Coverage Report - org.jaxen.function.SumFunction

Classes in this Package	Line Coverage	Branch Coverage	Complexity
SumFunction	100%	100%	4.0;4

1		/*
2		* $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/SumFunction.java,v 1.6 2005/02/08 01:32:20 elharo Exp $
3		* $Revision: 1.6 $
4		* $Date: 2005/02/08 01:32:20 $
5		*
6		* ====================================================================
7		*
8		* Copyright (C) 2000-2002 bob mcwhirter & James Strachan.
9		* All rights reserved.
10		*
11		* Redistribution and use in source and binary forms, with or without
12		* modification, are permitted provided that the following conditions
13		* are met:
14		*
15		* 1. Redistributions of source code must retain the above copyright
16		* notice, this list of conditions, and the following disclaimer.
17		*
18		* 2. Redistributions in binary form must reproduce the above copyright
19		* notice, this list of conditions, and the disclaimer that follows
20		* these conditions in the documentation and/or other materials
21		* provided with the distribution.
22		*
23		* 3. The name "Jaxen" must not be used to endorse or promote products
24		* derived from this software without prior written permission. For
25		* written permission, please contact license@jaxen.org.
26		*
27		* 4. Products derived from this software may not be called "Jaxen", nor
28		* may "Jaxen" appear in their name, without prior written permission
29		* from the Jaxen Project Management (pm@jaxen.org).
30		*
31		* In addition, we request (but do not require) that you include in the
32		* end-user documentation provided with the redistribution and/or in the
33		* software itself an acknowledgement equivalent to the following:
34		* "This product includes software developed by the
35		* Jaxen Project (http://www.jaxen.org/)."
36		* Alternatively, the acknowledgment may be graphical using the logos
37		* available at http://www.jaxen.org/
38		*
39		* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
40		* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41		* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42		* DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT
43		* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
45		* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
46		* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
47		* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48		* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
49		* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50		* SUCH DAMAGE.
51		*
52		* ====================================================================
53		* This software consists of voluntary contributions made by many
54		* individuals on behalf of the Jaxen Project and was originally
55		* created by bob mcwhirter <bob@werken.com> and
56		* James Strachan <jstrachan@apache.org>. For more information on the
57		* Jaxen Project, please see <http://www.jaxen.org/>.
58		*
59		* $Id: SumFunction.java,v 1.6 2005/02/08 01:32:20 elharo Exp $
60		*/
61
62
63		package org.jaxen.function;
64
65		import java.util.Iterator;
66		import java.util.List;
67
68		import org.jaxen.Context;
69		import org.jaxen.Function;
70		import org.jaxen.FunctionCallException;
71		import org.jaxen.Navigator;
72
73		/**
74		* <p><b>4.4</b> <code><i>number</i> sum(<i>node-set</i>)</code>
75		*
76		* @author bob mcwhirter (bob @ werken.com)
77		*/
78	41	public class SumFunction implements Function
79		{
80
81		public Object call(Context context,
82		List args) throws FunctionCallException
83		{
84
85	10	if (args.size() == 1)
86		{
87	9	return evaluate( args.get(0),
88		context.getNavigator() );
89		}
90
91	1	throw new FunctionCallException( "sum() requires one argument." );
92		}
93
94		public static Double evaluate(Object obj,
95		Navigator nav) throws FunctionCallException
96		{
97	9	double sum = 0;
98	9	double term = 0;
99
100	9	if (obj instanceof List)
101		{
102	8	Iterator nodeIter = ((List)obj).iterator();
103
104	216	while ( nodeIter.hasNext() )
105		{
106	208	term = NumberFunction.evaluate( nodeIter.next(),
107		nav ).doubleValue();
108
109	208	sum += term;
110		}
111		}
112		else
113		{
114	1	throw new FunctionCallException("The argument to the sum function must be a node-set");
115		}
116
117	8	return new Double(sum);
118		}
119		}