Classes in this File | Line Coverage | Branch Coverage | Complexity | |||||||
Var |
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| 1.0;1 |
1 | /* |
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2 | * |
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3 | * Copyright 2005 The Apache Software Foundation. |
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4 | * |
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5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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6 | * you may not use this file except in compliance with the License. |
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7 | * You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | * |
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17 | */ |
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18 | package org.apache.commons.scxml.model; |
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19 | ||
20 | import java.util.Collection; |
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21 | ||
22 | import org.apache.commons.logging.Log; |
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23 | import org.apache.commons.scxml.Context; |
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24 | import org.apache.commons.scxml.ErrorReporter; |
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25 | import org.apache.commons.scxml.Evaluator; |
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26 | import org.apache.commons.scxml.EventDispatcher; |
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27 | import org.apache.commons.scxml.SCInstance; |
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28 | import org.apache.commons.scxml.SCXMLExpressionException; |
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29 | import org.apache.commons.scxml.TriggerEvent; |
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30 | ||
31 | /** |
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32 | * The class in this SCXML object model that corresponds to the |
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33 | * <var> SCXML element. |
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34 | * |
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35 | */ |
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36 | public class Var extends Action { |
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37 | ||
38 | /** |
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39 | * The name of the variable to be created. |
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40 | */ |
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41 | private String name; |
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42 | ||
43 | /** |
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44 | * The expression that evaluates to the initial value of the variable. |
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45 | */ |
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46 | private String expr; |
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47 | ||
48 | /** |
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49 | * Constructor. |
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50 | */ |
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51 | public Var() { |
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52 | 33 | super(); |
53 | 33 | } |
54 | ||
55 | /** |
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56 | * Get the expression that evaluates to the initial value |
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57 | * of the variable. |
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58 | * |
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59 | * @return String Returns the expr. |
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60 | */ |
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61 | public final String getExpr() { |
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62 | 6 | return expr; |
63 | } |
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64 | ||
65 | /** |
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66 | * Set the expression that evaluates to the initial value |
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67 | * of the variable. |
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68 | * |
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69 | * @param expr The expr to set. |
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70 | */ |
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71 | public final void setExpr(final String expr) { |
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72 | 33 | this.expr = expr; |
73 | 33 | } |
74 | ||
75 | /** |
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76 | * Get the name of the (new) variable. |
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77 | * |
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78 | * @return String Returns the name. |
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79 | */ |
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80 | public final String getName() { |
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81 | 6 | return name; |
82 | } |
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83 | ||
84 | /** |
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85 | * Set the name of the (new) variable. |
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86 | * |
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87 | * @param name The name to set. |
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88 | */ |
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89 | public final void setName(final String name) { |
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90 | 33 | this.name = name; |
91 | 33 | } |
92 | ||
93 | /** |
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94 | * {@inheritDoc} |
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95 | */ |
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96 | public void execute(final EventDispatcher evtDispatcher, |
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97 | final ErrorReporter errRep, final SCInstance scInstance, |
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98 | final Log appLog, final Collection derivedEvents) |
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99 | throws ModelException, SCXMLExpressionException { |
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100 | 28 | Context ctx = scInstance.getContext(getParentState()); |
101 | 28 | Evaluator eval = scInstance.getEvaluator(); |
102 | 28 | Object varObj = eval.eval(ctx, expr); |
103 | 28 | ctx.setLocal(name, varObj); |
104 | 28 | TriggerEvent ev = new TriggerEvent(name + ".change", |
105 | TriggerEvent.CHANGE_EVENT); |
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106 | 28 | derivedEvents.add(ev); |
107 | 28 | } |
108 | ||
109 | } |
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110 |