| /* |
| * $Id$ |
| * |
| * 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 java.util.Map; |
| |
| 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 ScopeVariableResolverFactory extends |
| ReadOnlyVariableResolverFactory { |
| |
| /** |
| * The length of the scope suffix: "Scope". |
| */ |
| private static final int SCOPE_SUFFIX_LENGTH = 5; |
| |
| /** |
| * Constructor. |
| * |
| * @param requestHolder The Tiles request holder. |
| * @since 2.2.0 |
| */ |
| public ScopeVariableResolverFactory(TilesRequestContextHolder requestHolder) { |
| super(requestHolder); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public VariableResolver createVariableResolver(String name) { |
| return new ScopeVariableResolver(name); |
| } |
| |
| /** {@inheritDoc} */ |
| public boolean isTarget(String name) { |
| Request request = requestHolder.getTilesRequestContext(); |
| if (name.endsWith("Scope")) { |
| String scopeName = name.substring(0, name.length() - SCOPE_SUFFIX_LENGTH); |
| for (String availableScope : request.getAvailableScopes()) { |
| if (scopeName.equals(availableScope)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Resolves a single attribute stored in request, session or application scope. |
| * |
| * @version $Rev$ $Date$ |
| * @since 2.2.0 |
| */ |
| private class ScopeVariableResolver extends ReadOnlyVariableResolver { |
| |
| /** |
| * Constructor. |
| * |
| * @param name The name of the attribute. |
| * @since 2.2.0 |
| */ |
| public ScopeVariableResolver(String name) { |
| super(name); |
| } |
| |
| /** {@inheritDoc} */ |
| @SuppressWarnings("rawtypes") |
| public Class getType() { |
| return Map.class; |
| } |
| |
| /** {@inheritDoc} */ |
| public Object getValue() { |
| Request request = requestHolder.getTilesRequestContext(); |
| return request.getContext(name.substring(0, name.length() - SCOPE_SUFFIX_LENGTH)); |
| } |
| } |
| } |