org.objectweb.jonathan.libs.kernel.decoders
Class JImplicitFactory

java.lang.Object
  org.objectweb.jonathan.libs.kernel.JComponent
      org.objectweb.jonathan.libs.kernel.decoders.JImplicitFactory

All Implemented Interfaces:

Component, Factory, Forkable, Initializer, MultiFactory

public class JImplicitFactory

extends JComponent

implements Factory, MultiFactory, Initializer

Runtime implicit factory component. Provides the basic behaviour of a MultiFactory: holds a set of implementation alternatives (given at the object's creation) and instantiates one of them, according to a given chosen alternative ID.

Field Summary

Fields inherited from class org.objectweb.jonathan.libs.kernel.JComponent

int_value, reference, type, value

Constructor Summary

JImplicitFactory(java.util.List _alternatives)
Creates a new implicit factory whose implementation alternatives are listed in _alternatives as JAlternatives.

Method Summary

Component	duplicate() Creates a new implicit factory holding the same implementation alternatives.
void	initialize(java.lang.Object _obj, Context _c, int _alternative) Implementation of the Initializer interface's initialize method.
java.lang.Object	newObject(Context _c) From Factory interface.
java.lang.Object	newObject(Context _c, int _alternative, Instanciable _instance) Returns a new instance of the implicit factory's implementation alternative whose ID is _alternative.
java.lang.String	toString()

Methods inherited from class org.objectweb.jonathan.libs.kernel.JComponent

fork, getComponent, getElement, getFactoryValue, getIntValue, getReference, getType, getValue, getValue, internalFork, reset, setReference

Methods inherited from class java.lang.Object

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

Constructor Detail

JImplicitFactory

public JImplicitFactory(java.util.List _alternatives)

Creates a new implicit factory whose implementation alternatives are listed in _alternatives as JAlternatives.

Method Detail

duplicate

public Component duplicate()

Creates a new implicit factory holding the same implementation alternatives.

Overrides:

duplicate in class JComponent

newObject

public java.lang.Object newObject(Context _c)
                           throws JonathanException

From Factory interface. Returns a new instance of the single alternative's implementation by calling its constructor; _c is the local Context containing the required instanciation parameters.

Specified by:

newObject in interface Factory

Parameters:

_c - contains the instanciation parameter

Returns:

an new instance of the implicit factory's single alternative

Throws:

JonathanException - if something goes wrong.

newObject

public java.lang.Object newObject(Context _c,
                                  int _alternative,
                                  Instanciable _instance)
                           throws JonathanException

Returns a new instance of the implicit factory's implementation alternative whose ID is _alternative. In the single implementation alternative case, it works only if the single alternative's ID is the given one (although newObject(Context) would do it anyway).

Specified by:

newObject in interface MultiFactory

Parameters:

_c - where the instanciation parameters are found

_alternative - the alternative to instantiate

_instance - the method's caller.

Returns:

an new _alternative's instance

Throws:

JonathanException - if something goes wrong.

initialize

public void initialize(java.lang.Object _obj,
                       Context _c,
                       int _alternative)
                throws JonathanException

Implementation of the Initializer interface's initialize method. Initializes an instance of the implicit factory's implementation alternative whose ID is _alternative by calling its setters. In the single implementation alternative case, it works only if the single alternative's ID is the given one (although initialize(Object,Context) would do it anyway).

Specified by:

initialize in interface Initializer

Parameters:

_obj - the object to initialize

_c - where the initialisation parameters are found

_alternative - the alternative to instantiate

Throws:

JonathanException - if something goes wrong.

toString

public java.lang.String toString()

Overrides:

toString in class JComponent