org.agorava.api.atinject

Class BeanResolver

java.lang.Object

org.agorava.api.atinject.BeanResolver

public abstract class BeanResolver
extends Object

Provide an agnostic way to resolve a bean across all JSR 330 engine

Author:

Antoine Sabot-Durand

Field Summary

Fields

Modifier and Type	Field and Description
protected static BeanResolver	instance The current Resolver.

Constructor Summary

Constructors

Constructor and Description
BeanResolver()

Method Summary

Methods

Modifier and Type	Method and Description
static BeanResolver	getInstance()
abstract <T> T	resolve(Class<T> clazz) Resolve a bean by its class
abstract <T> T	resolve(Class<T> clazz, boolean optional)
abstract Object	resolve(String name) Resolve a bean by its name
abstract Object	resolve(String name, boolean optional) Resolve bean by its class.

Methods inherited from class java.lang.Object

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

Field Detail

instance

protected static BeanResolver instance

The current Resolver. Implementation should initialize this at startup

Constructor Detail

BeanResolver

public BeanResolver()

Method Detail

getInstance

public static BeanResolver getInstance()

Returns:

the current resolver

resolve

public abstract Object resolve(String name)
                        throws IllegalStateException

Resolve a bean by its name

Parameters:

name - of the bean

Returns:

the bean value

Throws:

IllegalStateException - if no bean is found

resolve

public abstract <T> T resolve(Class<T> clazz)
                   throws IllegalStateException

Resolve a bean by its class

Type Parameters:

T - final class of bean value

Parameters:

clazz - class to look for

Returns:

the bean value

Throws:

IllegalStateException - if no bean is found

resolve

public abstract Object resolve(String name,
             boolean optional)
                        throws IllegalStateException

Resolve bean by its class. Resolution can be optional

Parameters:

name - of the bean

optional - if true and no bean found return null

Returns:

the bean value or null if no bean found and optional is set to true

Throws:

IllegalStateException - if no bean found and optional is set to false

resolve

public abstract <T> T resolve(Class<T> clazz,
            boolean optional)
                   throws IllegalStateException

Type Parameters:

T - final class of bean value

Parameters:

clazz - class to look for

optional - if true and no bean found return null

Returns:

the bean value

Throws:

IllegalStateException - if no bean found and optional is set to false