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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
*/
package org.eclipse.emf.cdo.server.internal.db.jdbc;
import org.eclipse.emf.cdo.server.internal.db.bundle.OM;
import org.eclipse.net4j.db.DBUtil;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.sql.PreparedStatement;
import java.text.MessageFormat;
/**
* Wrapper for a prepared statement that is cleaned up when it is cached in a WeakReferenceCache and gc'd. Note that
* this is just a wrapper with access to its wrapped object. There's no interface delegation, because the interface
* delegation would also put the necessity to wrap resultSets and maybe even more, which seems to much overkill for a
* simple internal implementation.
*
* @author Stefan Winkler
*/
public class WrappedPreparedStatement
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, WrappedPreparedStatement.class);
private PreparedStatement wrappedStatement;
public WrappedPreparedStatement(PreparedStatement ps)
{
wrappedStatement = ps;
if (TRACER.isEnabled())
{
TRACER.format("Wrapping Statement: {0}", wrappedStatement); //$NON-NLS-1$
}
}
public PreparedStatement getWrappedStatement()
{
return wrappedStatement;
}
public PreparedStatement unwrapStatement()
{
if (TRACER.isEnabled())
{
TRACER.format("Unwrapping Statement: {0}", wrappedStatement); //$NON-NLS-1$
}
PreparedStatement result = wrappedStatement;
wrappedStatement = null;
return result;
}
@Override
public String toString()
{
return MessageFormat.format("Wrapped[{0}]", wrappedStatement); //$NON-NLS-1$
}
@Override
protected void finalize() throws Throwable
{
if (wrappedStatement != null)
{
if (TRACER.isEnabled())
{
TRACER.format("Closing statement: {0}", wrappedStatement); //$NON-NLS-1$
}
DBUtil.close(wrappedStatement);
wrappedStatement = null;
}
}
}
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