net.shibboleth.metadata
Class DeduplicatingItemIdMergeStrategy

java.lang.Object
  net.shibboleth.metadata.DeduplicatingItemIdMergeStrategy

All Implemented Interfaces:

CollectionMergeStrategy

public class DeduplicatingItemIdMergeStrategy
extends Object
implements CollectionMergeStrategy

A merge strategy that adds source items to the target collection if none of the Items in the target collection have the same ItemId as source item. If the source item does not contain a ItemId it is always added to the target collection.

Constructor Summary

DeduplicatingItemIdMergeStrategy()

Method Summary

private void	merge(HashSet<ItemId> presentItemIds, Collection<Item<?>> target, Collection<Item<?>> sourceItems) Adds source items to the target collection if none of the Items in the target collection have the same ItemId as source item.
void	mergeCollection(Collection<Item<?>> target, Collection<Item<?>>... sources) Merges the results of each child pipeline in to the collection of Item given to this stage.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeduplicatingItemIdMergeStrategy

public DeduplicatingItemIdMergeStrategy()

Method Detail

mergeCollection

public void mergeCollection(@Nonnull@NonnullElements
                            Collection<Item<?>> target,
                            @Nonnull@NonnullElements
                            Collection<Item<?>>... sources)

Merges the results of each child pipeline in to the collection of Item given to this stage.

Specified by:

mergeCollection in interface CollectionMergeStrategy

Parameters:

target - collection in to which all the Items should be merged, never null

sources - collections of Items to be merged in to the target, never null not containing any null elements

merge

private void merge(@Nonnull@NonnullElements
                   HashSet<ItemId> presentItemIds,
                   @Nonnull@NonnullElements
                   Collection<Item<?>> target,
                   @Nonnull@NonnullElements
                   Collection<Item<?>> sourceItems)

Adds source items to the target collection if none of the Items in the target collection have the same ItemId as source item. If the source item does not contain a ItemId it is always added to the target collection.

Parameters:

presentItemIds - IDs that are already present in the target collection

target - the collection to which items will be merged in to

sourceItems - the collection of items to be merged in to the target