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From arm...@apache.org
Subject cvs commit: db-ojb/src/java/org/apache/ojb/odmg/locking LockManagerFactory.java
Date Thu, 11 Dec 2003 19:17:46 GMT
arminw      2003/12/11 11:17:46

  Modified:    src/java/org/apache/ojb/odmg/locking LockManagerFactory.java
  Log:
  make sure that we only use exactly one LockManager instance
  for singleton
  
  Revision  Changes    Path
  1.3       +1 -100    db-ojb/src/java/org/apache/ojb/odmg/locking/LockManagerFactory.java
  
  Index: LockManagerFactory.java
  ===================================================================
  RCS file: /home/cvs/db-ojb/src/java/org/apache/ojb/odmg/locking/LockManagerFactory.java,v
  retrieving revision 1.2
  retrieving revision 1.3
  diff -u -r1.2 -r1.3
  --- LockManagerFactory.java	17 Jun 2002 19:34:30 -0000	1.2
  +++ LockManagerFactory.java	11 Dec 2003 19:17:46 -0000	1.3
  @@ -1,100 +1 @@
  -package org.apache.ojb.odmg.locking;
  -
  -/* ====================================================================
  - * The Apache Software License, Version 1.1
  - *
  - * Copyright (c) 2001 The Apache Software Foundation.  All rights
  - * reserved.
  - *
  - * Redistribution and use in source and binary forms, with or without
  - * modification, are permitted provided that the following conditions
  - * are met:
  - *
  - * 1. Redistributions of source code must retain the above copyright
  - *    notice, this list of conditions and the following disclaimer.
  - *
  - * 2. Redistributions in binary form must reproduce the above copyright
  - *    notice, this list of conditions and the following disclaimer in
  - *    the documentation and/or other materials provided with the
  - *    distribution.
  - *
  - * 3. The end-user documentation included with the redistribution,
  - *    if any, must include the following acknowledgment:
  - *       "This product includes software developed by the
  - *        Apache Software Foundation (http://www.apache.org/)."
  - *    Alternately, this acknowledgment may appear in the software itself,
  - *    if and wherever such third-party acknowledgments normally appear.
  - *
  - * 4. The names "Apache" and "Apache Software Foundation" and
  - *    "Apache ObjectRelationalBridge" must not be used to endorse or promote products
  - *    derived from this software without prior written permission. For
  - *    written permission, please contact apache@apache.org.
  - *
  - * 5. Products derived from this software may not be called "Apache",
  - *    "Apache ObjectRelationalBridge", nor may "Apache" appear in their name, without
  - *    prior written permission of the Apache Software Foundation.
  - *
  - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  - * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  - * SUCH DAMAGE.
  - * ====================================================================
  - *
  - * This software consists of voluntary contributions made by many
  - * individuals on behalf of the Apache Software Foundation.  For more
  - * information on the Apache Software Foundation, please see
  - * <http://www.apache.org/>.
  - */
  -
  -import org.apache.ojb.broker.PersistenceBrokerFactory;
  -
  -/**
  - * This factory class creates LockManager instances according
  - * to the setting in the OJB properties file.
  - */
  -public class LockManagerFactory
  -{
  -    private static LockManager LOCKMAN = null;
  -
  -    /**
  -     * get a lockManager instance. The implementation class is
  -     * configured in the OJB properties file.
  -     */
  -    public static LockManager getLockManager()
  -    {
  -        if (LOCKMAN == null)
  -        {
  -            synchronized (LockManager.class)
  -            
  -            {
  -                LOCKMAN = createNewLockManager();
  -            }
  -
  -        }
  -        return LOCKMAN;
  -    }
  -
  -    private static LockManager createNewLockManager()
  -    {
  -        try
  -        {
  -            LockingConfiguration config =
  -                (LockingConfiguration) PersistenceBrokerFactory.getConfigurator().getConfigurationFor(null);
  -            Class clazz = config.getLockManagerClass();
  -            return (LockManager) clazz.newInstance();
  -        }
  -        catch (Exception e)
  -        {
  -            return new LockManagerDefaultImpl();
  -        }
  -    }
  -
  -}
  \ No newline at end of file
  +package org.apache.ojb.odmg.locking;


/* ====================================================================
* The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.
 All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or
without
 * modification, are permitted provided that the following conditions
 * are met:
*
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this
list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must
reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer
in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
* 3. The end-user documentation included with the redistribution,
 *    if any, must include
the following acknowledgment:
 *       "This product includes software developed by the
 *
       Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment
may appear in the software itself,
 *    if and wherever such third-party acknowledgments
normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache
ObjectRelationalBridge" must not be used to endorse or promote products
 *    derived from
this software without prior written permission. For
 *    written permission, please contact
apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
*    "Apache ObjectRelationalBridge", nor may "Apache" appear in their name, without
 *  
 prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED
``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. 
IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER
IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
* ====================================================================
 *
 * This software
consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software
Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
*/

import org.apache.ojb.broker.OJBRuntimeException;
import org.apache.ojb.broker.PersistenceBrokerFactory;
import
org.apache.ojb.broker.util.ClassHelper;

/**
 * This factory class creates LockManager instances
according
 * to the setting in the OJB properties file.
 */
public class LockManagerFactory
{
   private static LockManager LOCKMAN = null;
    static
    {
        try
        {
    
       LockingConfiguration config = (LockingConfiguration) PersistenceBrokerFactory.getConfigurator().getConfigurationFor(null);
           LOCKMAN = (LockManager) ClassHelper.newInstance(config.getLockManagerClass());
       }
        catch (Exception e)
        {
            throw new OJBRuntimeException("Unexpected
failure while start LockManager", e);
        }
    }

    /**
     * get a lockManager instance.
The implementation class is
     * configured in the OJB properties file.
     */
    public
static LockManager getLockManager()
    {
        return LOCKMAN;
    }
}
  \ No newline at end of file
  
  
  

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