Example usage for org.springframework.transaction TransactionDefinition withDefaults

Introduction

In this page you can find the example usage for org.springframework.transaction TransactionDefinition withDefaults.

Prototype

static TransactionDefinition withDefaults() 

Source Link

Document

Return an unmodifiable TransactionDefinition with defaults.

Usage

From source file:org.springframework.transaction.reactive.AbstractReactiveTransactionManager.java

/**
 * This implementation handles propagation behavior. Delegates to
 * {@code doGetTransaction}, {@code isExistingTransaction}
 * and {@code doBegin}.//from  ww  w. ja v a2 s  .  com
 * @see #doGetTransaction
 * @see #isExistingTransaction
 * @see #doBegin
 */
@Override
public final Mono<ReactiveTransaction> getReactiveTransaction(@Nullable TransactionDefinition definition)
        throws TransactionException {

    // Use defaults if no transaction definition given.
    TransactionDefinition def = (definition != null ? definition : TransactionDefinition.withDefaults());

    return TransactionSynchronizationManager.currentTransaction().flatMap(synchronizationManager -> {

        Object transaction = doGetTransaction(synchronizationManager);

        // Cache debug flag to avoid repeated checks.
        boolean debugEnabled = logger.isDebugEnabled();

        if (isExistingTransaction(transaction)) {
            // Existing transaction found -> check propagation behavior to find out how to behave.
            return handleExistingTransaction(synchronizationManager, def, transaction, debugEnabled);
        }

        // Check definition settings for new transaction.
        if (def.getTimeout() < TransactionDefinition.TIMEOUT_DEFAULT) {
            return Mono.error(new InvalidTimeoutException("Invalid transaction timeout", def.getTimeout()));
        }

        // No existing transaction found -> check propagation behavior to find out how to proceed.
        if (def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_MANDATORY) {
            return Mono.error(new IllegalTransactionStateException(
                    "No existing transaction found for transaction marked with propagation 'mandatory'"));
        } else if (def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_REQUIRED
                || def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_REQUIRES_NEW
                || def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_NESTED) {

            return TransactionContextManager.currentContext().map(TransactionSynchronizationManager::new)
                    .flatMap(nestedSynchronizationManager -> suspend(nestedSynchronizationManager, null)
                            .map(Optional::of).defaultIfEmpty(Optional.empty()).flatMap(suspendedResources -> {
                                if (debugEnabled) {
                                    logger.debug("Creating new transaction with name [" + def.getName() + "]: "
                                            + def);
                                }
                                return Mono.defer(() -> {
                                    GenericReactiveTransaction status = newReactiveTransaction(
                                            nestedSynchronizationManager, def, transaction, true, debugEnabled,
                                            suspendedResources.orElse(null));
                                    return doBegin(nestedSynchronizationManager, transaction, def)
                                            .doOnSuccess(ignore -> prepareSynchronization(
                                                    nestedSynchronizationManager, status, def))
                                            .thenReturn(status);
                                }).onErrorResume(ErrorPredicates.RUNTIME_OR_ERROR,
                                        ex -> resume(nestedSynchronizationManager, null,
                                                suspendedResources.orElse(null)).then(Mono.error(ex)));
                            }));
        } else {
            // Create "empty" transaction: no actual transaction, but potentially synchronization.
            if (def.getIsolationLevel() != TransactionDefinition.ISOLATION_DEFAULT && logger.isWarnEnabled()) {
                logger.warn("Custom isolation level specified but no actual transaction initiated; "
                        + "isolation level will effectively be ignored: " + def);
            }
            return Mono.just(
                    prepareReactiveTransaction(synchronizationManager, def, null, true, debugEnabled, null));
        }
    });
}

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