org.lsst.ccs.startup

Class NodeLookup

java.lang.Object

org.lsst.ccs.startup.NodeLookup

All Implemented Interfaces:

ComponentLookupService

public class NodeLookup
extends Object
implements ComponentLookupService

Author:

bamade

Field Summary

Fields inherited from interface org.lsst.ccs.framework.ComponentLookupService

EMPTY, NONE

Constructor Summary

Constructors

Constructor and Description
NodeLookup(EffectiveNode top)

Method Summary

Modifier and Type	Method and Description
void	aliasObject(String alias, Object object) aliases cannot override names in name componentNode structure
<T> LinkedHashMap<String,T>	getChildren(String parentName, Class<T> classFilter) gets the children of a Component in the EffectiveNode and filters by Class.
Object	getComponentByName(String name) return any object registered by the dictionaries of the service.
Map.Entry<String,Object>	getParent(String componentName) gets the Parent of a component in the EffectiveNode tree.
<T> List<T>	listChildren(String parentName) lists the children of a component.

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeLookup

public NodeLookup(EffectiveNode top)

Method Detail

getComponentByName

public Object getComponentByName(String name)

Description copied from interface: ComponentLookupService

return any object registered by the dictionaries of the service. Though most are Configurable objects of the corresponding EffectiveNode In some case a use can register other objects through the alias method method

Specified by:

getComponentByName in interface ComponentLookupService

Returns:

aliasObject

public void aliasObject(String alias,
                        Object object)

aliases cannot override names in name componentNode structure

Specified by:

aliasObject in interface ComponentLookupService

Parameters:

alias -

object -

getChildren

public <T> LinkedHashMap<String,T> getChildren(String parentName,
                                               Class<T> classFilter)

Description copied from interface: ComponentLookupService

gets the children of a Component in the EffectiveNode and filters by Class. BEWARE: the map should be a LinkedHashMap!

Specified by:

getChildren in interface ComponentLookupService

Returns:

listChildren

public <T> List<T> listChildren(String parentName)

Description copied from interface: ComponentLookupService

lists the children of a component.

Specified by:

listChildren in interface ComponentLookupService

Returns:

an empty list if there are no children

getParent

public Map.Entry<String,Object> getParent(String componentName)

Description copied from interface: ComponentLookupService

gets the Parent of a component in the EffectiveNode tree. The parent of the top node is named _EDEN_ and has a null value.

Specified by:

getParent in interface ComponentLookupService

Returns: