Glassfish example source code file (MbeansDescriptorsDOMSource.java)

This example Glassfish source code file (MbeansDescriptorsDOMSource.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 - Glassfish tags/keywords

attributeinfo, create, dom, exception, fieldinfo, fieldinfo, io, log, logging, management, no, node, node, object, parameterinfo, parameterinfo, registry, string, string, util

The Glassfish MbeansDescriptorsDOMSource.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
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 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 * holder.
 *
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed 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
 *
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 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.tomcat.util.modeler.modules;

import org.apache.tomcat.util.modeler.*;
import org.apache.tomcat.util.modeler.util.DomUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

import javax.management.ObjectName;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;


public class MbeansDescriptorsDOMSource extends ModelerSource
{
    private static Logger log = Logger.getLogger(MbeansDescriptorsDOMSource.class.getName());

    Registry registry;
    String type;
    List<ObjectName> mbeans=new ArrayList();

    public void setRegistry(Registry reg) {
        this.registry=reg;
    }

    public void setLocation( String loc ) {
        this.location=loc;
    }

    /** Used if a single component is loaded
     *
     * @param type
     */
    public void setType( String type ) {
       this.type=type;
    }

    public void setSource( Object source ) {
        this.source=source;
    }

    public List<ObjectName> loadDescriptors( Registry registry, String location,
                                 String type, Object source)
            throws Exception
    {
        setRegistry(registry);
        setLocation(location);
        setType(type);
        setSource(source);
        execute();
        return mbeans;
    }

    public void execute() throws Exception {
        if( registry==null ) registry=Registry.getRegistry(null, null);

        try {
            InputStream stream=(InputStream)source;
            long t1=System.currentTimeMillis();
            Document doc=DomUtil.readXml(stream);
            // Ignore for now the name of the root element
            Node descriptorsN=doc.getDocumentElement();
            //Node descriptorsN=DomUtil.getChild(doc, "mbeans-descriptors");
            if( descriptorsN == null ) {
                log.log(Level.SEVERE,"No descriptors found");
                return;
            }

            Node firstMbeanN=null;
            if( "mbean".equals( descriptorsN.getNodeName() ) ) {
                firstMbeanN=descriptorsN;
            } else {
                firstMbeanN=DomUtil.getChild(descriptorsN, "mbean");
            }

            if( firstMbeanN==null ) {
                log.log(Level.SEVERE," No mbean tags ");
                return;
            }

            // Process each <mbean> element
            for (Node mbeanN = firstMbeanN; mbeanN != null;
                 mbeanN= DomUtil.getNext(mbeanN))
            {

                // Create a new managed bean info
                ManagedBean managed=new ManagedBean();
                DomUtil.setAttributes(managed, mbeanN);
                Node firstN;

                // Process descriptor subnode
                Node mbeanDescriptorN =
                    DomUtil.getChild(mbeanN, "descriptor");
                if (mbeanDescriptorN != null) {
                    Node firstFieldN =
                        DomUtil.getChild(mbeanDescriptorN, "field");
                    for (Node fieldN = firstFieldN; fieldN != null;
                         fieldN = DomUtil.getNext(fieldN)) {
                        FieldInfo fi = new FieldInfo();
                        DomUtil.setAttributes(fi, fieldN);
                        managed.addField(fi);
                    }
                }

                // process attribute nodes
                firstN=DomUtil.getChild( mbeanN, "attribute");
                for (Node descN = firstN; descN != null;
                     descN = DomUtil.getNext( descN ))
                {

                    // Create new attribute info
                    AttributeInfo ai=new AttributeInfo();
                    DomUtil.setAttributes(ai, descN);

                    // Process descriptor subnode
                    Node descriptorN =
                        DomUtil.getChild(descN, "descriptor");
                    if (descriptorN != null) {
                        Node firstFieldN =
                            DomUtil.getChild(descriptorN, "field");
                        for (Node fieldN = firstFieldN; fieldN != null;
                             fieldN = DomUtil.getNext(fieldN)) {
                            FieldInfo fi = new FieldInfo();
                            DomUtil.setAttributes(fi, fieldN);
                            ai.addField(fi);
                        }
                    }

                    // Add this info to our managed bean info
                    managed.addAttribute( ai );
                    if( log.isLoggable(Level.FINEST)) {
                        log.finest("Create attribute " + ai);
                    }

                }

                // process constructor nodes
                firstN=DomUtil.getChild( mbeanN, "constructor");
                for (Node descN = firstN; descN != null;
                     descN = DomUtil.getNext( descN )) {

                    // Create new constructor info
                    ConstructorInfo ci=new ConstructorInfo();
                    DomUtil.setAttributes(ci, descN);

                    // Process descriptor subnode
                    Node firstDescriptorN =
                        DomUtil.getChild(descN, "descriptor");
                    if (firstDescriptorN != null) {
                        Node firstFieldN =
                            DomUtil.getChild(firstDescriptorN, "field");
                        for (Node fieldN = firstFieldN; fieldN != null;
                             fieldN = DomUtil.getNext(fieldN)) {
                            FieldInfo fi = new FieldInfo();
                            DomUtil.setAttributes(fi, fieldN);
                            ci.addField(fi);
                        }
                    }

                    // Process parameter subnodes
                    Node firstParamN=DomUtil.getChild( descN, "parameter");
                    for (Node paramN = firstParamN;  paramN != null;
                         paramN = DomUtil.getNext(paramN))
                    {
                        ParameterInfo pi=new ParameterInfo();
                        DomUtil.setAttributes(pi, paramN);
                        ci.addParameter( pi );
                    }

                    // Add this info to our managed bean info
                    managed.addConstructor( ci );
                                
                    if( log.isLoggable(Level.FINEST)) {
                        log.finest("Create constructor " + ci);
                    }

                }

                // process notification nodes
                firstN=DomUtil.getChild( mbeanN, "notification");
                for (Node descN = firstN; descN != null;
                     descN = DomUtil.getNext( descN ))
                {

                    // Create new notification info
                    NotificationInfo ni=new NotificationInfo();
                    DomUtil.setAttributes(ni, descN);

                    // Process descriptor subnode
                    Node firstDescriptorN =
                        DomUtil.getChild(descN, "descriptor");
                    if (firstDescriptorN != null) {
                        Node firstFieldN =
                            DomUtil.getChild(firstDescriptorN, "field");
                        for (Node fieldN = firstFieldN; fieldN != null;
                             fieldN = DomUtil.getNext(fieldN)) {
                            FieldInfo fi = new FieldInfo();
                            DomUtil.setAttributes(fi, fieldN);
                            ni.addField(fi);
                        }
                    }

                    // Process notification-type subnodes
                    Node firstParamN=DomUtil.getChild( descN, "notification-type");
                    for (Node paramN = firstParamN;  paramN != null;
                         paramN = DomUtil.getNext(paramN))
                    {
                        ni.addNotifType( DomUtil.getContent(paramN) );
                    }

                    // Add this info to our managed bean info
                    managed.addNotification( ni );
                    if( log.isLoggable(Level.FINEST)) {
                        log.finest("Created notification " + ni);
                    }

                }

                // process operation nodes
                firstN=DomUtil.getChild( mbeanN, "operation");
                for (Node descN = firstN; descN != null;
                     descN = DomUtil.getNext( descN ))

                {

                    // Create new operation info
                    OperationInfo oi=new OperationInfo();
                    DomUtil.setAttributes(oi, descN);

                    // Process descriptor subnode
                    Node firstDescriptorN =
                        DomUtil.getChild(descN, "descriptor");
                    if (firstDescriptorN != null) {
                        Node firstFieldN =
                            DomUtil.getChild(firstDescriptorN, "field");
                        for (Node fieldN = firstFieldN; fieldN != null;
                             fieldN = DomUtil.getNext(fieldN)) {
                            FieldInfo fi = new FieldInfo();
                            DomUtil.setAttributes(fi, fieldN);
                            oi.addField(fi);
                        }
                    }

                    // Process parameter subnodes
                    Node firstParamN=DomUtil.getChild( descN, "parameter");
                    for (Node paramN = firstParamN;  paramN != null;
                         paramN = DomUtil.getNext(paramN))
                    {
                        ParameterInfo pi=new ParameterInfo();
                        DomUtil.setAttributes(pi, paramN);
                        if( log.isLoggable(Level.FINEST)) 
                            log.finest("Add param " + pi.getName());
                        oi.addParameter( pi );
                    }

                    // Add this info to our managed bean info
                    managed.addOperation( oi );
                    if( log.isLoggable(Level.FINEST)) {
                            log.finest("Create operation " + oi);
                    }

                }

                // Add the completed managed bean info to the registry
                registry.addManagedBean(managed);

            }

            long t2=System.currentTimeMillis();
            log.log(Level.FINE, "Reading descriptors ( dom ) " + (t2-t1));
        } catch( Exception ex ) {
            log.log(Level.SEVERE, "Error reading descriptors ", ex);
        }
    }
}