Defines the interface for RowStream implementations.
The RowStream class represents a stream of Rows returned from spanner::Client::Read() or spanner::Client::ExecuteQuery(). There are different implementations depending the the RPC. Applications can also mock this class when testing their code and mocking the spanner::Client behavior.
Functions
NextRow()
Returns the next row in the stream.
| Returns | |
|---|---|
| Type | Description |
StatusOr< spanner::Row > |
if the stream is interrupted due to a failure the |
Metadata()
Returns metadata about the result set, such as the field types and the transaction id created by the request.
See Also
https://cloud.google.com/spanner/docs/reference/rpc/google.spanner.v1#resultsetmetadata for more information.
| Returns | |
|---|---|
| Type | Description |
absl::optional< google::spanner::v1::ResultSetMetadata > |
|
Stats() const
Returns statistics about the result set, such as the number of rows, and the query plan used to compute the results.
See Also
https://cloud.google.com/spanner/docs/reference/rpc/google.spanner.v1#resultsetstats for more information.
| Returns | |
|---|---|
| Type | Description |
absl::optional< google::spanner::v1::ResultSetStats > |
|