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ASF GitHub Bot commented on TOMEE-2301:
---------------------------------------
Github user brunobat commented on a diff in the pull request:
https://github.com/apache/tomee/pull/223#discussion_r237937619
--- Diff: examples/concurrency-utils/src/main/java/org/superbiz/executor/ManagedService.java
---
@@ -0,0 +1,89 @@
+package org.superbiz.executor;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import javax.annotation.Resource;
+import javax.enterprise.concurrent.ManagedExecutorService;
+import javax.enterprise.context.RequestScoped;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Supplier;
+
+import static java.util.Objects.nonNull;
+
+
+@RequestScoped
+public class ManagedService {
+
+ @Resource
+ private ManagedExecutorService executor;
+
+ /**
+ * Executes an opperation asynchronously, in a different thread provided by the {@link
ManagedExecutorService}.
+ * The computation will carry on after the return of the method.
+ *
+ * @param value The demo data.
+ * @return A {@link CompletableFuture} that will return immediately.
+ */
+ public CompletableFuture<Integer> asyncTask(final int value) {
+ return CompletableFuture
+ .supplyAsync(delayedTask(value, 100, null), executor) // Execute asynchronously.
+ .thenApply(i -> i + 1); // After the return of the task, do something
else with the result.
+ }
+
+ /**
+ * Executes an opperation asynchronously, in a different thread provided by the {@link
ManagedExecutorService}.
+ * The computation will carry on after the return of the method.
+ *
+ * @param value The demo data.
+ * @return A {@link CompletableFuture} that will return immediately.
+ */
+ public CompletableFuture<Integer> asyncTaskWithException(final int value) {
--- End diff --
Will do, it's a good tip. Thanks!
> Concurrency utilities example
> -----------------------------
>
> Key: TOMEE-2301
> URL: https://issues.apache.org/jira/browse/TOMEE-2301
> Project: TomEE
> Issue Type: Improvement
> Components: Examples and Documentation
> Affects Versions: 8.0.0-Final
> Reporter: Bruno Baptista
> Priority: Major
> Labels: concurrency, examples, pull-request-available
>
> This is an example to demontrate the Concurrency Utilities introduced in JEE7:
> [https://docs.oracle.com/javaee/7/tutorial/concurrency-utilities.htm#top]
> It will use CompletableFutures.
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