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.progmodel.facets.properties.modify;
021
022import java.lang.reflect.Method;
023
024import org.apache.isis.core.commons.lang.StringExtensions;
025import org.apache.isis.core.metamodel.facetapi.FacetHolder;
026import org.apache.isis.core.metamodel.facetapi.FacetUtil;
027import org.apache.isis.core.metamodel.facetapi.FeatureType;
028import org.apache.isis.core.metamodel.methodutils.MethodScope;
029import org.apache.isis.core.progmodel.facets.MethodFinderUtils;
030import org.apache.isis.core.progmodel.facets.MethodPrefixBasedFacetFactoryAbstract;
031import org.apache.isis.core.progmodel.facets.MethodPrefixConstants;
032
033public class PropertyModifyFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
034
035    private static final String[] PREFIXES = { MethodPrefixConstants.MODIFY_PREFIX };
036
037    public PropertyModifyFacetFactory() {
038        super(FeatureType.PROPERTIES_ONLY, OrphanValidation.VALIDATE, 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 = StringExtensions.asJavaBaseName(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 = MethodFinderUtils.findMethod(cls, MethodScope.OBJECT, MethodPrefixConstants.MODIFY_PREFIX + capitalizedName, void.class, paramTypes);
057
058        if (modifyMethod == null) {
059            return;
060        }
061        processMethodContext.removeMethod(modifyMethod);
062
063        final FacetHolder property = processMethodContext.getFacetHolder();
064        FacetUtil.addFacet(new PropertySetterFacetViaModifyMethod(modifyMethod, property));
065    }
066
067}