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.modify;
021    
022    import java.lang.reflect.Method;
023    
024    import org.apache.isis.core.commons.lang.NameUtils;
025    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
026    import org.apache.isis.core.metamodel.facetapi.FacetUtil;
027    import org.apache.isis.core.metamodel.facetapi.FeatureType;
028    import org.apache.isis.core.metamodel.methodutils.MethodScope;
029    import org.apache.isis.core.progmodel.facets.MethodFinderUtils;
030    import org.apache.isis.core.progmodel.facets.MethodPrefixBasedFacetFactoryAbstract;
031    import org.apache.isis.core.progmodel.facets.MethodPrefixConstants;
032    
033    public class PropertyModifyFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
034    
035        private static final String[] PREFIXES = { MethodPrefixConstants.MODIFY_PREFIX };
036    
037        public PropertyModifyFacetFactory() {
038            super(FeatureType.PROPERTIES_ONLY, PREFIXES);
039        }
040    
041        @Override
042        public void process(final ProcessMethodContext processMethodContext) {
043    
044            attachPropertyModifyFacetIfModifyMethodIsFound(processMethodContext);
045        }
046    
047        private void attachPropertyModifyFacetIfModifyMethodIsFound(final ProcessMethodContext processMethodContext) {
048    
049            final Method getMethod = processMethodContext.getMethod();
050            final String capitalizedName = NameUtils.javaBaseName(getMethod.getName());
051    
052            final Class<?> returnType = getMethod.getReturnType();
053            final Class<?>[] paramTypes = new Class[] { returnType };
054    
055            final Class<?> cls = processMethodContext.getCls();
056            final Method modifyMethod =
057                MethodFinderUtils.findMethod(cls, MethodScope.OBJECT,
058                    MethodPrefixConstants.MODIFY_PREFIX + capitalizedName, void.class, paramTypes);
059    
060            if (modifyMethod == null) {
061                return;
062            }
063            processMethodContext.removeMethod(modifyMethod);
064    
065            final FacetHolder property = processMethodContext.getFacetHolder();
066            FacetUtil.addFacet(new PropertySetterFacetViaModifyMethod(modifyMethod, property));
067        }
068    
069    }