org.osgl.inject.loader

Class TypedElementLoader<T>

java.lang.Object

org.osgl.inject.loader.ElementLoaderBase<T>

org.osgl.inject.loader.TypedElementLoader<T>

All Implemented Interfaces:

ElementFilter<T>, ElementLoader<T>

public abstract class TypedElementLoader<T>
extends ElementLoaderBase<T>

Load beans whose class extends/implements specified class/interface (as hint)

Constructor Summary

Constructors

Constructor and Description
TypedElementLoader()

Method Summary

Modifier and Type	Method and Description
org.osgl.Osgl.Function<T,Boolean>	filter(Map<String,Object> options, BeanSpec container) This method returns a predicate function that test the bean instance against the class specified by hint.
protected abstract List<Class<? extends T>>	load(Class<T> type, boolean loadNonPublic, boolean loadAbstract, boolean loadRoot) Load a list of beans whose class is type or implementation of the specified type
Iterable<T>	load(Map<String,Object> options, BeanSpec container, Genie genie) This method will load instances of all public and non-abstract classes that implements/extends the interface/class specified as value option

Methods inherited from class org.osgl.inject.loader.ElementLoaderBase

priority

Methods inherited from class java.lang.Object

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

Constructor Detail

TypedElementLoader

public TypedElementLoader()

Method Detail

load

public final Iterable<T> load(Map<String,Object> options,
                              BeanSpec container,
                              Genie genie)

This method will load instances of all public and non-abstract classes that implements/extends the interface/class specified as value option

Parameters:

options - must contains an entry indexed with “value” and the value should be a Class type

container - the bean spec of the container into which the element will be loaded

genie - the dependency injector

Returns:

the list of bean instances whose class is sub class or implementation of hint

filter

public final org.osgl.Osgl.Function<T,Boolean> filter(Map<String,Object> options,
                                                      BeanSpec container)

This method returns a predicate function that test the bean instance against the class specified by hint. If the bean is an instance of the hint class, then the predicate function returns true otherwise it returns false

Parameters:

options - must contains an entry indexed with “value” and the value should be a Class type

container - the bean spec of the container into which the element will be loaded

Returns:

a predicate function whose behavior is described above

load

protected abstract List<Class<? extends T>> load(Class<T> type,
                                                 boolean loadNonPublic,
                                                 boolean loadAbstract,
                                                 boolean loadRoot)

Load a list of beans whose class is type or implementation of the specified type

Parameters:

type - the class or interface specification

loadNonPublic - specify if it should load non public classes

loadAbstract - specify if it should load abstract classes

Returns:

a list of beans as described