simplequeryexecutor

Documentation

Index

• type QueryExecutor
  • func New(db extstatedb.StateDB) *QueryExecutor
  • func (sqe *QueryExecutor) GetPrivateDataHash(ns, coll, key string) ([]byte, error)
  • func (sqe *QueryExecutor) GetState(ns string, key string) ([]byte, error)
  • func (sqe *QueryExecutor) GetStateRangeScanIterator(ns string, startKey string, endKey string) (ledger.ResultsIterator, error)

Types

type QueryExecutor

type QueryExecutor struct {
	// contains filtered or unexported fields
}

QueryExecutor is a simple query executor that reads data directly from the provided state database without acquiring a ledger read lock.

func New

func New(db extstatedb.StateDB) *QueryExecutor

New returns a new query executor that reads data directly from the provided state database

func (*QueryExecutor) GetPrivateDataHash

func (sqe *QueryExecutor) GetPrivateDataHash(ns, coll, key string) ([]byte, error)

GetPrivateDataHash gets the hash of the value of a private data item identified by a tuple <namespace, collection, key>

func (*QueryExecutor) GetState

func (sqe *QueryExecutor) GetState(ns string, key string) ([]byte, error)

GetState gets the value for given namespace and key. For a chaincode, the namespace corresponds to the chaincodeId

func (*QueryExecutor) GetStateRangeScanIterator

func (sqe *QueryExecutor) GetStateRangeScanIterator(ns string, startKey string, endKey string) (ledger.ResultsIterator, error)

GetStateRangeScanIterator returns an iterator that contains all the key-values between given key ranges.