->new_value;
$resolved->addRecord($diff);
} else {
Tinebase_Core::getLogger()->err(__METHOD__ . '::' . __LINE__ . " Non resolvable conflict for field '" . $diff->modified_attribute . "'!");
throw new Tinebase_Timemachine_Exception_ConcurrencyConflict('concurrency conflict!');
}
}
}
return $resolved;
}
