| /* |
| * Copyright (c) 1998, 2020 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // 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: |
| */ |
| @Override |
| 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; |
| } |
| } |
| } |