Examples with StructrTransactionListener org.structr.core.StructrTransactionListener used on opensource projects

Example 1 with StructrTransactionListener

use of org.structr.core.StructrTransactionListener in project structr by structr.

the class TransactionCommand method commitTx.

public void commitTx(final boolean doValidation) throws FrameworkException {
    final TransactionReference tx = transactions.get();
    if (tx != null && tx.isToplevel()) {
        final ModificationQueue modificationQueue = queues.get();
        final ErrorBuffer errorBuffer = buffers.get();
        // 0.5: let transaction listeners examine (and prevent?) commit
        for (final StructrTransactionListener listener : listeners) {
            listener.beforeCommit(securityContext, modificationQueue.getModificationEvents(), tx.getSource());
        }
        // 1. do inner callbacks (may cause transaction to fail)
        if (!modificationQueue.doInnerCallbacks(securityContext, errorBuffer)) {
            tx.failure();
            throw new FrameworkException(422, "Unable to commit transaction, validation failed", errorBuffer);
        }
        // 2. fetch all types of entities modified in this tx
        Set<String> synchronizationKeys = modificationQueue.getSynchronizationKeys();
        // 3. acquire semaphores for each modified type
        try {
            semaphore.acquire(synchronizationKeys);
        } catch (InterruptedException iex) {
            return;
        }
        // do validation under the protection of the semaphores for each type
        if (doValidation && !modificationQueue.doValidation(securityContext, errorBuffer, doValidation)) {
            tx.failure();
            // create error
            throw new FrameworkException(422, "Unable to commit transaction, validation failed", errorBuffer);
        }
        // finally: execute validatable post-transaction action
        if (!modificationQueue.doPostProcessing(securityContext, errorBuffer)) {
            tx.failure();
            throw new FrameworkException(422, "Unable to commit transaction, transaction post processing failed", errorBuffer);
        }
        try {
            tx.success();
        } catch (Throwable t) {
            logger.error("Unable to commit transaction", t);
        }
    }
}

Example 2 with StructrTransactionListener

use of org.structr.core.StructrTransactionListener in project structr by structr.

the class Tx method close.

@Override
public void close() throws FrameworkException {
    final ModificationQueue modificationQueue = cmd.finishTx();
    if (success && guard.compareAndSet(false, true)) {
        boolean retry = true;
        while (retry) {
            retry = false;
            // experimental
            try (final Tx tx = begin()) {
                if (doCallbacks && modificationQueue != null) {
                    modificationQueue.doOuterCallbacks(securityContext);
                    // notify listeners if desired, and allow this setting to be overriden locally AND remotely
                    if ((securityContext == null) ? doNotifications : doNotifications && securityContext.doTransactionNotifications()) {
                        final Collection<ModificationEvent> modificationEvents = modificationQueue.getModificationEvents();
                        for (final StructrTransactionListener listener : TransactionCommand.getTransactionListeners()) {
                            listener.afterCommit(securityContext, modificationEvents, cmd.getSource());
                        }
                    }
                    modificationQueue.updateChangelog();
                    modificationQueue.clear();
                }
                tx.success();
            } catch (RetryException rex) {
                retry = true;
            }
        }
        guard.set(false);
    }
}