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.object.ignore.javalang;
021
022import java.lang.reflect.Method;
023import java.util.List;
024
025import com.google.common.collect.Lists;
026
027import org.apache.isis.core.commons.factory.InstanceUtil;
028import org.apache.isis.core.metamodel.facetapi.FeatureType;
029import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
030import org.apache.isis.core.metamodel.methodutils.MethodScope;
031
032/**
033 * Removes all methods inherited specified class.
034 */
035public abstract class AbstractRemoveMethodsFacetFactory extends FacetFactoryAbstract {
036
037    private static class MethodAndParameterTypes {
038        private final String methodName;
039        private final Class<?>[] methodParameters;
040
041        public MethodAndParameterTypes(final String methodName, final Class<?>[] methodParameters) {
042            this.methodName = methodName;
043            this.methodParameters = methodParameters;
044        }
045    }
046
047    private final List<MethodAndParameterTypes> methodsToIgnore = Lists.newArrayList();
048
049    public AbstractRemoveMethodsFacetFactory(final Class<?> typeToIgnore) {
050        super(FeatureType.OBJECTS_ONLY);
051        final Method[] methods = typeToIgnore.getMethods();
052        for (final Method method : methods) {
053            methodsToIgnore.add(new MethodAndParameterTypes(method.getName(), method.getParameterTypes()));
054        }
055    }
056
057    public AbstractRemoveMethodsFacetFactory(final String typeToIgnoreIfOnClasspath) {
058        super(FeatureType.OBJECTS_ONLY);
059        try {
060            Class<?> typeToIgnore = InstanceUtil.loadClass(typeToIgnoreIfOnClasspath);
061            addMethodsToBeIgnored(typeToIgnore);
062        } catch(Exception ex) {
063            // ignore
064        }
065    }
066
067    private void addMethodsToBeIgnored(Class<?> typeToIgnore) {
068        final Method[] methods = typeToIgnore.getMethods();
069        for (final Method method : methods) {
070            methodsToIgnore.add(new MethodAndParameterTypes(method.getName(), method.getParameterTypes()));
071        }
072    }
073
074    @Override
075    public void process(final ProcessClassContext processClassContext) {
076        for (final MethodAndParameterTypes mapt : methodsToIgnore) {
077            processClassContext.removeMethod(MethodScope.OBJECT, mapt.methodName, null, mapt.methodParameters);
078        }
079    }
080
081}