Interface BLOBStore

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      String createId​(PropertyId id, int index)
      Creates a unique identifier for the BLOB data associated with the given property id and value subscript.
      InputStream get​(String blobId)
      Retrieves the BLOB data with the specified id as a binary stream.
      void put​(String blobId, InputStream in, long size)
      Stores the BLOB data and returns a unique identifier.
      boolean remove​(String blobId)
      Removes the BLOB data with the specified id.
    • Method Detail

      • createId

        String createId​(PropertyId id,
                        int index)
        Creates a unique identifier for the BLOB data associated with the given property id and value subscript.
        Parameters:
        id - id of the property associated with the BLOB data
        index - subscript of the value holding the BLOB data
        Returns:
        a string identifying the BLOB data
      • put

        void put​(String blobId,
                 InputStream in,
                 long size)
          throws Exception
        Stores the BLOB data and returns a unique identifier.
        Parameters:
        blobId - identifier of the BLOB data as returned by createId(PropertyId, int)
        in - stream containing the BLOB data
        size - size of the BLOB data
        Throws:
        Exception - if an error occured
      • get

        InputStream get​(String blobId)
                 throws Exception
        Retrieves the BLOB data with the specified id as a binary stream.
        Parameters:
        blobId - identifier of the BLOB data as returned by createId(PropertyId, int)
        Returns:
        an input stream that delivers the BLOB data
        Throws:
        Exception - if an error occured
      • remove

        boolean remove​(String blobId)
                throws Exception
        Removes the BLOB data with the specified id.
        Parameters:
        blobId - identifier of the BLOB data as returned by createId(PropertyId, int)
        Returns:
        true if BLOB data with the given id exists and has been successfully removed, false if there's no BLOB data with the given id.
        Throws:
        Exception - if an error occured