With...��

�� Object subclass: #BittrexResponse

instanceVariableNames: 'success message result'

classVariableNames: ''

package: 'Bittrex'

�� Object subclass: #BittrexMarketSummary

instanceVariableNames: 'MarketName High Low Volume Last��

�� �� �� �� �� �� �� �� BaseVolume TimeStamp��Bid Ask OpenBuyOrders��

�� �� �� �� �� �� �� �� OpenSellOrders PrevDay Created DisplayMarketName'

classVariableNames: ''

package: 'Bittrex'

this code works great when the response holds good data...

�� ZnClient new��

url: 'https://bittrex.com/api/v1.1/public/getmarketSummary?market=BTC-LTC';

enforceHttpSuccess: true;

accept: ZnMimeType applicationJson;

contentReader: [ :entity | |reader|

reader := (NeoJSONReader on: entity readStream).

reader for: BittrexResponse do: [:m|��

m mapInstVar: #success.

m mapInstVar: #message.

(m mapInstVar: #result) valueSchema: #ResultArray].

reader for: #ResultArray customDo: [ :mapping |��

�� �� �� �� �� �� �� �� �� �� �� ��mapping listOfElementSchema: BittrexMarketSummary ].

reader mapInstVarsFor: BittrexMarketSummary.��

�� �� �� reader nextAs: BittrexResponse ];

�� ��get.

i.e. a raw response looking like this....

(ZnClient new��

url: 'https://bittrex.com/api/v1.1/public/getmarketsummary?market=BTC-LTC';

get) inspect.

==> "'{""success"":true,""message"":"",""result"":[{""MarketName"":""BTC-LTC"",""High"":0.01982450,""Low"":0.01285257,""Volume"":1436429.81313360,""Last"":0.01842000,""BaseVolume"":24841.17217724,""TimeStamp"":""2017-12-13T05:56:25.937"",""Bid"":0.01840001,""Ask"":0.01842000,""OpenBuyOrders"":10140,""OpenSellOrders"":6306,""PrevDay"":0.01439800,""Created"":""2014-02-13T00:00:00""}]}'"

But for bad response looking like this...

(ZnClient new��

url: 'https://bittrex.com/api/v1.1/public/getmarketsummary?market=INVALID';

get) inspect.

==>��{"success":false,"message":"INVALID_MARKET","result":null}

the JSON handling code fails deep in the call stack with an error

�� �� ��"NeoJSONParseError: [ expected"��

which is not so friendly for users of the Bittrex library.����

What are the different/recommended approaches with Zinc��

for catching JSON errors such that I can pass "message"��

as a higher level Error up the stack to the Bittrex user.

��

��cheers -ben