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JanosVM v0.6.0 Java API Documentation: Class JSIHandlerRoot
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edu.utah.janosvm.kit.comm.jsi
Class JSIHandlerRoot

java.lang.Object
  |
  +--edu.utah.janosvm.kit.comm.jsi.JSIHandlerRoot
public class JSIHandlerRoot
extends java.lang.Object
implements JSIHandler

A class that manages the set of root JSI handlers.

Constructor Summary
JSIHandlerRoot()
          Construct an empty root handler set.
 
Method Summary
 void addHandler(java.lang.String name, JSIHandler jh)
          Add a handler with the given name.
 void dispatchMessage(JSIHandlerContext jhc, JSIMessage jm)
          Route a message to the appropriate destination.
 JSIHandler getHandler(java.lang.String name)
           
 void getSuites(JSIMessage jm)
          Add any suites for this handler to the given message.
 void handleMessage(JSIHandlerContext jhc, JSIMessage jm)
          Process the given message.
 JSIHandler remHandler(java.lang.String name)
          Remove a handler with the given name.
 JSIHandler resolveSpecifier(JSIMessage jm, JSIPair jp)
          Resolve the next specifier on the stack.
 java.lang.String toString()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

JSIHandlerRoot

public JSIHandlerRoot()
Construct an empty root handler set.
Method Detail

addHandler

public void addHandler(java.lang.String name,
                       JSIHandler jh)
Add a handler with the given name.
Parameters:
name - The property name for the handler.
jh - The handler.

getHandler

public JSIHandler getHandler(java.lang.String name)

remHandler

public JSIHandler remHandler(java.lang.String name)
Remove a handler with the given name.
Parameters:
name - The property name for the handler.

dispatchMessage

public void dispatchMessage(JSIHandlerContext jhc,
                            JSIMessage jm)
Route a message to the appropriate destination.
Parameters:
jhc - The context to locate/execute the handler within.
jm - The message to dispatch and contains the reply on return.

resolveSpecifier

public JSIHandler resolveSpecifier(JSIMessage jm,
                                   JSIPair jp)
                            throws java.lang.Throwable
Description copied from interface: JSIHandler
Resolve the next specifier on the stack.
Specified by:
resolveSpecifier in interface JSIHandler
Tags copied from interface: JSIHandler
Parameters:
jm - The JSI message to route.
jp - The specifier pair currently being resolved.
Returns:
The Object that can handle the given message or null if there is none.

handleMessage

public void handleMessage(JSIHandlerContext jhc,
                          JSIMessage jm)
Description copied from interface: JSIHandler
Process the given message.
Specified by:
handleMessage in interface JSIHandler
Tags copied from interface: JSIHandler
Parameters:
jhc - The context in which to send/process interim messages.
jm - The received message. When processing is done the message should be cleared and any reply data placed inside it.
Throws:
The - handler can throw any of a number of exceptions/erros.

getSuites

public void getSuites(JSIMessage jm)
Description copied from interface: JSIHandler
Add any suites for this handler to the given message.
Specified by:
getSuites in interface JSIHandler
Tags copied from interface: JSIHandler
Parameters:
jm - The message containing all supported suites.

toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object
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This documentation is Copyright (C) 2000-2002 The University of Utah. All Rights Reserved. See the documentation license for distribution terms and restrictions.
Documentation, software, and mailing lists for the JanosVM can be found at the Janos Project web page: http://www.cs.utah.edu/flux/janos/
Generated on Mar 17, 2002