package backtype.storm.topology;
import backtype.storm.generated.StreamInfo;
import backtype.storm.tuple.Fields;
import backtype.storm.utils.Utils;
import java.util.HashMap;
import java.util.Map;
public class OutputFieldsGetter implements OutputFieldsDeclarer {
private Map<String, StreamInfo> _fields = new HashMap<String, StreamInfo>();
public void declare(Fields fields) {
declare(false, fields);
}
public void declare(boolean direct, Fields fields) {
declareStream(Utils.DEFAULT_STREAM_ID, direct, fields);
}
public void declareStream(String streamId, Fields fields) {
declareStream(streamId, false, fields);
}
public void declareStream(String streamId, boolean direct, Fields fields) {
if(_fields.containsKey(streamId)) {
throw new IllegalArgumentException("Fields for " + streamId + " already set");
}
_fields.put(streamId, new StreamInfo(fields.toList(), direct));
}
public Map<String, StreamInfo> getFieldsDeclaration() {
return _fields;
}
}