/******************************************************************************* | |
* Copyright (c) 1998, 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: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.internal.descriptors; | |
import java.security.AccessController; | |
import java.security.PrivilegedActionException; | |
import org.eclipse.persistence.internal.security.PrivilegedAccessHelper; | |
import org.eclipse.persistence.internal.security.PrivilegedNewInstanceFromClass; | |
import org.eclipse.persistence.mappings.transformers.*; | |
/** | |
* INTERNAL: | |
* An implementation of FieldTransformation which holds onto a transformer class-name | |
* which will be instantiated to do transformations | |
* | |
* @author mmacivor | |
* @since OracleAS TopLink 10<i>g</i> (10.0.3) | |
*/ | |
public class TransformerBasedFieldTransformation extends FieldTransformation { | |
protected Class transformerClass; | |
protected String transformerClassName; | |
protected FieldTransformer transformer; | |
public TransformerBasedFieldTransformation() { | |
super(); | |
} | |
public TransformerBasedFieldTransformation(FieldTransformer aTransformer) { | |
transformer = aTransformer; | |
if (transformer != null) { | |
setTransformerClass(transformer.getClass()); | |
setTransformerClassName(transformer.getClass().getName()); | |
} | |
} | |
public Class getTransformerClass() { | |
return transformerClass; | |
} | |
public void setTransformerClass(Class transformerClass) { | |
this.transformerClass = transformerClass; | |
} | |
public String getTransformerClassName() { | |
return transformerClassName; | |
} | |
public void setTransformerClassName(String transformerClassName) { | |
this.transformerClassName = transformerClassName; | |
} | |
public FieldTransformer buildTransformer() throws Exception { | |
if (transformer == null) { | |
Class transformerClass = getTransformerClass(); | |
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()){ | |
try{ | |
transformer = (FieldTransformer)AccessController.doPrivileged(new PrivilegedNewInstanceFromClass(transformerClass)); | |
}catch (PrivilegedActionException ex){ | |
throw (Exception)ex.getCause(); | |
} | |
}else{ | |
transformer = (FieldTransformer)PrivilegedAccessHelper.newInstanceFromClass(transformerClass); | |
} | |
} | |
return transformer; | |
} | |
} |