Commons Modeler example source code file (ServiceTask.java)

This example Commons Modeler source code file (ServiceTask.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 - Commons Modeler tags/keywords

arraylist, arraylist, buildexception, error, list, list, log, mlettask, registry, servicetask, servicetask, string, string, task, util

The Commons Modeler ServiceTask.java source code

/*
 * 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.commons.modeler.ant;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.modeler.Registry;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;

/**
 * Group a set of mbeans in a service, and perform actions on
 * it.
 *
 *
 */
public class ServiceTask extends Task {
    private static Log log = LogFactory.getLog(ServiceTask.class);
    List mbeans=new ArrayList();
    String action;
    String refId;

    public ServiceTask() {
    }

    public void addMbean(MLETTask mbean) {
        mbeans.add(mbean);
    }

    public List getMbeans() {
        return mbeans;
    }

    /** Set action to be executed on the mbean collection. 
     * If null - we'll perform init and start.
     * 
     * @param action
     */ 
    public void setAction(String action) {
        this.action=action;
    }

    /** Perform the action on a previously declared service
     * 
     */ 
    public void setRefId( String ref ) {
        this.refId=ref;
    }

    public void execute() throws BuildException {
        try {
            Registry reg=Registry.getRegistry();

            if( refId != null ) {
                ServiceTask stask=(ServiceTask)project.getReference(refId);
            }
            // create the mbeans
            List onames=new ArrayList();

            for( int i=0; i<mbeans.size(); i++ ) {
                MLETTask mbean=(MLETTask)mbeans.get(i);
                mbean.execute();
                onames.add( mbean.getObjectName());
            }

            if( action==null ) {
                // default: init and start
                reg.invoke(onames, "init", false);
                reg.invoke(onames, "start", false);
            } else {
                reg.invoke(onames, action, false );
            }

        } catch(Exception ex) {
            log.error("Error ", ex);
        }
    }
}