##### Coverage Report - org.apache.commons.scxml.env.LogUtils

Classes in this File | Line Coverage | Branch Coverage | Complexity
LogUtils |
91% |
100% |
| 2.3333333333333335;2.333

1 |  |
     /*
2 |  |
      *
3 |  |
      *   Copyright 2005 The Apache Software Foundation.
4 |  |
      *
5 |  |
      *  Licensed under the Apache License, Version 2.0 (the "License");
6 |  |
      *  you may not use this file except in compliance with the License.
7 |  |
      *  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 org.apache.commons.scxml.env;
19 |  |
20 |  |
     import java.util.Iterator;
21 |  |
     import java.util.LinkedList;
22 |  |
23 |  |
     import org.apache.commons.scxml.model.Transition;
24 |  |
     import org.apache.commons.scxml.model.TransitionTarget;
25 |  |
26 |  |
     /**
27 |  |
      * Helper methods for Commons SCXML logging.
28 |  |
      *
29 |  |
      */
30 |  |
     public final class LogUtils {
31 |  |
32 |  |
         /**
33 |  |
          * Create a human readable log view of this transition.
34 |  |
          *
35 |  |
          * @param from The source TransitionTarget
36 |  |
          * @param to The destination TransitionTarget
37 |  |
          * @param transition The Transition that is taken
38 |  |
          * @return String The human readable log entry
39 |  |
          */
40 |  |
         public static String transToString(final TransitionTarget from,
41 |  |
                 final TransitionTarget to, final Transition transition) {
42 | 1 |
             StringBuffer buf = new StringBuffer("transition (");
43 | 1 |
             buf.append("event = ").append(transition.getEvent());
44 | 1 |
             buf.append(", cond = ").append(transition.getCond());
45 | 1 |
             buf.append(", from = ").append(getTTPath(from));
46 | 1 |
             buf.append(", to = ").append(getTTPath(to));
47 | 1 |
             buf.append(')');
48 | 1 |
             return buf.toString();
49 |  |
         }
50 |  |
51 |  |
         /**
52 |  |
          * Write out this TransitionTarget location in a XPath style format.
53 |  |
          *
54 |  |
          * @param tt The TransitionTarget whose &quot;path&quot; is to needed
55 |  |
          * @return String The XPath style location of the TransitionTarget within
56 |  |
          *                the SCXML document
57 |  |
          */
58 |  |
         public static String getTTPath(final TransitionTarget tt) {
59 | 4 |
             TransitionTarget parent = tt.getParent();
60 | 4 |
             if (parent == null) {
61 | 3 |
                 return "/" + tt.getId();
62 |  |
             } else {
63 | 1 |
                 LinkedList pathElements = new LinkedList();
64 | 1 |
                 pathElements.addFirst(tt);
65 | 3 |
                 while (parent != null) {
66 | 2 |
                     pathElements.addFirst(parent);
67 | 2 |
                     parent = parent.getParent();
68 |  |
                 }
69 | 1 |
                 StringBuffer names = new StringBuffer();
70 | 1 |
                 for (Iterator i = pathElements.iterator(); i.hasNext();) {
71 | 3 |
                     TransitionTarget pathElement = (TransitionTarget) i.next();
72 | 3 |
                     names.append('/').append(pathElement.getId());
73 |  |
                 }
74 | 1 |
                 return names.toString();
75 |  |
             }
76 |  |
         }
77 |  |
78 |  |
         /**
79 |  |
          * Discourage instantiation since this is a utility class.
80 |  |
          */
81 |  |
         private LogUtils() {
82 | 0 |
             super();
83 | 0 |
         }
84 |  |
85 |  |
     }