Examples with StateManager com.arjuna.ats.arjuna.StateManager used on opensource projects

Example 1 with StateManager

use of com.arjuna.ats.arjuna.StateManager in project narayana by jbosstm.

the class TxLogWritePersistenceRecord method topLevelPrepare.

/**
 * topLevelPrepare attempts to save the object.
 * It will either do this in the action intention list or directly
 * in the object store by using the 'deactivate' function of the object
 * depending upon the size of the state.
 * To ensure that objects are correctly hidden while they are in an
 * uncommitted state if we use the abbreviated protocol then we write an
 * EMPTY object state as the shadow state - THIS MUST NOT BE COMMITTED.
 * Instead we write_committed the one saved in the intention list.
 * If the store cannot cope with being given an empty state we revert to
 * the old protocol.
 */
public int topLevelPrepare() {
    int result = TwoPhaseOutcome.PREPARE_NOTOK;
    StateManager sm = super.objectAddr;
    LogWriteStateManager lwsm = null;
    boolean writeToLog = true;
    try {
        lwsm = (LogWriteStateManager) sm;
        writeToLog = lwsm.writeOptimisation();
    } catch (ClassCastException ex) {
        writeToLog = false;
    }
    if ((sm != null) && (targetParticipantStore != null)) {
        topLevelState = new OutputObjectState(sm.get_uid(), sm.type());
        if (writeToLog || (!targetParticipantStore.fullCommitNeeded() && (sm.save_state(topLevelState, ObjectType.ANDPERSISTENT)) && (topLevelState.size() <= PersistenceRecord.MAX_OBJECT_SIZE))) {
            if (PersistenceRecord.classicPrepare) {
                OutputObjectState dummy = new OutputObjectState(Uid.nullUid(), null);
                try {
                    targetParticipantStore.write_uncommitted(sm.get_uid(), sm.type(), dummy);
                    result = TwoPhaseOutcome.PREPARE_OK;
                } catch (ObjectStoreException e) {
                    tsLogger.i18NLogger.warn_PersistenceRecord_21(e);
                }
                dummy = null;
            } else {
                result = TwoPhaseOutcome.PREPARE_OK;
            }
        } else {
            if (sm.deactivate(targetParticipantStore.getStoreName(), false)) {
                shadowMade = true;
                result = TwoPhaseOutcome.PREPARE_OK;
            } else {
                tsLogger.i18NLogger.warn_PersistenceRecord_7();
            }
        }
    } else {
        tsLogger.i18NLogger.warn_PersistenceRecord_8();
    }
    return result;
}

Example 2 with StateManager

use of com.arjuna.ats.arjuna.StateManager in project narayana by jbosstm.

the class PersistenceRecord method topLevelPrepare.

/**
 * topLevelPrepare attempts to save the object. It will either do this in
 * the action intention list or directly in the object store by using the
 * 'deactivate' function of the object depending upon the size of the state.
 * To ensure that objects are correctly hidden while they are in an
 * uncommitted state if we use the abbreviated protocol then we write an
 * EMPTY object state as the shadow state - THIS MUST NOT BE COMMITTED.
 * Instead we write_committed the one saved in the intention list. If the
 * store cannot cope with being given an empty state we revert to the old
 * protocol.
 */
public int topLevelPrepare() {
    if (tsLogger.logger.isTraceEnabled()) {
        tsLogger.logger.trace("PersistenceRecord::topLevelPrepare() for " + order());
    }
    int result = TwoPhaseOutcome.PREPARE_NOTOK;
    StateManager sm = super.objectAddr;
    if ((sm != null) && (targetParticipantStore != null)) {
        /*
		     * Get ready to create our state to be saved. At this stage we're not
		     * sure if the state will go into its own log or be written into the
		     * transaction log for improved performance.
		     */
        topLevelState = new OutputObjectState(sm.get_uid(), sm.type());
        if (writeOptimisation && (!targetParticipantStore.fullCommitNeeded() && (sm.save_state(topLevelState, ObjectType.ANDPERSISTENT)) && (topLevelState.size() <= PersistenceRecord.MAX_OBJECT_SIZE))) {
            if (PersistenceRecord.classicPrepare) {
                OutputObjectState dummy = new OutputObjectState(Uid.nullUid(), null);
                try {
                    if (targetParticipantStore.write_uncommitted(sm.get_uid(), sm.type(), dummy))
                        result = TwoPhaseOutcome.PREPARE_OK;
                    else {
                        result = TwoPhaseOutcome.PREPARE_NOTOK;
                    }
                } catch (ObjectStoreException e) {
                    tsLogger.i18NLogger.warn_PersistenceRecord_21(e);
                }
                dummy = null;
            } else {
                /*
				     * Don't write anything as our state will go into the log.
				     */
                result = TwoPhaseOutcome.PREPARE_OK;
            }
        } else {
            if (sm.deactivate(targetParticipantStore.getStoreName(), false)) {
                shadowMade = true;
                result = TwoPhaseOutcome.PREPARE_OK;
            } else {
                topLevelState = null;
                tsLogger.i18NLogger.warn_PersistenceRecord_7();
            }
        }
    } else {
        tsLogger.i18NLogger.warn_PersistenceRecord_8();
    }
    return result;
}

Example 3 with StateManager

use of com.arjuna.ats.arjuna.StateManager in project narayana by jbosstm.

the class ObjStoreBrowser method setType.

/**
 * Tell the browser which beans to use for particular Object Store Action type
 * @param osTypeClassName
 * @param beanTypeClassName
 * @return whether the type was set OK
 */
public boolean setType(String osTypeClassName, String beanTypeClassName) {
    try {
        Class cls = Class.forName(osTypeClassName);
        StateManager sm = (StateManager) cls.getConstructor().newInstance();
        String typeName = canonicalType(sm.type());
        if (typeName == null || typeName.length() == 0)
            return false;
        osbTypeMap.put(typeName, new OSBTypeHandler(true, osTypeClassName, beanTypeClassName, typeName, null));
        typeName = typeName.replaceAll("/", File.separator);
        osbTypeMap.put(typeName, new OSBTypeHandler(true, osTypeClassName, beanTypeClassName, typeName, null));
        return true;
    } catch (Exception e) {
        if (tsLogger.logger.isDebugEnabled())
            tsLogger.logger.debug("Invalid class type in system property ObjStoreBrowserHandlers: " + osTypeClassName);
        return false;
    }
}