org.eclipse.rap.rwt
Class SingletonUtil

java.lang.Object
  org.eclipse.rap.rwt.SingletonUtil

public final class SingletonUtil
extends java.lang.Object

SingletonUtil creates and manages a unique instance of a given type with session scope. This means that in the context of one user session getSessionInstance(Class) will always return the same object, but for different user sessions the returned instances will be different.

Usage:

 public class FooSingleton {

   private FooSingleton() {}

   public static FooSingleton getInstance() {
     return SingletonUtil.getSessionInstance( FooSingleton.class );
   }
 }
 

Since:

2.0

Constructor Summary

SingletonUtil()

Method Summary

static <T> T

getSessionInstance(java.lang.Class<T> type) Returns the singleton instance of the specified type that is stored in the current session context.

Methods inherited from class java.lang.Object

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

Constructor Detail

SingletonUtil

public SingletonUtil()

Method Detail

getSessionInstance

public static <T> T getSessionInstance(java.lang.Class<T> type)

Returns the singleton instance of the specified type that is stored in the current session context. If no instance exists yet, a new one will be created. The specified type must have a parameterless constructor.

Parameters:

type - specifies the session singleton instance type.

Returns:

the unique instance of the specified type that is associated with the current user session context.