/******************************************************************************* | |
* 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.helper; | |
/** | |
* <p> | |
* <b>Purpose</b>: Extension to the existing conversion manager to support the | |
* EJB 3.0 spec. | |
* <p> | |
* <b>Responsibilities</b>: | |
* <ul> | |
* <li> Allow a null value default to be read into primitives. With the current | |
* conversion manager, setting a null into a primitive causes and exception. | |
* This conversion manager was added to avoid that exception and therefore, add | |
* support for schemas that were built before the object model was mapped | |
* (using a primitive). Therefore, EclipseLink will not change the null column value | |
* in the database through this conversion. The value on the database will only | |
* be changed if the user actually sets a new primitive value. | |
* <li> Allows users to define their own set of default null values to be used | |
* in the conversion. | |
* </ul> | |
* | |
* @author Guy Pelletier | |
* @since TopLink 10.1.4 RI | |
*/ | |
public class JPAConversionManager extends ConversionManager { | |
public JPAConversionManager() { | |
super(); | |
} | |
/** | |
* INTERNAL: | |
*/ | |
public Object getDefaultNullValue(Class theClass) { | |
Object defaultNullValue = null; | |
if (this.defaultNullValues != null){ | |
defaultNullValue = getDefaultNullValues().get(theClass); | |
} | |
if (defaultNullValue == null && theClass.isPrimitive()) { | |
if(Double.TYPE.equals(theClass)){ | |
return Double.valueOf(0D); | |
} else if(Long.TYPE.equals(theClass)) { | |
return Long.valueOf(0L); | |
} else if(Character.TYPE.equals(theClass)){ | |
return Character.valueOf('\u0000'); | |
} else if(Float.TYPE.equals(theClass)){ | |
return Float.valueOf(0F); | |
} else if(Short.TYPE.equals(theClass)){ | |
return Short.valueOf((short)0); | |
} else if(Byte.TYPE.equals(theClass)){ | |
return Byte.valueOf((byte)0); | |
} else if(Boolean.TYPE.equals(theClass)){ | |
return Boolean.FALSE; | |
} else { | |
return 0; | |
} | |
} else { | |
return defaultNullValue; | |
} | |
} | |
} |