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 createInternalStream(String streamName, List<ColumnNameTypeValue> columns) {
StreamDefinition newStream = QueryFactory.createStreamDefinition().name(streamName);
for (ColumnNameTypeValue column : columns) {
newStream.attribute(column.getColumn(), getSiddhiType(column.getType()));
}
siddhiManager.defineStream(newStream);
streamStatusDao.createInferredStream(streamName, columns);
}
private static void populateAttributes(
org.wso2.siddhi.query.api.definition.StreamDefinition streamDefinition,
List<Attribute> attributes,
String prefix) {
if (attributes != null) {
for (Attribute attribute : attributes) {
org.wso2.siddhi.query.api.definition.Attribute siddhiAttribute =
EventProcessorUtil.convertToSiddhiAttribute(attribute, prefix);
streamDefinition.attribute(siddhiAttribute.getName(), siddhiAttribute.getType());
}
}
}