disk_index.h

Go to the documentation of this file.

#ifndef META_DISK_INDEX_H_
#define META_DISK_INDEX_H_

#include <memory>
#include <vector>
#include "util/pimpl.h"
#include "meta.h"

namespace cpptoml
{
class table;
}

namespace meta
{

namespace index
{
class string_list;
class vocabulary_map;
}

namespace tokenizers
{
class tokenizer;
}

namespace util
{
template <class>
class disk_vector;
}
}

namespace meta
{
namespace index
{

class disk_index
{
  public:
    virtual ~disk_index() = default;

    std::string index_name() const;

    uint64_t num_docs() const;

    std::string doc_name(doc_id d_id) const;

    std::string doc_path(doc_id d_id) const;

    std::vector<doc_id> docs() const;

    uint64_t doc_size(doc_id d_id) const;

    class_label label(doc_id d_id) const;

    label_id lbl_id(doc_id d_id) const;

    label_id id(class_label label) const;

    class_label class_label_from_id(label_id l_id) const;

    uint64_t num_labels() const;

    std::vector<class_label> class_labels() const;

    virtual uint64_t unique_terms(doc_id d_id) const;

    virtual uint64_t unique_terms() const;

    term_id get_term_id(const std::string& term);

    std::string term_text(term_id t_id) const;

  protected:
    class disk_index_impl;
    util::pimpl<disk_index_impl> impl_;

    disk_index(const cpptoml::table& config, const std::string& name);

    disk_index(const disk_index&) = delete;

    disk_index& operator=(const disk_index&) = delete;

  public:
    disk_index(disk_index&&) = default;

    disk_index& operator=(disk_index&&) = default;
};
}
}

#endif