org.everrest.core.servlet

Class ServletContextDependencySupplier

java.lang.Object

org.everrest.core.BaseDependencySupplier

org.everrest.core.servlet.ServletContextDependencySupplier

All Implemented Interfaces:

DependencySupplier

public class ServletContextDependencySupplier
extends BaseDependencySupplier

Resolve dependency by look up instance of object in ServletContext. Instance of object must be present in servlet context as attribute with name which is the same as class or interface name of requested parameter, e.g. instance of org.foo.bar.MyClass must be bound to attribute name org.foo.bar.MyClass

Version:

$Id: ServletContextDependencySupplier.java 71 2010-10-25 15:19:37Z andrew00x $

Author:

Andrey Parfonov

Field Summary

Fields inherited from class org.everrest.core.BaseDependencySupplier

injectAnnotationClass, nameDetector

Constructor Summary

Constructors

Constructor and Description
ServletContextDependencySupplier(javax.servlet.ServletContext ctx)
ServletContextDependencySupplier(javax.servlet.ServletContext ctx, Class<? extends Annotation> injectAnnotation)

Method Summary

Modifier and Type	Method and Description
Object	getComponent(Class<?> type) Get instance of type.
Object	getComponentByName(String name) Get instance of dependency by name.

Methods inherited from class org.everrest.core.BaseDependencySupplier

getComponent, getProvider, isProvider

Methods inherited from class java.lang.Object

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

Constructor Detail

ServletContextDependencySupplier

public ServletContextDependencySupplier(javax.servlet.ServletContext ctx,
                                        Class<? extends Annotation> injectAnnotation)

ServletContextDependencySupplier

public ServletContextDependencySupplier(javax.servlet.ServletContext ctx)

Method Detail

getComponent

public Object getComponent(Class<?> type)

Description copied from interface: DependencySupplier

Get instance of type.

Parameters:

type - required parameter class

Returns:

object of required type or null if instance described by type may not be produced

getComponentByName

public Object getComponentByName(String name)

Description copied from class: BaseDependencySupplier

Get instance of dependency by name. This is optional capability so by default this method returns null. Override it if back-end (e.g. IoC container) supports getting components by key (name).

Overrides:

getComponentByName in class BaseDependencySupplier

Parameters:

name - of dependency

Returns:

object of required type or null if instance described by name may not be produced