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;
021    
022    import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023    import org.apache.isis.core.metamodel.adapter.map.AdapterMap;
024    import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
025    import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacetUtils;
026    import org.apache.isis.core.metamodel.spec.ObjectSpecification;
027    
028    public final class CollectionUtils {
029        private CollectionUtils() {
030        }
031    
032        public static Object[] getCollectionAsObjectArray(final Object option, final ObjectSpecification spec,
033            final AdapterMap adapterMap) {
034            final ObjectAdapter collection = adapterMap.adapterFor(option);
035            final CollectionFacet facet = CollectionFacetUtils.getCollectionFacetFromSpec(collection);
036            final Object[] optionArray = new Object[facet.size(collection)];
037            int j = 0;
038            for (final ObjectAdapter nextElement : facet.iterable(collection)) {
039                optionArray[j++] = nextElement.getObject();
040            }
041            return optionArray;
042        }
043    
044    }