Hyperledger作曲家查询返回空数组

Question

我有我的query.qry文件中定义以下查询：

query selectItemsByOwner {
  description: "Select all items based on their owner uid"
  statement:
      SELECT org.example.auctchain.Item
          WHERE (owner.uid == _$uid)
}

我的ACL许可文件具有以下规则：

rule Auctioneer {
description: "Allow the auctioneer full access"
participant: "org.example.auctchain.Auctioneer"
operation: ALL
resource: "org.example.auctchain.*"
action: ALLOW
}

rule Member {
description: "Allow the member read access"
participant: "org.example.auctchain.Member"
operation: READ
resource: "org.example.auctchain.*"
action: ALLOW
}

rule VehicleOwner {
description: "Allow the owner of a vehicle total access"
participant(m): "org.example.auctchain.Member"
operation: ALL
resource(v): "org.example.auctchain.Item"
condition: (v.owner.getIdentifier() == m.getIdentifier())
action: ALLOW
}

rule VehicleListingOwner {
description: "Allow the owner of a vehicle total access to their 
vehicle listing"
participant(m): "org.example.auctchain.Member"
operation: ALL
resource(v): "org.example.auctchain.ItemListing"
condition: (v.vehicle.owner.getIdentifier() == m.getIdentifier())
action: ALLOW
}

rule SystemACL {
description:  "System ACL to permit all access"
participant: "org.hyperledger.composer.system.Participant"
operation: ALL
resource: "org.hyperledger.composer.system.**"
action: ALLOW
}

rule NetworkAdminUser {
description: "Grant business network administrators full access to 
user resources"
participant: "org.hyperledger.composer.system.NetworkAdmin"
operation: ALL
resource: "**"
action: ALLOW
}

rule NetworkAdminSystem {
description: "Grant business network administrators full access to 
system resources"
participant: "org.hyperledger.composer.system.NetworkAdmin"
operation: ALL
resource: "org.hyperledger.composer.system.**"
action: ALLOW
}

而我的CTO文件定义如下所涉及的资产和参与者：

asset Item identified by itemId {
o String itemId
o String name
o ItemType type
--> Member owner
}

abstract participant User identified by uid {
o String uid
o String email
o String firstName
o String lastName
o String phoneNumber
}

participant Member extends User {
o Double balance
}

我更新了我的package.json版本并创建了BNA文件，然后安装它在我的网络上，也做了升级，一切都很好。问题是当我从任我角应用程序中执行此查询，或从作曲REST API资源管理器中，都返回一个空数组。有没有人有这个问题？我似乎无法找到修复，它的真正困扰我，因为我真的需要我的应用程序执行查询。

Answer 1

首先，文件名是queries.qry。

按我的了解，目前它不是由Hyperledger Composer支持。

你可以在这里做一两件事，修改查询，如下：

query selectItemsByOwner {
  description: "Select all items based on their owner uid"
  statement:
      SELECT org.dd2.Item
          WHERE (owner == _$owner_res)
}

当你执行查询，充分的资源字符串作为输入，如下图所示：

resource:org.dd2.Member#m1