| 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 |