Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
LogUtils |
|
| 2.3333333333333335;2.333 |
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 | package org.apache.commons.scxml.env; |
|
18 | ||
19 | import java.util.Iterator; |
|
20 | import java.util.LinkedList; |
|
21 | ||
22 | import org.apache.commons.scxml.model.Transition; |
|
23 | import org.apache.commons.scxml.model.TransitionTarget; |
|
24 | ||
25 | /** |
|
26 | * Helper methods for Commons SCXML logging. |
|
27 | * |
|
28 | */ |
|
29 | public final class LogUtils { |
|
30 | ||
31 | /** |
|
32 | * Create a human readable log view of this transition. |
|
33 | * |
|
34 | * @param from The source TransitionTarget |
|
35 | * @param to The destination TransitionTarget |
|
36 | * @param transition The Transition that is taken |
|
37 | * @return String The human readable log entry |
|
38 | */ |
|
39 | public static String transToString(final TransitionTarget from, |
|
40 | final TransitionTarget to, final Transition transition) { |
|
41 | 1 | StringBuffer buf = new StringBuffer("transition ("); |
42 | 1 | buf.append("event = ").append(transition.getEvent()); |
43 | 1 | buf.append(", cond = ").append(transition.getCond()); |
44 | 1 | buf.append(", from = ").append(getTTPath(from)); |
45 | 1 | buf.append(", to = ").append(getTTPath(to)); |
46 | 1 | buf.append(')'); |
47 | 1 | return buf.toString(); |
48 | } |
|
49 | ||
50 | /** |
|
51 | * Write out this TransitionTarget location in a XPath style format. |
|
52 | * |
|
53 | * @param tt The TransitionTarget whose "path" is to needed |
|
54 | * @return String The XPath style location of the TransitionTarget within |
|
55 | * the SCXML document |
|
56 | */ |
|
57 | public static String getTTPath(final TransitionTarget tt) { |
|
58 | 4 | TransitionTarget parent = tt.getParent(); |
59 | 4 | if (parent == null) { |
60 | 3 | return "/" + tt.getId(); |
61 | } else { |
|
62 | 1 | LinkedList pathElements = new LinkedList(); |
63 | 1 | pathElements.addFirst(tt); |
64 | 3 | while (parent != null) { |
65 | 2 | pathElements.addFirst(parent); |
66 | 2 | parent = parent.getParent(); |
67 | } |
|
68 | 1 | StringBuffer names = new StringBuffer(); |
69 | 1 | for (Iterator i = pathElements.iterator(); i.hasNext();) { |
70 | 3 | TransitionTarget pathElement = (TransitionTarget) i.next(); |
71 | 3 | names.append('/').append(pathElement.getId()); |
72 | } |
|
73 | 1 | return names.toString(); |
74 | } |
|
75 | } |
|
76 | ||
77 | /** |
|
78 | * Discourage instantiation since this is a utility class. |
|
79 | */ |
|
80 | private LogUtils() { |
|
81 | 0 | super(); |
82 | 0 | } |
83 | ||
84 | } |