TupleNLJ Class Reference

#include <tupleNLJ.h>

Inheritance diagram for TupleNLJ:

Collaboration diagram for TupleNLJ:

Public Member Functions
	TupleNLJ (FileId outer_id, FileId inner_id, FileId result_id, std::vector< FieldId > outer_fields, std::vector< FieldId > inner_fields, Catalog *catalog)
	Constructor for Join operation. Join subclasses use this constructor.
	~TupleNLJ ()
	Destructor for TupleNLJ. Deletes dynamic member variables.
void	runOperation ()
	Runs the operation.
Public Member Functions inherited from Join
	Join (FileId outer_id, FileId inner_id, FileId result_id, std::vector< FieldId > outer_fields, std::vector< FieldId > inner_fields, Catalog *catalog)
	Constructor for Join operation. Join subclasses use this constructor.
	~Join ()
	Destructor for the Join Operation.
Public Member Functions inherited from Operation
	Operation (FileId result_id, Catalog *catalog)
	Constructor for the Operation class. Because Operation is an abstract class, an object cannot be created, but this constructor is used by derived classes.
virtual	~Operation ()
	Destructor for the Operation class. Cleans up dynamic memory in result state.

Additional Inherited Members
Protected Member Functions inherited from Operation
void	_initState (FileId file_id, std::vector< FieldId > fields, fileState *state)
	Performs the file and temporary record setup for relational operators.
void	_delState (fileState *file_state)
	Deletes objects created in relop structs.
Protected Attributes inherited from Join
fileState	outer
fileState	inner
std::vector< FieldId >	outer_fields
std::vector< FieldId >	inner_fields
Protected Attributes inherited from Operation
fileState	result_state
Catalog *	catalog

Detailed Description

TupleNLJ: defines the tuple nested loop join version, derived from Join

Constructor & Destructor Documentation

TupleNLJ()

TupleNLJ::TupleNLJ	(	FileId	outer_id,
		FileId	inner_id,
		FileId	result_id,
		std::vector< FieldId >	outer_fields,
		std::vector< FieldId >	inner_fields,
		Catalog *	catalog
	)

Constructor for Join operation. Join subclasses use this constructor.

Parameters

outer_id.	FileId of the outer relation file.
inner_id.	FileId of the inner relation file.
result_id	FileId of the result file.
outer_fields.	Vector of FieldIds corresponding to the join fields in outer_rel
inner_fields.	Vector of FieldIds corresponding to the join fields in inner_rel

Member Function Documentation

runOperation()

void TupleNLJ::runOperation ( )

virtual

Runs the operation.

Precondition

Valid files and parameters have been passed to the contructor.

Postcondition

Result file has been populated with records that meet the criteria of the operation.

Implements Operation.

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

• tupleNLJ.h