dynamic.py

来自「Java Communicating Agents是一个用于开发网络反应式信息a」· Python 代码 · 共 30 行

import java
import jacomma
from jacomma.icm.type import Symbol
from jacomma.platform.core import Agent, AgentManager, \
	 MessagePattern, AgentObserver, AgentObserverAdapter

# The Message Handler class
class expander( Agent.MessageHandler ):
	def onMessage( self, agent, msg ):
		ptrn = msg.getContent().get( 1 )
		hdlr = msg.getContent().get( 2 )
		agent.registerHandler( ptrn, hdlr )
		print agent, ": Registered Dynamic Handler"

# The pattern test object
class test( java.lang.Object ) :
	def equals( self, msg ) :
		l = msg.getContent()
		return java.util.List.isInstance( l ) \
			   and l.size() == 3 \
			   and l.get( 0 ).equals( Symbol( "add-handler" ) ) \
			   and MessagePattern.isInstance( l.get( 1 ) ) \
			   and Agent.MessageHandler.isInstance( l.get( 2 ) )

def create_pattern() :
	return MessagePattern.createPattern( java.util.List, test() )

def register( ag ) :
	ag.registerHandler( create_pattern(), expander() )