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Glassfish example source code file (ResourceManagerImpl.java)

This example Glassfish source code file (ResourceManagerImpl.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

attempting, componentinvocation, componentinvocation, exception, exception, illegalstateexception, invocationmanager, javaeetransactionmanager, log, logging, poolingexception, poolingexception, resourcehandle, systemexception, transaction, transaction

The Glassfish ResourceManagerImpl.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:
 * Oracle designates this particular file as subject to the "Classpath"
 * 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
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * 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
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.resource.rm;

import java.util.logging.*;

import javax.transaction.*;

import com.sun.logging.*;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import com.sun.enterprise.connectors.ConnectorRuntime;
import com.sun.appserv.connectors.internal.api.PoolingException;
import com.sun.enterprise.resource.*;
import org.glassfish.api.invocation.InvocationManager;
import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.api.invocation.InvocationException;

/**
 * Resource Manager for any resource request from a component.
 *
 * @author Binod PG
 */
public class ResourceManagerImpl implements ResourceManager {
    
    
    static Logger _logger = null;
    static {
        _logger = LogDomains.getLogger(ResourceManagerImpl.class, LogDomains.RSR_LOGGER);
    }
    
    /**
     * Returns the transaction component is participating.
     *
     * @return Handle to the <code>Transaction object.
     * @exception <code>PoolingException
     */
    public Transaction getTransaction() throws PoolingException {
        InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();

        ComponentInvocation inv = invmgr.getCurrentInvocation();
        if (inv == null) {
	    try {
                return ConnectorRuntime.getRuntime().getTransaction();
            } catch (Exception ex) {
	        return null;
	    }
        }
        return (Transaction) inv.getTransaction();
    }
    
    /**
     * Returns the component invoking resource request.
     *
     * @return Handle to the component.
     */
    public Object getComponent(){
        
        InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
        ComponentInvocation inv = invmgr.getCurrentInvocation();
        if (inv == null) {
            return null;
        }
        
        return inv.getInstance();
    }

    /**
     * Enlist the <code>ResourceHandle in the transaction
     *
     * @param h	<code>ResourceHandle object
     * @exception <code>PoolingException
     */
    public void enlistResource(ResourceHandle h) throws PoolingException{
        registerResource(h);
    }
    
    /**
     * Register the <code>ResourceHandle in the transaction
     *
     * @param handle	<code>ResourceHandle object
     * @exception <code>PoolingException
     */
    public void registerResource(ResourceHandle handle)
            throws PoolingException {
        try {
            Transaction tran = null;
            JavaEETransactionManager tm = ConnectorRuntime.getRuntime().getTransactionManager();

            // enlist if necessary
            if (handle.isTransactional()) {
                InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
                ComponentInvocation inv = invmgr.getCurrentInvocation();
                              
                if (inv == null) {
                    //throw new InvocationException();
                    
                    //Go to the tm and get the transaction
		    //This is mimicking the current behavior of
		    //the SystemResourceManagerImpl registerResource method
		    //in that, you return the transaction from the TxManager
		    try {
                        tran = tm.getTransaction(); 	
                    } catch( Exception e ) {
		        tran = null;
			_logger.log(Level.INFO, e.getMessage());
		    }
                } else {
                    tran = (Transaction) inv.getTransaction();
                    tm.registerComponentResource(handle);
                }
                
                if (tran != null) {
 	 	    try{            
 	 	        tm.enlistResource(tran, handle);
 	 	    } catch (Exception ex) {
                        if(_logger.isLoggable(Level.FINE)) {
 	 	            _logger.fine("Exception whle trying to enlist resource " + ex.getMessage());
                        }
 	 	        //If transactional, remove the connection handle from the
 	 	        //component's resource list as there has been exception attempting
 	 	        //to enlist the resource
 	 	        if(inv != null) {
                            if(_logger.isLoggable(Level.FINE)) {
 	 	                _logger.fine("Attempting to unregister component resource");
                            }
 	 	            tm.unregisterComponentResource(handle);
 	 	        }
 	 	        throw ex;
 	 	    }
                }
            }
                        
        } catch (Exception ex) {
            _logger.log(Level.SEVERE,"poolmgr.component_register_exception",ex);
            throw new PoolingException(ex.toString(), ex);
        }
    }
   
    //Overridden by the LazyEnlistableResourceManager to be a No-Op
    protected void enlist( JavaEETransactionManager tm, Transaction tran,
        ResourceHandle h ) throws PoolingException {
        try {
            tm.enlistResource( tran, h );
        } catch( Exception e ) {
            PoolingException pe = new PoolingException( e.getMessage() );
            pe.initCause( e );
            throw pe;
        }
    }
    
    /**
     * Get's the component's transaction and marks it for rolling back.
     */
    public void rollBackTransaction() {
        InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();

	JavaEETransactionManager tm = ConnectorRuntime.getRuntime().getTransactionManager();
	Transaction tran = null;
        try {
            ComponentInvocation inv = invmgr.getCurrentInvocation();
            if (inv == null) {
                //throw new InvocationException();
                    
               //Go to the tm and get the transaction
               //This is mimicking the current behavior of
               //the SystemResourceManagerImpl registerResource method
               //in that, you return the transaction from the TxManager
	       try {
                   tran = tm.getTransaction(); 	
               } catch( Exception e ) {
	           tran = null;
                   _logger.log(Level.INFO, e.getMessage());
               }

            } else {
                tran = (Transaction) inv.getTransaction();
	    }
            if (tran != null) {
                tran.setRollbackOnly();
            }
        } catch (SystemException ex) {
            _logger.log(Level.WARNING,"poolmgr.system_exception",ex);
        } catch (IllegalStateException ex) {
            // ignore
        }
    }
    
    /**
     * delist the <code>ResourceHandle from the transaction
     *
     * @param resource	<code>ResourceHandle object
     * @param xaresFlag flag indicating transaction success. This can
     *        be XAResource.TMSUCCESS or XAResource.TMFAIL
     * @exception <code>PoolingException
     */
    public void delistResource(ResourceHandle resource, int xaresFlag) {
        unregisterResource(resource,xaresFlag);
    }
    
    /**
     * Unregister the <code>ResourceHandle from the transaction
     *
     * @param resource	<code>ResourceHandle object
     * @param xaresFlag flag indicating transaction success. This can
     *        be XAResource.TMSUCCESS or XAResource.TMFAIL
     * @exception <code>PoolingException
     */
    public void unregisterResource(ResourceHandle resource,
                                   int xaresFlag) {

        JavaEETransactionManager tm = ConnectorRuntime.getRuntime().getTransactionManager();

        Transaction tran = null;

        try {
            // delist with TMSUCCESS if necessary
            if (resource.isTransactional()) {
                InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();

                ComponentInvocation inv = invmgr.getCurrentInvocation();
                if (inv == null) {
                    //throw new InvocationException();

                    //Go to the tm and get the transaction
                    //This is mimicking the current behavior of
                    //the SystemResourceManagerImpl registerResource method
                    //in that, you return the transaction from the TxManager
                    try {
                        tran = tm.getTransaction();
                    } catch (Exception e) {
                        tran = null;
                        _logger.log(Level.INFO, e.getMessage());
                    }
                } else {
                    tran = (Transaction) inv.getTransaction();
                    tm.unregisterComponentResource(resource);
                }
                if (tran != null && resource.isEnlisted()) {
                    tm.delistResource(tran, resource, xaresFlag);
                }
            }
        } catch (SystemException ex) {
            _logger.log(Level.WARNING, "poolmgr.system_exception", ex);
        } catch (IllegalStateException ex) {
            // transaction aborted. Do nothing
        } catch (InvocationException ex) {
            // unregisterResource is called outside of component context
            // likely to be container-forced destroy. Do nothing
        }
    }
}

Other Glassfish examples (source code examples)

Here is a short list of links related to this Glassfish ResourceManagerImpl.java source code file:

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