package org.apache.velocity.util.introspection; /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import java.util.Iterator; /** * Default implementation of a {@link ChainableUberspector chainable uberspector} that forwards all calls to the wrapped * uberspector (when that is possible). It should be used as the base class for all chainable uberspectors. * * @version $Id: $ * @since 1.6 * @see ChainableUberspector */ public abstract class AbstractChainableUberspector extends UberspectImpl implements ChainableUberspector { /** The wrapped (decorated) uberspector. */ protected Uberspect inner; /** * {@inheritDoc} * * @see ChainableUberspector#wrap(org.apache.velocity.util.introspection.Uberspect) * @see #inner */ public void wrap(Uberspect inner) { this.inner = inner; } /** * init - the chainable uberspector is responsible for the initialization of the wrapped uberspector * * @see org.apache.velocity.util.introspection.Uberspect#init() */ //@Override public void init() { if (this.inner != null) { this.inner.init(); } } /** * {@inheritDoc} * * @see org.apache.velocity.util.introspection.Uberspect#getIterator(java.lang.Object, * org.apache.velocity.util.introspection.Info) */ //@SuppressWarnings("unchecked") //@Override public Iterator getIterator(Object obj, Info i) throws Exception { return (this.inner != null) ? this.inner.getIterator(obj, i) : null; } /** * {@inheritDoc} * * @see org.apache.velocity.util.introspection.Uberspect#getMethod(java.lang.Object, java.lang.String, * java.lang.Object[], org.apache.velocity.util.introspection.Info) */ //@Override public VelMethod getMethod(Object obj, String methodName, Object[] args, Info i) throws Exception { return (this.inner != null) ? this.inner.getMethod(obj, methodName, args, i) : null; } /** * {@inheritDoc} * * @see org.apache.velocity.util.introspection.Uberspect#getPropertyGet(java.lang.Object, java.lang.String, * org.apache.velocity.util.introspection.Info) */ //@Override public VelPropertyGet getPropertyGet(Object obj, String identifier, Info i) throws Exception { return (this.inner != null) ? this.inner.getPropertyGet(obj, identifier, i) : null; } /** * {@inheritDoc} * * @see org.apache.velocity.util.introspection.Uberspect#getPropertySet(java.lang.Object, java.lang.String, * java.lang.Object, org.apache.velocity.util.introspection.Info) */ //@Override public VelPropertySet getPropertySet(Object obj, String identifier, Object arg, Info i) throws Exception { return (this.inner != null) ? this.inner.getPropertySet(obj, identifier, arg, i) : null; } }