Package org.apache.storm.topology
Interface IComponent
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- All Superinterfaces:
Serializable
- All Known Subinterfaces:
IBasicBolt
,IRichBolt
,IRichSpout
,IWindowedBolt
- All Known Implementing Classes:
BaseBasicBolt
,BaseComponent
,BaseRichBolt
,BaseRichSpout
,BaseTickTupleAwareRichBolt
,BaseWindowedBolt
,BasicBoltExecutor
,TestWordSpout
public interface IComponent extends Serializable
Common methods for all possible components in a topology. This interface is used when defining topologies using the Java API.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
declareOutputFields(OutputFieldsDeclarer declarer)
Declare the output schema for all the streams of this topology.Map<String,Object>
getComponentConfiguration()
Declare configuration specific to this component.
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Method Detail
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declareOutputFields
void declareOutputFields(OutputFieldsDeclarer declarer)
Declare the output schema for all the streams of this topology.- Parameters:
declarer
- this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream
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getComponentConfiguration
Map<String,Object> getComponentConfiguration()
Declare configuration specific to this component. Only a subset of the "topology.*" configs can be overridden. The component configuration can be further overridden when constructing the topology usingTopologyBuilder
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