org.quartz.impl.jdbcjobstore.WebLogicDelegate Maven / Gradle / Ivy
/*
* Copyright 2001-2009 Terracotta, Inc. 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.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.sql.Blob;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.slf4j.Logger;
/**
*
* This is a driver delegate for the WebLogic JDBC driver.
*
*
* @see org.quartz.impl.jdbcjobstore.oracle.weblogic.WebLogicOracleDelegate
* @author Jeffrey Wescott
*/
public class WebLogicDelegate extends StdJDBCDelegate {
/**
*
* Create new WebLogicDelegate instance.
*
*
* @param log
* the logger to use during execution
* @param tablePrefix
* the prefix of all table names
*/
public WebLogicDelegate(Logger log, String tablePrefix, String instanceId) {
super(log, tablePrefix, instanceId);
}
/**
*
* Create new WebLogicDelegate instance.
*
*
* @param log
* the logger to use during execution
* @param tablePrefix
* the prefix of all table names
* @param useProperties
* use java.util.Properties for storage
*/
public WebLogicDelegate(Logger log, String tablePrefix, String instanceId,
Boolean useProperties) {
super(log, tablePrefix, instanceId, 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
*/
protected Object getObjectFromBlob(ResultSet rs, String colName)
throws ClassNotFoundException, IOException, SQLException {
Object obj = null;
Blob blobLocator = rs.getBlob(colName);
InputStream binaryInput = null;
try {
if (null != blobLocator && blobLocator.length() > 0) {
binaryInput = blobLocator.getBinaryStream();
}
} catch (Exception ignore) {
}
if (null != binaryInput) {
ObjectInputStream in = new ObjectInputStream(binaryInput);
try {
obj = in.readObject();
} finally {
in.close();
}
}
return obj;
}
protected Object getJobDetailFromBlob(ResultSet rs, String colName)
throws ClassNotFoundException, IOException, SQLException {
if (canUseProperties()) {
Blob blobLocator = rs.getBlob(colName);
InputStream binaryInput = null;
try {
if (null != blobLocator && blobLocator.length() > 0) {
binaryInput = blobLocator.getBinaryStream();
}
} catch (Exception ignore) {
}
return binaryInput;
}
return getObjectFromBlob(rs, colName);
}
}
// EOF