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.object.callbacks.remove;
021
022 import java.lang.reflect.Method;
023 import java.util.ArrayList;
024 import java.util.List;
025
026 import org.apache.isis.core.metamodel.facetapi.Facet;
027 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
028 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
029 import org.apache.isis.core.metamodel.facetapi.FeatureType;
030 import org.apache.isis.core.metamodel.facets.object.callbacks.RemovedCallbackFacet;
031 import org.apache.isis.core.metamodel.facets.object.callbacks.RemovingCallbackFacet;
032 import org.apache.isis.core.metamodel.methodutils.MethodScope;
033 import org.apache.isis.core.progmodel.facets.MethodFinderUtils;
034 import org.apache.isis.core.progmodel.facets.MethodPrefixBasedFacetFactoryAbstract;
035 import org.apache.isis.core.progmodel.facets.MethodPrefixConstants;
036
037 public class RemoveCallbackViaDeleteMethodFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
038
039 private static final String[] PREFIXES = { MethodPrefixConstants.DELETED_PREFIX,
040 MethodPrefixConstants.DELETING_PREFIX, };
041
042 public RemoveCallbackViaDeleteMethodFacetFactory() {
043 super(FeatureType.OBJECTS_ONLY, PREFIXES);
044 }
045
046 @Override
047 public void process(final ProcessClassContext processClassContext) {
048 final Class<?> cls = processClassContext.getCls();
049 final FacetHolder holder = processClassContext.getFacetHolder();
050
051 final List<Facet> facets = new ArrayList<Facet>();
052 final List<Method> methods = new ArrayList<Method>();
053
054 Method method = null;
055 method =
056 MethodFinderUtils.findMethod(cls, MethodScope.OBJECT, MethodPrefixConstants.DELETING_PREFIX, void.class,
057 NO_PARAMETERS_TYPES);
058 if (method != null) {
059 methods.add(method);
060 final RemovingCallbackFacet facet = holder.getFacet(RemovingCallbackFacet.class);
061 if (facet == null) {
062 facets.add(new RemovingCallbackFacetViaMethod(method, holder));
063 } else {
064 facet.addMethod(method);
065 }
066 }
067
068 method =
069 MethodFinderUtils.findMethod(cls, MethodScope.OBJECT, MethodPrefixConstants.DELETED_PREFIX, void.class,
070 NO_PARAMETERS_TYPES);
071 if (method != null) {
072 methods.add(method);
073 final RemovedCallbackFacet facet = holder.getFacet(RemovedCallbackFacet.class);
074 if (facet == null) {
075 facets.add(new RemovedCallbackFacetViaMethod(method, holder));
076 } else {
077 facet.addMethod(method);
078 }
079 }
080
081 processClassContext.removeMethods(methods);
082 FacetUtil.addFacets(facets);
083 }
084
085 }