org.apache.hadoop.hive.hwi

Class HWIContextListener

java.lang.Object

org.apache.hadoop.hive.hwi.HWIContextListener

All Implemented Interfaces:

EventListener, javax.servlet.ServletContextListener

public class HWIContextListener
extends Object
implements javax.servlet.ServletContextListener

After getting a contextInitialized event this component starts an instance of the HiveSessionManager.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.commons.logging.Log	l4j

Constructor Summary

Constructors

Constructor and Description
HWIContextListener()

Method Summary

Methods

Modifier and Type	Method and Description
void	contextDestroyed(javax.servlet.ServletContextEvent sce) When the Hive Web Interface is closing we locate the Runnable HiveSessionManager and set it's internal goOn variable to false.
void	contextInitialized(javax.servlet.ServletContextEvent sce) The Hive Web Interface manages multiple hive sessions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

l4j

protected static final org.apache.commons.logging.Log l4j

Constructor Detail

HWIContextListener

public HWIContextListener()

Method Detail

contextInitialized

public void contextInitialized(javax.servlet.ServletContextEvent sce)

The Hive Web Interface manages multiple hive sessions. This event is used to start a Runnable, HiveSessionManager as a thread inside the servlet container.

Specified by:

contextInitialized in interface javax.servlet.ServletContextListener

Parameters:

sce - An event fired by the servlet context on startup

contextDestroyed

public void contextDestroyed(javax.servlet.ServletContextEvent sce)

When the Hive Web Interface is closing we locate the Runnable HiveSessionManager and set it's internal goOn variable to false. This should allow the application to gracefully shutdown.

Specified by:

contextDestroyed in interface javax.servlet.ServletContextListener

Parameters:

sce - An event fired by the servlet context on context shutdown