echo.py

Java Communicating Agents是一个用于开发网络反应式信息agent的框架

import java
import jacomma
from jacomma.platform.core import Agent, MessagePattern
from jacomma.icm.type import Symbol

## a print handler
class print_handler( Agent.MessageHandler ):
	def onMessage( self, ag, msg ):
		print msg

def register_print_handler( agent ) :
	agent.registerHandler( MessagePattern.anyPattern(), print_handler() )

class echo_handler( Agent.MessageHandler ):
	def onMessage( self, ag, msg ):
		print msg
		ag.send( msg.replyto(), msg.getContent() )

def register_echo_handler( agent ) :
	agent.registerHandler( MessagePattern.anyPattern(), echo_handler() )

## a handler that displays frames
class frame_handler( Agent.MessageHandler ):
	def onMessage( self, ag, msg ):
		msg.getContent().get( 1 ).show()

## The pattern test object
class frame_test( java.lang.Object ) :
	def equals( self, msg ) :
		l = msg.getContent()
		return java.util.List.isInstance( l ) \
			   and l.size() == 2 \
			   and l.get( 0 ).equals( Symbol( "show" ) ) \
			   and java.awt.Frame.isInstance( l.get( 1 ) )
	
def make_frame_pattern() :
	return MessagePattern.createPattern( java.util.List, frame_test() )

def register_frame_handler( agent ) :
	agent.registerHandler( make_frame_pattern(), frame_handler() )