Hyperledger Composer REST API调用在概念中的某些变量上失败

Question

我的资产“AirPollution”中有一些概念，例如“CarbonMonoxide”。但是如果我在终端中调用rest-composer-server，它会给我一些错误：

REST server error

这是我的代码段：

asset AirPollutionData identified by airPollutionDataId {
  o String airPollutionDataId
  o String location
  o DateTime datetime
  o TransferStatus status default="FOR_SALE"
  o CO co
  o NO2 no2
  o O3 o3
  o PM10 pm10
  o PM25 pm25
  o SO2 so2
  --> Member owner
}

concept CO {
  o String pollutant_description default="Carbon monoxide"
  o String units default="ppb"
  o Double concentration 
}  

concept NO2 {
  o String pollutant_description default="Nitrogen dioxide"
  o String units default="ppb"
  o Double concentration
}

concept O3 {
  o String pollutant_description default="Ozone"
  o String units default="ppb"
  o Double concentration
}
  
concept PM10 {
  o String pollutant_description default="Inhalable particulate matter (<10µm)"
  o String units default="ug/m3"
  o Double concentration
}

concept PM25 {
  o String pollutant_description default="Fine particulate matter (<2.5µm)"
  o String units default="ug/m3"
  o Double concentration
}
  
concept SO2 {
  o String pollutant_description default="Sulfur dioxide"
  o String units default="ug/m3"
  o Double concentration
}  

这里出了什么问题？在我原始的角度应用程序中，如果我想添加资产，我没有看到来自概念的默认值，例如污染物描述或单位。

这就是我的意思：default values gone

Answer 1

它对我有用。请参阅下面创建的AirPollutionData资产的屏幕截图。

Swagger消息只是忽略了Concepts（它们不是资源端点）。

您发布的模型有错误：

您在下面这两个缺少定义（我创建了这些示例，只是为了让它起作用）：

concept TransferStatus {
    o String id
}
participant Member identified by id {
   o String id
}

{ "$class": "org.acme.trading.AirPollutionData", "airPollutionDataId": "3941", "location": "Labore nisi esse incididunt non.", "datetime": "2018-03-05T16:59:23.239Z", "status": { "$class": "org.acme.trading.TransferStatus", "id": "In aute." }, "co": { "$class": "org.acme.trading.CO", "pollutant_description": "Carbon monoxide", "units": "ppb", "concentration": 248.394 }, "no2": { "$class": "org.acme.trading.NO2", "pollutant_description": "Nitrogen dioxide", "units": "ppb", "concentration": 50.636 }, "o3": { "$class": "org.acme.trading.O3", "pollutant_description": "Ozone", "units": "ppb", "concentration": 144.997 }, "pm10": { "$class": "org.acme.trading.PM10", "pollutant_description": "Inhalable particulate matter (<10µm)", "units": "ug/m3", "concentration": 0.595 }, "pm25": { "$class": "org.acme.trading.PM25", "pollutant_description": "Fine particulate matter (<2.5µm)", "units": "ug/m3", "concentration": 60.074 }, "so2": { "$class": "org.acme.trading.SO2", "pollutant_description": "Sulfur dioxide", "units": "ug/m3", "concentration": 189.644 }, "owner": "resource:org.acme.trading.Member#1" }

至于在Angular生成的字段中没有显示的默认值 - 我会发现。默认情况下，Playground中提供了这些默认设置，但不确定骨架应用程序中是否提供了这些默认设置（确切地说它是什么，供开发人员使用）。当我对此有更多了解时，我会编辑这个。