impala::DescriptorTblBuilder Class Reference

#include <desc-tbl-builder.h>

Collaboration diagram for impala::DescriptorTblBuilder:

Public Member Functions
	DescriptorTblBuilder (ObjectPool *object_pool)
TupleDescBuilder &	DeclareTuple ()
DescriptorTbl *	Build ()

Private Attributes
ObjectPool *	obj_pool_
	Owned by caller. More...
std::vector< TupleDescBuilder * >	tuples_descs_

Detailed Description

Aids in the construction of a DescriptorTbl by declaring tuples and slots associated with those tuples. TupleIds are monotonically increasing from 0 for each DeclareTuple, and SlotIds increase similarly, but are always greater than all TupleIds. Unlike FE, slots are not reordered based on size, and padding is not addded. Example usage: DescriptorTblBuilder builder; builder.DeclareTuple() << TYPE_TINYINT << TYPE_TIMESTAMP; // gets TupleId 0 builder.DeclareTuple() << TYPE_FLOAT; // gets TupleId 1 DescriptorTbl desc_tbl = builder.Build();

Definition at line 36 of file desc-tbl-builder.h.

Constructor & Destructor Documentation

impala::DescriptorTblBuilder::DescriptorTblBuilder

(

ObjectPool *

object_pool

)

Definition at line 25 of file desc-tbl-builder.cc.

Member Function Documentation

DescriptorTbl * impala::DescriptorTblBuilder::Build

(

)

Definition at line 59 of file desc-tbl-builder.cc.

References impala::BitUtil::Ceil(), impala::DescriptorTbl::Create(), impala::MakeSlotDescriptor(), impala::MakeTupleDescriptor(), obj_pool_, impala::Status::ok(), tuples_descs_, impala::TYPE_STRING, and impala::TYPE_VARCHAR.

Referenced by impala::SimpleTupleStreamTest::CreateDescriptors(), impala::SimpleNullStreamTest::CreateDescriptors(), impala::MultiTupleStreamTest::CreateDescriptors(), impala::MultiNullableTupleStreamTest::CreateDescriptors(), and impala::RowBatchListTest::SetUp().

TupleDescBuilder & impala::DescriptorTblBuilder::DeclareTuple

(

)

Definition at line 28 of file desc-tbl-builder.cc.

References impala::ObjectPool::Add(), obj_pool_, and tuples_descs_.

Referenced by impala::SimpleTupleStreamTest::CreateDescriptors(), impala::SimpleNullStreamTest::CreateDescriptors(), impala::MultiTupleStreamTest::CreateDescriptors(), impala::MultiNullableTupleStreamTest::CreateDescriptors(), and impala::RowBatchListTest::SetUp().

Member Data Documentation

ObjectPool* impala::DescriptorTblBuilder::obj_pool_

private

Owned by caller.

Definition at line 45 of file desc-tbl-builder.h.

Referenced by Build(), and DeclareTuple().

std::vector<TupleDescBuilder*> impala::DescriptorTblBuilder::tuples_descs_

private

Definition at line 47 of file desc-tbl-builder.h.

Referenced by Build(), and DeclareTuple().

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The documentation for this class was generated from the following files:

• be/src/testutil/desc-tbl-builder.h
• be/src/testutil/desc-tbl-builder.cc