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

Classes in this File	Line Coverage	Branch Coverage	Complexity
If	96%	100%	2.0;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