no.tornado.inject

Class ApplicationContext

java.lang.Object

no.tornado.inject.ApplicationContext

public class ApplicationContext
extends Object

The ApplicationContext houses all your beans. You load it by supplying any object you want to the ApplicationContext#registerBeans() method.

All methods in the beanProvider object is concidered beans, and will be instantiated lazily unless you annotate then with @Eager. You don't need to implement an interface, and the methods in the beanProvider can have any visibility you want. The method name is the bean name.

Your beans can be automatically injected with other beans from your ApplicationContext if you annotate the fields with the @Inject annotation. Circular dependencies are allowed. You can supply the bean-argument to the @Inject annotation if you want to inject a spesific bean based on name. If you don't, the best matching object based on type and name of the field will be injected.

You can even inject beans that are not part of your ApplicationContext via the ApplicationContext.inject(object) method. Any @Inject annotated field will be injected.

For more information, see these annotations:

See Also:

Eager, Inject, Intercept, Destroy

Constructor Summary

Constructors

Constructor and Description
ApplicationContext()

Method Summary

Methods

Modifier and Type	Method and Description
static <T> T	getBean(Class<T> className) Get a bean from the ApplicationContext via className.
static Object	getBean(String beanName) Manually get a bean from the ApplicationContext via bean name.
static BeanInfo	getBeanInfo(String beanName) Get the BeanInfo object, containing various information about a bean, including the bean.
static List<BeanInfo>	getBeanInfos(Class className) Get all BeanInfo objects for the supplied class
static <T> List<T>	getBeans(Class<T> className) Get all beans of the supplied class
static void	inject(Object object) Inject beans from the ApplicationContext into an arbitrary object that is not part of the ApplicationContext.
static void	registerBeans(Object beanProvider) Register beans into your ApplicationContext.
static void	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Detail

ApplicationContext

public ApplicationContext()

Method Detail

registerBeans

public static void registerBeans(Object beanProvider)

Register beans into your ApplicationContext. The beanProvider can be any object, and all methods in the object will be conciders bean definitions. The methodName will be the beanName in the context.

Parameters:

beanProvider - An object that provides beans for your ApplicationContext.

For more information:

See Also:

ApplicationContext

getBean

public static Object getBean(String beanName)

Manually get a bean from the ApplicationContext via bean name.

Parameters:

beanName - The name of the bean you want

Returns:

The bean, if found, null if not.

getBean

public static <T> T getBean(Class<T> className)

Get a bean from the ApplicationContext via className.

If more beans of same class exists, the first is returned.

Parameters:

className - The class name of the bean you want

Returns:

The first bean of the supplied className if found, null if not

getBeanInfo

public static BeanInfo getBeanInfo(String beanName)

Get the BeanInfo object, containing various information about a bean, including the bean.

Parameters:

beanName - The name of the bean you want the BeanInfo for

Returns:

The BeanInfo for the bean name, null if not found

getBeans

public static <T> List<T> getBeans(Class<T> className)

Get all beans of the supplied class

Parameters:

className - The class name of the beans you want

Returns:

A list of all beans for this class, empty list if none found.

getBeanInfos

public static List<BeanInfo> getBeanInfos(Class className)

Get all BeanInfo objects for the supplied class

Parameters:

className - The class name of the BeanInfos you want

Returns:

A list of BeanInfo objects matching the supplied class name

inject

public static void inject(Object object)

Inject beans from the ApplicationContext into an arbitrary object that is not part of the ApplicationContext. The object must still contain @Inject annotations.

Parameters:

object - The object you want to inject with members from the ApplicationContext

shutdown

public static void shutdown()