Class CachingDistance
java.lang.Object
org.eclipse.emf.compare.match.eobject.CachingDistance
- All Implemented Interfaces:
ProximityEObjectMatcher.DistanceFunction
This class wraps a DistanceFunction and cache its result. Any call to distance(a,b) will be cached and the
same value will be returned to distance(b,a).
- Since:
- 3.1
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Constructor Summary
ConstructorDescriptionCreate a new caching distance. -
Method Summary
Modifier and TypeMethodDescriptionboolean
areIdentic
(Comparison inProgress, EObject a, EObject b) Check that two objects are equals from the distance function point of view (distance should be 0) You should prefer this method when you just want to check objects are not equals enabling the distance to stop sooner.double
distance
(Comparison inProgress, EObject a, EObject b) Return the distance between two EObjects.
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Constructor Details
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CachingDistance
Create a new caching distance.- Parameters:
wrapped
- actual distance function to cache results from.
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Method Details
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distance
Return the distance between two EObjects. When the two objects should considered as completely different the implementation is expected to return Double.MAX_VALUE.- Specified by:
distance
in interfaceProximityEObjectMatcher.DistanceFunction
- Parameters:
inProgress
- the comparison being processed right now. This might be used for the distance to retrieve other matches for instance.a
- first object.b
- second object.- Returns:
- the distance between the two EObjects or Double.MAX_VALUE when the objects are considered too different to be the same.
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areIdentic
Check that two objects are equals from the distance function point of view (distance should be 0) You should prefer this method when you just want to check objects are not equals enabling the distance to stop sooner.- Specified by:
areIdentic
in interfaceProximityEObjectMatcher.DistanceFunction
- Parameters:
inProgress
- the comparison being processed right now. This might be used for the distance to retrieve other matches for instance.a
- first object.b
- second object.- Returns:
- true of the two objects are equals, false otherwise.
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