Interface IStorageBackend

  • All Known Implementing Classes:
    SimpleLocalStorageBackend

    public interface IStorageBackend
    An abstract storage backend that instantiates tables and coordinates transactions.

    EXPERIMENTAL. This class or interface has been added as part of a work in progress. There is no guarantee that this API will work or that it will remain the same.

    Since:
    2.1
    • Method Detail

      • startTransaction

        void startTransaction()
        Marks the beginning of a transaction. In transaction mode, table updates may be temporarily delayed (IIndexTable methods may return stale answers) for better performance.
      • finishTransaction

        void finishTransaction()
        Marks the end of a transaction. Any updates delayed during the transaction must now be flushed.
      • createUnaryTable

        ITableWriterUnary.Table<java.lang.Object> createUnaryTable​(IInputKey key,
                                                                   ITableContext tableContext,
                                                                   boolean unique)
        Creates an index table for a simple value set.
        Parameters:
        unique - client promises to only insert a given tuple with multiplicity one
      • createBinaryTable

        ITableWriterBinary.Table<java.lang.Object,​java.lang.Object> createBinaryTable​(IInputKey key,
                                                                                            ITableContext tableContext,
                                                                                            boolean unique)
        Creates an index table for a simple source-target bidirectional mapping.
        Parameters:
        unique - client promises to only insert a given tuple with multiplicity one