Composite Key functions in Hyperledger

Question

I need to implement composite keys in hyperledger so that I could have a unique key based on the attributes put into the ledger. The function CreateCompositeKey(object

Answer 1

In Hyperledger Fabric there is an example chaincode which shows how to use composite keys, check it out: Marbles

Basically it almost as you said:

key, err := stub.CreateCompositeKey(index, []string{key1, key2, key3})

// Skiped

stub.PutState(key, value)