/**
* Sets collections.
*
* <p>Looks at merge actions when adding, so not all collections are added.
*
* @param collections list of data object collections or null
*/
public void setCollections(List<DataObjectCollection> collections) {
if (collections == null) {
this.collections = null;
return;
}
this.collections = Collections.unmodifiableList(collections);
collectionMap = new HashMap<String, DataObjectCollection>(collections.size());
removedCollectionNames = new ArrayList<String>();
for (DataObjectCollection coll : collections) {
// This is not quite correct - we really only want to not add the NO_OVERRIDE items if they
// are
// overriding something. However, at the point this is running, we don't know whether we will
// be embedding
// anything...
if (coll.getMergeAction() != MetadataMergeAction.REMOVE
&& coll.getMergeAction() != MetadataMergeAction.NO_OVERRIDE) {
collectionMap.put(coll.getName(), coll);
}
// since the attribute will still exist in the embedded metadata, we need to put a block in on
// the standard
// cascade
if (coll.getMergeAction() == MetadataMergeAction.REMOVE) {
removedCollectionNames.add(coll.getName());
}
}
}
/** {@inheritDoc} */
@Override
public DataObjectCollection getCollection(String collectionName) {
if (collectionName == null) {
return null;
}
DataObjectCollection collection = null;
// attempt to get it from the local attribute map (if any attributed defined locally)
if (collections != null) {
collection = collectionMap.get(collectionName);
}
// if we don't find one, but we have an embedded metadata object, check it
if (collection == null && embedded != null) {
collection = embedded.getCollection(collectionName);
// but, ensure it's not on the removed attribute list
if (collection != null
&& removedCollectionNames != null
&& removedCollectionNames.contains(collection.getName())) {
collection = null;
}
}
return collection;
}