001    /**
002     * Copyright 2005-2013 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.rice.krad.util;
017    
018    import org.kuali.rice.krad.util.GlobalVariables;
019    
020    import java.lang.reflect.InvocationHandler;
021    import java.lang.reflect.Method;
022    import java.util.concurrent.Callable;
023    
024    /**
025     * A proxy invocationhandler that implements around advice which pushes a new GlobalVariables frame before
026     * invocation and pops it after invocation.
027     * @see GlobalVariables#doInNewGlobalVariables
028     */
029    public class GlobalVariablesContextInvocationHandler implements InvocationHandler {
030        private Object proxied;
031        public GlobalVariablesContextInvocationHandler(Object proxied) {
032            this.proxied = proxied;
033        }
034    
035        @Override
036        public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
037            return GlobalVariables.doInNewGlobalVariables(new Callable() {
038                @Override
039                public Object call() throws Exception {
040                    return method.invoke(proxied, args);
041                }
042            });
043        }
044    }