package org.paneris.bibliomania.fti;
   
   import org.melati.poem.transaction.ToTidyList;
   
   import com.sleepycat.db.DatabaseException;
   import com.sleepycat.db.Cursor;
   import com.sleepycat.db.DatabaseEntry;
   import com.sleepycat.db.OperationStatus;
   import com.sleepycat.db.internal.DbConstants;
  
  public class IndexCursor implements ToTidyList.Closeable {
    private final Cursor texts;
    private final DatabaseEntry word_text;
    private final DatabaseEntry occurrencesData;
  
    //private int wordID = -1;
  
    IndexCursor(IndexOther index) throws DatabaseException {
      texts = index.occurrencesOfWordInText.openCursor(null, null);
      word_text = DbUtils.userMemDatabaseEntry(IndexOther.wtBytesLength);
      occurrencesData = DbUtils.userMemDatabaseEntry(500);
    }
  
    public boolean next() {
      return DbUtils.get(texts, word_text, occurrencesData, DbConstants.DB_NEXT, 500) == OperationStatus.SUCCESS;
    }
  
    public long textID() {
      return IndexOther.getWT_textID(word_text.getData());
    }
  
    public int wordID() {
      return IndexOther.getWT_wordID(word_text.getData());
    }
  
    public void close() {
      try {
        texts.close();
      }
      catch (Exception e) {}
    }
  }