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SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
Extracts new facts from existing facts.
Tuple
,
Declaration
,
Extraction
Method Summary | |
java.lang.Object |
extractFact(Tuple tuple)
Extract a new fact from the incoming Tuple |
Declaration[] |
getRequiredTupleMembers()
Retrieve the array of Declaration s required
by this Extractor to perform its duties. |
Method Detail |
public Declaration[] getRequiredTupleMembers()
Declaration
s required
by this Extractor
to perform its duties.
Declarations
expected
on incoming Tuple
s.public java.lang.Object extractFact(Tuple tuple) throws ExtractionException
Tuple
tuple
- The source data tuple.
ExtractionException
- if an error occurs during
fact extraction activities.
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