Examples with MCRException org.mycore.common.MCRException used on opensource projects

Example 46 with MCRException

use of org.mycore.common.MCRException in project mycore by MyCoRe-Org.

the class MCRLayoutService method doLayout.

public void doLayout(HttpServletRequest req, HttpServletResponse res, MCRContent source) throws IOException, TransformerException, SAXException {
    if (res.isCommitted()) {
        LOGGER.warn("Response already committed: {}:{}", res.getStatus(), res.getContentType());
        return;
    }
    String docType = source.getDocType();
    try {
        MCRParameterCollector parameter = new MCRParameterCollector(req);
        MCRContentTransformer transformer = getContentTransformer(docType, parameter);
        String filename = getFileName(req, parameter);
        transform(res, transformer, source, parameter, filename);
    } catch (IOException | TransformerException | SAXException ex) {
        throw ex;
    } catch (MCRException ex) {
        // generating an error page when there is an error in the stylesheet
        if (!"mcr_error".equals(docType)) {
            throw ex;
        }
        String msg = "Error while generating error page!";
        LOGGER.warn(msg, ex);
        res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg);
    } catch (Exception e) {
        throw new MCRException(e);
    }
}

Example 47 with MCRException

use of org.mycore.common.MCRException in project mycore by MyCoRe-Org.

the class MCREventManager method handleEvent.

/**
 * This method is called by the component that created the event and acts as
 * a multiplexer that invokes all registered event handlers doHandleEvent
 * methods. If something goes wrong and an exception is caught, the
 * undoHandleEvent methods of all event handlers that are at a position
 * BEFORE the failed one, will be called in reversed order. The parameter
 * direction controls the order in which the event handlers are called.
 *
 * @see MCREventHandler#doHandleEvent
 * @see MCREventHandlerBase
 *
 * @param evt
 *            the event that happened
 * @param direction
 *            the order in which the event handlers are called
 */
public void handleEvent(MCREvent evt, boolean direction) {
    List<MCREventHandler> list = handlers.get(evt.getObjectType());
    if (list == null) {
        return;
    }
    int first = direction ? 0 : list.size() - 1;
    int last = direction ? list.size() - 1 : 0;
    int step = direction ? 1 : -1;
    int undoPos = first;
    Exception handleEventExceptionCaught = null;
    for (int i = first; i != last + step; i += step) {
        MCREventHandler eh = list.get(i);
        logger.debug("EventManager {} {} calling handler {}", evt.getObjectType(), evt.getEventType(), eh.getClass().getName());
        try {
            eh.doHandleEvent(evt);
        } catch (Exception ex) {
            handleEventExceptionCaught = ex;
            logger.error("Exception caught while calling event handler", ex);
            logger.error("Trying rollback by calling undo method of event handlers");
            undoPos = i;
            break;
        }
    }
    // Rollback by calling undo of successfull handlers
    for (int i = undoPos - step; i != first - step; i -= step) {
        MCREventHandler eh = list.get(i);
        logger.debug("EventManager {} {} calling undo of handler {}", evt.getObjectType(), evt.getEventType(), eh.getClass().getName());
        try {
            eh.undoHandleEvent(evt);
        } catch (Exception ex) {
            logger.error("Exception caught while calling undo of event handler", ex);
        }
    }
    if (handleEventExceptionCaught != null) {
        String msg = "Exception caught in EventHandler, rollback by calling undo of successfull handlers done.";
        throw new MCRException(msg, handleEventExceptionCaught);
    }
}

Example 48 with MCRException

use of org.mycore.common.MCRException in project mycore by MyCoRe-Org.

the class MCRCategoryDAOImpl method buildCategoryFromPrefetchedList.

private static MCRCategoryImpl buildCategoryFromPrefetchedList(List<MCRCategoryDTO> list, MCRCategoryID returnID) {
    LOGGER.debug(() -> "using prefetched list: " + list);
    MCRCategoryImpl predecessor = null;
    for (MCRCategoryDTO entry : list) {
        predecessor = entry.merge(predecessor);
    }
    return MCRStreamUtils.flatten(predecessor.getRoot(), MCRCategory::getChildren, Collection::parallelStream).filter(c -> c.getId().equals(returnID)).findFirst().map(MCRCategoryImpl.class::cast).orElseThrow(() -> new MCRException("Could not find " + returnID + " in database result."));
}

Example 49 with MCRException

use of org.mycore.common.MCRException in project mycore by MyCoRe-Org.

the class MCRShutdownHandler method addCloseable.

public void addCloseable(MCRShutdownHandler.Closeable c) {
    Objects.requireNonNull(c);
    init();
    boolean hasShutDownLock;
    try {
        hasShutDownLock = shutdownLock.readLock().tryLock(ADD_CLOSEABLE_TIMEOUT, TimeUnit.SECONDS);
    } catch (InterruptedException e) {
        throw new MCRException("Could not aquire shutdown lock in time", e);
    }
    try {
        if (hasShutDownLock && !shuttingDown) {
            requests.add(c);
        } else {
            throw new MCRException("Cannot register Closeable while shutting down application.");
        }
    } finally {
        if (hasShutDownLock) {
            shutdownLock.readLock().unlock();
        }
    }
}

Example 50 with MCRException

use of org.mycore.common.MCRException in project mycore by MyCoRe-Org.

the class MCRBibUtilsTransformer method export.

private MCRContent export(File modsFile) {
    String[] arguments = buildCommandArguments(modsFile);
    MCRExternalProcess ep = null;
    try {
        ep = new MCRExternalProcess(arguments);
        ep.run();
        String errors = ep.getErrors();
        if (!errors.isEmpty())
            LOGGER.warn(errors);
        return ep.getOutput();
    } catch (Exception ex) {
        String msg = "Exception invoking external command " + command;
        throw new MCRException(msg, ex);
    }
}