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hyperledger-fabricblockchainhyperledgerhyperledger-composer
Raj_Shekhar
Raj_Shekhar

Reputation: 166

Hyperledger fabric composer- query modelling issue

I want to pass multiple parameters(for example array) using Hyperledger query language. like - 

query selectClaimsByMultipleTransanctionID{
  description: "Select all claims based on TransactionID"
  statement:
      SELECT bbc.example.biznet
          WHERE (transactionId **in** _$transactionId)
}

But the "In" operator is not available. Can anyone suggest some other way??

Upvotes: 1

Views: 69

Answers (2)

Isha Padalia
Isha Padalia

Reputation: 1232

Using CONTAINS operator you can pass multiple parameters.

for example

Model File:

participant User identified by id {
  o String id
  o String[] hobbies
}

Query:

query Q6 {
    description: "Select all users based on given hobbies"
    statement:
        SELECT ***.User
            WHERE (hobbies CONTAINS ['driving', 'swimming','...']
}

Upvotes: 0

Paul O'Mahony
Paul O'Mahony

Reputation: 6740

Yes - just use CONTAINS eg. you can do

SELECT ncb1.example.biznet.Claims WHERE (txnArrayValues CONTAINS ["nnn", "nnn", "nnnn"])

where txnArrayValues is String txnArrayValues[] in your model

See Query guide here -> https://hyperledger.github.io/composer/latest/reference/query-language

Upvotes: 1

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