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.metamodel.specloader.traverser;
021
022import java.lang.reflect.Method;
023
024/**
025 * Helper that finds all return types (including generic types) for the provided
026 * {@link Method}.
027 * 
028 * <p>
029 * For example,
030 * 
031 * <pre>
032 * public class CustomerRepository {
033 *     public List&lt;Customer&gt; findCustomers( ... ) { ... }
034 * }
035 * </pre>
036 * <p>
037 * will find both <tt>List</tt> and <tt>Customer</tt>.
038 */
039public class TypeExtractorMethodReturn extends TypeExtractorAbstract implements Iterable<Class<?>> {
040
041    public TypeExtractorMethodReturn(final Method method) {
042        super(method);
043
044        add(method.getReturnType());
045        addParameterizedTypes(method.getGenericReturnType());
046    }
047}