Package org.eclipse.emf.compare.match.eobject

Class DefaultWeightProvider

java.lang.Object

org.eclipse.emf.compare.match.eobject.AbstractWeightProvider

org.eclipse.emf.compare.match.eobject.DefaultWeightProvider

All Implemented Interfaces:

WeightProvider

Direct Known Subclasses:

EcoreWeightProvider

public class DefaultWeightProvider
extends AbstractWeightProvider

The default implementation of WeightProvider applicable to all objects.

Since:

3.1.0

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.emf.compare.match.eobject.WeightProvider

WeightProvider.Descriptor

Field Summary

Fields

Modifier and Type	Field	Description
protected int	attributeChangeCoef	Weight coefficient of a change on an attribute.
protected int	referenceChangeCoef	Weight coefficient of a change on a reference.
protected java.util.Map<EStructuralFeature,java.lang.Integer>	weights	The list of specific weight to apply on specific Features.

Fields inherited from class org.eclipse.emf.compare.match.eobject.AbstractWeightProvider

MAJOR, MASSIVE, NORMAL, SIGNIFICANT, SMALL, UNLIKELY_TO_MATCH

Constructor Summary

Constructors

Constructor	Description
DefaultWeightProvider()	Create the weight provider.

Method Summary

Modifier and Type	Method	Description
int	getContainingFeatureWeight(EObject a)	Return the weight associated with the fact some Object has changed it's containing reference.
int	getParentWeight(EObject a)	Return the weight associated with the fact some Object has changed it's container.
int	getWeight(EStructuralFeature feature)	Return the weight for the given feature.
protected boolean	irrelevant(EStructuralFeature feat)	return true i the feature is irrelevant for the comparison.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

weights

protected java.util.Map<EStructuralFeature,java.lang.Integer> weights

The list of specific weight to apply on specific Features.

referenceChangeCoef

protected int referenceChangeCoef

Weight coefficient of a change on a reference.

attributeChangeCoef

protected int attributeChangeCoef

Weight coefficient of a change on an attribute.

Constructor Details

DefaultWeightProvider

public DefaultWeightProvider()

Create the weight provider.

Method Details

getWeight

public int getWeight(EStructuralFeature feature)

Return the weight for the given feature.

Parameters:

feature - any EStructuralFeature.

Returns:

the weight for the given feature. 0 meaning no effects.

getParentWeight

public int getParentWeight(EObject a)

Return the weight associated with the fact some Object has changed it's container.

Parameters:

a - any instance.

Returns:

a weight representing the importance of the change of container to compute matches.

getContainingFeatureWeight

public int getContainingFeatureWeight(EObject a)

Return the weight associated with the fact some Object has changed it's containing reference.

Parameters:

a - any instance.

Returns:

a weight representing the importance of the change of containing reference to compute matches.

irrelevant

protected boolean irrelevant(EStructuralFeature feat)

return true i the feature is irrelevant for the comparison.

Parameters:

feat - any feature.

Returns:

true i the feature is irrelevant for the comparison.