org.onemind.commons.invoke
Class AbstractInvocable

java.lang.Object
  org.onemind.commons.invoke.AbstractInvocable

All Implemented Interfaces:

Invocable

Direct Known Subclasses:

ReflectionWrapperInvocable

public abstract class AbstractInvocable
extends java.lang.Object
implements Invocable

An invocable that contain a list of invocable functions to be invoke upon. In current implementation, it can only contains on function with the specific name (regardless of arg types) TODO: improve to allow multiple functions with same name (different args)

Version:

$Id: AbstractInvocable.java,v 1.1 2005/01/24 05:51:36 thlee Exp $ $Name: $

Author:

TiongHiang Lee (thlee@onemindsoft.org)

Constructor Summary

AbstractInvocable()

Method Summary

void	addFunction(InvocableFunction function) Add an function
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.Class[] argTypes)
InvocableFunction	getFunction(java.lang.String functionName, java.lang.Object[] args) Get the function
java.util.Collection	getFunctions() Get all the functions
java.lang.Object	invoke(java.lang.String functionName, java.lang.Object[] args) invoke the function with the arguments provided

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractInvocable

public AbstractInvocable()

Method Detail

addFunction

public void addFunction(InvocableFunction function)

Add an function

Parameters:

functionName - the function name

function - the function

getFunction

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

Get the function

Specified by:

getFunction in interface Invocable

Parameters:

functionName - the function name

args - the arguments

Returns:

the function, or null if the function cannot be found

getFunction

public InvocableFunction getFunction(java.lang.String functionName,
                                     java.lang.Class[] argTypes)

canInvoke

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

whether the function can be invoke with the arguments

Specified by:

canInvoke in interface Invocable

Parameters:

functionName - the function name

args - the arguments

Returns:

true if can invoke

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

Specified by:

invoke in interface Invocable

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

getFunctions

public java.util.Collection getFunctions()

Get all the functions

Returns:

the functions