oracle.cle.util
Class ObjectFactory

java.lang.Object
  |
  +--oracle.cle.util.ObjectFactory

Direct Known Subclasses:

HandlerFactory

public abstract class ObjectFactory

extends java.lang.Object

A Class used for instantiating objects based on entries specified in the deployment.properties file. This is useful when working with interfaces and you would like to have runtime options for defining the implementations of those interfaces.

Typical usage(s):

 
 // You can use a string argument...
 Foo foo = (Foo)ObjectFactory.getObject("foo");
 // .. or a class argument...
 Foo foo2 = (Foo)ObjectFactory.getObject(mypackage.Foo.class);
 
 

Here are what the deployment.properties file entries would look like for the example given above:

 
 # use a key to indicate which class to instantiate
 foo=oracle.demo.foo.FooImpl
 # use a fully qualified classname to indicate which class to instantiate
 mypackage.Foo=oracle.demo.foo.FooImpl
 
 

NOTE: The concrete class returned by the factory DOES NOT need to end with the Impl suffix.

See Also:

DeploymentManager

Constructor Summary

ObjectFactory()

Method Summary

static java.lang.Object	getObject(java.lang.Class aClass) Returns the appropriate object implementation for the specified Class' fully qualified name.
static java.lang.Object	getObject(java.lang.String key) Returns the appropriate object implementation for the specified String.
static void	main(java.lang.String[] args) A test expecting the following to be present in deployment.properties:

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectFactory

public ObjectFactory()

Method Detail

getObject

public static java.lang.Object getObject(java.lang.String key)
                                  throws java.lang.Exception

Returns the appropriate object implementation for the specified String. NOTE: The string must be the key of an entry in the deployment.properties file. The value of the property must be the class that will be instantiated.

getObject

public static java.lang.Object getObject(java.lang.Class aClass)
                                  throws java.lang.Exception

Returns the appropriate object implementation for the specified Class' fully qualified name. NOTE: The class' fully qualified name must be the key of an entry in the deployment.properties file. The value of the property must be the class that will be instantiated.

main

public static void main(java.lang.String[] args)

A test expecting the following to be present in deployment.properties:

 foo=java.util.Hashtable
 java.lang.String=java.util.Vector