edu.cuny.cat.server
Class TransactionValidator

java.lang.Object
  edu.cuny.cat.server.TransactionValidator

All Implemented Interfaces:

edu.cuny.config.param.Parameterizable

public class TransactionValidator
extends java.lang.Object
implements edu.cuny.config.param.Parameterizable

A class used by the game server to check the validity of a transaction.

Version:

$Revision: 1.6 $

Author:

Jinzhong Niu

Constructor Summary

TransactionValidator()

Method Summary

void	check(Shout ask, Shout bid, double price) checks whether a transaction from a specialist is valid or not.
void	setup(edu.cuny.config.param.ParameterDatabase parameters, edu.cuny.config.param.Parameter base)

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionValidator

public TransactionValidator()

Method Detail

setup

public void setup(edu.cuny.config.param.ParameterDatabase parameters,
                  edu.cuny.config.param.Parameter base)

Specified by:

setup in interface edu.cuny.config.param.Parameterizable

check

public void check(Shout ask,
                  Shout bid,
                  double price)
           throws IllegalTransactionException

checks whether a transaction from a specialist is valid or not. To be valid, the transaction price must be no lower than the ask price and no higher than the bid price. IllegalTransactionException will be thrown if the transaction is found illegal.

Parameters:

ask - the ask in the transaction request

bid - the bid in the transaction request

price - the transaction price in the transaction request

Throws:

IllegalTransactionException - thrown when the transaction is invalid