ch.jalu.injector.handlers.dependency

Class CyclicDependenciesDetector

java.lang.Object

ch.jalu.injector.handlers.dependency.CyclicDependenciesDetector

All Implemented Interfaces:

Handler

public class CyclicDependenciesDetector
extends Object
implements Handler

Detects cycles in the dependencies based on the context's parents. This handler should come at the start of the chain so it can stop it with an appropriate error message. If not stopped by this handler, cyclic dependencies will cause a StackOverflowException.

Constructor Summary

Constructors

Constructor and Description
CyclicDependenciesDetector()

Method Summary

Modifier and Type	Method and Description
Resolution<?>	resolve(ResolutionContext context) Resolves the context such that the object identified by the context's object identifier can be instantiated or retrieved.

Methods inherited from class java.lang.Object

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

Methods inherited from interface ch.jalu.injector.handlers.Handler

onAnnotation, onProvider, onProviderClass, postProcess

Constructor Detail

CyclicDependenciesDetector

public CyclicDependenciesDetector()

Method Detail

resolve

public Resolution<?> resolve(ResolutionContext context)

Description copied from interface: Handler

Resolves the context such that the object identified by the context's object identifier can be instantiated or retrieved. May throw an exception if something is invalid, such as when the requested object is not possible to resolve (e.g. wrong combination of annotations, unmet conditions).

The returned Resolution must correspond to the type represented by the context's object identifier.

Specified by:

resolve in interface Handler

Parameters:

context - the resolution context

Returns:

the instantiation for the class, or null if not possible