| /* |
| * 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.struts2.views.velocity; |
| |
| import org.apache.velocity.VelocityContext; |
| |
| import com.opensymphony.xwork2.util.ValueStack; |
| |
| public class StrutsVelocityContext extends VelocityContext { |
| |
| ValueStack stack; |
| VelocityContext[] chainedContexts; |
| |
| public StrutsVelocityContext(ValueStack stack) { |
| this(null, stack); |
| } |
| |
| public StrutsVelocityContext(VelocityContext[] chainedContexts, ValueStack stack) { |
| this.chainedContexts = chainedContexts; |
| this.stack = stack; |
| } |
| |
| public boolean internalContainsKey(Object key) { |
| boolean contains = super.internalContainsKey(key); |
| |
| // first let's check to see if we contain the requested key |
| if (contains) { |
| return true; |
| } |
| |
| // if not, let's search for the key in the ognl value stack |
| if (stack != null) { |
| Object o = stack.findValue(key.toString()); |
| |
| if (o != null) { |
| return true; |
| } |
| |
| o = stack.getContext().get(key.toString()); |
| if (o != null) { |
| return true; |
| } |
| } |
| |
| // if we still haven't found it, le's search through our chained contexts |
| if (chainedContexts != null) { |
| for (VelocityContext chainedContext : chainedContexts) { |
| if (chainedContext.containsKey(key)) { |
| return true; |
| } |
| } |
| } |
| |
| // nope, i guess it's really not here |
| return false; |
| } |
| |
| public Object internalGet(String key) { |
| // first, let's check to see if have the requested value |
| if (super.internalContainsKey(key)) { |
| return super.internalGet(key); |
| } |
| |
| // still no luck? let's look against the value stack |
| if (stack != null) { |
| Object object = stack.findValue(key); |
| |
| if (object != null) { |
| return object; |
| } |
| |
| object = stack.getContext().get(key); |
| if (object != null) { |
| return object; |
| } |
| |
| } |
| |
| // finally, if we're chained to other contexts, let's look in them |
| if (chainedContexts != null) { |
| for (VelocityContext chainedContext : chainedContexts) { |
| if (chainedContext.containsKey(key)) { |
| return chainedContext.internalGet(key); |
| } |
| } |
| } |
| |
| // nope, i guess it's really not here |
| return null; |
| } |
| } |