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/*******************************************************************************
* Copyright (c) 2007 Oracle. All rights reserved. This
* program and the accompanying materials are made available under the terms of
* the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Oracle. - initial API and implementation
*******************************************************************************/
package org.eclipse.jpt.core.internal.content.orm.resource;
import java.util.Collections;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.jpt.core.internal.mappings.EnumType;
/**
* There is a bug in the translator framework that causes
* enumerators in xml elements and enumerators in xml attributes
* to be treated differently. When the enumerator is an attribute
* setting the model to the default causes the attribute to be removed.
* With an element is causes the default literal to be placed in
* the tag.
*
* The problem is wrapped up in the emf unsettable attribute as well.
* For attributes the eIsSet method returns false for the default value
* For elements the eIsSet method returns true for the default value.
* I don't want to have to use the unsettable option in emf since that would
* require that I call different api. I am not sure yet what the bug is in
* the translator, so I have entered one ~KFM
*/
public class EnumeratedTypeElementTranslator extends EnumeratorTranslator
{
public EnumeratedTypeElementTranslator(String domNameAndPath, EStructuralFeature aFeature, int style) {
super(domNameAndPath, aFeature, style);
}
@Override
public Object getMOFValue(EObject mofObject) {
EnumType type = (EnumType) super.getMOFValue(mofObject);
if (type == EnumType.DEFAULT) {
return null;
}
return type;
}
@Override
public List getMOFChildren(EObject mofObject) {
List result = super.getMOFChildren(mofObject);
if(result != null && result.size() > 0) {
EnumType type = (EnumType) result.get(0);
if(type.getValue() == EnumType.DEFAULT_VALUE)
result = Collections.EMPTY_LIST;
}
return result;
}
}
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