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    
020    package org.apache.isis.core.progmodel.facets.properties.validate;
021    
022    import java.lang.reflect.Method;
023    import java.util.Collections;
024    import java.util.List;
025    
026    import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
027    import org.apache.isis.core.metamodel.adapter.util.AdapterInvokeUtils;
028    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
029    import org.apache.isis.core.metamodel.facets.ImperativeFacet;
030    
031    public class PropertyValidateFacetViaMethod extends PropertyValidateFacetAbstract implements ImperativeFacet {
032    
033        private final Method method;
034    
035        public PropertyValidateFacetViaMethod(final Method method, final FacetHolder holder) {
036            super(holder);
037            this.method = method;
038        }
039    
040        /**
041         * Returns a singleton list of the {@link Method} provided in the constructor.
042         */
043        @Override
044        public List<Method> getMethods() {
045            return Collections.singletonList(method);
046        }
047    
048        @Override
049        public boolean impliesResolve() {
050            return true;
051        }
052    
053        @Override
054        public boolean impliesObjectChanged() {
055            return false;
056        }
057    
058        @Override
059        public String invalidReason(final ObjectAdapter owningAdapter, final ObjectAdapter proposedAdapter) {
060            return (String) AdapterInvokeUtils.invoke(method, owningAdapter, proposedAdapter);
061        }
062    
063        @Override
064        protected String toStringValues() {
065            return "method=" + method;
066        }
067    
068    }