Dv::Sql::true_boolexp Class Reference

A class representing the constant 'true'. More...

#include <select_exp.h>

Inheritance diagram for Dv::Sql::true_boolexp:

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Collaboration diagram for Dv::Sql::true_boolexp:

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List of all members.

Public Member Functions
	true_boolexp ()
std::ostream &	print (std::ostream &os, const Dv::Sql::Db &db) const
	Print this expression on a stream, using escapes for column values.

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Detailed Description

A class representing the constant 'true'.

This class is useful as a starting point for more complex expressions.

Example

 SelectExp exp(new true_boolexp);
 for (size_t i=0; (i<size()); ++i) 
   exp = exp && ( from_table->column(from(i)) == to_table->column(to(i)) );

See also:

Dv::Sql::SelectExp::true_exp

Definition at line 527 of file select_exp.h.

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Constructor & Destructor Documentation

Dv::Sql::true_boolexp::true_boolexp

(

)

[inline]

Definition at line 529 of file select_exp.h.

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Member Function Documentation

std::ostream& Dv::Sql::true_boolexp::print	(	std::ostream &	os,
		const Dv::Sql::Db &	db
	)			const [inline, virtual]

Print this expression on a stream, using escapes for column values.

Parameters:

	os	stream to print to
	db	whose associated escape function will be used

Returns:

os

See also:

Dv::Sql::boolexp::print

Implements Dv::Sql::boolexp.

Definition at line 537 of file select_exp.h.

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

• select_exp.h