Package rs.ac.bg.etf.sab.operations

Interface GenresOperations

  • public interface GenresOperations

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.lang.Integer addGenre​(java.lang.String name)
      Adds a new genre with the given name.
      boolean doesGenreExist​(java.lang.String name)
      Checks whether a genre with the given name exists.
      java.util.List<java.lang.Integer> getAllGenreIds()
      Returns IDs of all genres.
      java.lang.Integer getGenreId​(java.lang.String name)
      Retrieves the ID of a genre by its name.
      java.lang.Integer removeGenre​(java.lang.Integer id)
      Removes a genre by its ID.
      java.lang.Integer updateGenre​(java.lang.Integer id, java.lang.String newName)
      Updates the name of an existing genre.

    • Method Detail

      • addGenre

        java.lang.Integer addGenre​(java.lang.String name)
        Adds a new genre with the given name.
        Parameters:
        name - the name of the genre to add
        Returns:
        the auto-generated ID of the new genre, or null if the genre already exists

      • updateGenre

        java.lang.Integer updateGenre​(java.lang.Integer id,
                              java.lang.String newName)
        Updates the name of an existing genre.
        Parameters:
        id - the ID of the genre to update
        newName - the new name to set
        Returns:
        the ID of the updated genre, or null if no genre with the given ID exists

      • removeGenre

        java.lang.Integer removeGenre​(java.lang.Integer id)
        Removes a genre by its ID.
        Parameters:
        id - the ID of the genre to remove
        Returns:
        the ID of the removed genre, or null if no genre with the given ID exists

      • doesGenreExist

        boolean doesGenreExist​(java.lang.String name)
        Checks whether a genre with the given name exists.
        Parameters:
        name - the genre name to check
        Returns:
        true if a genre with the given name exists; false otherwise

      • getGenreId

        java.lang.Integer getGenreId​(java.lang.String name)
        Retrieves the ID of a genre by its name.
        Parameters:
        name - the name of the genre
        Returns:
        the ID of the genre, or null if not found

      • getAllGenreIds

        java.util.List<java.lang.Integer> getAllGenreIds()
        Returns IDs of all genres.
        Returns:
        a list of genre IDs (empty if none)