Michael Bayne
66 lines
2.1 KiB
Java
66 lines
2.1 KiB
Java
//
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// $Id$
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//
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// samskivert library - useful routines for java programs
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// Copyright (C) 2006-2007 Michael Bayne, Pär Winzell
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.samskivert.jdbc.depot;
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import java.sql.Connection;
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import java.sql.SQLException;
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import com.samskivert.jdbc.DatabaseLiaison;
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import com.samskivert.jdbc.depot.annotation.GeneratedValue;
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/**
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* Generates primary keys using an identity column.
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*/
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public class IdentityValueGenerator extends ValueGenerator
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{
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public IdentityValueGenerator (GeneratedValue gv, DepotMarshaller<?> dm, FieldMarshaller<?> fm)
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{
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super(gv, dm, fm);
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}
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@Override // from ValueGenerator
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public boolean isPostFactum ()
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{
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return true;
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}
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@Override // from ValueGenerator
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public void init (Connection conn, DatabaseLiaison liaison)
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throws SQLException
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{
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// identity value generators are auto-created by the database
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}
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@Override // from ValueGenerator
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public int nextGeneratedValue (Connection conn, DatabaseLiaison liaison)
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throws SQLException
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{
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return liaison.lastInsertedId(conn, _dm.getTableName(), _fm.getColumnName());
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}
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@Override // from ValueGenerator
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public void delete (Connection conn, DatabaseLiaison liaison)
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throws SQLException
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{
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liaison.deleteGenerator(conn, _dm.getTableName(), _fm.getColumnName());
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}
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}
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