Package org.apache.commons.collections4.set

Interface CompositeSet.SetMutator<E>

All Superinterfaces:

java.io.Serializable

Enclosing class:

CompositeSet<E>

public static interface CompositeSet.SetMutator<E>
extends java.io.Serializable

Define callbacks for mutation operations.

Method Summary

Modifier and Type	Method	Description
boolean	add(CompositeSet<E> composite, java.util.List<java.util.Set<E>> sets, E obj)	Called when an object is to be added to the composite.
boolean	addAll(CompositeSet<E> composite, java.util.List<java.util.Set<E>> sets, java.util.Collection<? extends E> coll)	Called when a collection is to be added to the composite.
void	resolveCollision(CompositeSet<E> comp, java.util.Set<E> existing, java.util.Set<E> added, java.util.Collection<E> intersects)	Called when a Set is added to the CompositeSet and there is a collision between existing and added sets.

Method Detail

add

boolean add(CompositeSet<E> composite,
            java.util.List<java.util.Set<E>> sets,
            E obj)

Called when an object is to be added to the composite.

Parameters:

composite - the CompositeSet being changed

sets - all of the Set instances in this CompositeSet

obj - the object being added

Returns:

true if the collection is changed

Throws:

java.lang.UnsupportedOperationException - if add is unsupported

java.lang.ClassCastException - if the object cannot be added due to its type

java.lang.NullPointerException - if the object cannot be added because its null

java.lang.IllegalArgumentException - if the object cannot be added

addAll

boolean addAll(CompositeSet<E> composite,
               java.util.List<java.util.Set<E>> sets,
               java.util.Collection<? extends E> coll)

Called when a collection is to be added to the composite.

Parameters:

composite - the CompositeSet being changed

sets - all of the Set instances in this CompositeSet

coll - the collection being added

Returns:

true if the collection is changed

Throws:

java.lang.UnsupportedOperationException - if add is unsupported

java.lang.ClassCastException - if the object cannot be added due to its type

java.lang.NullPointerException - if the object cannot be added because its null

java.lang.IllegalArgumentException - if the object cannot be added

resolveCollision

void resolveCollision(CompositeSet<E> comp,
                      java.util.Set<E> existing,
                      java.util.Set<E> added,
                      java.util.Collection<E> intersects)

Called when a Set is added to the CompositeSet and there is a collision between existing and added sets.

If added and existing still have any intersects after this method returns an IllegalArgumentException will be thrown.

Parameters:

comp - the CompositeSet being modified

existing - the Set already existing in the composite

added - the Set being added to the composite

intersects - the intersection of the existing and added sets