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/**
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) and others.
* 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:
* Simon McDuff - initial API and implementation
* Ibrahim Sallam - code refactoring for CDO 3.0
*/
package org.eclipse.emf.cdo.server.internal.objectivity.mapper;
import org.eclipse.emf.cdo.common.id.CDOIDExternal;
import org.eclipse.emf.cdo.server.internal.objectivity.db.ObjyObject;
import org.eclipse.emf.cdo.server.internal.objectivity.db.ObjySchema;
import org.eclipse.emf.cdo.server.internal.objectivity.schema.ObjyProxy;
import org.eclipse.emf.cdo.server.internal.objectivity.utils.OBJYCDOIDUtil;
import org.eclipse.emf.cdo.server.internal.objectivity.utils.TypeConvert;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EStructuralFeature;
import com.objy.as.app.Class_Object;
import com.objy.as.app.Class_Position;
import com.objy.as.app.Proposed_Class;
import com.objy.as.app.d_Access_Kind;
import com.objy.as.app.d_Attribute;
import com.objy.db.app.ooId;
/**
* @author Simon McDuff
*/
// TODO - we ignore the boolean value for null references....
public class SingleReferenceMapper extends BasicTypeMapper implements ISingleTypeMapper
{
static public SingleReferenceMapper INSTANCE = new SingleReferenceMapper();
public boolean createSchema(Proposed_Class proposedClasses, EStructuralFeature feature)
{
EClassifier destination = feature.getEType();
String destinationClassName = ObjySchema.getObjectivityClassName(destination);
proposedClasses.add_ref_attribute(com.objy.as.app.d_Module.LAST, d_Access_Kind.d_PUBLIC, // Access kind
feature.getName(), // Attribute name
1, // # elements in fixed-size array
destinationClassName, // Type of numeric data
false); // Short reference
return false;
}
public Object getValue(ObjyObject objyObject, EStructuralFeature feature)
{
/***
* ooId id2 = internal.ooClassObject().get_ooId(position); if (id2 == null || id2.isNull()) { return null; }
***/
Class_Position position = getAttributePosition(objyObject, feature);
return getValue(objyObject, position);
}
// called by ObjyObject to get some resource elements.
public Object getValue(ObjyObject objyObject, Class_Position position)
{
ooId childObject = objyObject.get_ooId(position);
if (!childObject.isNull())
{
// check for external reference.
// TODO -
// we can optimize this by making sure the object is flagged by having external
// references, and only do the following if true.
// System.out.println("-->> IS: getting Class_Object from OID: " + childObject.getStoreString());
Class_Object refClassObject = Class_Object.class_object_from_oid(childObject);
if (refClassObject.type_of().name().equals(ObjyProxy.className))
{
ObjyProxy proxyObject = new ObjyProxy(refClassObject);
return OBJYCDOIDUtil.createCDIDExternal(proxyObject);
}
}
// convert to CDOID, revese of the setValue()
return OBJYCDOIDUtil.getCDOID(childObject);
}
public void setValue(ObjyObject objyObject, EStructuralFeature feature, Object newValue)
{
Class_Position position = getAttributePosition(objyObject, feature);
setValue(objyObject, position, newValue);
}
// called by ObjyObject to set resource elements.
public void setValue(ObjyObject objyObject, Class_Position position, Object newValue)
{
ooId ooid = null;
if (newValue instanceof CDOIDExternal)
{
// create an ObjyProxy object to hold the the value.
ObjyProxy proxyObject = ObjyProxy.createObject(objyObject.ooId());
proxyObject.setUri(((CDOIDExternal)newValue).getURI());
ooid = proxyObject.ooId();
}
else
{
ooid = TypeConvert.toOoId(newValue);
}
objyObject.set_ooId(position, ooid);
}
public boolean validate(d_Attribute ooAttribute, EStructuralFeature feature)
{
// TODO Auto-generated method stub
System.out.println(">>>OBJYIMPL: SingleRefernceMapper.validate() - not implemented.");
return true;
}
public void delete(ObjyObject objyObject, EStructuralFeature feature)
{
Class_Position position = getAttributePosition(objyObject, feature);
ooId childOid = objyObject.get_ooId(position);
if (!childOid.isNull())
{
// This is a single reference, so we shouldn't be deleting the reference
// object, just set the reference to NULL.
// ooObj childObject = ooObj.create_ooObj(childOid);
// childObject.delete();
setValue(objyObject, feature, null);
}
}
public void initialize(Class_Object classObject, EStructuralFeature feature)
{
// TODO Implement the initialization, if any....
}
public void modifySchema(Proposed_Class proposedooClass, EStructuralFeature feature)
{
throw new UnsupportedOperationException("Implement me!!");
}
public Object remove(ObjyObject objyObject, EStructuralFeature feature)
{
// TODO Auto-generated method stub
throw new UnsupportedOperationException("Implement me!!");
}
}
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