protected function prepareDatasetRecords4Submission(DataControllerCallContext $callcontext, $request) {
$preparedRecords = NULL;
$datasetName = $request->getDatasetName();
$isOperationInsert = $request->getOperationName() == DatasetInsertRequest::$OPERATION__INSERT;
$isOperationDelete = $request->getOperationName() == DatasetDeleteRequest::$OPERATION__DELETE;
$recordMetaData = $request->recordsHolder->recordMetaData;
$keyColumn = $recordMetaData->findKeyColumn();
$keyColumnName = isset($keyColumn) ? $keyColumn->name : NULL;
$documentIds = NULL;
if ($request->recordsHolder instanceof IndexedRecordsHolder) {
$columnCount = $recordMetaData->getColumnCount();
foreach ($request->recordsHolder->records as $record) {
$preparedRecord = NULL;
for ($i = 0; $i < $columnCount; $i++) {
$column = $recordMetaData->columns[$i];
$columnValue = $record[$i];
if (isset($columnValue)) {
$preparedRecord->{$column->name} = $columnValue;
}
}
// preparing document identifier
if (!isset($preparedRecord->_id) && isset($keyColumnName)) {
$preparedRecord->_id = $preparedRecord->$keyColumnName;
}
// collecting document identifiers to load last revisions
if (!$isOperationInsert) {
if (isset($preparedRecord->_id)) {
$documentIds[] = $preparedRecord->_id;
}
else {
LogHelper::log_error($preparedRecord);
throw new IllegalArgumentException(t('Could not find document identifier for the document'));
}
}
$preparedRecords[] = $preparedRecord;
}
}
else {
foreach ($request->recordsHolder->records as $record) {
// preparing document identifier
if (!isset($record->_id) && isset($keyColumnName)) {
$record->_id = $record->$keyColumnName;
}
// collecting document identifiers to load last revisions
if (!$isOperationInsert) {
if (isset($record->_id)) {
$documentIds[] = $record->_id;
}
else {
LogHelper::log_error($record);
throw new IllegalArgumentException(t('Could not find document identifier for the document'));
}
}
$preparedRecords[] = $record;
}
}
if (!$isOperationInsert) {
// loading previous revisions
$revisions = NULL;
if (isset($documentIds)) {
$revisionRequest = new DatasetQueryRequest($datasetName);
$revisionRequest->addQueryValues(0, '_id', $documentIds);
$revisionResponse = $this->queryDataset($callcontext, $revisionRequest, NULL);
if (isset($revisionResponse)) {
foreach ($revisionResponse as $revision) {
$revisions[$revision->_id] = $revision->_rev;
}
}
}
foreach ($preparedRecords as $record) {
// setting revision
if ((isset($revisions) && isset($revisions[$record->_id]))) {
$record->_rev = $revisions[$record->_id];
}
else {
throw new IllegalArgumentException(t(
'Could not find last revision for the document: @id',
array('@id' => $record->_id)));
}
if ($isOperationDelete) {
$record->_deleted = TRUE;
}
}
}
return $preparedRecords;
}
