Coverage Report - org.apache.commons.scxml.model.If

Classes in this File Line Coverage Branch Coverage Complexity
If
96% 
100% 
2

 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.model;
 19  
 
 20  
 import java.util.ArrayList;
 21  
 import java.util.Collection;
 22  
 import java.util.Iterator;
 23  
 import java.util.List;
 24  
 
 25  
 import org.apache.commons.logging.Log;
 26  
 import org.apache.commons.scxml.Context;
 27  
 import org.apache.commons.scxml.ErrorReporter;
 28  
 import org.apache.commons.scxml.Evaluator;
 29  
 import org.apache.commons.scxml.EventDispatcher;
 30  
 import org.apache.commons.scxml.SCInstance;
 31  
 import org.apache.commons.scxml.SCXMLExpressionException;
 32  
 
 33  
 /**
 34  
  * The class in this SCXML object model that corresponds to the
 35  
  * <if> SCXML element, which serves as a container for conditionally
 36  
  * executed elements. <else> and <elseif> can optionally
 37  
  * appear within an <if> as immediate children, and serve to partition
 38  
  * the elements within an <if>.
 39  
  *
 40  
  */
 41  
 public class If extends Action {
 42  
 
 43  
     /**
 44  
      * An conditional expression which can be evaluated to true or false.
 45  
      */
 46  
     private String cond;
 47  
 
 48  
     /**
 49  
      * The set of executable elements (those that inheriting from
 50  
      * Action) that are contained in this <if> element.
 51  
      */
 52  
     private List actions;
 53  
 
 54  
     /**
 55  
      * The boolean value that dictates whether the particular child action
 56  
      * should be executed.
 57  
      */
 58  
     private boolean execute;
 59  
 
 60  
     /**
 61  
      * Constructor.
 62  
      */
 63  
     public If() {
 64  11
         super();
 65  11
         this.actions = new ArrayList();
 66  11
         this.execute = false;
 67  11
     }
 68  
 
 69  
     /**
 70  
      * Get the executable actions contained in this <if>.
 71  
      *
 72  
      * @return Returns the actions.
 73  
      */
 74  
     public final List getActions() {
 75  4
         return actions;
 76  
     }
 77  
 
 78  
     /**
 79  
      * Add an Action to the list of executable actions contained in
 80  
      * this <if>.
 81  
      *
 82  
      * @param action The action to add.
 83  
      */
 84  
     public final void addAction(final Action action) {
 85  14
         if (action != null) {
 86  14
             this.actions.add(action);
 87  
         }
 88  14
     }
 89  
 
 90  
     /**
 91  
      * Get the conditional expression.
 92  
      *
 93  
      * @return Returns the cond.
 94  
      */
 95  
     public final String getCond() {
 96  4
         return cond;
 97  
     }
 98  
 
 99  
     /**
 100  
      * Set the conditional expression.
 101  
      *
 102  
      * @param cond The cond to set.
 103  
      */
 104  
     public final void setCond(final String cond) {
 105  11
         this.cond = cond;
 106  11
     }
 107  
 
 108  
     /**
 109  
      * {@inheritDoc}
 110  
      */
 111  
     public void execute(final EventDispatcher evtDispatcher,
 112  
             final ErrorReporter errRep, final SCInstance scInstance,
 113  
             final Log appLog, final Collection derivedEvents)
 114  
     throws ModelException, SCXMLExpressionException {
 115  7
         State parentState = getParentState();
 116  7
         Context ctx = scInstance.getContext(parentState);
 117  7
         Evaluator eval = scInstance.getEvaluator();
 118  7
         execute = eval.evalCond(ctx, cond).booleanValue();
 119  
         // The "if" statement is a "container"
 120  7
         for (Iterator ifiter = actions.iterator(); ifiter.hasNext();) {
 121  11
             Action aa = (Action) ifiter.next();
 122  11
             if (execute && !(aa instanceof ElseIf)
 123  
                     && !(aa instanceof Else)) {
 124  7
                 aa.execute(evtDispatcher, errRep, scInstance, appLog,
 125  
                     derivedEvents);
 126  4
             } else if (execute
 127  
                     && (aa instanceof ElseIf || aa instanceof Else)) {
 128  0
                 break;
 129  4
             } else if (aa instanceof Else) {
 130  1
                 execute = true;
 131  3
             } else if (aa instanceof ElseIf) {
 132  1
                 execute = eval.evalCond(ctx, ((ElseIf) aa).getCond())
 133  
                         .booleanValue();
 134  
             }
 135  
         }
 136  7
     }
 137  
 
 138  
 }
 139