001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *
010     *        http://www.apache.org/licenses/LICENSE-2.0
011     *
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License.
018     */
019    
020    package org.apache.isis.core.progmodel.facets.collections.aggregated;
021    
022    import org.apache.isis.core.metamodel.facetapi.FacetUtil;
023    import org.apache.isis.core.metamodel.facetapi.FeatureType;
024    import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
025    import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
026    import org.apache.isis.core.metamodel.facets.object.aggregated.AggregatedFacet;
027    import org.apache.isis.core.metamodel.progmodel.ProgrammingModel;
028    import org.apache.isis.core.metamodel.specloader.collectiontyperegistry.CollectionTypeRegistry;
029    import org.apache.isis.core.progmodel.facets.collections.collection.CollectionFacetFactory;
030    
031    /**
032     * All {@link CollectionTypeRegistry collection types} are intrinsically {@link AggregatedFacet aggregeted}.
033     * 
034     * 
035     * Must be registered in the {@link ProgrammingModel} after {@link CollectionFacetFactory}.
036     */
037    public class AggregatedIfCollectionFacetFactory extends FacetFactoryAbstract {
038    
039        public AggregatedIfCollectionFacetFactory() {
040            super(FeatureType.OBJECTS_ONLY);
041        }
042    
043        @Override
044        public void process(final ProcessClassContext processClassContaxt) {
045            if (!processClassContaxt.getFacetHolder().containsFacet(CollectionFacet.class)) {
046                return;
047            }
048            FacetUtil.addFacet(new AggregatedSinceCollection(processClassContaxt.getFacetHolder()));
049        }
050    
051    }