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/*
* Copyright (c) 2004 - 2012 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:
* Eike Stepper - initial API and implementation
* Simon McDuff - bug 201266
* Simon McDuff - bug 212958
* Simon McDuff - bug 213402
*/
package org.eclipse.emf.cdo.spi.common.revision;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.common.branch.CDOBranchPoint;
import org.eclipse.emf.cdo.common.model.CDOModelUtil;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.common.revision.CDORevisionData;
import org.eclipse.emf.cdo.common.util.CDOCommonUtil;
import org.eclipse.emf.cdo.internal.common.messages.Messages;
import org.eclipse.emf.cdo.spi.common.model.InternalCDOClassInfo;
import org.eclipse.net4j.util.ObjectUtil;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import java.text.MessageFormat;
/**
* If the meaning of this type isn't clear, there really should be more of a description here...
*
* @author Eike Stepper
* @since 2.0
*/
public abstract class AbstractCDORevision implements InternalCDORevision
{
private InternalCDOClassInfo classInfo;
/**
* @since 3.0
*/
protected AbstractCDORevision(EClass eClass)
{
if (eClass != null)
{
if (eClass.isAbstract())
{
throw new IllegalArgumentException(MessageFormat.format(Messages.getString("AbstractCDORevision.0"), eClass)); //$NON-NLS-1$
}
initClassInfo(eClass);
}
}
/**
* @since 4.2
*/
public final InternalCDOClassInfo getClassInfo()
{
return classInfo;
}
public final EClass getEClass()
{
if (classInfo != null)
{
return classInfo.getEClass();
}
return null;
}
public boolean isResourceNode()
{
return classInfo.isResourceNode();
}
public boolean isResourceFolder()
{
return classInfo.isResourceFolder();
}
public boolean isResource()
{
return classInfo.isResource();
}
public CDORevisionData data()
{
return this;
}
public CDORevision revision()
{
return this;
}
/**
* @since 3.0
*/
public boolean isHistorical()
{
return getRevised() != UNSPECIFIED_DATE;
}
public boolean isValid(long timeStamp)
{
long startTime = getTimeStamp();
long endTime = getRevised();
return CDOCommonUtil.isValidTimeStamp(timeStamp, startTime, endTime);
}
/**
* @since 4.0
*/
public boolean isValid(CDOBranchPoint branchPoint)
{
return getBranch() == branchPoint.getBranch() && isValid(branchPoint.getTimeStamp());
}
/**
* @since 4.1
*/
public boolean isReadable()
{
return getPermission().isReadable();
}
/**
* @since 4.1
*/
public boolean isWritable()
{
return getPermission().isWritable();
}
/**
* @since 3.0
*/
public void adjustForCommit(CDOBranch branch, long timeStamp)
{
if (ObjectUtil.equals(branch, getBranch()))
{
// Same branch, increase version
setVersion(getVersion() + 1);
}
else
{
// Different branch, start with v1
setVersion(FIRST_VERSION);
}
setBranchPoint(branch.getPoint(timeStamp));
setRevised(UNSPECIFIED_DATE);
}
@Override
public int hashCode()
{
return getID().hashCode() ^ getBranch().hashCode() ^ getVersion();
}
@Override
public boolean equals(Object obj)
{
if (obj == this)
{
return true;
}
if (obj instanceof CDORevision)
{
CDORevision that = (CDORevision)obj;
return getID().equals(that.getID()) && getBranch().equals(that.getBranch()) && getVersion() == that.getVersion();
}
return false;
}
@Override
public String toString()
{
EClass eClass = getEClass();
String name = eClass == null ? "Revision" : eClass.getName();
CDOBranch branch = getBranch();
if (branch == null)
{
return name + "@" + getID() + "v" + getVersion();
}
return name + "@" + getID() + ":" + branch.getID() + "v" + getVersion();
}
/**
* @since 4.2
*/
protected void initClassInfo(EClass eClass)
{
classInfo = (InternalCDOClassInfo)CDOModelUtil.getClassInfo(eClass);
}
/**
* @since 3.0
*/
protected EStructuralFeature[] getAllPersistentFeatures()
{
return classInfo.getAllPersistentFeatures();
}
/**
* @since 3.0
*/
protected int getFeatureIndex(EStructuralFeature feature)
{
return classInfo.getPersistentFeatureIndex(feature);
}
}
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