org.opennms.netmgt.poller.jmx.wrappers

Class AbstractWrapper

java.lang.Object

org.opennms.netmgt.poller.jmx.wrappers.AbstractWrapper

Direct Known Subclasses:

CompositeDataWrapper, ObjectNameWrapper, TabularDataWrapper

public abstract class AbstractWrapper
extends Object

Base class for all wrappers used to evaluate MBean attributes in JEXL expressions.

Field Summary

Fields

Modifier and Type	Field and Description
protected MBeanServerConnection	connection The connection to the MBean server.

Constructor Summary

Constructors

Constructor and Description
AbstractWrapper(MBeanServerConnection connection)

Method Summary

Modifier and Type	Method and Description
abstract Object	get(String name) Get the value of the requested attribute.
protected Object	wrap(Object result) Helper to wrap an arbitary result in a wrapper if required.

Methods inherited from class java.lang.Object

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

Field Detail

connection

protected final MBeanServerConnection connection

The connection to the MBean server.

Constructor Detail

AbstractWrapper

public AbstractWrapper(MBeanServerConnection connection)

Method Detail

get

public abstract Object get(String name)

Get the value of the requested attribute. Implementors should wrap the result using the wrap(Object) method.

Parameters:

name - the name of the requested attribute

Returns:

the value

wrap

protected Object wrap(Object result)

Helper to wrap an arbitary result in a wrapper if required.

Parameters:

result - the result to wrap

Returns:

a wrapper or the result itself