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.interactions;
021
022import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023import org.apache.isis.core.metamodel.facetapi.Facet;
024
025/**
026 * Implemented by some of the {@link InteractionContext} subclasses, making it
027 * easier for facets to process multiple at the same time.
028 * 
029 * <p>
030 * Where this is used most often is for {@link PropertyModifyContext} and
031 * {@link ActionArgumentContext}, where a {@link Facet} (such as
032 * <tt>MandatoryFacet</tt> or <tt>MaxLengthFacet</tt>) would want to perform the
033 * same checks on the {@link #getProposed() proposed} value/argument.
034 */
035public interface ProposedHolder {
036
037    ObjectAdapter getProposed();
038}