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/*
* Copyright (c) 2010-2012, 2015 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
* Eike Stepper - maintenance
*/
package org.eclipse.emf.cdo.common.util;
import org.eclipse.emf.cdo.common.model.CDOPackageRegistry;
import org.eclipse.emf.cdo.common.protocol.CDODataInput;
import org.eclipse.emf.cdo.common.protocol.CDODataOutput;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Represents a subset of the {@link EStructuralFeature features} of a {@link EClass class}.
*
* @author Simon McDuff
* @since 3.0
*/
public final class CDOFetchRule
{
private EClass eClass;
private List<EStructuralFeature> features = new ArrayList<EStructuralFeature>(0);
public CDOFetchRule(EClass eClass)
{
this.eClass = eClass;
}
public CDOFetchRule(CDODataInput in, CDOPackageRegistry packageManager) throws IOException
{
eClass = (EClass)in.readCDOClassifierRefAndResolve();
int size = in.readXInt();
for (int i = 0; i < size; i++)
{
int featureID = in.readXInt();
EStructuralFeature feature = eClass.getEStructuralFeature(featureID);
features.add(feature);
}
}
public void write(CDODataOutput out) throws IOException
{
out.writeCDOClassifierRef(eClass);
out.writeXInt(features.size());
for (EStructuralFeature feature : features)
{
out.writeXInt(feature.getFeatureID());
}
}
public EClass getEClass()
{
return eClass;
}
public List<EStructuralFeature> getFeatures()
{
return features;
}
public void addFeature(EStructuralFeature feature)
{
features.add(feature);
}
public void removeFeature(EStructuralFeature feature)
{
features.remove(feature);
}
public boolean isEmpty()
{
return features.isEmpty();
}
}
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