summaryrefslogtreecommitdiffstats
path: root/test/samples/apache/microwave-01.xml
blob: 86efa26f114fad215485a679a4926b808cd35021 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
<?xml version="1.0"?>
<!--
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
-->
<!--
   This document uses JSP 2.0 EL as the expressions language.
-->
<scxml xmlns="http://www.w3.org/2005/07/scxml"
       xmlns:cs="http://commons.apache.org/scxml"
       version="1.0"
       initialstate="off">
  
  <!--  trivial microwave oven example -->
  <state id="off">
    <!-- off state -->
    <transition event="turn_on" target="on"/>
  </state>

  <state id="on">
    <initial>
      <transition target="idle"/>
    </initial>

    <!-- on/pause state -->
    <onentry>
      <!-- we assume the cook_time is passed in as a context parameter -->
      <if cond="${empty cook_time}">
        <!-- default setting -->
        <cs:var name="cook_time" expr="${5}"/>
      </if>
      <!-- again, door_closed should be a part of a global context -->
      <if cond="${empty door_closed}">
        <!-- default setting -->
        <cs:var name="door_closed" expr="${true}"/>
      </if>
      <!-- timer variable -->
      <cs:var name="timer" expr="${0}"/>
    </onentry>

    <transition event="turn_off" target="off"/>

    <transition cond="${timer ge cook_time}" target="off"/>

    <state id="idle">
      <!-- default immediate transition -->
      <transition cond="${door_closed}" target="cooking"/>

      <!-- start cooking -->
      <transition event="door_close" target="cooking">
        <assign name="door_closed" expr="${true}"/>
      </transition>
    </state>

    <state id="cooking">
      <transition event="door_open" target="idle">
        <assign name="door_closed" expr="${false}"/>
      </transition> 
      <transition event="time" target="cooking">
        <assign name="timer" expr="${timer + 1}"/>
      </transition>
    </state>

  </state>

</scxml>