public int enlargeStream(
String streamName, List<ColumnNameTypeValue> columns, Boolean raiseException)
throws ServiceException {
int addedColumns = 0;
StreamDefinition streamMetaData = siddhiManager.getStreamDefinition(streamName);
for (ColumnNameTypeValue columnNameTypeValue : columns) {
if (!SiddhiUtils.columnAlreadyExistsInStream(
columnNameTypeValue.getColumn(), streamMetaData)) {
addedColumns++;
// JPFM -- Updating the columns in streamStatusDao
streamStatusDao.addColumn(streamName, columnNameTypeValue);
streamMetaData.attribute(
columnNameTypeValue.getColumn(), getSiddhiType(columnNameTypeValue.getType()));
} else {
if (raiseException) {
throw new ServiceException(
String.format(
"Alter stream error, Column %s already " + "exists.",
columnNameTypeValue.getColumn()));
}
}
}
return addedColumns;
}
public void removeQuery(String queryId, String streamName) {
siddhiManager.removeQuery(queryId);
streamStatusDao.removeQuery(streamName, queryId);
for (Map.Entry<String, StreamStatusDTO> streamStatus : streamStatusDao.getAll().entrySet()) {
String temporalStreamName = streamStatus.getKey();
if (siddhiManager.getStreamDefinition(temporalStreamName) == null) {
this.dropStream(temporalStreamName);
}
}
}
public void send(String streamName, List<ColumnNameTypeValue> columns) throws ServiceException {
try {
siddhiManager
.getInputHandler(streamName)
.send(
SiddhiUtils.getOrderedValues(siddhiManager.getStreamDefinition(streamName), columns));
} catch (InterruptedException e) {
throw new ServiceException(
String.format("Error sending data to stream %s, column data: %s", streamName, columns),
e);
}
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
if (siddhiManager == null) {
init();
}
// Declaring output fileds for each exported stream ID
for (String streamId : exportedStreamIds) {
StreamDefinition streamDefinition = siddhiManager.getStreamDefinition(streamId);
if (streamDefinition == null) {
throw new RuntimeException("Cannot find exported stream - " + streamId);
}
List<String> list = new ArrayList<String>();
for (Attribute attribute : streamDefinition.getAttributeList()) {
list.add(attribute.getName());
}
Fields fields = new Fields(list);
declarer.declareStream(streamId, fields);
log.info("Declaring output field for stream -" + streamId);
}
}
