Class OpExecutor
java.lang.Object
org.apache.jena.sparql.engine.main.OpExecutor
- Direct Known Subclasses:
OpExecutorQuads
Turn an Op expression into an execution of QueryIterators.
Does not consider optimizing the algebra expression (that should happen
elsewhere). BGPs are still subject to StageBuilding during iterator
execution.
During execution, when a substitution into an algebra expression
happens (in other words, a streaming operation, index-join-like), there is a
call into the executor each time so it does not just happen once before a
query starts.
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Field Summary
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Method Summary
Modifier and TypeMethodDescriptionstatic QueryIterator
createRootQueryIterator
(ExecutionContext execCxt) executeOp
(Op op, QueryIterator input)
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Field Details
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stdFactory
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Method Details
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executeOp
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createRootQueryIterator
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