Re: [Jython-users] use jython object from java

[Sherrell, D. <dsh...@ad...>]

Allright,

So I have a MessageInterface interface in Java as:

package jyinterface.interfaces;

public interface MessageInterface {
	
	public int getSource();
	public int getDestination();
	public int getLength();
	public int getVersion();
	public int getMessageID();
	
	public int setSource(int val);
	public int setDestination(int val);
	public int setLength(int val);
	public int setVersion(int val);
	public int setMessageID(int val);

}


And a jython object that implements the interface:

class Message(MessageInterface):
	def __init__(self):
		"""@sig Message()"""
		
		self.length = 0
		self.msg_verion = 0
		self.source = 0
		self.destination = 0
		self.Message_ID = 0

		f=open(path + 'Message.txt','r')

		#dictionary containing class attribute information useful for encode/decode
		#has keys: type complex_name bits name dimensions
		self.properties = pickle.load(f)
		f.close()



	def getLength(self):
		return self.length
	
	def getSource(self):
		return self.source
	
	def getDestination(self):
		return self.destination
	
	def getMessageID(self):
		return self.Message_ID
	
	def getVersion(self):
		return self.msg_version
	
	def setLength(self, val):
		self.length = val
		
	
	def setSource(self, val):
		self.source = val
		
	def setDestination(self, val):
		self.destination = val
		
	def setMessageId(self, val):
		self.Message_ID = val
		
	def setVersion(self, val):
		self.msg_version = val
		
		
there is another jython object that inherits the Message object like this:

	class Network_Definition_Fields(NetworkDefinitionInterface,Message):
	def __init__(self, message = None):

		Message.__init__(self)
		self.number_of_subnets = None
		self.Preset_Net_Profiles = None
		....
		....


when this object is instantiated in the jython code and Message.__init__ is invoked, I get an error self.length = val RunTimeError: maximum recursion depth exceeded


A little background..i have existing python code that I am trying to integrate with java.  So I'm using jython as the glue rather than being in a situation where I am developing code from scratch.  Could my problem here be that I am inheriting from both the NetworkDefinitionInterface and Message?  

Your help is greatly appreciated.

Thanks,
Dana

-----Original Message-----
From: Alex Grönholm [mailto:ale...@ne...] 
Sent: Tuesday, February 16, 2010 9:08 AM
To: jyt...@li...
Subject: Re: [Jython-users] use jython object from java

16.2.2010 18:48, Sherrell, Dana kirjoitti: 

	Hello, 

	 

	I am fairly new to java/jython integration so please be patient.  I followed the jython factory examples to use the interpreter to call my jython objects and all is well until I need to access a user defined object in jython from java.  The examples that I have seen use simple types in the interfaces.i need to access a complex data type.  How do I access a user defined type - defined in the jython module - in my java app?

	 

	So if my interface looked something like:

	 

	public interface AFE_ClientInterface {

	 

	      public int messageId();

	      public String clientName();

	      public NetworkDefinition getNetworkDefinition();

	      ..

	      ..

	 

	      public void shutDown();

	 

	 

	 

	}

	 

	How do I translate the jython NetworkDefinition object into one that java can understand?

	 

	Thanks,

	Dana

	 
	

You have to have a Java interface for NetworkDefinition, and the corresponding Jython class must inherit from that.