lib/lemma.h


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#ifndef LEMMA_H_0A180D30
#define LEMMA_H_0A180D30

#include <stdexcept>
#include <vector>
#include <list>
#include <map>
#include "field.h"
#include "form.h"
#include "enums.h"
#include "filter.h"

struct sqlite3_stmt;

namespace verbly {

  class database;

  class lemma {
  public:

    // Default constructor

    lemma() = default;

    // Construct from database

    lemma(const database& db, sqlite3_stmt* row);

    // Accessors

    operator bool() const
    {
      return valid_;
    }

    int getId() const
    {
      if (!valid_)
      {
        throw std::domain_error("Bad access to uninitialized lemma");
      }

      return id_;
    }

    const form& getBaseForm() const;

    bool hasInflection(inflection category) const;

    const std::vector<form>& getInflections(inflection category) const;

    // Type info

    static const object objectType;

    static const std::list<std::string> select;

    // Query fields

    static const field id;

    operator filter() const
    {
      if (!valid_)
      {
        throw std::domain_error("Bad access to uninitialized lemma");
      }

      return (id == id_);
    }

    // Relationships to other objects

    static const field word;

    class inflection_field {
    public:

      inflection_field(inflection category) : category_(category)
      {
      }

      const inflection getCategory() const
      {
        return category_;
      }

      operator filter() const;

    private:

      const inflection category_;
    };

    static const inflection_field form(inflection category)
    {
      return inflection_field(category);
    }

    friend filter operator%=(lemma::inflection_field check, filter joinCondition);

  private:

    void initializeForm(inflection category) const;

    bool valid_ = false;

    int id_;

    mutable std::map<inflection, std::vector<class form>> forms_;

    const database* db_;

    static const field formJoin;
    static const field inflectionCategory;

  };

};

#endif /* end of include guard: LEMMA_H_0A180D30 */