/******************************************************************************* | |
* 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 | |
* 06/03/2013-2.5.1 Guy Pelletier | |
* - 402380: 3 jpa21/advanced tests failed on server with | |
* "java.lang.NoClassDefFoundError: org/eclipse/persistence/testing/models/jpa21/advanced/enums/Gender" | |
******************************************************************************/ | |
package org.eclipse.persistence.mappings.converters; | |
import java.security.AccessController; | |
import java.security.PrivilegedActionException; | |
import org.eclipse.persistence.mappings.*; | |
import org.eclipse.persistence.mappings.foundation.AbstractDirectMapping; | |
import org.eclipse.persistence.sessions.*; | |
import org.eclipse.persistence.exceptions.ConversionException; | |
import org.eclipse.persistence.exceptions.ValidationException; | |
import org.eclipse.persistence.internal.security.PrivilegedAccessHelper; | |
import org.eclipse.persistence.internal.security.PrivilegedClassForName; | |
import org.eclipse.persistence.internal.sessions.AbstractSession; | |
/** | |
* <b>Purpose</b>: Type conversion converters are used to explicitly map a database type to a | |
* Java type. | |
* | |
* @author James Sutherland | |
* @since OracleAS TopLink 10<i>g</i> (10.0.3) | |
*/ | |
public class TypeConversionConverter implements Converter { | |
protected DatabaseMapping mapping; | |
/** Field type */ | |
protected Class dataClass; | |
protected String dataClassName; | |
/** Object type */ | |
protected Class objectClass; | |
protected String objectClassName; | |
/** | |
* PUBLIC: | |
* Default constructor. | |
*/ | |
public TypeConversionConverter() { | |
} | |
/** | |
* PUBLIC: | |
* Default constructor. | |
*/ | |
public TypeConversionConverter(DatabaseMapping mapping) { | |
this.mapping = mapping; | |
} | |
/** | |
* INTERNAL: | |
* Convert all the class-name-based settings in this converter 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. | |
* This method is implemented by subclasses as necessary. | |
* @param classLoader | |
*/ | |
public void convertClassNamesToClasses(ClassLoader classLoader){ | |
Class dataClass = null; | |
Class objectClass = null; | |
try{ | |
if (dataClassName != null){ | |
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()){ | |
try { | |
dataClass = (Class)AccessController.doPrivileged(new PrivilegedClassForName(dataClassName, true, classLoader)); | |
} catch (PrivilegedActionException exception) { | |
throw ValidationException.classNotFoundWhileConvertingClassNames(dataClassName, exception.getException()); | |
} | |
} else { | |
dataClass = org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(dataClassName, true, classLoader); | |
} | |
setDataClass(dataClass); | |
} | |
} catch (ClassNotFoundException exc){ | |
throw ValidationException.classNotFoundWhileConvertingClassNames(dataClassName, exc); | |
} | |
try { | |
if (objectClassName != null){ | |
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()){ | |
try { | |
objectClass = (Class)AccessController.doPrivileged(new PrivilegedClassForName(objectClassName, true, classLoader)); | |
} catch (PrivilegedActionException exception) { | |
throw ValidationException.classNotFoundWhileConvertingClassNames(objectClassName, exception.getException()); | |
} | |
} else { | |
objectClass = org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getClassForName(objectClassName, true, classLoader); | |
} | |
setObjectClass(objectClass); | |
} | |
} catch (ClassNotFoundException exc){ | |
throw ValidationException.classNotFoundWhileConvertingClassNames(objectClassName, exc); | |
} | |
}; | |
/** | |
* INTERNAL: | |
* The field value must first be converted to the field type, then the attribute type. | |
*/ | |
public Object convertDataValueToObjectValue(Object fieldValue, Session session) { | |
Object attributeValue = fieldValue; | |
if (attributeValue != null) { | |
try { | |
attributeValue = ((AbstractSession)session).getDatasourcePlatform().convertObject(attributeValue, getDataClass()); | |
} catch (ConversionException e) { | |
throw ConversionException.couldNotBeConverted(mapping, mapping.getDescriptor(), e); | |
} | |
try { | |
attributeValue = ((AbstractSession)session).getDatasourcePlatform().convertObject(attributeValue, getObjectClass()); | |
} catch (ConversionException e) { | |
throw ConversionException.couldNotBeConverted(mapping, mapping.getDescriptor(), e); | |
} | |
} | |
return attributeValue; | |
} | |
/** | |
* PUBLIC: | |
* Returns the class type of the object value. | |
*/ | |
public Class getObjectClass() { | |
return objectClass; | |
} | |
/** | |
* INTERNAL: | |
* Return the name of the object type for the MW usage. | |
*/ | |
public String getObjectClassName() { | |
if ((objectClassName == null) && (objectClass != null)) { | |
objectClassName = objectClass.getName(); | |
} | |
return objectClassName; | |
} | |
/** | |
* PUBLIC: | |
* Returns the class type of the data value. | |
*/ | |
public Class getDataClass() { | |
return dataClass; | |
} | |
/** | |
* INTERNAL: | |
* Return the name of the data type for the MW usage. | |
*/ | |
public String getDataClassName() { | |
if ((dataClassName == null) && (dataClass != null)) { | |
dataClassName = dataClass.getName(); | |
} | |
return dataClassName; | |
} | |
/** | |
* PUBLIC: | |
* Set the class type of the data value. | |
*/ | |
public void setDataClass(Class dataClass) { | |
this.dataClass = dataClass; | |
} | |
/** | |
* INTERNAL: | |
* Set the name of the data type for the MW usage. | |
*/ | |
public void setDataClassName(String dataClassName) { | |
this.dataClassName = dataClassName; | |
} | |
/** | |
* PUBLIC: | |
* Set the class type of the object value. | |
*/ | |
public void setObjectClass(Class objectClass) { | |
this.objectClass = objectClass; | |
} | |
/** | |
* INTERNAL: | |
* Set the name of the object type for the MW usage. | |
*/ | |
public void setObjectClassName(String objectClassName) { | |
this.objectClassName = objectClassName; | |
} | |
/** | |
* INTERNAL: | |
* Convert to the field class. | |
*/ | |
public Object convertObjectValueToDataValue(Object attributeValue, Session session) { | |
try { | |
return ((AbstractSession)session).getDatasourcePlatform().convertObject(attributeValue, getDataClass()); | |
} catch (ConversionException e) { | |
throw ConversionException.couldNotBeConverted(mapping, mapping.getDescriptor(), e); | |
} | |
} | |
/** | |
* INTERNAL: | |
* Set the mapping. | |
*/ | |
public void initialize(DatabaseMapping mapping, Session session) { | |
this.mapping = mapping; | |
// CR#... Mapping must also have the field classification. | |
if (getMapping().isDirectToFieldMapping()) { | |
AbstractDirectMapping directMapping = (AbstractDirectMapping)getMapping(); | |
// Allow user to specify field type to override computed value. (i.e. blob, nchar) | |
if (directMapping.getFieldClassification() == null) { | |
directMapping.setFieldClassification(getDataClass()); | |
} | |
// Set the object class from the attribute, if null. | |
if (getObjectClass() == null) { | |
setObjectClass(directMapping.getAttributeClassification()); | |
} | |
} else if (getMapping().isDirectCollectionMapping()) { | |
((DirectCollectionMapping) getMapping()).setAttributeClassification(getObjectClass()); | |
} | |
} | |
/** | |
* INTERNAL: | |
* Return the mapping. | |
*/ | |
protected DatabaseMapping getMapping() { | |
return mapping; | |
} | |
/** | |
* INTERNAL: | |
* If the converter converts the value to a non-atomic value, i.e. | |
* a value that can have its' parts changed without being replaced, | |
* then it must return false, serialization can be non-atomic. | |
*/ | |
public boolean isMutable() { | |
return false; | |
} | |
} |