1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package com.github.dexecutor.core;
19
20 import java.io.Serializable;
21 import java.util.concurrent.Callable;
22
23 import com.github.dexecutor.core.TaskProvider;
24 import com.github.dexecutor.core.TaskProvider.Task;
25 import com.github.dexecutor.core.graph.Node;
26 /**
27 * A dexecutor task which terminates the graph execution after exception
28 *
29 * @author Nadeem Mohammad
30 *
31 * @param <T> Node Id Type
32 * @param <R> Result type
33 */
34 class TerminatingTask<T extends Comparable<T>, R> implements Callable<Node<T, R>> , Serializable {
35
36 private static final long serialVersionUID = 1L;
37 private Node<T, R> node;
38 private TaskProvider<T, R> taskProvider;
39
40 public TerminatingTask(final TaskProvider<T, R> taskProvider, final Node<T, R> graphNode) {
41 this.taskProvider = taskProvider;
42 this.node = graphNode;
43 }
44
45 public Node<T, R> call() throws Exception {
46 Task<T, R> task = new ExecutorTask<T, R>(node, this.taskProvider.provid(node.getValue()));
47 task.setConsiderExecutionError(true);
48 R result = task.execute();
49 this.node.setResult(result);
50 return this.node;
51 }
52
53 }