Get order engine simulation exchange error

[hlevel]

In the simulation exchange, the acquisition engine will use this code In this case, it will be judged whether the. Currencydata is null before obtaining the metadata I don't think we should throw exceptions.

Although the configuration is simulated JSON can solve the problem. Or do you want a default scheme. Version: xchange-simulated-5.0.13.jar

MatchingEngine getEngine(CurrencyPair currencyPair) {
        CurrencyPairMetaData currencyPairMetaData = (CurrencyPairMetaData)this.getExchangeMetaData().getCurrencyPairs().get(currencyPair);
        if (currencyPairMetaData == null) {
            throw new CurrencyPairNotValidException("Currency pair " + currencyPair + " not known", currencyPair);
        } else {
            return this.engineFactory.create(currencyPair, currencyPairMetaData == null ? 8 : currencyPairMetaData.getPriceScale(), currencyPairMetaData == null ? BigDecimal.ZERO : currencyPairMetaData.getMinimumAmount());
        }
    }

After modification

MatchingEngine getEngine(CurrencyPair currencyPair) {
        CurrencyPairMetaData currencyPairMetaData = (CurrencyPairMetaData)this.getExchangeMetaData().getCurrencyPairs().get(currencyPair);
        return this.engineFactory.create(currencyPair, currencyPairMetaData == null ? 8 : currencyPairMetaData.getPriceScale(), currencyPairMetaData == null ? BigDecimal.ZERO : currencyPairMetaData.getMinimumAmount());
    }