The design ideas and principles of Javax Enterprise Concurrent API frameworks

Javax Enterprise Concurrent API framework design ideas and principles analysis The Javax Enterprise Concurrent API framework is a Java standard specification for concurrent programming in enterprise applications.It provides a set of interfaces, annotations, and classes to help developers handle concurrent operations easier.This article will introduce the design ideas and principles of the Javax Enterprise Concurrent API framework, and provide some Java code examples to illustrate its usage. Design ideas: Javax Enterprise Concurrent API framework aims to simplify concurrent programming and provide a reliable and efficient way to handle concurrent operations.It uses the following design ideas: 1. Standard specifications: Javax Enterprise Concurrent API is a standard specification that defines a set of interfaces, annotations, and classes to ensure that the same concurrent programming model can be used in different Java enterprise applications. 2. Highly abstract: The API framework provides a highly abstract interface and class, so that developers can focus on business logic without having to care about the concurrency details of the bottom.It hides the complexity of the underlying concurrent operation and provides an easy -to -use interface and method. 3. Container management: The framework uses the Java EE container to manage concurrent operations.It can be seamlessly integrated with the Java EE container, using the life cycle management mechanism of the container to ensure the correct execution of concurrent operations. 4. Note drive: The API framework uses annotations to mark the concurrent operation and execution strategy.Developers can use annotations to specify the type of concurrent operation, such as parallel execution, serial execution, or other custom strategies. Original analysis: 1. Pailaering control: Javax Enterprise Concurrent API framework provides a set of interfaces and classes to handle concurrent control.The most important interface is ManageDexecutorService, which is an extensible ExecutorService that is used to perform concurrent tasks.Developers can use this interface to submit concurrency tasks and manage tasks execution. Here are a sample code that uses ManageDexecutorservice: @ApplicationScoped public class MyService { @Resource private ManagedExecutorService executorService; public void performConcurrentTasks() { List<Callable<String>> tasks = new ArrayList<>(); // Add concurrent task to list of task lists tasks.add(new MyTask()); tasks.add(new MyAnotherTask()); try { // Submit a concurrent task List<Future<String>> results = executorService.invokeAll(tasks); // The results of the processing concurrency for (Future<String> result : results) { String taskResult = result.get(); // Treat the results of the task } } catch (InterruptedException | ExecutionException e) { // Treatment abnormalities } } private class MyTask implements Callable<String> { @Override public String call() throws Exception { // The logic of concurrent mission return "Task 1 Result"; } } private class MyAnotherTask implements Callable<String> { @Override public String call() throws Exception { // The logic of concurrent mission return "Task 2 Result"; } } } In the above example, by injecting ManageDexecutorService, a group of concurrent tasks can be submitted and the task can be submitted. 2. Parallel context: Javax Enterprise Concurrent API framework introduces the concept of concurrent context to share data between concurrent tasks.It provides a ConcrrentContext interface for management complicated context.Developers can create, obtain and destroy the context of the implementation, acquisition, and destruction of the implementation of the implementation of the ConcurrentContext class. The following is an example code that uses concurrent context: @ApplicationScoped public class MyService { @Resource private ConcurrentContext concurrentContext; public void performConcurrentTasks() { try { // Create concurrent context ConcurrentContextController contextController = concurrentContext.createNewContext(); contextController.activate(); // Execute the task in concurrent context CompletableFuture<String> future1 = CompletableFuture.supplyAsync(() -> performTask("Task 1")); CompletableFuture<String> future2 = CompletableFuture.supplyAsync(() -> performTask("Task 2")); // Execute other tasks // Waiting for concurrent tasks to complete CompletableFuture.allOf(future1, future2).join(); // Obtain and deal with the results of the concurrent task String result1 = future1.get(); String result2 = future2.get(); // Treat the results of the task // Destroyed concurrent context contextController.deactivate(); contextController.destroy(); } catch (Exception e) { // Treatment abnormalities } } private String performTask(String taskName) { // The logic of concurrent mission return taskName + " Result"; } } In the above example, use ConcurrenTContext to create concurrent context, and perform concurrent tasks in the context.Use CompletableFuture to perform asynchronous tasks, and use ConcurrenTContextController to manage the life cycle of concurrent context. Summarize: The Javax Enterprise Concurrent API framework is a Java standard specification for concurrent programming in enterprise applications.It simplifies concurrent programming by abstraction and packaging and concurrent operation, and provides a reliable and efficient way to handle concurrent operations.This article introduces the design ideas and principles of the framework, and provides some Java code examples to illustrate its usage.