Interface ISearchOperation.ISearchOperationExecutor
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- All Known Implementing Classes:
CheckOperationExecutor
,ExtendOperationExecutor
,SingleValueExtendOperationExecutor
- Enclosing interface:
- ISearchOperation
public static interface ISearchOperation.ISearchOperationExecutor
- Since:
- 2.0
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description boolean
execute(MatchingFrame frame, ISearchContext context)
ISearchOperation
getOperation()
Returns the stateless operation this executor was initialized fromvoid
onBacktrack(MatchingFrame frame, ISearchContext context)
After the execution of the operation failed andexecute(MatchingFrame, ISearchContext)
returns false, the onBacktrack callback is evaluated.void
onInitialize(MatchingFrame frame, ISearchContext context)
During the execution of the corresponding plan, the onInitialize callback is evaluated before the execution of the operation may begin.
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Method Detail
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getOperation
ISearchOperation getOperation()
Returns the stateless operation this executor was initialized from
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onInitialize
void onInitialize(MatchingFrame frame, ISearchContext context)
During the execution of the corresponding plan, the onInitialize callback is evaluated before the execution of the operation may begin. Operations may use this method to initialize its internal data structures.- Throws:
ViatraQueryRuntimeException
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onBacktrack
void onBacktrack(MatchingFrame frame, ISearchContext context)
After the execution of the operation failed andexecute(MatchingFrame, ISearchContext)
returns false, the onBacktrack callback is evaluated. Operations may use this method to clean up any temporary structures, and make the operation ready for a new execution.- Throws:
ViatraQueryRuntimeException
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execute
boolean execute(MatchingFrame frame, ISearchContext context)
- Parameters:
frame
-context
-- Returns:
- true if successful, or false if backtracking needed
- Throws:
ViatraQueryRuntimeException
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