org.opennms.netmgt.dao.support
Class IndexStorageStrategy

java.lang.Object
  org.opennms.netmgt.dao.support.IndexStorageStrategy

All Implemented Interfaces:

StorageStrategy

Direct Known Subclasses:

FrameRelayStorageStrategy, HostFileSystemStorageStrategy, SiblingColumnStorageStrategy, XmlStorageStrategy

public class IndexStorageStrategy
extends Object
implements StorageStrategy

Field Summary

protected StorageStrategyService

m_storageStrategyService

Constructor Summary

IndexStorageStrategy()

Method Summary

String	getRelativePathForAttribute(String resourceParent, String resource, String attribute) getRelativePathForAttribute
String	getResourceNameFromIndex(CollectionResource resource) This functions translate resourceIndex into a "unique" and "non-variable" name that could be identify a resource, as described earlier.
String	getResourceTypeName() getResourceTypeName
protected ThreadCategory	log() log
void	setParameters(List<Parameter> parameterCollection) setParameters
void	setResourceTypeName(String name) setResourceTypeName
void	setStorageStrategyService(StorageStrategyService agent) Add to a strategy the possibility to get additional information using SNMP when is necessary.

Methods inherited from class java.lang.Object

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

Field Detail

m_storageStrategyService

protected StorageStrategyService m_storageStrategyService

Constructor Detail

IndexStorageStrategy

public IndexStorageStrategy()

Method Detail

getRelativePathForAttribute

public String getRelativePathForAttribute(String resourceParent,
                                          String resource,
                                          String attribute)

getRelativePathForAttribute

Specified by:

getRelativePathForAttribute in interface StorageStrategy

Parameters:

resourceParent - a String object.

resource - a String object.

attribute - a String object.

Returns:

a String object.

setResourceTypeName

public void setResourceTypeName(String name)

setResourceTypeName

Specified by:

setResourceTypeName in interface StorageStrategy

Parameters:

name - a String object.

getResourceTypeName

public String getResourceTypeName()

getResourceTypeName

Returns:

a String object.

getResourceNameFromIndex

public String getResourceNameFromIndex(CollectionResource resource)

This functions translate resourceIndex into a "unique" and "non-variable" name that could be identify a resource, as described earlier. This method could be expensive because it could require send SNMP queries and make complicated functions to build the name. So you must try to call it only when is necessary.

Specified by:

getResourceNameFromIndex in interface StorageStrategy

Parameters:

resource - a CollectionResource object

Returns:

a String object.

setStorageStrategyService

public void setStorageStrategyService(StorageStrategyService agent)

Add to a strategy the possibility to get additional information using SNMP when is necessary. There are complex tables on some MIBs where indexes depends on indexes from other tables (indirect indexing). For this kind of resources we must send some additional SNMP queries to build a unique name.

Specified by:

setStorageStrategyService in interface StorageStrategy

Parameters:

agent - a StorageStrategyService object.

setParameters

public void setParameters(List<Parameter> parameterCollection)
                   throws IllegalArgumentException

setParameters

Specified by:

setParameters in interface StorageStrategy

Parameters:

parameterCollection - a List object.

Throws:

IllegalArgumentException

log

protected ThreadCategory log()

log

Returns:

a ThreadCategory object.