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;
021
022import org.apache.isis.core.metamodel.facetapi.FacetHolder;
023import org.apache.isis.core.metamodel.facetapi.FeatureType;
024import org.apache.isis.core.metamodel.spec.ObjectSpecification;
025
026/**
027 * A {@link FacetHolder} that also has a {@link ObjectSpecification type}.
028 * 
029 * <p>
030 * Used to represent class members when building up the metamodel.
031 */
032public interface TypedHolder extends FacetHolder {
033
034    public FeatureType getFeatureType();
035
036    /**
037     * The type of a {@link FeatureType#PROPERTY property}, the referenced type
038     * of a {@link FeatureType#COLLECTION collection}, the return type of an
039     * {@link FeatureType#ACTION action} and the type of a
040     * {@link FeatureType#ACTION_PARAMETER action parameter}.
041     */
042    public Class<?> getType();
043
044    /**
045     * Type may not be known initially (eg {@link FeatureType#COLLECTION}s).
046     * 
047     * <p>
048     * For example, the accessor might return a raw type such as
049     * <tt>java.util.List</tt>, rather than a generic one such as
050     * <tt>java.util.List&lt;Customer&gt;</tt>.
051     */
052    public void setType(Class<?> type);
053
054}