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/**
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tuscany.das.rdb.graphbuilder.schema;
import org.apache.tuscany.das.rdb.config.Relationship;
import org.apache.tuscany.sdo.SDOFactory;
import org.apache.tuscany.sdo.impl.ClassImpl;
import org.apache.tuscany.sdo.impl.ReferenceImpl;
import commonj.sdo.Type;
/**
* A helper used to create EReferences
*/
public class EReferenceMaker {
public EReferenceMaker() {
// Empty Constructor
}
/**
* Create an EReference with the specified name, type, lower bound, upper bound
* and containment.
* @param name
* @param type
* @param lowerBound
* @param upperBound
* @param containment
* @return EReference
*/
public ReferenceImpl createReference(String name, Type type, int lowerBound, int upperBound, boolean containment, boolean changeable) {
ReferenceImpl ref = (ReferenceImpl) getFactory().createReference();
ref.setName(name);
ref.setEType((ClassImpl)type);
ref.setLowerBound(lowerBound);
ref.setUpperBound(upperBound);
ref.setContainment(containment);
ref.setResolveProxies(false);
ref.setChangeable(changeable);
return ref;
}
public ReferenceImpl createReference(String name, Type type, int lowerBound, int upperBound, boolean containment) {
return createReference(name, type, lowerBound, upperBound, containment, true);
}
/**
* Create a one to many reference with the specified name, type, and containment
* @param name
* @param type
* @param containment
* @return
*/
public ReferenceImpl createOneToManyReference(String name, Type type, boolean containment) {
return createReference(name, type, 0, -1, containment);
}
/**
* Create a one to many reference with the specified name and type
* @param name
* @param type
* @return EReference
*/
public ReferenceImpl createOneToManyReference(String name, Type type) {
return createOneToManyReference(name, type, false);
}
/**
* Create a one to one reference with the specified name and type
* @param name
* @param type
* @return EReference
*/
public ReferenceImpl createOneToOneReference(String name, Type type) {
ReferenceImpl ref = createReference(name, type,0,1,false);
return ref;
}
/**
* Create a many to one reference with the specified name and type
* @param name
* @param type
* @return EReference
*/
public ReferenceImpl createManyToOneReference(String name, Type type) {
return createReference(name,type,0,1,false);
}
private SDOFactory getFactory() {
return SDOFactory.eINSTANCE;
}
/**
* @param r
* @param parent
* @param child
* @return
*/
public ReferenceImpl createReference(Relationship r, Type parent, Type child) {
if ( !r.isMany() ) {
ReferenceImpl ref = createOneToOneReference(r.getName(), child);
ReferenceImpl opp = createOneToOneReference(r.getName() + "_opposite", parent);
ref.setEOpposite(opp);
opp.setEOpposite(ref);
return ref;
} else {
ReferenceImpl ref = createOneToManyReference(r.getName(), child);
ReferenceImpl opp = createManyToOneReference(r.getName() + "_opposite", parent);
ref.setEOpposite(opp);
opp.setEOpposite(ref);
return ref;
}
}
}
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