#include <indexNLJ.h>

Inheritance diagram for IndexNLJ:

[legend]

Collaboration diagram for IndexNLJ:

[legend]

Public Member Functions
	IndexNLJ (FileId outer_id, FileId inner_id, FileId inner_index_id, FileId result_id, std::vector< FieldId > outer_fields, std::vector< FieldId > inner_fields, Catalog *catalog)
	Constructor for Index Nested Loop Join operation.

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.

Protected Attributes
HashIndexFile *	index_file

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

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.

Detailed Description

IndexNLJ: index nested loop join class derived from Join

Constructor & Destructor Documentation

Constructor for Index Nested Loop Join operation.

Parameters

outer_id.	FileId of the outer relation file.
inner_id.	FileId of the inner relation file.
inner_index_id.	FileId of the index for 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

void IndexNLJ::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.

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