LMS-1870 add mapper for serializable objects

SVN: 18622

openbis/source/java/ch/systemsx/cisd/openbis/generic/server/dataaccess/db/SerializableObjectMapper.java

+/*
+ * Copyright 2010 ETH Zuerich, CISD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ch.systemsx.cisd.openbis.generic.server.dataaccess.db;
+
+import java.io.Serializable;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Types;
+
+import net.lemnik.eodsql.TypeMapper;
+
+import org.apache.commons.lang.SerializationUtils;
+
+/**
+ * 
+ *
+ * @author Franz-Josef Elmer
+ */
+public class SerializableObjectMapper implements TypeMapper<Serializable>
+{
+
+    public Serializable get(ResultSet results, int column) throws SQLException
+    {
+        return (Serializable) SerializationUtils.deserialize(results.getBytes(column));
+    }
+
+    public void set(ResultSet results, int column, Serializable obj) throws SQLException
+    {
+        results.updateBytes(column, SerializationUtils.serialize(obj));
+    }
+
+    public void set(PreparedStatement statement, int column, Serializable obj) throws SQLException
+    {
+        if (obj != null)
+        {
+            statement.setBytes(column, SerializationUtils.serialize(obj));
+        } else
+        {
+            statement.setNull(column, Types.BINARY);
+        }
+    }
+
+}