On 13 December 2017 at 14:40, Sven Van Caekenberghe <s...@stfx.eu> wrote:
> Yeah, that is the main problem with JSON. It cannot capture that > variability in its own spec. Sure, there are tons of extensions on top of > JSON to address these aspects, but NeoJSON only deals with the raw spec. > And any server can use its own version. > > Simple answer is indeed: getmarkets and getticker return different schema, > since you know what you call, you can map accordingly. (And hope the server > does not do further variability). There cannot be one global mapping. > Thats cool. I'm not looking for one global mapping to simultaneously handle getmarkets and getticker together. I'm just looking to handle getticker in isolation. I can't work that part out. cheers -ben > > > On 13 Dec 2017, at 05:37, Ben Coman <b...@openinworld.com> wrote: > > > > Hi Sven (et al), > > > > On 10 December 2017 at 11:45, Ben Coman <b...@openinworld.com> wrote: > > > > 3. Finally parse into real objects the nested level holding the data you > really want... > > > > Object subclass: #Market > > instanceVariableNames: 'MarketCurrency BaseCurrency > MarketCurrencyLong BaseCurrencyLong MinTradeSize MarketName IsActive > Created Notice IsSponsored LogoUrl' > > classVariableNames: '' > > package: 'Bittrex' > > > > (ZnClient new > > url: 'https://bittrex.com/api/v1.1/public/getmarkets'; > > 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: > #ArrayOfMarkets]. > > reader for: #ArrayOfMarkets customDo: [ :mapping | mapping > listOfElementSchema: Market ]. > > reader mapInstVarsFor: Market. > > reader nextAs: BittrexResponse ]; > > get) inspect. > > > > ==>BittrexResponse > > success => true > > message => '' > > result => an Array(a Market(LTC) a Market(DOGE) a Market(VTC) a > Market(PPC) a Market(FTC) a Market(RDD) > > ... Market(POWR) a Market(BTG) a Market(BTG) a Market(BTG) a Market(ADA) > a Market(ENG) a Market(ENG)) > > > > So the code of [3.] above works fine when the raw response looks like > this... > > (ZnClient new > > url: 'https://bittrex.com/api/v1.1/public/getmarkets'; > > get) inspect. > > ==> {"success":true, > > "message":"", > > "result": [{"MarketName":"BTC-LTC},{"MarketName":"BTC-NXT}] > > } > > > > But of course [3.] doesn't work when the raw response looks like this... > > (ZnClient new > > url: 'https://bittrex.com/api/v1.1/public/getticker?market=BTC-LTC > '; > > get) inspect. > > ==> {"success":true, > > "message":"", > > "result":{"Bid":0.01765465,"Ask":0.01769000,"Last":0. > 01763350} > > } > > > > since result is a json-object not a json-array. But I can't work out > > how to map the JSON object into the 'result' instance variable of > BittrexResponse, > > where... > > > > BittrexObject subclass: #BittrexTicker > > instanceVariableNames: 'Bid Ask Last' > > classVariableNames: '' > > package: 'Bittrex' > > > > > > My best guesses so far are uncommenting either [A.] or [B.] below... > > > > (ZnClient new > > url: 'https://bittrex.com/api/v1.1/public/getticker?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: > #BittrexTicker]. > > "A. reader for: BittrexTicker do: [ :m| > > m mapInstVar: #Bid]." > > "B. reader for: #BittrexTicker customDo: [ :mapping | > > mapping mapWithValueSchema: BittrexTicker]." > > reader nextAs: BittrexResponse ]; > > get). > > > > > > Can you advise what formulation is required? > > cheers -ben > > >
