org.onemind.commons.invoke
Interface Invocable

All Known Implementing Classes:

AbstractInvocable

public interface Invocable

An interface for a object provide information about functions that can be invoked on itself (through a key) and API for invoke the method on on itself

Version:

$Id: Invocable.java,v 1.2 2004/08/26 16:08:23 thlee Exp $ $Name: $

Author:

TiongHiang Lee (thlee@onemindsoft.org)

Method Summary

boolean	canInvoke(java.lang.String functionName, java.lang.Object[] args) whether the function can be invoke with the arguments
InvocableFunction	getFunction(java.lang.String functionName, java.lang.Object[] args) Get the function
java.lang.Object	invoke(java.lang.String functionName, java.lang.Object[] args) invoke the function with the arguments provided

Method Detail

canInvoke

public boolean canInvoke(java.lang.String functionName,
                         java.lang.Object[] args)

whether the function can be invoke with the arguments

Parameters:

functionName - the function name

args - the arguments

Returns:

true if can invoke

getFunction

public InvocableFunction getFunction(java.lang.String functionName,
                                     java.lang.Object[] args)

Get the function

Parameters:

functionName - the function name

args - the arguments

Returns:

the function, or null if the function cannot be found

invoke

public java.lang.Object invoke(java.lang.String functionName,
                               java.lang.Object[] args)
                        throws java.lang.Exception

invoke the function with the arguments provided

Parameters:

functionName - the function name

args - the arguments

Returns:

the object returns from the invocation

Throws:

java.lang.Exception - if there's problem invoking the function