Interface ChunkHandler<T>
- Type Parameters:
T
- the type of the items to be processed (it is recommended to use a Memento like a primary key)
- All Known Implementing Classes:
ChunkProcessorChunkHandler
public interface ChunkHandler<T>
Interface for a remote worker in the Remote Chunking pattern. A request comes from a
manager process containing some items to be processed. Once the items are done with a
response needs to be generated containing a summary of the result.
- Author:
- Dave Syer
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Method Summary
Modifier and TypeMethodDescriptionhandleChunk
(ChunkRequest<T> chunk) Handle the chunk, processing all the items and returning a response summarising the result.
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Method Details
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handleChunk
Handle the chunk, processing all the items and returning a response summarising the result. If the result is a failure then the response should say so. The handler only throws an exception if it needs to roll back a transaction and knows that the request will be re-delivered (if not to the same handler then to one processing the same Step).- Parameters:
chunk
- a request containing the chunk to process- Returns:
- a response summarising the result
- Throws:
Exception
- if the handler needs to roll back a transaction and have the chunk re-delivered
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