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.properties.businesskey;
021
022import org.apache.isis.core.metamodel.facets.SingleStringValueFacet;
023
024/**
025 * Indicates that this property is part of the business key.
026 * 
027 * <p>
028 * In the standard Apache Isis Programming Model, corresponds to annotating the
029 * property with the <tt>@BusinessKey</tt> annotation.
030 * 
031 * <p>
032 * TODO: not yet implemented by the framework or any viewer.
033 */
034public interface BusinessKeyFacet extends SingleStringValueFacet {
035
036}