org.springframework.core.task.support.TaskExecutorAdapter Java Examples

/**
 * Determine the specific executor to use when executing the given method.
 * Should preferably return an {@link AsyncListenableTaskExecutor} implementation.
 * @return the executor to use (or {@code null}, but just if no default executor is available)
 */
@Nullable
protected AsyncTaskExecutor determineAsyncExecutor(Method method) {
	AsyncTaskExecutor executor = this.executors.get(method);
	if (executor == null) {
		Executor targetExecutor;
		String qualifier = getExecutorQualifier(method);
		if (StringUtils.hasLength(qualifier)) {
			targetExecutor = findQualifiedExecutor(this.beanFactory, qualifier);
		}
		else {
			targetExecutor = this.defaultExecutor.get();
		}
		if (targetExecutor == null) {
			return null;
		}
		executor = (targetExecutor instanceof AsyncListenableTaskExecutor ?
				(AsyncListenableTaskExecutor) targetExecutor : new TaskExecutorAdapter(targetExecutor));
		this.executors.put(method, executor);
	}
	return executor;
}
 

/**
 * Determine the specific executor to use when executing the given method.
 * Should preferably return an {@link AsyncListenableTaskExecutor} implementation.
 * @return the executor to use (or {@code null}, but just if no default executor is available)
 */
@Nullable
protected AsyncTaskExecutor determineAsyncExecutor(Method method) {
	AsyncTaskExecutor executor = this.executors.get(method);
	if (executor == null) {
		Executor targetExecutor;
		String qualifier = getExecutorQualifier(method);
		if (StringUtils.hasLength(qualifier)) {
			targetExecutor = findQualifiedExecutor(this.beanFactory, qualifier);
		}
		else {
			targetExecutor = this.defaultExecutor.get();
		}
		if (targetExecutor == null) {
			return null;
		}
		executor = (targetExecutor instanceof AsyncListenableTaskExecutor ?
				(AsyncListenableTaskExecutor) targetExecutor : new TaskExecutorAdapter(targetExecutor));
		this.executors.put(method, executor);
	}
	return executor;
}
 

/**
 * Specify the {@link java.util.concurrent.Executor} to delegate to.
 * <p>Autodetects a JSR-236 {@link javax.enterprise.concurrent.ManagedExecutorService}
 * in order to expose {@link javax.enterprise.concurrent.ManagedTask} adapters for it.
 */
public final void setConcurrentExecutor(Executor concurrentExecutor) {
	if (concurrentExecutor != null) {
		this.concurrentExecutor = concurrentExecutor;
		if (managedExecutorServiceClass != null && managedExecutorServiceClass.isInstance(concurrentExecutor)) {
			this.adaptedExecutor = new ManagedTaskExecutorAdapter(concurrentExecutor);
		}
		else {
			this.adaptedExecutor = new TaskExecutorAdapter(concurrentExecutor);
		}
	}
	else {
		this.concurrentExecutor = Executors.newSingleThreadExecutor();
		this.adaptedExecutor = new TaskExecutorAdapter(this.concurrentExecutor);
	}
}
 

/**
 * Determine the specific executor to use when executing the given method.
 * Should preferably return an {@link AsyncListenableTaskExecutor} implementation.
 * @return the executor to use (or {@code null}, but just if no default executor has been set)
 */
protected AsyncTaskExecutor determineAsyncExecutor(Method method) {
	AsyncTaskExecutor executor = this.executors.get(method);
	if (executor == null) {
		Executor executorToUse = this.defaultExecutor;
		String qualifier = getExecutorQualifier(method);
		if (StringUtils.hasLength(qualifier)) {
			if (this.beanFactory == null) {
				throw new IllegalStateException("BeanFactory must be set on " + getClass().getSimpleName() +
						" to access qualified executor '" + qualifier + "'");
			}
			executorToUse = BeanFactoryAnnotationUtils.qualifiedBeanOfType(
					this.beanFactory, Executor.class, qualifier);
		}
		else if (executorToUse == null) {
			return null;
		}
		executor = (executorToUse instanceof AsyncListenableTaskExecutor ?
				(AsyncListenableTaskExecutor) executorToUse : new TaskExecutorAdapter(executorToUse));
		this.executors.put(method, executor);
	}
	return executor;
}
 

/**
 * Specify the {@link java.util.concurrent.Executor} to delegate to.
 * <p>Autodetects a JSR-236 {@link javax.enterprise.concurrent.ManagedExecutorService}
 * in order to expose {@link javax.enterprise.concurrent.ManagedTask} adapters for it.
 */
public final void setConcurrentExecutor(Executor concurrentExecutor) {
	if (concurrentExecutor != null) {
		this.concurrentExecutor = concurrentExecutor;
		if (managedExecutorServiceClass != null && managedExecutorServiceClass.isInstance(concurrentExecutor)) {
			this.adaptedExecutor = new ManagedTaskExecutorAdapter(concurrentExecutor);
		}
		else {
			this.adaptedExecutor = new TaskExecutorAdapter(concurrentExecutor);
		}
	}
	else {
		this.concurrentExecutor = Executors.newSingleThreadExecutor();
		this.adaptedExecutor = new TaskExecutorAdapter(this.concurrentExecutor);
	}
}
 

/**
 * Determine the specific executor to use when executing the given method.
 * Should preferably return an {@link AsyncListenableTaskExecutor} implementation.
 * @return the executor to use (or {@code null}, but just if no default executor is available)
 */
protected AsyncTaskExecutor determineAsyncExecutor(Method method) {
	AsyncTaskExecutor executor = this.executors.get(method);
	if (executor == null) {
		Executor targetExecutor;
		String qualifier = getExecutorQualifier(method);
		if (StringUtils.hasLength(qualifier)) {
			targetExecutor = findQualifiedExecutor(this.beanFactory, qualifier);
		}
		else {
			targetExecutor = this.defaultExecutor;
			if (targetExecutor == null) {
				synchronized (this.executors) {
					if (this.defaultExecutor == null) {
						this.defaultExecutor = getDefaultExecutor(this.beanFactory);
					}
					targetExecutor = this.defaultExecutor;
				}
			}
		}
		if (targetExecutor == null) {
			return null;
		}
		executor = (targetExecutor instanceof AsyncListenableTaskExecutor ?
				(AsyncListenableTaskExecutor) targetExecutor : new TaskExecutorAdapter(targetExecutor));
		this.executors.put(method, executor);
	}
	return executor;
}
 

/**
 * Create a new ConcurrentTaskExecutor, using a single thread executor as default.
 * @see java.util.concurrent.Executors#newSingleThreadExecutor()
 */
public ConcurrentTaskExecutor() {
	this.concurrentExecutor = Executors.newSingleThreadExecutor();
	this.adaptedExecutor = new TaskExecutorAdapter(this.concurrentExecutor);
}
 

private static TaskExecutorAdapter getAdaptedExecutor(Executor concurrentExecutor) {
	if (managedExecutorServiceClass != null && managedExecutorServiceClass.isInstance(concurrentExecutor)) {
		return new ManagedTaskExecutorAdapter(concurrentExecutor);
	}
	return new TaskExecutorAdapter(concurrentExecutor);
}
 

/**
 * Create a new ConcurrentTaskExecutor, using a single thread executor as default.
 * @see java.util.concurrent.Executors#newSingleThreadExecutor()
 */
public ConcurrentTaskExecutor() {
	this.concurrentExecutor = Executors.newSingleThreadExecutor();
	this.adaptedExecutor = new TaskExecutorAdapter(this.concurrentExecutor);
}
 

private static TaskExecutorAdapter getAdaptedExecutor(Executor concurrentExecutor) {
	if (managedExecutorServiceClass != null && managedExecutorServiceClass.isInstance(concurrentExecutor)) {
		return new ManagedTaskExecutorAdapter(concurrentExecutor);
	}
	return new TaskExecutorAdapter(concurrentExecutor);
}