Module org.apache.jena.dboe.transaction
Package org.apache.jena.dboe.transaction.txn

Interface TransactionalSystem

All Superinterfaces:
Transactional, org.apache.jena.sparql.core.Transactional
All Known Implementing Classes:
TransactionalBase
public interface TransactionalSystem extends Transactional
Implementation side of a Transactional. Transactional presents the application facing view whereas this has all the possible steps of an implementation. Normally, the implementation of commit() is split up.

  • Nested Class Summary

    Nested classes/interfaces inherited from interface org.apache.jena.sparql.core.Transactional

    org.apache.jena.sparql.core.Transactional.Promote

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    attach(TransactionCoordinatorState coordinatorState)
    Attach a transaction to this thread.
    default void
    commit()
     
    void
    commitExec()
    Do the 2-phase "commit" step
    void
    commitPrepare()
    Do the 2-phase "prepare" step after which the transaction coordinator decides whether to commit or abort.
    TransactionCoordinatorState
    detach()
    Suspend this transaction, detaching from the current thread.
    Transaction
    getThreadTransaction()
    Return the transaction object for this thread.
    TransactionInfo
    getTransactionInfo()
    Return an information view of the transaction for this thread, if any.
    TransactionCoordinator
    getTxnMgr()
    Get the associated TransactionCoordinator

    Methods inherited from interface org.apache.jena.sparql.core.Transactional

    abort, begin, begin, begin, calc, calculate, calculateRead, calculateWrite, end, exec, execute, executeRead, executeWrite, isInTransaction, promote, promote, transactionMode, transactionType

  • Method Details

    • commit

      default void commit()
      Specified by:
      commit in interface org.apache.jena.sparql.core.Transactional

    • commitPrepare

      void commitPrepare()
      Do the 2-phase "prepare" step after which the transaction coordinator decides whether to commit or abort. A TransactionalSystem must be prepared for both possibilities.

    • commitExec

      void commitExec()
      Do the 2-phase "commit" step

    • detach

      TransactionCoordinatorState detach()
      Suspend this transaction, detaching from the current thread. A new transaction on this thread can performed but the detached transaction still exists and if it is a write transaction it can still block other write transactions.

    • attach

      void attach(TransactionCoordinatorState coordinatorState)
      Attach a transaction to this thread. A transaction system implementation usually imposes a rule that only one thread can have a transaction attached at a time.

    • getTxnMgr

      TransactionCoordinator getTxnMgr()
      Get the associated TransactionCoordinator

    • getTransactionInfo

      TransactionInfo getTransactionInfo()
      Return an information view of the transaction for this thread, if any. Returns null when there is no active transaction for this tread.

    • getThreadTransaction

      Transaction getThreadTransaction()
      Return the transaction object for this thread. Low-level use only. To get information about the current transaction, call getTransactionInfo().