iceberg::Or Class Reference

An Expression that represents a logical OR operation between two expressions. More...

#include <expression.h>

Inheritance diagram for iceberg::Or:

Public Member Functions
const std::shared_ptr< Expression > &	left () const
	Returns the left operand of the OR expression.
const std::shared_ptr< Expression > &	right () const
	Returns the right operand of the OR expression.
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 Result< std::unique_ptr< Or > >	Make (std::shared_ptr< Expression > left, std::shared_ptr< Expression > right)
	Creates an Or expression from two sub-expressions.
template<typename... Args> requires std::conjunction_v<std::is_same<Args, std::shared_ptr<Expression>>...>
static Result< std::shared_ptr< Expression > >	MakeFolded (std::shared_ptr< Expression > left, std::shared_ptr< Expression > right, Args &&... args)
	Creates a folded Or expression from two sub-expressions.

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 represents a logical OR operation between two expressions.

This expression evaluates to true if at least one of its child expressions evaluates to true.

Member Function Documentation

Equals()

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

overridevirtual

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.

left()

const std::shared_ptr< Expression > & iceberg::Or::left ( ) const

inline

Returns the left operand of the OR expression.

Returns

The left operand of the OR expression

Make()

Result< std::unique_ptr< Or > > iceberg::Or::Make ( std::shared_ptr< Expression >  left, std::shared_ptr< Expression >  right  )

static

Creates an Or expression from two sub-expressions.

Parameters

left	The left operand of the OR expression
right	The right operand of the OR expression

MakeFolded()

template<typename... Args>
requires std::conjunction_v<std::is_same<Args, std::shared_ptr<Expression>>...>

static Result< std::shared_ptr< Expression > > iceberg::Or::MakeFolded ( std::shared_ptr< Expression >  left, std::shared_ptr< Expression >  right, Args &&...  args  )

inlinestatic

Creates a folded Or expression from two sub-expressions.

Parameters

left	The left operand of the OR expression
right	The right operand of the OR expression
args	Additional operands of the OR expression

Returns

A Result containing a shared pointer to the folded Or expression, or an error if left or right is nullptr

Note

A folded Or expression is an expression that is equivalent to the original expression, but with the Or operation removed. For example, (false or x) = x.

Negate()

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

overridevirtual

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

Reimplemented from iceberg::Expression.

op()

Operation iceberg::Or::op ( ) const

inlineoverridevirtual

Returns the operation for an expression node.

Implements iceberg::Expression.

right()

const std::shared_ptr< Expression > & iceberg::Or::right ( ) const

inline

Returns the right operand of the OR expression.

Returns

The right operand of the OR expression

ToString()

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

overridevirtual

Get a user-readable string representation.

Reimplemented from iceberg::Expression.

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

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