fs_fulltextsearch.h

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#ifndef FS_FULLTEXTSEARCH_H_
#define FS_FULLTEXTSEARCH_H_

#include "common/fs_common.h"

namespace foxit {
namespace fts {
class SearchCallback {
 public:
  virtual void Release() = 0;
  virtual int RetrieveSearchResult(const wchar_t* file_path, int page_index, const WString& match_result,
                                   int match_start_text_index, int match_end_text_index, const WString& sentence,
                                   int match_sentence_start_text_index, int match_sentence_end_text_index) = 0;

 protected:
  ~SearchCallback() {}
};

class DocumentsSource FS_FINAL : public Base{
 public:
  explicit DocumentsSource(const char* directory);
  ~DocumentsSource();
  DocumentsSource(const DocumentsSource& other);
  DocumentsSource& operator = (const DocumentsSource& other);

  bool operator == (const DocumentsSource& other) const;
  bool operator != (const DocumentsSource& other) const;

  bool IsEmpty() const;

  // 强烈建议用户不要使用此方法；否则可能出现未知情况。
  explicit DocumentsSource(FS_HANDLE handle =  NULL);

};

class FullTextSearch FS_FINAL : public Base{
 public:
  typedef enum _RankMode {
    e_RankNone = 0,
    e_RankHitCountASC = 1,
    e_RankHitCountDESC = 2
  } RankMode;
  

  FullTextSearch();
  ~FullTextSearch();
  FullTextSearch(const FullTextSearch& other);
  FullTextSearch& operator = (const FullTextSearch& other);

  bool operator == (const FullTextSearch& other) const;
  bool operator != (const FullTextSearch& other) const;
  bool IsEmpty() const;

  void SetDataBasePath(const char* path_of_data_base);

  common::Progressive StartUpdateIndex(const DocumentsSource& source, common::PauseCallback* pause = NULL,
                                       bool reupdate = false);

  bool UpdateIndexWithFilePath(const char* file_path);

  bool SearchOf(const char* match_string, RankMode rank_mode, SearchCallback* callback);

  // 强烈建议用户不要使用此方法；否则可能出现未知情况。
  explicit FullTextSearch(FS_HANDLE handle);
};
}  // namespace fts
};  // namespace foxit

#endif  // FS_FULLTEXTSEARCH_H_