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/*
* Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
package com.sun.jts.CosTransactions;
import java.util.Map;
import java.util.HashMap;
import java.sql.*;
import javax.sql.*;
import javax.naming.*;
import java.lang.reflect.Method;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
import com.sun.jts.utils.LogFormatter;
/** The LogDBHelper class takes care of writing the transaction logs
* into database.
* @author Sun Micro Systems, Inc
*/
class LogDBHelper {
String resName = "jdbc/TxnDS";
DataSource ds = null;
Method getNonTxConnectionMethod = null;
static final String insertStatement =
System.getProperty("com.sun.jts.dblogging.insertquery",
"insert into txn_log_table values ( ? , ? , ? )");
static final String deleteStatement =
System.getProperty("com.sun.jts.dblogging.deletequery",
"delete from txn_log_table where localtid = ? and servername = ? ");
static final String selectStatement =
System.getProperty("com.sun.jts.dblogging.selectquery",
"select * from txn_log_table where servername = ? ");
static Logger _logger = LogDomains.getLogger(LogDomains.TRANSACTION_LOGGER);
static LogDBHelper _instance = new LogDBHelper();
static LogDBHelper getInstance() {
return _instance;
}
LogDBHelper() {
if (Configuration.getPropertyValue(Configuration.DB_LOG_RESOURCE) != null) {
resName = Configuration.getPropertyValue(Configuration.DB_LOG_RESOURCE);
}
try {
InitialContext ctx = new InitialContext();
ds = (DataSource)ctx.lookup(resName);
Class cls = ds.getClass();
getNonTxConnectionMethod = cls.getMethod("getNonTxConnection", null);
} catch (Throwable t) {
_logger.log(Level.SEVERE,"jts.unconfigured_db_log_resource",resName);
_logger.log(Level.SEVERE,t.getLocalizedMessage(),t);
}
}
boolean addRecord(long localTID, byte[] data) {
if (ds != null) {
Connection conn = null;
PreparedStatement prepStmt1 = null;
try {
conn = ds.getConnection();
prepStmt1 = conn.prepareStatement(insertStatement);
prepStmt1.setLong(1,localTID);
prepStmt1.setString(2,Configuration.getServerName());
prepStmt1.setBytes(3,data);
prepStmt1 .executeUpdate();
return true;
} catch (Throwable ex) {
_logger.log(Level.SEVERE,"jts.exception_in_db_log_resource",ex);
return false;
} finally {
try {
if (prepStmt1 != null)
prepStmt1.close();
if (conn != null)
conn.close();
} catch (Exception ex1) {
_logger.log(Level.SEVERE,"jts.exception_in_db_log_resource",ex1);
}
}
}
return false;
}
boolean deleteRecord(long localTID) {
if (ds != null) {
Connection conn = null;
PreparedStatement prepStmt1 = null;
try {
// To avoid compile time dependency to get NonTxConnection
conn = (Connection)(getNonTxConnectionMethod.invoke(ds, null));
prepStmt1 = conn.prepareStatement(deleteStatement);
prepStmt1.setLong(1,localTID);
prepStmt1.setString(2,Configuration.getServerName());
prepStmt1 .executeUpdate();
return true;
} catch (Exception ex) {
_logger.log(Level.SEVERE,"jts.exception_in_db_log_resource",ex);
return false;
} finally {
try {
if (prepStmt1 != null)
prepStmt1.close();
if (conn != null)
conn.close();
} catch (Exception ex1) {
_logger.log(Level.SEVERE,"jts.exception_in_db_log_resource",ex1);
}
}
}
return false;
}
Map getGlobalTIDMap() {
Map gtidMap = new HashMap();
if (ds != null) {
Connection conn = null;
PreparedStatement prepStmt1 = null;
ResultSet rs = null;
try {
conn = ds.getConnection();
prepStmt1 = conn.prepareStatement(selectStatement);
prepStmt1.setString(1,Configuration.getServerName());
rs = prepStmt1.executeQuery();
while (rs.next()) {
Long localTID = new Long(rs.getLong(1));
byte[] gtridbytes = rs.getBytes(3);
gtidMap.put(GlobalTID.fromTIDBytes(rs.getBytes(3)), localTID);
}
} catch (Exception ex) {
_logger.log(Level.SEVERE,"jts.exception_in_db_log_resource",ex);
} finally {
try {
if (rs != null)
rs.close();
if (prepStmt1 != null)
prepStmt1.close();
if (conn != null)
conn.close();
} catch (Exception ex1) {
_logger.log(Level.SEVERE,"jts.exception_in_db_log_resource",ex1);
}
}
}
return gtidMap;
}
}
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