org.opennms.netmgt.collection.support.builder

Class DeferredGenericTypeResource

java.lang.Object

org.opennms.netmgt.collection.support.builder.AbstractResource

org.opennms.netmgt.collection.support.builder.DeferredGenericTypeResource

All Implemented Interfaces:

Resource

Direct Known Subclasses:

GenericTypeResource

public class DeferredGenericTypeResource
extends AbstractResource

A GenericTypeResource which defers the resource type definition lookup until the collection resource is accessed. This allows generic resources to be constructed on the Minion, by only referring to the type, without having to pass the resource type definitions back and forth.

Author:

jwhite

Constructor Summary

Constructors

Constructor and Description
DeferredGenericTypeResource(NodeLevelResource node, String resourceTypeName, String instance)
DeferredGenericTypeResource(NodeLevelResource node, String resourceTypeName, String fallbackResourceTypeName, String instance)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
String	getFallbackTypeName()
String	getInstance() Returns a unique name for the instance of this resource.
String	getLabel(CollectionResource resource) Returns a unique label for the instance of this resource.
NodeLevelResource	getParent()
ResourcePath	getPath(CollectionResource resource) Retrieves the path of the resource, relative to the repository root.
String	getTypeName() Returns the type name associated with the resource.
int	hashCode()
Resource	resolve() Used to lookup additional resource related information that may not have been available when the resource was created, and optionally return a new resource.
String	toString()

Methods inherited from class org.opennms.netmgt.collection.support.builder.AbstractResource

getTimestamp, setTimestamp

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DeferredGenericTypeResource

public DeferredGenericTypeResource(NodeLevelResource node,
                                   String resourceTypeName,
                                   String instance)

DeferredGenericTypeResource

public DeferredGenericTypeResource(NodeLevelResource node,
                                   String resourceTypeName,
                                   String fallbackResourceTypeName,
                                   String instance)

Method Detail

getParent

public NodeLevelResource getParent()

getTypeName

public String getTypeName()

Description copied from interface: Resource

Returns the type name associated with the resource. Used for thresholding.

Returns:

type name

getFallbackTypeName

public String getFallbackTypeName()

getInstance

public String getInstance()

Description copied from interface: Resource

Returns a unique name for the instance of this resource. Used by the IndexStorageStrategy

Returns:

instance name

getLabel

public String getLabel(CollectionResource resource)

Description copied from interface: Resource

Returns a unique label for the instance of this resource. This label is used by threshd to generate a unique id on a per resource basis, grouped by node. See CollectionResourceWrapper

Returns:

a String object.

getPath

public ResourcePath getPath(CollectionResource resource)

Description copied from interface: Resource

Retrieves the path of the resource, relative to the repository root.

Parameters:

resource - Used by the GenericTypeResource in order to determine the instance name.

Returns:

relative path

resolve

public Resource resolve()

Description copied from interface: Resource

Used to lookup additional resource related information that may not have been available when the resource was created, and optionally return a new resource.

See resolve().

This method should only be called when running in the context of the OpenNMS JVM (and not the Minion).

Specified by:

resolve in interface Resource

Overrides:

resolve in class AbstractResource

Returns:

possibly a new resource, or this same instance if no resolving was performed

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object