org.neo4j.kernel.extension
Class KernelExtensions

java.lang.Object
  org.neo4j.graphdb.DependencyResolver.Adapter
      org.neo4j.kernel.extension.KernelExtensions

All Implemented Interfaces:

DependencyResolver, Lifecycle

public class KernelExtensions
extends DependencyResolver.Adapter
implements Lifecycle

Nested Class Summary

Nested classes/interfaces inherited from interface org.neo4j.graphdb.DependencyResolver

DependencyResolver.Adapter, DependencyResolver.SelectionStrategy<T>

Constructor Summary

KernelExtensions(Iterable<KernelExtensionFactory<?>> kernelExtensionFactories, Config config, DependencyResolver dependencyResolver)

Method Summary

void	addKernelExtension(KernelExtensionFactory kernelExtensionFactory)
void	addKernelExtensionListener(KernelExtensionListener listener)
void	init()
boolean	isRegistered(Class<?> kernelExtensionFactoryClass)
void	removeKernelExtension(KernelExtensionFactory kernelExtensionFactory)
void	removeKernelExtensionListener(KernelExtensionListener listener)
<T> T	resolveDependency(Class<T> type, DependencyResolver.SelectionStrategy<T> selector) Tries to resolve a dependency that matches a given class.
void	shutdown()
void	start()
void	stop()

Methods inherited from class org.neo4j.graphdb.DependencyResolver.Adapter

resolveDependency

Methods inherited from class java.lang.Object

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

Constructor Detail

KernelExtensions

public KernelExtensions(Iterable<KernelExtensionFactory<?>> kernelExtensionFactories,
                        Config config,
                        DependencyResolver dependencyResolver)

Method Detail

init

public void init()
          throws Throwable

Specified by:

init in interface Lifecycle

Throws:

Throwable

start

public void start()
           throws Throwable

Specified by:

start in interface Lifecycle

Throws:

Throwable

stop

public void stop()
          throws Throwable

Specified by:

stop in interface Lifecycle

Throws:

Throwable

shutdown

public void shutdown()
              throws Throwable

Specified by:

shutdown in interface Lifecycle

Throws:

Throwable

isRegistered

public boolean isRegistered(Class<?> kernelExtensionFactoryClass)

addKernelExtension

public void addKernelExtension(KernelExtensionFactory kernelExtensionFactory)

removeKernelExtension

public void removeKernelExtension(KernelExtensionFactory kernelExtensionFactory)

addKernelExtensionListener

public void addKernelExtensionListener(KernelExtensionListener listener)

removeKernelExtensionListener

public void removeKernelExtensionListener(KernelExtensionListener listener)

resolveDependency

public <T> T resolveDependency(Class<T> type,
                               DependencyResolver.SelectionStrategy<T> selector)
                    throws IllegalArgumentException

Description copied from interface: DependencyResolver

Tries to resolve a dependency that matches a given class. All candidates are fed to the selector which ultimately becomes responsible for making the choice between all available candidates.

Specified by:

resolveDependency in interface DependencyResolver

Parameters:

type - the type of Class that the returned instance must implement.

selector - DependencyResolver.SelectionStrategy which will make the choice of which one to return among matching candidates.

Returns:

the resolved dependency for the given type.

Throws:

IllegalArgumentException - if no matching dependency was found.