ComparePredicate.h

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//
// Created by Nico Schäfer on 11/13/17.
//
 
#ifndef JODA_COMPAREPREDICATE_H
#define JODA_COMPAREPREDICATE_H
 
#include <joda/query/values/IValueProvider.h>
 
#include "Predicate.h"
 
namespace joda::query {
class NotComparableException : public std::exception {
  virtual const char *what() const throw() {
    return "The given values are not comparable by '<', '<=','>' or '>='";
  }
};
 
class ComparePredicate : public Predicate {
 public:
  ComparePredicate(std::unique_ptr<IValueProvider> &&lhs,
                   std::unique_ptr<IValueProvider> &&rhs, bool greater = true,
                   bool include = true);
  bool check(const RapidJsonDocument &val) override;
  bool isCompatible(Predicate *other) override;
  std::string getType() override;
  void accept(class PredicateVisitor &v) override;
 
  std::string toString();
  std::vector<std::string> getAttributes() const;
  std::unique_ptr<Predicate> duplicate() const;
  bool isGreater() const;
  bool isInclude() const;
  std::unique_ptr<IValueProvider> &getLhs();
  std::unique_ptr<IValueProvider> &getRhs();
 
 protected:
  std::unique_ptr<IValueProvider> lhs;
  std::unique_ptr<IValueProvider> rhs;
  bool greater = true;
  bool include = true;
};
}  // namespace joda::query
 
#endif  // JODA_COMPAREPREDICATE_H