01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jboss.ejb.plugins.cmp.jdbc.bridge;
23:
24: import org.jboss.ejb.EntityEnterpriseContext;
25: import org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager;
26: import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCCMPFieldMetaData;
27: import org.jboss.deployment.DeploymentException;
28:
29: /**
30: *
31: * @author <a href="mailto:alex@jboss.org">Alexey Loubyansky</a>
32: */
33: public class JDBCLongVersionFieldBridge extends
34: JDBCCMP2xVersionFieldBridge {
35: private static final Long FIRST_VERSION = new Long(1);
36:
37: public JDBCLongVersionFieldBridge(JDBCStoreManager manager,
38: JDBCCMPFieldMetaData metadata) throws DeploymentException {
39: super (manager, metadata);
40: }
41:
42: public JDBCLongVersionFieldBridge(JDBCCMP2xFieldBridge cmpField)
43: throws DeploymentException {
44: super (cmpField);
45: }
46:
47: public void setFirstVersion(EntityEnterpriseContext ctx) {
48: setInstanceValue(ctx, FIRST_VERSION);
49: }
50:
51: public Object updateVersion(EntityEnterpriseContext ctx) {
52: final Long value = (Long) getInstanceValue(ctx);
53: Long next = value == null ? FIRST_VERSION : new Long(value
54: .longValue() + 1);
55: setInstanceValue(ctx, next);
56: return next;
57: }
58: }
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