Examples with XAResourceManager org.apache.derby.iapi.store.access.xa.XAResourceManager used on opensource projects

Example 1 with XAResourceManager

use of org.apache.derby.iapi.store.access.xa.XAResourceManager in project derby by apache.

the class EmbedXAResource method forget.

/**
 * Tell the resource manager to forget about a heuristically completed
 * transaction branch.
 *
 * @param xid A global transaction identifier
 * @exception XAException An error has occurred. Possible exception values
 * are XAER_RMERR, XAER_RMFAIL, XAER_NOTA, XAER_INVAL, or XAER_PROTO.
 */
public final synchronized void forget(Xid xid) throws XAException {
    checkXAActive();
    // ensure immtable and correct equals method.
    XAXactId xid_im = new XAXactId(xid);
    XATransactionState tranState = getTransactionState(xid_im);
    if (tranState == null) {
        XAResourceManager rm = ra.getXAResourceManager();
        ContextManager inDoubtCM = rm.find(xid);
        // RM also does not know about this xid.
        if (inDoubtCM == null)
            throw new XAException(XAException.XAER_NOTA);
        ContextService csf = getContextService();
        csf.setCurrentContextManager(inDoubtCM);
        try {
            rm.forget(inDoubtCM, xid_im);
            // close the connection/transaction since it can never be used again.
            inDoubtCM.cleanupOnError(StandardException.closeException(), false);
            return;
        } catch (StandardException se) {
            // The rm threw an exception, clean it up in the approprate
            // context.  There is no transactionResource to handle the
            // exception for us.
            inDoubtCM.cleanupOnError(se, con.isActive());
            throw wrapInXAException(se);
        } finally {
            csf.resetCurrentContextManager(inDoubtCM);
        }
    }
    // DERBY-1016; if the transaction exists throw XAER_PROTO on forget
    throw new XAException(XAException.XAER_PROTO);
}

Example 2 with XAResourceManager

use of org.apache.derby.iapi.store.access.xa.XAResourceManager in project derby by apache.

the class EmbedXAResource method rollback.

/**
 * Inform the resource manager to roll back work done on behalf of a
 * transaction branch
 *
 * @param xid A global transaction identifier
 * @exception XAException - An error has occurred
 */
public final synchronized void rollback(Xid xid) throws XAException {
    checkXAActive();
    // ensure immtable and correct equals method.
    XAXactId xid_im = new XAXactId(xid);
    XATransactionState tranState = getTransactionState(xid_im);
    if (tranState == null) {
        XAResourceManager rm = ra.getXAResourceManager();
        ContextManager inDoubtCM = rm.find(xid);
        // RM also does not know about this xid.
        if (inDoubtCM == null)
            throw new XAException(XAException.XAER_NOTA);
        ContextService csf = getContextService();
        csf.setCurrentContextManager(inDoubtCM);
        try {
            rm.rollback(inDoubtCM, xid_im);
            // close the connection/transaction since it can never be used again.
            inDoubtCM.cleanupOnError(StandardException.closeException(), false);
            return;
        } catch (StandardException se) {
            // The rm threw an exception, clean it up in the approprate
            // context.  There is no transactionResource to handle the
            // exception for us.
            inDoubtCM.cleanupOnError(se, con.isActive());
            throw wrapInXAException(se);
        } finally {
            csf.resetCurrentContextManager(inDoubtCM);
        }
    }
    synchronized (tranState) {
        // any XAResource.
        switch(tranState.associationState) {
            case XATransactionState.T0_NOT_ASSOCIATED:
            case XATransactionState.TRO_FAIL:
                break;
            default:
                throw new XAException(XAException.XAER_PROTO);
        }
        if (tranState.suspendedList != null && tranState.suspendedList.size() != 0)
            throw new XAException(XAException.XAER_PROTO);
        checkUserCredentials(tranState.creatingResource);
        try {
            tranState.xa_rollback();
        } catch (SQLException sqle) {
            throw wrapInXAException(sqle);
        } finally {
            returnConnectionToResource(tranState, xid_im);
        }
    }
}

Example 3 with XAResourceManager

use of org.apache.derby.iapi.store.access.xa.XAResourceManager in project derby by apache.

the class EmbedXAResource method prepare.

/**
 * Ask the resource manager to prepare for a transaction commit of the
 * transaction specified in xid.
 *
 * @param xid A global transaction identifier
 *
 * @return A value indicating the resource manager's vote on the outcome
 * of the transaction. The possible values are: XA_RDONLY or XA_OK. If the
 * resource manager wants to roll back the transaction, it should do so by
 * raising an appropriate XAException in the prepare method.
 *
 * @exception XAException An error has occurred. Possible exception values
 * are: XA_RB*, XAER_RMERR, XAER_RMFAIL, XAER_NOTA, XAER_INVAL, or
 * XAER_PROTO.
 */
public final synchronized int prepare(Xid xid) throws XAException {
    checkXAActive();
    // ensure immtable and correct equals method.
    XAXactId xid_im = new XAXactId(xid);
    XATransactionState tranState = getTransactionState(xid_im);
    if (tranState == null) {
        XAResourceManager rm = ra.getXAResourceManager();
        ContextManager inDoubtCM = rm.find(xid);
        // RM also does not know about this xid.
        if (inDoubtCM == null)
            throw new XAException(XAException.XAER_NOTA);
        // cannot prepare in doubt transactions
        throw new XAException(XAException.XAER_PROTO);
    }
    synchronized (tranState) {
        checkUserCredentials(tranState.creatingResource);
        // any XAResource.
        switch(tranState.associationState) {
            case XATransactionState.T0_NOT_ASSOCIATED:
                break;
            case XATransactionState.TRO_FAIL:
                throw new XAException(tranState.rollbackOnlyCode);
            default:
                throw new XAException(XAException.XAER_PROTO);
        }
        if (tranState.suspendedList != null && tranState.suspendedList.size() != 0)
            throw new XAException(XAException.XAER_PROTO);
        if (tranState.isPrepared)
            throw new XAException(XAException.XAER_PROTO);
        try {
            int ret = tranState.xa_prepare();
            if (ret == XATransactionController.XA_OK) {
                tranState.isPrepared = true;
                return XAResource.XA_OK;
            } else {
                returnConnectionToResource(tranState, xid_im);
                if (SanityManager.DEBUG) {
                    if (con.realConnection != null) {
                        SanityManager.ASSERT(con.realConnection.transactionIsIdle(), "real connection should have been idle." + "tranState = " + tranState + "ret = " + ret + "con.realConnection = " + con.realConnection);
                    }
                }
                return XAResource.XA_RDONLY;
            }
        } catch (SQLException sqle) {
            XAException xe = wrapInXAException(sqle);
            if (ExceptionUtil.isDeferredConstraintViolation(sqle.getSQLState())) {
                // We are rolling back
                returnConnectionToResource(tranState, xid_im);
            }
            throw xe;
        }
    }
}

Example 4 with XAResourceManager

use of org.apache.derby.iapi.store.access.xa.XAResourceManager in project derby by apache.

the class EmbedXAResource method commit.

/**
 * Commit the global transaction specified by xid.
 * @param xid A global transaction identifier
 * @param onePhase If true, the resource manager should use a one-phase
 * commit protocol to commit the work done on behalf of xid.
 *
 * @exception XAException An error has occurred. Possible XAExceptions are
 * XA_HEURHAZ, XA_HEURCOM, XA_HEURRB, XA_HEURMIX, XAER_RMERR,
 * XAER_RMFAIL, XAER_NOTA, XAER_INVAL, or XAER_PROTO.
 * <P>If the resource manager did not commit the transaction and
 * the paramether onePhase is set to true, the resource manager
 * may throw one of the XA_RB* exceptions. Upon return, the
 * resource manager has rolled back the branch's work and has
 * released all held resources.
 */
public final synchronized void commit(Xid xid, boolean onePhase) throws XAException {
    checkXAActive();
    // ensure immtable and correct equals method.
    XAXactId xid_im = new XAXactId(xid);
    XATransactionState tranState = getTransactionState(xid_im);
    if (tranState == null) {
        XAResourceManager rm = ra.getXAResourceManager();
        ContextManager inDoubtCM = rm.find(xid);
        // RM also does not know about this xid.
        if (inDoubtCM == null)
            throw new XAException(XAException.XAER_NOTA);
        ContextService csf = getContextService();
        csf.setCurrentContextManager(inDoubtCM);
        try {
            rm.commit(inDoubtCM, xid_im, onePhase);
            // close the connection/transaction since it can never
            // be used again. DERBY-4856 No extended diagnostic information needed.
            inDoubtCM.cleanupOnError(StandardException.closeException(), false);
            return;
        } catch (StandardException se) {
            // The rm threw an exception, clean it up in the approprate
            // context.  There is no transactionResource to handle the
            // exception for us.
            inDoubtCM.cleanupOnError(se, con.isActive());
            throw wrapInXAException(se);
        } finally {
            csf.resetCurrentContextManager(inDoubtCM);
        }
    }
    synchronized (tranState) {
        checkUserCredentials(tranState.creatingResource);
        // any XAResource.
        switch(tranState.associationState) {
            case XATransactionState.T0_NOT_ASSOCIATED:
                break;
            case XATransactionState.TRO_FAIL:
                throw new XAException(tranState.rollbackOnlyCode);
            default:
                throw new XAException(XAException.XAER_PROTO);
        }
        if (tranState.suspendedList != null && tranState.suspendedList.size() != 0)
            throw new XAException(XAException.XAER_PROTO);
        if (tranState.isPrepared == onePhase)
            throw new XAException(XAException.XAER_PROTO);
        try {
            tranState.xa_commit(onePhase);
        } catch (SQLException sqle) {
            throw wrapInXAException(sqle);
        } finally {
            returnConnectionToResource(tranState, xid_im);
        }
    }
}