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.metamodel.facets.choices;
021
022import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023import org.apache.isis.core.metamodel.facetapi.Facet;
024import org.apache.isis.core.metamodel.spec.ObjectSpecification;
025
026public interface ChoicesFacet extends Facet {
027
028    /**
029     * Gets a set of choices for this object.
030     */
031    public Object[] getChoices(ObjectAdapter adapter);
032
033    
034    
035    public static class Util {
036
037        private Util() {
038        }
039
040        public static boolean hasChoices(final ObjectSpecification specification) {
041            return specification.getFacet(ChoicesFacet.class) != null;
042        }
043
044    }
045
046}