joda::query::Predicate Class Reference

#include <Predicate.h>

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Public Member Functions
virtual	~Predicate ()=default
virtual bool	check (const RapidJsonDocument &val)=0
virtual bool	isCompatible (Predicate *other)
virtual std::string	getType ()
virtual void	accept (class PredicateVisitor &v)=0

Static Public Attributes
static const std::string	type = "Predicate"

Detailed Description

Predicates represent the filtering CHOOSE predicate. They are used to decide if a given document is in the result set or not.

Constructor & Destructor Documentation

~Predicate()

virtual joda::query::Predicate::~Predicate ( )

virtualdefault

Member Function Documentation

accept()

virtual void joda::query::Predicate::accept ( class PredicateVisitor &  v )

pure virtual

Uses the given PredicateVisitor to traverse the predicate tree with the visitor pattern.

Parameters

v	the visitor to use.

Implemented in joda::query::AndPredicate, joda::query::ValToPredicate, joda::query::OrPredicate, joda::query::NegatePredicate, joda::query::EqualizePredicate, and joda::query::ComparePredicate.

check()

virtual bool joda::query::Predicate::check ( const RapidJsonDocument &  val )

pure virtual

Checks if a given document fulfills the given predicate

Parameters

val	the document to check

Returns

true if the document fulfills the predicate, else false.

Implemented in joda::query::ValToPredicate, joda::query::OrPredicate, joda::query::NegatePredicate, joda::query::EqualizePredicate, joda::query::ComparePredicate, and joda::query::AndPredicate.

getType()

std::string joda::query::Predicate::getType ( )

virtual

Returns the classname of the predicate.

Returns

Reimplemented in joda::query::ValToPredicate, joda::query::OrPredicate, joda::query::NegatePredicate, joda::query::EqualizePredicate, joda::query::ComparePredicate, and joda::query::AndPredicate.

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isCompatible()

bool joda::query::Predicate::isCompatible ( Predicate *  other )

virtual

Checks if two predicates are semantically equivalent

Returns

true if they are equivalent, false if not

Reimplemented in joda::query::ValToPredicate, joda::query::OrPredicate, joda::query::NegatePredicate, joda::query::EqualizePredicate, joda::query::ComparePredicate, and joda::query::AndPredicate.

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Field Documentation

type

const std::string joda::query::Predicate::type = "Predicate"

static

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

• /home/nico/joda_tmp/tmp-joda-dirs/JODA-gh/libs/joda/core/modules/query/predicate/include/joda/query/predicate/Predicate.h
• /home/nico/joda_tmp/tmp-joda-dirs/JODA-gh/libs/joda/core/modules/query/predicate/src/Predicate.cpp