/*******************************************************************************
* Copyright (c) 2011 Oracle. 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:
* dclarke, mnorman - Dynamic Persistence
* http://wiki.eclipse.org/EclipseLink/Development/Dynamic
* (https://bugs.eclipse.org/bugs/show_bug.cgi?id=200045)
*
******************************************************************************/
package org.eclipse.persistence.internal.dynamic;
//EclipseLink imports
import org.eclipse.persistence.indirection.ValueHolder;
import org.eclipse.persistence.internal.dynamic.DynamicEntityImpl.PropertyWrapper;
import org.eclipse.persistence.internal.helper.ClassConstants;
import org.eclipse.persistence.internal.indirection.BasicIndirectionPolicy;
import org.eclipse.persistence.mappings.CollectionMapping;
import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.mappings.ForeignReferenceMapping;
public class DynamicPropertiesInitializatonPolicy {
/**
* After entity is created, initialize all required attributes.
* @param type
* @param entity
*/
public void initializeProperties(DynamicTypeImpl type, DynamicEntityImpl entity) {
if (type != null) {
for (DatabaseMapping mapping : type.getMappingsRequiringInitialization()) {
initializeDefaultValue(mapping, entity);
}
}
}
/**
* Initialize the default value handling primitives, collections and
* indirection.
*
* @param mapping
* @param entity
*/
private void initializeDefaultValue(DatabaseMapping mapping, DynamicEntityImpl entity) {
Object value = null;
if (mapping.isDirectToFieldMapping() && mapping.getAttributeClassification().isPrimitive()) {
Class<?> primClass = mapping.getAttributeClassification();
if (primClass == ClassConstants.PBOOLEAN) {
value = false;
}
else if (primClass == ClassConstants.PINT) {
value = 0;
}
else if (primClass == ClassConstants.PLONG) {
value = 0L;
}
else if (primClass == ClassConstants.PCHAR) {
value = Character.MIN_VALUE;
}
else if (primClass == ClassConstants.PDOUBLE) {
value = 0.0d;
}
else if (primClass == ClassConstants.PFLOAT) {
value = 0.0f;
}
else if (primClass == ClassConstants.PSHORT) {
value = Short.MIN_VALUE;
}
else if (primClass == ClassConstants.PBYTE) {
value = Byte.MIN_VALUE;
}
}
else if (mapping.isForeignReferenceMapping()) {
ForeignReferenceMapping refMapping = (ForeignReferenceMapping)mapping;
if (refMapping.usesIndirection() &&
refMapping.getIndirectionPolicy() instanceof BasicIndirectionPolicy) {
value = new ValueHolder(value);
}
else if (refMapping.isCollectionMapping()) {
value = ((CollectionMapping)refMapping).getContainerPolicy().containerInstance();
}
}
else if (mapping.isAggregateObjectMapping()) {
value = mapping.getReferenceDescriptor().getObjectBuilder().buildNewInstance();
}
PropertyWrapper propertyWrapper = entity.getPropertiesMap().get(mapping.getAttributeName());
// NB - only the value is set, not the 'isSet' boolean
propertyWrapper.setValue(value);
}
}