Inheritance diagram for impala::ImpalaServer::HS2ColumnarResultSet:

Collaboration diagram for impala::ImpalaServer::HS2ColumnarResultSet:

Public Member Functions
	HS2ColumnarResultSet (const TResultSetMetadata &metadata, TRowSet *rowset=NULL)

virtual	~HS2ColumnarResultSet ()

virtual Status	AddOneRow (const vector< void * > &col_values, const vector< int > &scales)

virtual Status	AddOneRow (const TResultRow &row)

virtual int	AddRows (const QueryResultSet *other, int start_idx, int num_rows)

virtual int64_t	ByteSize (int start_idx, int num_rows)
	Returns the approximate size of the given range of rows in bytes. More...

virtual size_t	size ()
	Returns the size of this result set in number of rows. More...

virtual Status	AddOneRow (const std::vector< void * > &row, const std::vector< int > &scales)=0

int64_t	ByteSize ()
	Returns the approximate size of this result set in bytes. More...

Private Member Functions
void	InitColumns ()

Private Attributes
const TResultSetMetadata &	metadata_

TRowSet *	result_set_

scoped_ptr< TRowSet >	owned_result_set_

int64_t	num_rows_

Detailed Description

Definition at line 123 of file impala-hs2-server.cc.

Constructor & Destructor Documentation

impala::ImpalaServer::HS2ColumnarResultSet::HS2ColumnarResultSet	(	const TResultSetMetadata &	metadata,
		TRowSet *	rowset = `NULL`
	)

inline

Definition at line 125 of file impala-hs2-server.cc.

virtual impala::ImpalaServer::HS2ColumnarResultSet::~HS2ColumnarResultSet ( )

inlinevirtual

Definition at line 134 of file impala-hs2-server.cc.

Member Function Documentation

virtual Status impala::ImpalaServer::HS2ColumnarResultSet::AddOneRow	(	const vector< void * > &	col_values,
		const vector< int > &	scales
	)

inlinevirtual

Definition at line 137 of file impala-hs2-server.cc.

References impala::ExprValueToHS2TColumn(), and impala::OK.

virtual Status impala::ImpalaServer::HS2ColumnarResultSet::AddOneRow ( const TResultRow & row )

inlinevirtual

Add the TResultRow to this result set. When a row comes from a DDL/metadata operation, the row in the form of TResultRow.

Implements impala::ImpalaServer::QueryResultSet.

Definition at line 149 of file impala-hs2-server.cc.

References impala::OK, and impala::TColumnValueToHS2TColumn().

virtual Status impala::ImpalaServer::QueryResultSet::AddOneRow	(	const std::vector< void * > &	row,
		const std::vector< int > &	scales
	)

pure virtualinherited

Add the row (list of expr value) from a select query to this result set. When a row comes from a select query, the row is in the form of expr values (void*). 'scales' contains the values' scales (# of digits after decimal), with -1 indicating no scale specified.

Referenced by impala::ImpalaServer::QueryExecState::FetchRowsInternal().

virtual int impala::ImpalaServer::HS2ColumnarResultSet::AddRows	(	const QueryResultSet *	other,
		int	start_idx,
		int	num_rows
	)

inlinevirtual

Copies rows in the range [start_idx, start_idx + num_rows) from the other result set into this result set. Returns the number of rows added to this result set. Returns 0 if the given range is out of bounds of the other result set.

Implements impala::ImpalaServer::QueryResultSet.

Definition at line 162 of file impala-hs2-server.cc.

References metadata_, num_rows_, result_set_, impala::StitchNulls(), impala::ThriftToType(), and impala::TypeToString().