context.arch.comm.language
Interface MessageHandler

All Known Implementing Classes:

BaseObject

public interface MessageHandler

This interface specifies all the methods for encoding outgoing messages and decoding incoming messages, as well as the method that handles decoded incoming messages.

Method Summary

DataObject	decodeData(java.io.Reader message) Method to decode the incoming data
java.lang.String	encodeData(DataObject data) Method to encode the incoming data
DataObject	runMethod(java.lang.String methodType, DataObject data) This method handles both the system-defined, callbacks and user-defined RPCs.

Method Detail

decodeData

public DataObject decodeData(java.io.Reader message)
                      throws DecodeException,
                             InvalidDecoderException

Method to decode the incoming data

Parameters:

message - Message to be decoded

Returns:

the decoded message in a DataObject

Throws:

DecodeException - thrown when the given data can not be decoded successfully

InvalidDecoderException - thrown when the decoder can not be run successfully

encodeData

public java.lang.String encodeData(DataObject data)
                            throws EncodeException,
                                   InvalidEncoderException

Method to encode the incoming data

Parameters:

data - Data to be encoded

Returns:

the encoded message

Throws:

EncodeException - thrown when the given data can not be encoded successfully

InvalidEncoderException - thrown when the encoder can not be run successfully

runMethod

public DataObject runMethod(java.lang.String methodType,
                            DataObject data)
                     throws InvalidMethodException,
                            MethodException

This method handles both the system-defined, callbacks and user-defined RPCs.

Parameters:

methodType - Name of method to run

data - DataObject containing data for the method call

Throws:

InvalidMethodException - thrown if specified RPC couldn't be found

MethodException - thrown if specified RPC had an error