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
020package org.apache.isis.core.progmodel.facets;
021
022import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023import org.apache.isis.core.metamodel.adapter.mgr.AdapterManager;
024import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
025import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacetUtils;
026import org.apache.isis.core.metamodel.spec.ObjectSpecification;
027
028public final class CollectionUtils {
029    private CollectionUtils() {
030    }
031
032    public static Object[] getCollectionAsObjectArray(final Object option, final ObjectSpecification spec, final AdapterManager adapterMap) {
033        final ObjectAdapter collection = adapterMap.adapterFor(option);
034        final CollectionFacet facet = CollectionFacetUtils.getCollectionFacetFromSpec(collection);
035        final Object[] optionArray = new Object[facet.size(collection)];
036        int j = 0;
037        for (final ObjectAdapter nextElement : facet.iterable(collection)) {
038            optionArray[j++] = nextElement != null? nextElement.getObject(): null;
039        }
040        return optionArray;
041    }
042
043}