Struts example source code file (ProfilingActivationInterceptor.java)

This example Struts source code file (ProfilingActivationInterceptor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

abstractinterceptor, exception, exception, object, object, override, profilingactivationinterceptor, profilingactivationinterceptor, string, string

The Struts ProfilingActivationInterceptor.java source code

/*
 * $Id: ProfilingActivationInterceptor.java 651946 2008-04-27 13:41:38Z apetrelli $
 *
 * 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.interceptor;

import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import com.opensymphony.xwork2.util.profiling.UtilTimerStack;

import org.apache.struts2.StrutsConstants;

/**
 * <!-- START SNIPPET: description -->
 *
 * Allows profiling to be enabled or disabled via request parameters, when
 * devMode is enabled.
 *
 * <!-- END SNIPPET: description -->
 *
 *
 * <!-- START SNIPPET: parameters -->
 *
 * <ul>
 *  <li>profilingKey
 * </ul>
 *
 * <!-- END SNIPPET: parameters -->
 *
 * <!-- START SNIPPET: extending -->
 *
 * none
 *
 * <!-- END SNIPPET: extending -->
 *
 * <pre>
 * <!-- START SNIPPET: example -->
 * // to change the profiling key
 * <action ...>
 *   ...
 *   <interceptor-ref name="profiling">
 *      <param name="profilingKey">profilingKey</param>
 *   </interceptor-ref>
 *   ...
 * </action>
 * <!-- END SNIPPET: example -->
 * </pre>
 *
 * @version $Date: 2008-04-27 15:41:38 +0200 (Sun, 27 Apr 2008) $ $Id: ProfilingActivationInterceptor.java 651946 2008-04-27 13:41:38Z apetrelli $
 */
public class ProfilingActivationInterceptor extends AbstractInterceptor {

    private String profilingKey = "profiling";
    private boolean devMode;

    /**
     * @return the profilingKey
     */
    public String getProfilingKey() {
        return profilingKey;
    }

    /**
     * @param profilingKey the profilingKey to set
     */
    public void setProfilingKey(String profilingKey) {
        this.profilingKey = profilingKey;
    }
    
    @Inject(StrutsConstants.STRUTS_DEVMODE)
    public void setDevMode(String mode) {
        this.devMode = "true".equals(mode);
    }

    @Override
    public String intercept(ActionInvocation invocation) throws Exception {
        if (devMode) {
            Object val = invocation.getInvocationContext().getParameters().get(profilingKey);
            if (val != null) {
                String sval = (val instanceof String ? (String)val : ((String[])val)[0]);
                boolean enable = "yes".equalsIgnoreCase(sval) || "true".equalsIgnoreCase(sval);
                UtilTimerStack.setActive(enable);
                invocation.getInvocationContext().getParameters().remove(profilingKey);
            }
        }
        return invocation.invoke();

    }

}