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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* 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
**************************************************************************/
package org.eclipse.emf.cdo.server.internal.db.jdbc;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDUtil;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.common.revision.CDORevisionData;
import org.eclipse.emf.cdo.server.db.IAttributeMapping;
import org.eclipse.emf.cdo.server.internal.db.CDODBSchema;
import org.eclipse.emf.cdo.server.internal.db.ServerInfo;
import org.eclipse.emf.cdo.server.internal.db.bundle.OM;
import org.eclipse.net4j.db.DBException;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.List;
/**
* @author Stefan Winkler
* @since 2.0
*/
public class StatementJDBCDelegate extends AbstractJDBCDelegate
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, StatementJDBCDelegate.class);
public StatementJDBCDelegate()
{
}
@Override
protected void doInsertAttributes(String table, CDORevision revision, List<IAttributeMapping> attributeMappings,
boolean withFullRevisionInfo)
{
StringBuilder builder = new StringBuilder();
builder.append("INSERT INTO ");
builder.append(table);
builder.append(" VALUES (");
builder.append(CDOIDUtil.getLong(revision.getID()));
builder.append(", ");
builder.append(revision.getVersion());
if (withFullRevisionInfo)
{
CDORevisionData data = revision.getData();
builder.append(", ");
builder.append(ServerInfo.getDBID(revision.getCDOClass()));
builder.append(", ");
builder.append(revision.getCreated());
builder.append(", ");
builder.append(revision.getRevised());
builder.append(", ");
builder.append(CDOIDUtil.getLong(data.getResourceID()));
builder.append(", ");
builder.append(CDOIDUtil.getLong((CDOID)data.getContainerID()));
builder.append(", ");
builder.append(data.getContainingFeatureID());
}
if (attributeMappings != null)
{
for (IAttributeMapping attributeMapping : attributeMappings)
{
builder.append(", ");
Object value = attributeMapping.getRevisionValue(revision);
attributeMapping.getField().appendValue(builder, value);
}
}
builder.append(")");
sqlUpdate(builder.toString());
}
@Override
protected void doUpdateRevised(String table, long revisedStamp, long cdoid, int version)
{
StringBuilder builder = new StringBuilder();
builder.append("UPDATE ");
builder.append(table);
builder.append(" SET ");
builder.append(CDODBSchema.ATTRIBUTES_REVISED);
builder.append("=");
builder.append(revisedStamp);
builder.append(" WHERE ");
builder.append(CDODBSchema.ATTRIBUTES_ID);
builder.append("=");
builder.append(cdoid);
builder.append(" AND ");
builder.append(CDODBSchema.ATTRIBUTES_VERSION);
builder.append("=");
builder.append(version);
sqlUpdate(builder.toString());
}
@Override
protected void doUpdateRevised(String table, long revisedStamp, long cdoid)
{
StringBuilder builder = new StringBuilder();
builder.append("UPDATE ");
builder.append(table);
builder.append(" SET ");
builder.append(CDODBSchema.ATTRIBUTES_REVISED);
builder.append("=");
builder.append(revisedStamp);
builder.append(" WHERE ");
builder.append(CDODBSchema.ATTRIBUTES_ID);
builder.append("=");
builder.append(cdoid);
builder.append(" AND ");
builder.append(CDODBSchema.ATTRIBUTES_REVISED);
builder.append("=0");
sqlUpdate(builder.toString());
}
@Override
protected void doInsertReference(String table, int dbId, long source, int version, int i, long target)
{
StringBuilder builder = new StringBuilder();
builder.append("INSERT INTO ");
builder.append(table);
builder.append(" VALUES (");
if (dbId != 0)
{
builder.append(dbId);
builder.append(", ");
}
builder.append(source);
builder.append(", ");
builder.append(version);
builder.append(", ");
builder.append(i);
builder.append(", ");
builder.append(target);
builder.append(")");
sqlUpdate(builder.toString());
}
private int sqlUpdate(String sql) throws DBException
{
if (TRACER.isEnabled())
{
TRACER.trace(sql);
}
Statement statement = null;
try
{
statement = getConnection().createStatement();
return statement.executeUpdate(sql);
}
catch (SQLException ex)
{
throw new DBException(ex);
}
finally
{
try
{
statement.close();
}
catch (SQLException e)
{
if (TRACER.isEnabled())
{
TRACER.trace(e);
}
}
}
}
@Override
protected ResultSet doSelectRevisionAttributes(String tableName, long revisionId,
List<IAttributeMapping> attributeMappings, boolean hasFullRevisionInfo, String where) throws SQLException
{
StringBuilder builder = new StringBuilder();
builder.append("SELECT ");
if (hasFullRevisionInfo)
{
builder.append(CDODBSchema.ATTRIBUTES_VERSION);
builder.append(", ");
builder.append(CDODBSchema.ATTRIBUTES_CREATED);
builder.append(", ");
builder.append(CDODBSchema.ATTRIBUTES_REVISED);
builder.append(", ");
builder.append(CDODBSchema.ATTRIBUTES_RESOURCE);
builder.append(", ");
builder.append(CDODBSchema.ATTRIBUTES_CONTAINER);
builder.append(", ");
builder.append(CDODBSchema.ATTRIBUTES_FEATURE);
}
else
{
if (attributeMappings == null)
{
// Only references return
return null;
}
}
if (attributeMappings != null)
{
for (IAttributeMapping attributeMapping : attributeMappings)
{
builder.append(", ");
builder.append(attributeMapping.getField());
}
}
builder.append(" FROM ");
builder.append(tableName);
builder.append(" WHERE ");
builder.append(CDODBSchema.ATTRIBUTES_ID);
builder.append("=");
builder.append(revisionId);
builder.append(" AND (");
builder.append(where);
builder.append(")");
String sql = builder.toString();
if (TRACER.isEnabled())
{
TRACER.trace(sql);
}
return getStatement().executeQuery(sql);
}
@Override
protected ResultSet doSelectRevisionReferences(String tableName, long sourceId, int version, int dbFeatureID,
String where) throws SQLException
{
StringBuilder builder = new StringBuilder();
builder.append("SELECT ");
builder.append(CDODBSchema.REFERENCES_TARGET);
builder.append(" FROM ");
builder.append(tableName);
builder.append(" WHERE ");
if (dbFeatureID != 0)
{
builder.append(CDODBSchema.REFERENCES_FEATURE);
builder.append("=");
builder.append(dbFeatureID);
builder.append(" AND ");
}
builder.append(CDODBSchema.REFERENCES_SOURCE);
builder.append("=");
builder.append(sourceId);
builder.append(" AND ");
builder.append(CDODBSchema.REFERENCES_VERSION);
builder.append("=");
builder.append(version);
if (where != null)
{
builder.append(where);
}
builder.append(" ORDER BY ");
builder.append(CDODBSchema.REFERENCES_IDX);
String sql = builder.toString();
if (TRACER.isEnabled())
{
TRACER.trace(sql);
}
return getStatement().executeQuery(sql);
}
}
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