org.openide.loaders
Class InstanceSupport.Instance

java.lang.Object
  |
  +--org.openide.loaders.InstanceSupport.Instance

All Implemented Interfaces:

InstanceCookie, InstanceCookie.Of, Node.Cookie

Enclosing class:

InstanceSupport

public static class InstanceSupport.Instance

extends Object

implements InstanceCookie.Of

Trivial supporting instance cookie for already-existing objects.

Inner classes inherited from class org.openide.cookies.InstanceCookie

InstanceCookie.Of, InstanceCookie.Origin

Constructor Summary

InstanceSupport.Instance(Object obj)
Create a new instance cookie.

Method Summary

Class	instanceClass() The representation type that may be created as instances.
Object	instanceCreate() Create an instance.
String	instanceName() The name of instanceClass().
boolean	instanceOf(Class type) Query to found out if the object created by this cookie is instance of given type.

Methods inherited from class java.lang.Object

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

Constructor Detail

InstanceSupport.Instance

public InstanceSupport.Instance(Object obj)

Create a new instance cookie.

Parameters:

obj - the object to represent in this cookie

Method Detail

instanceName

public String instanceName()

Description copied from interface: InstanceCookie

The name of InstanceCookie.instanceClass().

Specified by:

instanceName in interface InstanceCookie

Following copied from interface: org.openide.cookies.InstanceCookie

Returns:

the instance class name

instanceClass

public Class instanceClass()

Description copied from interface: InstanceCookie

The representation type that may be created as instances. Can be used to test whether the instance is of an appropriate class without actually creating it.

Specified by:

instanceClass in interface InstanceCookie

Following copied from interface: org.openide.cookies.InstanceCookie

Returns:

the representation class of the instance

Throws:

IOException - if an I/O error occurred

ClassNotFoundException - if a class was not found

instanceCreate

public Object instanceCreate()

Description copied from interface: InstanceCookie

Create an instance.

Specified by:

instanceCreate in interface InstanceCookie

Following copied from interface: org.openide.cookies.InstanceCookie

Returns:

the instance of type InstanceCookie.instanceClass() (or a subclass)

Throws:

IOException - if an I/O error occured

ClassNotFoundException - if a class was not found

instanceOf

public boolean instanceOf(Class type)

Description copied from interface: InstanceCookie.Of

Query to found out if the object created by this cookie is instance of given type. The same code as:

    Class actualClass = instanceClass ();
    result = type.isAsignableFrom (actualClass);
 

But this can prevent the class actualClass to be loaded into the Java VM.

Specified by:

instanceOf in interface InstanceCookie.Of

Following copied from interface: org.openide.cookies.InstanceCookie.Of

Parameters:

type - the class type we want to check

Returns:

true if this cookie can produce object of given type