org.apache.jena.dboe.transaction.txn

Interface TransactionalSystem

All Superinterfaces:

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

Transactional.Promote

Method Summary

Modifier and Type	Method and 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, end, isInTransaction, promote, promote, transactionMode, transactionType

Method Detail

commit

default void commit()

Specified by:

commit in interface 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().