Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
Var |
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| 1.1666666666666667;1.167 |
1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. 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 | package org.apache.commons.scxml.model; |
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18 | ||
19 | import java.util.Collection; |
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20 | ||
21 | import org.apache.commons.logging.Log; |
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22 | import org.apache.commons.scxml.Context; |
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23 | import org.apache.commons.scxml.ErrorReporter; |
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24 | import org.apache.commons.scxml.Evaluator; |
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25 | import org.apache.commons.scxml.EventDispatcher; |
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26 | import org.apache.commons.scxml.SCInstance; |
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27 | import org.apache.commons.scxml.SCXMLExpressionException; |
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28 | import org.apache.commons.scxml.TriggerEvent; |
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29 | ||
30 | /** |
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31 | * The class in this SCXML object model that corresponds to the |
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32 | * <var> SCXML element. |
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33 | * |
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34 | */ |
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35 | public class Var extends Action { |
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36 | ||
37 | /** |
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38 | * Serial version UID. |
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39 | */ |
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40 | private static final long serialVersionUID = 1L; |
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41 | ||
42 | /** |
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43 | * The name of the variable to be created. |
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44 | */ |
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45 | private String name; |
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46 | ||
47 | /** |
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48 | * The expression that evaluates to the initial value of the variable. |
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49 | */ |
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50 | private String expr; |
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51 | ||
52 | /** |
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53 | * Constructor. |
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54 | */ |
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55 | public Var() { |
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56 | 38 | super(); |
57 | 38 | } |
58 | ||
59 | /** |
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60 | * Get the expression that evaluates to the initial value |
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61 | * of the variable. |
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62 | * |
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63 | * @return String Returns the expr. |
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64 | */ |
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65 | public final String getExpr() { |
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66 | 6 | return expr; |
67 | } |
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68 | ||
69 | /** |
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70 | * Set the expression that evaluates to the initial value |
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71 | * of the variable. |
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72 | * |
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73 | * @param expr The expr to set. |
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74 | */ |
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75 | public final void setExpr(final String expr) { |
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76 | 38 | this.expr = expr; |
77 | 38 | } |
78 | ||
79 | /** |
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80 | * Get the name of the (new) variable. |
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81 | * |
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82 | * @return String Returns the name. |
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83 | */ |
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84 | public final String getName() { |
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85 | 6 | return name; |
86 | } |
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87 | ||
88 | /** |
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89 | * Set the name of the (new) variable. |
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90 | * |
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91 | * @param name The name to set. |
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92 | */ |
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93 | public final void setName(final String name) { |
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94 | 38 | this.name = name; |
95 | 38 | } |
96 | ||
97 | /** |
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98 | * {@inheritDoc} |
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99 | */ |
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100 | public void execute(final EventDispatcher evtDispatcher, |
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101 | final ErrorReporter errRep, final SCInstance scInstance, |
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102 | final Log appLog, final Collection derivedEvents) |
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103 | throws ModelException, SCXMLExpressionException { |
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104 | 34 | Context ctx = scInstance.getContext(getParentState()); |
105 | 34 | Evaluator eval = scInstance.getEvaluator(); |
106 | 34 | ctx.setLocal(getNamespacesKey(), getNamespaces()); |
107 | 34 | Object varObj = eval.eval(ctx, expr); |
108 | 34 | ctx.setLocal(getNamespacesKey(), null); |
109 | 34 | ctx.setLocal(name, varObj); |
110 | 34 | if (appLog.isDebugEnabled()) { |
111 | 0 | appLog.debug("<var>: Defined variable '" + name |
112 | + "' with initial value '" + String.valueOf(varObj) + "'"); |
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113 | } |
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114 | 34 | TriggerEvent ev = new TriggerEvent(name + ".change", |
115 | TriggerEvent.CHANGE_EVENT); |
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116 | 34 | derivedEvents.add(ev); |
117 | 34 | } |
118 | ||
119 | } |
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120 |