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/**
* Copyright (c) 2004 - 2009 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
* Stefan Winkler - 271444: [DB] Multiple refactorings https://bugs.eclipse.org/bugs/show_bug.cgi?id=271444
*/
package org.eclipse.emf.cdo.server.db.mapping;
import org.eclipse.emf.cdo.server.db.IDBStoreAccessor;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
/**
* Interface which complements {@link IClassMapping} with methods to facilitate
* audit support.
*
* @see {@link IMappingStrategy#hasAuditSupport()
*
* @author Eike Stepper
* @author Stefan Winkler
*
* @since 2.0
*/
public interface IClassMappingAuditSupport
{
/**
* Read a specific version of a revision. If this method returns <code>true</code> it is guaranteed that
* <code>revision.getVersion() == version</code>
*
* @param dbStoreAccessor
* the accessor to use.
* @param revision
* the revision object into which the data should be read. The revision has to be have its ID set to the
* requested object's ID. The version is ignored, as the version parameter is used to determine the version
* to be read.
* @param version
* the version which should be read.
* @param listChunk
* the chunk size to read attribute lists.
* @return <code>true</code>, if the revision has been found and read correctly. <code>false</code> if the revision
* could not be found. In this case, the content of <code>revision</code> is undefined.
*/
public boolean readRevisionByVersion(IDBStoreAccessor dbStoreAccessor, InternalCDORevision revision, int version,
int listChunk);
/**
* Read a specific past version of a revision. If this method returns <code>true</code> it is guaranteed that
* <code>revision.getCreated() <= timeStamp && (getRevised() == 0 || getRevised() >= timeStamp))</code>
*
* @param dbStoreAccessor
* the accessor to use.
* @param revision
* the revision object into which the data should be read. The revision has to be have its ID set to the
* requested object's ID. The version is ignored, as the version parameter is used to determine the version
* to be read.
* @param timeStamp
* the timeStamp which should be used to determine the revision's version.
* @param listChunk
* the chunk size to read attribute lists.
* @return <code>true</code>, if the revision has been found and read correctly. <code>false</code> if the revision
* could not be found. In this case, the content of <code>revision</code> is undefined.
*/
public boolean readRevisionByTime(IDBStoreAccessor dbStoreAccessor, InternalCDORevision revision, long timeStamp,
int listChunk);
}
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