org.quartz.impl.jdbcjobstore.CloudscapeDelegate Maven / Gradle / Ivy
/*
* Copyright 2001-2009 Terracotta, Inc.
*
* 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 org.quartz.impl.jdbcjobstore;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.quartz.spi.ClassLoadHelper;
import org.slf4j.Logger;
/**
*
* This is a driver delegate for the Cloudscape database, not surprisingly,
* it is known to work with Derby as well. Though later versions of Derby
* may simply use StdJDBCDelegate.
*
*
* @author James House
* @author Sridhar Jawaharlal, Srinivas Venkatarangaiah
* @deprecated Use the StdJDBCDelegate for latest versions of Derby
*/
public class CloudscapeDelegate extends StdJDBCDelegate {
/**
*
* Create new CloudscapeDelegate instance.
*
*
* @param log
* the logger to use during execution
* @param tablePrefix
* the prefix of all table names
*/
public CloudscapeDelegate(Logger log, String tablePrefix, String schedName, String instanceId, ClassLoadHelper classLoadHelper) {
super(log, tablePrefix, schedName, instanceId, classLoadHelper);
}
/**
*
* Create new CloudscapeDelegate instance.
*
*
* @param log
* the logger to use during execution
* @param tablePrefix
* the prefix of all table names
* @param useProperties
* useProperties flag
*/
public CloudscapeDelegate(Logger log, String tablePrefix, String schedName, String instanceId, ClassLoadHelper classLoadHelper,
Boolean useProperties) {
super(log, tablePrefix, schedName, instanceId, classLoadHelper, useProperties);
}
//---------------------------------------------------------------------------
// protected methods that can be overridden by subclasses
//---------------------------------------------------------------------------
/**
*
* This method should be overridden by any delegate subclasses that need
* special handling for BLOBs. The default implementation uses standard
* JDBC java.sql.Blob
operations.
*
*
* @param rs
* the result set, already queued to the correct row
* @param colName
* the column name for the BLOB
* @return the deserialized Object from the ResultSet BLOB
* @throws ClassNotFoundException
* if a class found during deserialization cannot be found
* @throws IOException
* if deserialization causes an error
*/
@Override
protected Object getObjectFromBlob(ResultSet rs, String colName)
throws ClassNotFoundException, IOException, SQLException {
Object obj = null;
byte[] inputBytes = rs.getBytes(colName);
if (null != inputBytes && inputBytes.length != 0) {
ByteArrayInputStream bais = new
ByteArrayInputStream(inputBytes);
ObjectInputStream in = new ObjectInputStream(bais);
try {
obj = in.readObject();
} finally {
in.close();
}
}
return obj;
}
}
// EOF