iceberg::True Class Reference

An Expression that is always true. More...

#include <expression.h>

Inheritance diagram for iceberg::True:

Public Member Functions
Operation	op () const override
	Returns the operation for an expression node.
std::string	ToString () const override
	Get a user-readable string representation.
Result< std::shared_ptr< Expression > >	Negate () const override
	Returns the negation of this expression, equivalent to not(this).
bool	Equals (const Expression &other) const override
	Returns whether this expression will accept the same values as another.
Public Member Functions inherited from iceberg::Expression
virtual bool	is_unbound_predicate () const
virtual bool	is_bound_predicate () const
virtual bool	is_unbound_aggregate () const
virtual bool	is_bound_aggregate () const

Static Public Member Functions
static const std::shared_ptr< True > &	Instance ()
	Returns the singleton instance.

Additional Inherited Members
Public Types inherited from iceberg::Expression
enum class	Operation {   kTrue , kFalse , kIsNull , kNotNull ,   kIsNan , kNotNan , kLt , kLtEq ,   kGt , kGtEq , kEq , kNotEq ,   kIn , kNotIn , kNot , kAnd ,   kOr , kStartsWith , kNotStartsWith , kCount ,   kCountNull , kCountStar , kMax , kMin }
	Operation types for expressions.

Detailed Description

An Expression that is always true.

Represents a boolean predicate that always evaluates to true.

Member Function Documentation

Equals()

bool iceberg::True::Equals ( const Expression &  other ) const

inlineoverridevirtual

Returns whether this expression will accept the same values as another.

Parameters

other

another expression

Returns

true if the expressions are equivalent

Reimplemented from iceberg::Expression.

Negate()

Result< std::shared_ptr< Expression > > iceberg::True::Negate ( ) const

overridevirtual

Returns the negation of this expression, equivalent to not(this).

Reimplemented from iceberg::Expression.

op()

Operation iceberg::True::op ( ) const

inlineoverridevirtual

Returns the operation for an expression node.

Implements iceberg::Expression.

ToString()

std::string iceberg::True::ToString ( ) const

inlineoverridevirtual

Get a user-readable string representation.

Reimplemented from iceberg::Expression.

---

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

• iceberg/expression/expression.h
• iceberg/expression/expression.cc