jfun.yan
Class SimpleDependency

java.lang.Object
  jfun.yan.SimpleDependency

All Implemented Interfaces:

java.io.Serializable, Dependency

public class SimpleDependency
extends java.lang.Object
implements Dependency

A simple implementation of the Dependency interface.
It simply calls ComponentMap.getComponent(Object) and ComponentMap.getComponentOfType(Class) to resolve component parts.
Properties and parameters are resolved by type.

Codehaus.org.

Author:

Ben Yu

See Also:

Serialized Form

Constructor Summary

SimpleDependency(java.lang.Object ckey, ComponentMap cmap)
Create a SimpleDependency object.

Method Summary

java.lang.Object	getArgument(Signature src, int i, java.lang.Class type) Get an instance of an argument.
java.lang.Object	getComponentKey() Get the key of the component being resolved.
ComponentMap	getComponentMap() Get the ComponentMap object.
Dependency	getOriginal() To get the Dependency object before the current one is customized, if any.
Dependency	getParent() Get the dependency for the parent component.
java.lang.Object	getProperty(java.lang.Class component_type, java.lang.Object lkey, java.lang.Class type) Get an instance of a property.
Dependency	seal() To create a Dependency that's free of auto-wiring.
java.lang.Class	verifyArgument(Signature src, int i, java.lang.Class type) Verifies that the argument instance can be resolved.
java.lang.Class	verifyProperty(java.lang.Class component_type, java.lang.Object lkey, java.lang.Class type) Verifies that the property instance can be resolved.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleDependency

public SimpleDependency(java.lang.Object ckey,
                        ComponentMap cmap)

Create a SimpleDependency object.

Parameters:

ckey - the component key.

cmap - the container to look into.

Method Detail

getComponentMap

public ComponentMap getComponentMap()

Description copied from interface: Dependency

Get the ComponentMap object.

Specified by:

getComponentMap in interface Dependency

Returns:

the ComponentMap object.

getArgument

public java.lang.Object getArgument(Signature src,
                                    int i,
                                    java.lang.Class type)

Description copied from interface: Dependency

Get an instance of an argument.

Specified by:

getArgument in interface Dependency

Parameters:

src - the signature of the function requesting this argument.

i - the ordinal position of the argument. Starting from 0.

type - the parameter type.

Returns:

the argument instance.

verifyArgument

public java.lang.Class verifyArgument(Signature src,
                                      int i,
                                      java.lang.Class type)

Description copied from interface: Dependency

Verifies that the argument instance can be resolved. The actual argument type is returned if verification succeeds.

Specified by:

verifyArgument in interface Dependency

Parameters:

src - the signature of the function requesting this argument.

i - the ordinal position of the argument. Starting from 0.

type - the parameter type.

Returns:

the actual type of the argument.

getProperty

public java.lang.Object getProperty(java.lang.Class component_type,
                                    java.lang.Object lkey,
                                    java.lang.Class type)

Description copied from interface: Dependency

Get an instance of a property.

Specified by:

getProperty in interface Dependency

Parameters:

component_type - the type of the component requesting the property.

lkey - the key of the property.

type - the property type.

Returns:

the property instance.

verifyProperty

public java.lang.Class verifyProperty(java.lang.Class component_type,
                                      java.lang.Object lkey,
                                      java.lang.Class type)

Description copied from interface: Dependency

Verifies that the property instance can be resolved. The actual type of the property is returned if verification succeeds.

Specified by:

verifyProperty in interface Dependency

Parameters:

component_type - the type of the component requesting the property.

lkey - the property key.

type - the expected property type.

Returns:

the actual type of the property.

getComponentKey

public java.lang.Object getComponentKey()

Description copied from interface: Dependency

Get the key of the component being resolved.

Specified by:

getComponentKey in interface Dependency

Returns:

the context.

getParent

public Dependency getParent()

Description copied from interface: Dependency

Get the dependency for the parent component. if component 1 is resolved as a part of component 2, component 2 is considered the parent component of component 1. If there's no parent component, null is returned.

Specified by:

getParent in interface Dependency

Returns:

the dependency for the parent component.

getOriginal

public Dependency getOriginal()

Description copied from interface: Dependency

To get the Dependency object before the current one is customized, if any.

Specified by:

getOriginal in interface Dependency

seal

public Dependency seal()

Description copied from interface: Dependency

To create a Dependency that's free of auto-wiring.

Specified by:

seal in interface Dependency