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/*
* Copyright (c) 2009-2012 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:
* Martin Taal
*/
package org.eclipse.emf.cdo.server.internal.hibernate.tuplizer;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDExternal;
import org.eclipse.emf.cdo.common.id.CDOIDUtil;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.server.internal.hibernate.HibernateUtil;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.usertype.ParameterizedType;
import org.hibernate.usertype.UserType;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Properties;
/**
* A user type which can handle {@link CDOIDExternal}. It's stored in a single varchar field.
*
* @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
*/
public class CDOIDExternalUserType implements UserType, ParameterizedType
{
private static final int[] SQL_TYPES = { Types.VARCHAR };
public CDOIDExternalUserType()
{
}
public int[] sqlTypes()
{
return SQL_TYPES;
}
public Class<?> returnedClass()
{
return CDOID.class;
}
public boolean isMutable()
{
return false;
}
public Object deepCopy(Object value)
{
return value;
}
public boolean equals(Object x, Object y)
{
if (x == y)
{
return true;
}
if (x == null || y == null)
{
return false;
}
return x.equals(y);
}
public Object nullSafeGet(ResultSet resultSet, String[] names, SessionImplementor sessionImplementor, Object owner)
throws SQLException
{
final String data = resultSet.getString(names[0]);
if (data == null)
{
return null;
}
return CDOIDUtil.createExternal(data);
}
public void nullSafeSet(PreparedStatement statement, Object value, int index, SessionImplementor sessionImplementor)
throws SQLException
{
if (value == null)
{
statement.setNull(index, Types.VARCHAR);
return;
}
final Object localValue;
if (value instanceof CDORevision)
{
localValue = HibernateUtil.getInstance().getCDOID(value);
}
else
{
localValue = value;
}
if (localValue instanceof CDOIDExternal)
{
statement.setString(index, ((CDOIDExternal)localValue).getURI());
}
else
{
statement.setString(index, "#" + ((CDOID)localValue).toURIFragment());
}
}
public Serializable disassemble(Object value)
{
return (Serializable)value;
}
public Object assemble(Serializable cachedValue, Object owner)
{
return cachedValue;
}
public Object replace(Object original, Object target, Object owner)
{
return original;
}
public int hashCode(Object x)
{
return x.hashCode();
}
public void setParameterValues(Properties parameters)
{
}
}
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