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/*
* Copyright (c) 2010-2013 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 bug 271444
* Stefan Winkler - derived branch mapping from audit mapping
*/
package org.eclipse.emf.cdo.server.internal.db.mapping.horizontal;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.server.db.IDBStoreAccessor;
import org.eclipse.emf.cdo.server.db.IIDHandler;
import org.eclipse.emf.cdo.server.db.mapping.IMappingStrategy;
import org.eclipse.net4j.db.DBException;
import org.eclipse.net4j.db.DBType;
import org.eclipse.net4j.db.DBUtil;
import org.eclipse.net4j.db.IDBPreparedStatement;
import org.eclipse.net4j.db.IDBPreparedStatement.ReuseProbability;
import org.eclipse.net4j.db.ddl.IDBTable;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.List;
/**
* This is a list-table mapping for audit mode. It has ID and version columns and no delta support.
*
* @author Eike Stepper
* @author Stefan Winkler
* @since 3.0
*/
public class BranchingListTableMapping extends AbstractListTableMapping
{
private String sqlClear;
public BranchingListTableMapping(IMappingStrategy mappingStrategy, EClass eClass, EStructuralFeature feature)
{
super(mappingStrategy, eClass, feature);
}
@Override
protected void initSQLStrings()
{
super.initSQLStrings();
IDBTable table = getTable();
// ----------- clear list -------------------------
StringBuilder builder = new StringBuilder();
builder.append("DELETE FROM "); //$NON-NLS-1$
builder.append(table);
builder.append(" WHERE "); //$NON-NLS-1$
builder.append(LIST_REVISION_ID);
builder.append("=? AND "); //$NON-NLS-1$
builder.append(LIST_REVISION_BRANCH);
builder.append("=? AND "); //$NON-NLS-1$
builder.append(LIST_REVISION_VERSION);
builder.append("=?"); //$NON-NLS-1$
sqlClear = builder.toString();
}
@Override
protected void addKeyFields(List<FieldInfo> list)
{
list.add(new FieldInfo(LIST_REVISION_BRANCH, DBType.INTEGER));
list.add(new FieldInfo(LIST_REVISION_VERSION, DBType.INTEGER));
}
@Override
protected void setKeyFields(PreparedStatement stmt, CDORevision revision) throws SQLException
{
IIDHandler idHandler = getMappingStrategy().getStore().getIDHandler();
idHandler.setCDOID(stmt, 1, revision.getID());
stmt.setInt(2, revision.getBranch().getID());
stmt.setInt(3, revision.getVersion());
}
public void objectDetached(IDBStoreAccessor accessor, CDOID id, long revised)
{
// the audit list mapping does not care about revised references -> NOP
}
@Override
public void rawDeleted(IDBStoreAccessor accessor, CDOID id, CDOBranch branch, int version)
{
if (getTable() == null)
{
initTable(accessor);
}
IIDHandler idHandler = getMappingStrategy().getStore().getIDHandler();
IDBPreparedStatement stmt = accessor.getDBConnection().prepareStatement(sqlClear, ReuseProbability.HIGH);
try
{
idHandler.setCDOID(stmt, 1, id);
stmt.setInt(2, branch.getID());
stmt.setInt(3, version);
DBUtil.update(stmt, false);
}
catch (SQLException e)
{
throw new DBException(e);
}
finally
{
DBUtil.close(stmt);
}
}
}
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