sk.stuba.fiit.perconik.core.services

Interface Provider

All Superinterfaces:

Nameable

All Known Subinterfaces:

DebugListenerProvider, DebugProvider, DebugResourceProvider, ListenerProvider, ResourceProvider

All Known Implementing Classes:

AbstractListenerProvider, AbstractProvider, AbstractResourceProvider, DebugListenerProviderProxy, DebugResourceProviderProxy, ForwardingListenerProvider, ForwardingProvider, ForwardingResourceProvider

public interface Provider
extends Nameable

An object providing other objects, usually Registrable instances.

Uniqueness of a provider is determined by its qualified name. Two Provider instances with the same qualified name should be implemented by the same class, provide the same functionality and behave the same way.

All providers should fall back to their parent ask it to provide requested objects if they are themselves unable to provide these objects, with exception for the providers at the top of the provider hierarchy which have no parent.

Since:

1.0

Author:

Pavol Zbell

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Compares the specified object with this provider for equality.
int	hashCode() Returns the hash code value for this provider.
Provider	parent() Returns the provider's parent or null if there is no parent.

Methods inherited from interface sk.stuba.fiit.perconik.core.Nameable

getName

Method Detail

parent

Provider parent()

Returns the provider's parent or null if there is no parent.

equals

boolean equals(@Nullable
               java.lang.Object o)

Compares the specified object with this provider for equality. Returns true if the specified object is also provider and the two providers have the same name. This definition ensures that this method works properly across different implementations of the provider interface.

Overrides:

equals in class java.lang.Object

Parameters:

o - an object to be compared for equality with this provider

Returns:

true if the specified object is equal to this provider, false otherwise

hashCode

int hashCode()

Returns the hash code value for this provider. The hash code of a provider should be equivalent to the hash code of the provider's name.

Overrides:

hashCode in class java.lang.Object

Returns:

the hash code value for this provider