CoGaDB::SQL::ParseTree::AndCondition Struct Reference

#include <sql_parsetree.hpp>

Inheritance diagram for CoGaDB::SQL::ParseTree::AndCondition:

Collaboration diagram for CoGaDB::SQL::ParseTree::AndCondition:

List of all members.

Public Member Functions
	AndCondition (SearchConditionPtr _lvalue, SearchConditionPtr _rvalue)
KNF_Selection_Expression	getCNF (TypedNodePtr &io_node)
	Convert a parse tree AND condition into Conjunctive Normal Form.
Public Attributes
SearchConditionPtr	lvalue
SearchConditionPtr	rvalue

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Constructor & Destructor Documentation

CoGaDB::SQL::ParseTree::AndCondition::AndCondition	(	SearchConditionPtr	_lvalue,
		SearchConditionPtr	_rvalue
	)		[inline]

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Member Function Documentation

KNF_Selection_Expression CoGaDB::SQL::ParseTree::AndCondition::getCNF

(

TypedNodePtr &

io_node

)

[virtual]

Convert a parse tree AND condition into Conjunctive Normal Form.

To convert the AND condition of two search conditions, conjunctions of their CNF simply have to be concatenated.

Parameters:

io_node

Reference to node pointer that holds the current chain of algebraic logical operators that is updated during CNF construction.

Returns:

The CNF of the conjunction of the two search conditions

Implements CoGaDB::SQL::ParseTree::SearchCondition.

References CoGaDB::KNF_Selection_Expression::disjunctions.

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Member Data Documentation

SearchConditionPtr CoGaDB::SQL::ParseTree::AndCondition::lvalue

SearchConditionPtr CoGaDB::SQL::ParseTree::AndCondition::rvalue

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

• /home/sebastian/gpudbms/trunk/cogadb/include/sql/server/sql_parsetree.hpp
• /home/sebastian/gpudbms/trunk/cogadb/src/sql/server/sql_parsetree.cpp