Class RowStream (3.8.0-rc)

Represents the stream of Rows returned from spanner::Client::Read() or spanner::Client::ExecuteQuery().

This is a range defined by the Input Iterators returned from its begin() and end() members. Callers may directly iterate the RowStream instance, which will return a sequence of StatusOr<Row> objects.

For convenience, callers may wrap instances in a StreamOf<std::tuple<...>> object, which will automatically parse each Row into a std::tuple with the specified types.

Constructors

RowStream()

RowStream(std::unique_ptr< ResultSourceInterface >)

Parameter
Name	Description
`source`	`std::unique_ptr< ResultSourceInterface >`

RowStream(RowStream &&)

Parameter
Name	Description
	`RowStream &&`

Operators

operator=(RowStream &&)

Parameter
Name	Description
	`RowStream &&`

Returns
Type	Description
`RowStream &`

Functions

begin()

Returns a RowStreamIterator defining the beginning of this range.

Returns
Type	Description
`RowStreamIterator`

end()

Returns a RowStreamIterator defining the end of this range.

Returns
Type	Description
`RowStreamIterator`

RowsModified() const

Returns the number of rows modified by a DML statement.

Returns
Type	Description
`std::int64_t`

ReadTimestamp() const

Retrieves the timestamp at which the read occurred.

Returns
Type	Description
`std::optional< Timestamp >`