qry

Demonstrates Query by Range

Setup the vendor dependencies

cd $GOPATH/src/token/qry/v1 [Change the version as needed] ./govendor.sh

This may take a few minutes

================================================ Testing Get State Range functions (token/qry/v1)

1. Launch dev environment in either mode dev-init.sh

2. Setup the env . set-env.sh acme

3. Setup chaincode env. The init function takes args for setting sample data reset-chain-env.sh set-chain-env.sh -n qry -v 1.0 -p token/qry/v1 -I true set-chain-env.sh -c '{"Args": ["init","1","50"]}'

4. Install and instantiate chain.sh install -p

<< Depending on env - you may be prompted to change sequence >>

chain.sh instantiate OR chain.sh approveformyorg chain.sh commit chain.sh init

1. Try out the queries now set-chain-env.sh -q '{"Args": ["GetTokenByRange", "key10", "key12"]}' chain.sh query

set-chain-env.sh -q '{"Args": ["GetTokenByRange", "key1", "key2"]}' chain.sh query

1. Get all rows set-chain-env.sh -q '{"Args": ["GetTokenByRange", "", ""]}' chain.sh query

============================================================ Exercise - extend invoke to support pagintion (token/qry/v1)

Extend the token/qry/v1 such that the funcname = "GetTokenByRangeWithPagination" will invoke the function stub.GetStateByRangeWithPagination

arg[0]="startKey" arg[1]="endKey" arg[3]="pageSize" i.e., number of records/page

Solution=>Solution is in solution/pagination.go

Testing=>

1. Copy the pagination.go to token/qry/v1

2. Uncomment code in invoke function to invoke "GetTokenByRangeWithPagination"

3. Reset the environment dev-init.sh

reset-chain-env.sh set-chain-env.sh -n qry -v 1.0 -p token/qry/v1 set-chain-env.sh -c '{"Args": ["init","1","50"]}' -I true

1. Install & Instantiate the chaincode

chain.sh install -p chain.sh instantiate

1. Get the data with startKey=10 endKey=20 pageSize=5

set-chain-env.sh -q '{"Args": ["GetTokenByRangeWithPagination", "key10", "key20","5"]}' chain.sh query

1. Get all of the data with pagSize=10

set-chain-env.sh -q '{"Args": ["GetTokenByRangeWithPagination", "", "","10"]}' chain.sh query

All data in chunks of 5 / page

set-chain-env.sh -q '{"Args": ["GetTokenByRangeWithPagination", "", "","5"]}' chain.sh query

----------------------- Fabric v 1.4 ------------------

Testing Get State Range functions (token/qry/v1)

1. Launch dev environment in either mode dev-init.sh

2. Setup the env . set-env.sh acme

3. Setup chaincode env. The init function takes args for setting sample data reset-chain-env.sh set-chain-env.sh -n qry -v 1.0 -p token/qry/v1 set-chain-env.sh -c '{"Args": ["init","1","50"]}'

4. Install and instantiate chain.sh install chain.sh instantiate

5. Try out the queries now set-chain-env.sh -q '{"Args": ["GetTokenByRange", "key10", "key12"]}' chain.sh query

set-chain-env.sh -q '{"Args": ["GetTokenByRange", "key1", "key2"]}'

1. Get all rows set-chain-env.sh -q '{"Args": ["GetTokenByRange", "", ""]}'

Exercise - extend invoke to support pagintion

Extend the token/qry/v1 such that the funcname = "GetTokenByRangeWithPagination" will invoke the function stub.GetStateByRangeWithPagination arg[0]="startKey" arg[1]="endKey" arg[3]="pageSize" i.e., number of records/page

Solution=>Solution is in solution/pagination.go

Testing=>

1. Copy the pagination.go to token/qry/v1
2. Uncomment code in ivoke function
3. Reset the environment dev-init.sh set-chain-env.sh -n qry -v 1.0 -p token/qry/v1 set-chain-env.sh -c '{"Args": ["init","1","50"]}'
4. Get the data with startKey=10 endKey=20 pageSize=5 set-chain-env.sh -q '{"Args": ["GetTokenByRangeWithPagination", "key10", "key20","5"]}' chain.sh query
5. Get all of the data with pagSize=10 set-chain-env.sh -q '{"Args": ["GetTokenByRangeWithPagination", "", "","10"]}' chain.sh query

All data in chunks of 5 / page

set-chain-env.sh -q '{"Args": ["GetTokenByRangeWithPagination", "", "","5"]}'

Query Result Interface

https://godoc.org/github.com/hyperledger/fabric/protos/ledger/queryresult