AQP::Join_plan Class Reference

#include <abstract_query_plan.h>

Inheritance diagram for AQP::Join_plan:

List of all members.

Public Member Functions
	Join_plan (const JOIN *join)
const Table_access *	get_table_access (uint access_no) const
uint	get_access_count () const
Friends
class	Equal_set_iterator
class	Table_access

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Detailed Description

This class represents a query plan for an n-way join, in the form a sequence of n table access operations that will execute as a nested loop join.

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Constructor & Destructor Documentation

AQP::Join_plan::Join_plan

(

const JOIN *

join

)

[explicit]

Parameters:

join_tab	Array of access methods constituting the nested loop join.
access_count	Length of array.

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Member Function Documentation

uint AQP::Join_plan::get_access_count

(

)

const [inline]

Returns:

The number of table access operations in the nested loop join.

const Table_access * AQP::Join_plan::get_table_access

(

uint

access_no

)

const [inline]

Get the n'th table access operation.

Parameters:

access_no

The index of the table access operation to fetch.

Returns:

The access_no'th table access operation.

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

• abstract_query_plan.h
• abstract_query_plan.cc