be.redlab.tool.context.ctx

Class NoNullBeanApplicationContext

java.lang.Object

be.redlab.tool.context.BeanApplicationContext

be.redlab.tool.context.ctx.NoNullBeanApplicationContext

All Implemented Interfaces:

ApplicationContext

public class NoNullBeanApplicationContext
extends BeanApplicationContext

An extension to a BeanApplicationContext that does not allow null to be returned.

Author:

redlab

Constructor Summary

Constructors

Constructor and Description
NoNullBeanApplicationContext()
NoNullBeanApplicationContext(BeanFactory factory)

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	find(Class<T> klass) Looks for an object of the specified class.
<T> T	get(String name) Returns the object of the specified type with the specified name.

Methods inherited from class be.redlab.tool.context.BeanApplicationContext

add, add, addAndReplace, findAll, getBeanFactory, hasBean, load, load, performShutdown, preDestroy, shutdown

Methods inherited from class java.lang.Object

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

Constructor Detail

NoNullBeanApplicationContext

public NoNullBeanApplicationContext()

NoNullBeanApplicationContext

public NoNullBeanApplicationContext(BeanFactory factory)

Method Detail

get

public <T> T get(String name)

Returns the object of the specified type with the specified name.

Specified by:

get in interface ApplicationContext

Overrides:

get in class BeanApplicationContext

Parameters:

name - the name of the object to return

Returns:

the object of the specified type or null if the object was not found.

Throws:

NullBeanException - if T was not found.

find

public <T> T find(Class<T> klass)

Looks for an object of the specified class. If multiple are found implementations decide which one is returned. If the specified class is not found a search is done for subclasses of the specified type.

Specified by:

find in interface ApplicationContext

Overrides:

find in class BeanApplicationContext

Parameters:

klass - the class of the object to look for.

Returns:

the object of the specified type or a subclass of the specified type or null if not found.

Throws:

NullBeanException - if T was not found.