#include <descriptors.h>

Collaboration diagram for impala::SlotDescriptor:

Public Member Functions
SlotId	id () const

const ColumnType &	type () const

TupleId	parent () const

int	col_pos () const

const std::vector< int > &	col_path () const

int	field_idx () const
	Returns the field index in the generated llvm struct for this slot's tuple. More...

int	tuple_offset () const

const NullIndicatorOffset &	null_indicator_offset () const

bool	is_materialized () const

bool	is_nullable () const

int	slot_size () const

std::string	DebugString () const

llvm::Function *	CodegenIsNull (LlvmCodeGen , llvm::StructType tuple)

llvm::Function *	CodegenUpdateNull (LlvmCodeGen , llvm::StructType tuple, bool set_null)

Static Public Member Functions
static bool	ColPathLessThan (const SlotDescriptor a, const SlotDescriptor b)

Private Member Functions
	SlotDescriptor (const TSlotDescriptor &tdesc)

Private Attributes
const SlotId	id_

const ColumnType	type_

const TupleId	parent_

const std::vector< int >	col_path_

const int	tuple_offset_

const NullIndicatorOffset	null_indicator_offset_

const int	slot_idx_

const int	slot_size_
	the byte size of this slot. More...

int	field_idx_

const bool	is_materialized_

llvm::Function *	is_null_fn_
	Cached codegen'd functions. More...

llvm::Function *	set_not_null_fn_

llvm::Function *	set_null_fn_

Friends
class	DescriptorTbl

class	TupleDescriptor

Detailed Description

Definition at line 75 of file descriptors.h.

Constructor & Destructor Documentation

impala::SlotDescriptor::SlotDescriptor ( const TSlotDescriptor & tdesc )

private

Definition at line 50 of file descriptors.cc.

Member Function Documentation

Function * impala::SlotDescriptor::CodegenIsNull	(	LlvmCodeGen *	,
		llvm::StructType *	tuple
	)

Codegen for: bool IsNull(Tuple* tuple) The codegen function is cached.

Definition at line 476 of file descriptors.cc.

References impala::LlvmCodeGen::FnPrototype::AddArgument(), impala::NullIndicatorOffset::bit_mask, impala::NullIndicatorOffset::byte_offset, impala::LlvmCodeGen::context(), impala::LlvmCodeGen::FinalizeFunction(), impala::LlvmCodeGen::GetIntConstant(), impala::LlvmCodeGen::GetType(), is_null_fn_, null_indicator_offset_, impala::TYPE_BOOLEAN, and impala::TYPE_TINYINT.

Function * impala::SlotDescriptor::CodegenUpdateNull	(	LlvmCodeGen *	,
		llvm::StructType *	tuple,
		bool	set_null
	)

Codegen for: void SetNull(Tuple* tuple) / SetNotNull The codegen function is cached.

Definition at line 510 of file descriptors.cc.

References impala::LlvmCodeGen::FnPrototype::AddArgument(), impala::NullIndicatorOffset::bit_mask, impala::NullIndicatorOffset::byte_offset, impala::LlvmCodeGen::context(), impala::LlvmCodeGen::FinalizeFunction(), impala::LlvmCodeGen::GetIntConstant(), null_indicator_offset_, set_not_null_fn_, set_null_fn_, impala::TYPE_TINYINT, and impala::LlvmCodeGen::void_type().

Referenced by impala::HdfsAvroScanner::CodegenMaterializeTuple(), impala::AggregationNode::CodegenUpdateSlot(), impala::PartitionedAggregationNode::CodegenUpdateSlot(), and impala::TextConverter::CodegenWriteSlot().

const std::vector<int>& impala::SlotDescriptor::col_path ( ) const

inline

Definition at line 85 of file descriptors.h.

References col_path_.

Referenced by ColPathLessThan(), impala::HdfsScanNode::ComputeSlotMaterializationOrder(), impala::HdfsParquetScanner::CreateColumnReaders(), and impala::TableDescriptor::IsClusteringCol().

int impala::SlotDescriptor::col_pos ( ) const

inline

Returns the column index of this slot, including partition keys. (e.g., col_pos - num_partition_keys = the table column this slot corresponds to) TODO: This function should eventually be replaced by col_path(). It is currently convenient for table formats for which we only support flat data.

Definition at line 84 of file descriptors.h.

References col_path_.

Referenced by impala::HdfsScanNode::InitTemplateTuple(), impala::DataSourceScanNode::Open(), impala::HdfsRCFileScanner::ProcessRange(), impala::HdfsScanner::ReportColumnParseError(), impala::HdfsAvroScanner::ResolveSchemas(), and impala::HdfsAvroScanner::VerifyTypesMatch().

bool impala::SlotDescriptor::ColPathLessThan	(	const SlotDescriptor *	a,
		const SlotDescriptor *	b
	)

static

Comparison function for ordering slot descriptors by their col_path_. Returns true if 'a' comes before 'b'. Orders the paths as in a depth-first traversal of the schema tree, as follows: