Interface TransactionManager

    • Field Detail

      • MODE_NONE

        static final int MODE_NONE
        Constant used for the lock_level argument to openConglomerate() and openScan() calls. Pass in MODE_NONE if you want no table or row locks. This is currently only supported from within access.
        See Also:
        Constant Field Values
      • LOCK_INSTANT_DURATION

        static final int LOCK_INSTANT_DURATION
        release lock immediately after getting lock.
        See Also:
        Constant Field Values
      • LOCK_COMMIT_DURATION

        static final int LOCK_COMMIT_DURATION
        hold lock until end of transaction.
        See Also:
        Constant Field Values
      • LOCK_MANUAL_DURATION

        static final int LOCK_MANUAL_DURATION
        Allow lock to be released manually prior to end transaction.
        See Also:
        Constant Field Values
    • Method Detail

      • addPostCommitWork

        void addPostCommitWork​(Serviceable work)
        Add to the list of post commit work.

        Add to the list of post commit work that may be processed after this transaction commits. If this transaction aborts, then the post commit work list will be thrown away. No post commit work will be taken out on a rollback to save point.

        This routine simply delegates the work to the Rawstore transaction.

        Parameters:
        work - The post commit work to do.
      • checkVersion

        boolean checkVersion​(int requiredMajorVersion,
                             int requiredMinorVersion,
                             java.lang.String feature)
                      throws StandardException
        Check to see if a database has been upgraded to the required level in order to use a store feature.
        Parameters:
        requiredMajorVersion - required database Engine major version
        requiredMinorVersion - required database Engine minor version
        feature - Non-null to throw an exception, null to return the state of the version match.
        Returns:
        true if the database has been upgraded to the required level, false otherwise.
        Throws:
        StandardException - if the database is not at the require version when feature feature is not null .
      • closeMe

        void closeMe​(ScanManager scan)
        The ScanManager.close() method has been called on "scan".

        Take whatever cleanup action is appropriate to a closed scan. It is likely this routine will remove references to the scan object that it was maintaining for cleanup purposes.

      • closeMe

        void closeMe​(ConglomerateController conglom_control)
        The ConglomerateController.close() method has been called on "conglom_control".

        Take whatever cleanup action is appropriate to a closed conglomerateController. It is likely this routine will remove references to the ConglomerateController object that it was maintaining for cleanup purposes.

      • closeMe

        void closeMe​(SortController sort_control)
        The SortController.close() method has been called on "sort_control".

        Take whatever cleanup action is appropriate to a closed sortController. It is likely this routine will remove references to the SortController object that it was maintaining for cleanup purposes.

      • getInternalTransaction

        TransactionManager getInternalTransaction()
                                           throws StandardException
        Get an Internal transaction.

        Start an internal transaction. An internal transaction is a completely separate transaction from the current user transaction. All work done in the internal transaction must be physical (ie. it can be undone physically by the rawstore at the page level, rather than logically undone like btree insert/delete operations). The rawstore guarantee's that in the case of a system failure all open Internal transactions are first undone in reverse order, and then other transactions are undone in reverse order.

        Internal transactions are meant to implement operations which, if interupted before completion will cause logical operations like tree searches to fail. This special undo order insures that the state of the tree is restored to a consistent state before any logical undo operation which may need to search the tree is performed.

        Returns:
        The new internal transaction.
        Throws:
        StandardException - Standard exception policy.
      • getRawStoreXact

        Transaction getRawStoreXact()
                             throws StandardException
        Get the Transaction from the Transaction manager.

        Access methods often need direct access to the "Transaction" - ie. the raw store transaction, so give access to it.

        Returns:
        The raw store transaction.
        Throws:
        StandardException - Standard exception policy.
      • findExistingConglomerateFromKey

        Conglomerate findExistingConglomerateFromKey​(ContainerKey container_key)
                                              throws StandardException
        Return existing Conglomerate after doing lookup by ContainerKey

        Throws exception if it can't find a matching conglomerate for the ContainerKey.

        Parameters:
        container_key - container key of target conglomerate.
        Returns:
        If successful returns
        Throws:
        StandardException - Standard exception policy.