Package org.apache.hadoop.jmx

Class JMXJsonServletNaNFiltered

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.apache.hadoop.jmx.JMXJsonServlet

org.apache.hadoop.jmx.JMXJsonServletNaNFiltered

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class JMXJsonServletNaNFiltered
extends JMXJsonServlet

For example in case of MutableGauge we are using numbers, but not implementing Number interface, so we skip class check here because we can not be sure NaN values are wrapped with classes which implements the Number interface

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.hadoop.jmx.JMXJsonServlet

jsonFactory, mBeanServer

Constructor Summary

Constructors

Constructor	Description
JMXJsonServletNaNFiltered()

Method Summary

Modifier and Type	Method	Description
protected boolean	extraCheck(java.lang.Object value)	In case you need to modify the logic, how java objects transforms to json, you can overwrite this method to return true in case special handling
protected void	extraWrite(java.lang.Object value, java.lang.String attName, com.fasterxml.jackson.core.JsonGenerator jg)

Methods inherited from class org.apache.hadoop.jmx.JMXJsonServlet

doGet, doTrace, init, isInstrumentationAccessAllowed

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

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

Constructor Detail

JMXJsonServletNaNFiltered

public JMXJsonServletNaNFiltered()

Method Detail

extraCheck

protected boolean extraCheck(java.lang.Object value)

Description copied from class: JMXJsonServlet

In case you need to modify the logic, how java objects transforms to json, you can overwrite this method to return true in case special handling

Overrides:

extraCheck in class JMXJsonServlet

Parameters:

value - the object what should be judged

Returns:

true, if it needs special transformation

extraWrite

protected void extraWrite(java.lang.Object value,
                          java.lang.String attName,
                          com.fasterxml.jackson.core.JsonGenerator jg)
                   throws java.io.IOException

Overrides:

extraWrite in class JMXJsonServlet

Throws:

java.io.IOException