fabric: github.com/hyperledger/fabric/core/handlers/validation/api/state Index | Files

package validation

import "github.com/hyperledger/fabric/core/handlers/validation/api/state"

Index

Package Files

state.go

type QueryResult Uses

type QueryResult interface{}

QueryResult - a general interface for supporting different types of query results. Actual types differ for different queries

type ResultsIterator Uses

type ResultsIterator interface {
    // Next returns the next item in the result set. The `QueryResult` is expected to be nil when
    // the iterator gets exhausted
    Next() (QueryResult, error)
    // Close releases resources occupied by the iterator
    Close()
}

ResultsIterator - an iterator for query result set

type State Uses

type State interface {
    // GetStateMultipleKeys gets the values for multiple keys in a single call
    GetStateMultipleKeys(namespace string, keys []string) ([][]byte, error)

    // GetStateRangeScanIterator returns an iterator that contains all the key-values between given key ranges.
    // startKey is included in the results and endKey is excluded. An empty startKey refers to the first available key
    // and an empty endKey refers to the last available key. For scanning all the keys, both the startKey and the endKey
    // can be supplied as empty strings. However, a full scan should be used judiciously for performance reasons.
    // The returned ResultsIterator contains results of type *KV which is defined in protos/ledger/queryresult.
    GetStateRangeScanIterator(namespace string, startKey string, endKey string) (ResultsIterator, error)

    // GetStateMetadata returns the metadata for given namespace and key
    GetStateMetadata(namespace, key string) (map[string][]byte, error)

    // GetPrivateDataMetadataByHash gets the metadata of a private data item identified by a tuple <namespace, collection, keyhash>
    GetPrivateDataMetadataByHash(namespace, collection string, keyhash []byte) (map[string][]byte, error)

    // Done releases resources occupied by the State
    Done()
}

State defines interaction with the world state

type StateFetcher Uses

type StateFetcher interface {
    validation.Dependency

    // FetchState fetches state
    FetchState() (State, error)
}

StateFetcher retrieves an instance of a state

Package validation imports 1 packages (graph) and is imported by 7 packages. Updated 2018-11-07. Refresh now. Tools for package owners.