org.exoplatform.container
Class CachingContainer

java.lang.Object
  org.exoplatform.container.AbstractContainer
      org.exoplatform.container.AbstractInterceptor
          org.exoplatform.container.CachingContainer

All Implemented Interfaces:

Serializable, Container, Interceptor, Disposable, Startable

public class CachingContainer
extends AbstractInterceptor

Version:

$Revision$

Author:

Julien Viet

See Also:

Serialized Form

Field Summary

Fields inherited from class org.exoplatform.container.AbstractInterceptor

holder, parent

Fields inherited from class org.exoplatform.container.AbstractContainer

delegate

Constructor Summary

CachingContainer()

Method Summary

<T> ComponentAdapter<T>	getComponentAdapterOfType(Class<T> componentType, boolean autoRegistration) Find a component adapter associated with the specified type.
<T> List<ComponentAdapter<T>>	getComponentAdaptersOfType(Class<T> componentType) Retrieve all component adapters inside this container that are associated with the specified type.
<T> T	getComponentInstance(Object componentKey, Class<T> bindType, boolean autoRegistration) Retrieve a component instance registered with a specific key.
<T> T	getComponentInstanceOfType(Class<T> componentType, boolean autoRegistration) Find a component instance matching the specified type.
<T> List<T>	getComponentInstancesOfType(Class<T> componentType) Returns a List of components of a certain componentType.
String	getId() Gives an identifier to the Container, allowing to inject an Interceptor into the Interceptor chain.
<T> ComponentAdapter<T>	registerComponentImplementation(Object componentKey, Class<T> componentImplementation) Register a component.
<T> ComponentAdapter<T>	registerComponentInstance(Object componentKey, T componentInstance) Register an arbitrary object as a component in the container.
ComponentAdapter<?>	unregisterComponent(Object componentKey) Unregister a component by key.

Methods inherited from class org.exoplatform.container.AbstractInterceptor

setHolder, setParent, setSuccessor

Methods inherited from class org.exoplatform.container.AbstractContainer

accept, createComponent, dispose, getComponentAdapter, getComponentAdapters, getManagementContext, getMBeanServer, getScopingObjectName, getSuccessor, initialize, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.exoplatform.container.spi.Container

accept, createComponent, getComponentAdapter, getComponentAdapters, getManagementContext, getMBeanServer, getScopingObjectName, getSuccessor, initialize

Methods inherited from interface org.picocontainer.Startable

start, stop

Methods inherited from interface org.picocontainer.Disposable

dispose

Constructor Detail

CachingContainer

public CachingContainer()

Method Detail

getComponentAdapterOfType

public <T> ComponentAdapter<T> getComponentAdapterOfType(Class<T> componentType,
                                                         boolean autoRegistration)

Description copied from class: AbstractContainer

Find a component adapter associated with the specified type. If a component adapter cannot be found in this container, the parent container (if one exists) will be searched.

Specified by:

getComponentAdapterOfType in interface Container

Overrides:

getComponentAdapterOfType in class AbstractContainer

Parameters:

componentType - the type of the component.

autoRegistration - indicates whether the auto registration should be performed or not

Returns:

the component adapter associated with this class, or null if no component has been registered for the specified key.

getComponentAdaptersOfType

public <T> List<ComponentAdapter<T>> getComponentAdaptersOfType(Class<T> componentType)

Description copied from class: AbstractContainer

Retrieve all component adapters inside this container that are associated with the specified type. The component adapters from the parent container are not returned.

Specified by:

getComponentAdaptersOfType in interface Container

Overrides:

getComponentAdaptersOfType in class AbstractContainer

Parameters:

componentType - the type of the components.

Returns:

a collection containing all the ComponentAdapters inside this container that are associated with the specified type. Changes to this collection will not be reflected in the container itself.

getComponentInstancesOfType

public <T> List<T> getComponentInstancesOfType(Class<T> componentType)
                                    throws ContainerException

Description copied from class: AbstractContainer

Returns a List of components of a certain componentType. The list is ordered by instantiation order, starting with the components instantiated first at the beginning.

Specified by:

getComponentInstancesOfType in interface Container

Overrides:

getComponentInstancesOfType in class AbstractContainer

Parameters:

componentType - the searched type.

Returns:

a List of components.

Throws:

ContainerException

getComponentInstance

public <T> T getComponentInstance(Object componentKey,
                                  Class<T> bindType,
                                  boolean autoRegistration)
                       throws ContainerException

Description copied from class: AbstractContainer

Retrieve a component instance registered with a specific key. If a component cannot be found in this container, the parent container (if one exists) will be searched.

Specified by:

getComponentInstance in interface Container

Overrides:

getComponentInstance in class AbstractContainer

Parameters:

componentKey - the key that the component was registered with.

bindType - the expected type of the instance if one can be found.

autoRegistration - indicates whether the auto registration should be performed or not

Returns:

an instantiated component, or null if no component has been registered for the specified key.

Throws:

ContainerException

getComponentInstanceOfType

public <T> T getComponentInstanceOfType(Class<T> componentType,
                                        boolean autoRegistration)

Description copied from class: AbstractContainer

Find a component instance matching the specified type.

Specified by:

getComponentInstanceOfType in interface Container

Overrides:

getComponentInstanceOfType in class AbstractContainer

Parameters:

componentType - the type of the component.

autoRegistration - indicates whether the auto registration should be performed or not

Returns:

the adapter matching the class.

unregisterComponent

public ComponentAdapter<?> unregisterComponent(Object componentKey)

Description copied from class: AbstractContainer

Unregister a component by key.

Specified by:

unregisterComponent in interface Container

Overrides:

unregisterComponent in class AbstractContainer

Parameters:

componentKey - key of the component to unregister.

Returns:

the ComponentAdapter that was associated with this component.

registerComponentInstance

public <T> ComponentAdapter<T> registerComponentInstance(Object componentKey,
                                                         T componentInstance)
                                              throws ContainerException

Description copied from class: AbstractContainer

Register an arbitrary object as a component in the container. This is handy when other components in the same container have dependencies on this kind of object, but where letting the container manage and instantiate it is impossible.

Beware that too much use of this method is an antipattern.

Specified by:

registerComponentInstance in interface Container

Overrides:

registerComponentInstance in class AbstractContainer

Parameters:

componentKey - a key that identifies the component. Must be unique within the container. The type of the key object has no semantic significance unless explicitly specified in the implementing container.

componentInstance - an arbitrary object.

Returns:

the ComponentAdapter that has been associated with this component. In the majority of cases, this return value can be safely ignored, as one of the getXXX() methods of the Container interface can be used to retrieve a reference to the component later on.

Throws:

ContainerException - if registration fails.

registerComponentImplementation

public <T> ComponentAdapter<T> registerComponentImplementation(Object componentKey,
                                                               Class<T> componentImplementation)
                                                    throws ContainerException

Description copied from class: AbstractContainer

Register a component.

Specified by:

registerComponentImplementation in interface Container

Overrides:

registerComponentImplementation in class AbstractContainer

Parameters:

componentKey - a key that identifies the component. Must be unique within the container. The type of the key object has no semantic significance unless explicitly specified in the documentation of the implementing container.

componentImplementation - the component's implementation class. This must be a concrete class (ie, a class that can be instantiated).

Returns:

the ComponentAdapter that has been associated with this component. In the majority of cases, this return value can be safely ignored, as one of the getXXX() methods of the Container interface can be used to retrieve a reference to the component later on.

Throws:

ContainerException

getId

public String getId()

Gives an identifier to the Container, allowing to inject an Interceptor into the Interceptor chain.

Specified by:

getId in interface Interceptor

Overrides:

getId in class AbstractInterceptor