org.apache.camel

Interface IsSingleton

All Known Subinterfaces:

ApiEndpoint, AsyncEndpoint, AsyncProducer, BrowsableEndpoint, DelegateEndpoint, Endpoint, InterceptSendToEndpoint, Producer

public interface IsSingleton

Used for defining if a given class is singleton or not. If the class is a singleton, then a single instance will be shared (and hence should be treated as immutable and be used in a thread-safe manner).

This interface is not implemented as a marker interface (i.e., it's necessary to read isSingleton() instead of instanceof(IsSingleton)). This allows for subclasses to have a singleton status different from a parent and for objects to have this value dynamically changed.

Camel component are very often singleton based, only a few components are not.

Method Summary

Modifier and Type	Method and Description
boolean	isSingleton() Whether this class supports being singleton or not.
static boolean	test(Object instance) Test if the given instance is a singleton or not.

Method Detail

test

static boolean test(Object instance)

Test if the given instance is a singleton or not.

Parameters:

instance - the instance ot check

Returns:

true if the given instance is a singleton

isSingleton

boolean isSingleton()

Whether this class supports being singleton or not.

Returns:

true to be a single shared instance, false to create new instances.