/******************************************************************************* | |
* Copyright (c) 2011, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* James Sutherland (Oracle) - initial API and implementation | |
******************************************************************************/ | |
package org.eclipse.persistence.descriptors.partitioning; | |
import java.security.AccessController; | |
import java.security.PrivilegedActionException; | |
import java.util.List; | |
import org.eclipse.persistence.exceptions.ValidationException; | |
import org.eclipse.persistence.internal.databaseaccess.Accessor; | |
import org.eclipse.persistence.internal.security.PrivilegedAccessHelper; | |
import org.eclipse.persistence.internal.security.PrivilegedClassForName; | |
import org.eclipse.persistence.internal.security.PrivilegedNewInstanceFromClass; | |
import org.eclipse.persistence.internal.sessions.AbstractRecord; | |
import org.eclipse.persistence.internal.sessions.AbstractSession; | |
import org.eclipse.persistence.queries.DatabaseQuery; | |
/** | |
* PUBLIC: | |
* Defines a user defined partitioning policy. | |
* Used by metadata to defer class loading to init. | |
* @author James Sutherland | |
* @since EclipseLink 2.2 | |
*/ | |
public class CustomPartitioningPolicy extends PartitioningPolicy { | |
protected String partitioningClasName; | |
protected PartitioningPolicy policy; | |
public CustomPartitioningPolicy() { | |
} | |
/** | |
* INTERNAL: | |
* Initialize the policy. | |
*/ | |
public void initialize(AbstractSession session) { | |
} | |
/** | |
* INTERNAL: | |
* Convert all the class-name-based settings to actual class-based | |
* settings. This method is used when converting a project that has been built | |
* with class names to a project with classes. | |
*/ | |
public void convertClassNamesToClasses(ClassLoader classLoader) { | |
if (getPartitioningClasName() == null) { | |
setPartitioningClasName(""); | |
} | |
try { | |
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) { | |
Class partitioningClass = (Class)AccessController.doPrivileged(new PrivilegedClassForName(getPartitioningClasName(), true, classLoader)); | |
this.policy = (PartitioningPolicy)AccessController.doPrivileged(new PrivilegedNewInstanceFromClass(partitioningClass)); | |
} else { | |
Class partitioningClass = PrivilegedAccessHelper.getClassForName(getPartitioningClasName(), true, classLoader); | |
this.policy = (PartitioningPolicy)PrivilegedAccessHelper.newInstanceFromClass(partitioningClass); | |
} | |
} catch (PrivilegedActionException exception) { | |
throw ValidationException.classNotFoundWhileConvertingClassNames(getPartitioningClasName(), exception.getException()); | |
} catch (ClassNotFoundException exception) { | |
throw ValidationException.classNotFoundWhileConvertingClassNames(getPartitioningClasName(), exception); | |
} catch (IllegalAccessException exception) { | |
throw ValidationException.reflectiveExceptionWhileCreatingClassInstance(getPartitioningClasName(), exception); | |
} catch (InstantiationException exception) { | |
throw ValidationException.reflectiveExceptionWhileCreatingClassInstance(getPartitioningClasName(), exception); | |
} | |
} | |
/** | |
* INTERNAL: | |
* Forward to custom policy | |
*/ | |
public List<Accessor> getConnectionsForQuery(AbstractSession session, DatabaseQuery query, AbstractRecord arguments) { | |
return policy.getConnectionsForQuery(session, query, arguments); | |
} | |
public String getPartitioningClasName() { | |
return partitioningClasName; | |
} | |
public void setPartitioningClasName(String partitioningClasName) { | |
this.partitioningClasName = partitioningClasName; | |
} | |
public PartitioningPolicy getPolicy() { | |
return policy; | |
} | |
public void setPolicy(PartitioningPolicy policy) { | |
this.policy = policy; | |
} | |
} |