| /* |
| * $Id$ |
| * |
| * 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. |
| */ |
| |
| package org.apache.tiles.mvel; |
| |
| import org.apache.tiles.context.TilesRequestContextHolder; |
| import org.apache.tiles.request.Request; |
| import org.mvel2.integration.VariableResolver; |
| |
| /** |
| * Resolves beans stored in request, session and application scopes. |
| * |
| * @version $Rev$ $Date$ |
| * @since 2.2.0 |
| */ |
| public class TilesContextBeanVariableResolverFactory extends |
| ReadOnlyVariableResolverFactory { |
| |
| /** |
| * Constructor. |
| * |
| * @param requestHolder The Tiles request holder. |
| * @since 2.2.0 |
| */ |
| public TilesContextBeanVariableResolverFactory(TilesRequestContextHolder requestHolder) { |
| super(requestHolder); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public VariableResolver createVariableResolver(String name) { |
| return new TilesContextBeanVariableResolver(name); |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean isTarget(String name) { |
| Request request = requestHolder.getTilesRequestContext(); |
| for (String scope : request.getAvailableScopes()) { |
| if (request.getContext(scope).containsKey(name)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Resolves a single attribute stored in request, session or application scope. |
| * |
| * @version $Rev$ $Date$ |
| * @since 2.2.0 |
| */ |
| private class TilesContextBeanVariableResolver extends ReadOnlyVariableResolver { |
| |
| /** |
| * Constructor. |
| * |
| * @param name The name of the attribute. |
| * @since 2.2.0 |
| */ |
| public TilesContextBeanVariableResolver(String name) { |
| super(name); |
| } |
| |
| /** {@inheritDoc} */ |
| @SuppressWarnings("rawtypes") |
| public Class getType() { |
| Object value = getValue(); |
| if (value != null) { |
| return value.getClass(); |
| } |
| return Object.class; |
| } |
| |
| /** {@inheritDoc} */ |
| public Object getValue() { |
| Request request = requestHolder.getTilesRequestContext(); |
| for (String scope : request.getAvailableScopes()) { |
| Object value = request.getContext(scope).get(name); |
| if (value != null) { |
| return value; |
| } |
| } |
| return null; |
| } |
| } |
| } |