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.executor;
19
20 import java.util.ArrayList;
21 import java.util.List;
22 /**
23 * Wrapper class around @ExecutionResult
24 *
25 * @author Nadeem Mohammad
26 *
27 * @param <T> Type of Node/Task ID
28 * @param <R> Type of Node/Task result
29 */
30
31 public final class ExecutionResults<T, R> {
32
33 private List<ExecutionResult<T, R>> results = new ArrayList<ExecutionResult<T, R>>();
34
35 /**
36 * adds {@code result} to existing collection of results
37 *
38 * @param result Result to be added to all results
39 */
40 public void add(final ExecutionResult<T, R> result) {
41 this.results.add(result);
42 }
43 /**
44 *
45 * @return the first {@link ExecutionResult in the collection}
46 */
47 public ExecutionResult<T, R> getFirst() {
48 if (this.results.isEmpty()) {
49 return null;
50 } else {
51 return this.results.iterator().next();
52 }
53 }
54 /**
55 *
56 * @return {@code true} If there is any result
57 * {@code false} if no result
58 */
59 public boolean hasAnyParentResult() {
60 if (this.results.isEmpty()) {
61 return false;
62 } else {
63 return true;
64 }
65 }
66 /**
67 *
68 * @return all result in the collection
69 */
70 public List<ExecutionResult<T, R>> getAll() {
71 return new ArrayList<ExecutionResult<T, R>>(this.results);
72 }
73
74 @Override
75 public String toString() {
76 return this.results.toString();
77 }
78 }