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java.lang.Objectorg.inria.ns.reflex.util.Registry
public class Registry
A Registry is a structure used to store typed resources.
Registries may be backed by another registry, that is to say when a resource is looked up, a chain of registry may be used to retrieve the resource. The lookup order (top-down or bottom-up) depends on the nature of the resource to research.
Several registries can be backed by the same single registry ; when one of them is involved, it can't access to other registries except to its parent : registries are organized in trees and browsed by branchs.
To retrieve a resource bound to a key, the key must be wrapped in a LookupKey.
Constructor Summary | |
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Registry()
Create a new registry backed by the static registry. |
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Registry(Registry registry)
Create a new registry backed by a given registry. |
Method Summary | |
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Object |
get(Key key)
Return the object stored in this registry, without lookup in the back registries. |
Object |
getFromParent(Key key)
Return the object stored in the parent registry, if any. |
Object |
lookup(LookupKey lookupKey)
Looks up for a resource in this registry. |
void |
store(Key key,
Object resource)
Store a resource with a given key. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Registry()
public Registry(Registry registry)
registry
- The registry that backs this one.Method Detail |
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public void store(Key key, Object resource)
key
- The key with which the resource is stored.
To retrieve the resource, this key must be wrapped
in a LookupKey.resource
- The resource to store.LookupKey
,
lookup(LookupKey)
public Object lookup(LookupKey lookupKey)
lookupKey
- The lookup key, that embeds in itself the lookup method
and the real key with which the resource is stored.
public Object get(Key key)
key
- The key of the object to find.
public Object getFromParent(Key key)
key
- The key of the object to find.
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