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Posted to ojb-dev@db.apache.org by ar...@apache.org on 2003/12/11 20:17:46 UTC
cvs commit: db-ojb/src/java/org/apache/ojb/odmg/locking LockManagerFactory.java
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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