org.apache.commons.collections.map

Interface CompositeMap.MapMutator

Enclosing class:

CompositeMap

public static interface CompositeMap.MapMutator

This interface allows definition for all of the indeterminate mutators in a CompositeMap, as well as providing a hook for callbacks on key collisions.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	put(CompositeMap map, java.util.Map[] composited, java.lang.Object key, java.lang.Object value) Called when the CompositeMap.put() method is invoked.
void	putAll(CompositeMap map, java.util.Map[] composited, java.util.Map mapToAdd) Called when the CompositeMap.putAll() method is invoked.
void	resolveCollision(CompositeMap composite, java.util.Map existing, java.util.Map added, java.util.Collection intersect) Called when adding a new Composited Map results in a key collision.

Method Detail

resolveCollision

void resolveCollision(CompositeMap composite,
                      java.util.Map existing,
                      java.util.Map added,
                      java.util.Collection intersect)

Called when adding a new Composited Map results in a key collision.

Parameters:

composite - the CompositeMap with the collision

existing - the Map already in the composite which contains the offending key

added - the Map being added

intersect - the intersection of the keysets of the existing and added maps

put

java.lang.Object put(CompositeMap map,
                     java.util.Map[] composited,
                     java.lang.Object key,
                     java.lang.Object value)

Called when the CompositeMap.put() method is invoked.

Parameters:

map - the CompositeMap which is being modified

composited - array of Maps in the CompositeMap being modified

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

Returns:

previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the map previously associated null with the specified key, if the implementation supports null values.

Throws:

java.lang.UnsupportedOperationException - if not defined

java.lang.ClassCastException - if the class of the specified key or value prevents it from being stored in this map.

java.lang.IllegalArgumentException - if some aspect of this key or value prevents it from being stored in this map.

java.lang.NullPointerException - this map does not permit null keys or values, and the specified key or value is null.

putAll

void putAll(CompositeMap map,
            java.util.Map[] composited,
            java.util.Map mapToAdd)

Called when the CompositeMap.putAll() method is invoked.

Parameters:

map - the CompositeMap which is being modified

composited - array of Maps in the CompositeMap being modified

mapToAdd - Mappings to be stored in this CompositeMap

Throws:

java.lang.UnsupportedOperationException - if not defined

java.lang.ClassCastException - if the class of the specified key or value prevents it from being stored in this map.

java.lang.IllegalArgumentException - if some aspect of this key or value prevents it from being stored in this map.

java.lang.NullPointerException - this map does not permit null keys or values, and the specified key or value is null.