Coverage Report

Coverage Report - org.jaxen.function.NotFunction

Classes in this File

Line Coverage

Branch Coverage

Complexity

NotFunction

100%

5/5

100%

2/2

 /*
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/NotFunction.java,v 1.9 2006/02/05 21:47:41 elharo Exp $
  * $Revision: 1.9 $
  * $Date: 2006/02/05 21:47:41 $
  *
  * ====================================================================
  *
  * Copyright 2000-2002 bob mcwhirter & James Strachan.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  * 
  *   * Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 
  *   * Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  * 
  *   * Neither the name of the Jaxen Project nor the names of its
  *     contributors may be used to endorse or promote products derived 
  *     from this software without specific prior written permission.
  * 
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * ====================================================================
  * This software consists of voluntary contributions made by many 
  * individuals on behalf of the Jaxen Project and was originally 
  * created by bob mcwhirter <bob@werken.com> and 
  * James Strachan <jstrachan@apache.org>.  For more information on the 
  * Jaxen Project, please see <http://www.jaxen.org/>.
  * 
  * $Id: NotFunction.java,v 1.9 2006/02/05 21:47:41 elharo Exp $
  */
 
 package org.jaxen.function;
 
 import java.util.List;
 
 import org.jaxen.Context;
 import org.jaxen.Function;
 import org.jaxen.FunctionCallException;
 import org.jaxen.Navigator;
 
 /**
  * <p><b>4.3</b> <code><i>boolean</i> not(<i>boolean</i>)</code> </p>
  * 
  * 
  * <blockquote src="http://www.w3.org/TR/xpath#function-not">
  * The <b>not</b> function returns true if its argument is false, and false otherwise.
  * </blockquote>
  * 
  * @author bob mcwhirter (bob @ werken.com)
  * @see <a href="http://www.w3.org/TR/xpath#function-not" target="_top">Section 4.3 of the XPath Specification</a>
  */
 public class NotFunction implements Function
 {
 
     /**
      * Create a new <code>NotFunction</code> object.
      */
     public NotFunction() {}
     
     /**
      * Returns <code>Boolean.TRUE</code> if the boolean value of 
      * <code>args.get(0)</code> is false, and <code>Boolean.FALSE</code> otherwise.
      * The boolean value is calculated as if by the XPath <code>boolean</code>
      * function. 
      * 
      * @param context the context at the point in the
      *         expression where the function is called
      * @param args a single element list
      * 
      * @return <code>Boolean.TRUE</code> if the boolean value of 
      * <code>obj</code> is false, and <code>Boolean.FALSE</code> otherwise
      * 
      * @throws FunctionCallException if <code>args</code> does not have exactly one argument
      */
     public Object call(Context context,
                        List args) throws FunctionCallException
     {
         if (args.size() == 1)
         {
             return evaluate( args.get(0), context.getNavigator() );
         }
 
         throw new FunctionCallException( "not() requires one argument." );
     }
 
     /**
      * Returns <code>Boolean.TRUE</code> if the boolean value of 
      * <code>obj</code> is false, and <code>Boolean.FALSE</code> otherwise.
      * The boolean value is calculated as if by the XPath <code>boolean</code>
      * function. 
      * 
      * @param obj the object whose boolean value is inverted
      * @param nav the <code>Navigator</code> used to calculate the boolean value of <code>obj</code>
      * 
      * @return <code>Boolean.TRUE</code> if the boolean value of 
      * <code>obj</code> is false, and <code>Boolean.FALSE</code> otherwise
      */
     public static Boolean evaluate(Object obj, Navigator nav)
     {
         return ( ( BooleanFunction.evaluate( obj, nav ).booleanValue() )
                  ? Boolean.FALSE
                  : Boolean.TRUE
                  );
     }
     
 }

1		/*
2		* $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/NotFunction.java,v 1.9 2006/02/05 21:47:41 elharo Exp $
3		* $Revision: 1.9 $
4		* $Date: 2006/02/05 21:47:41 $
5		*
6		* ====================================================================
7		*
8		* Copyright 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 are
13		* met:
14		*
15		* * Redistributions of source code must retain the above copyright
16		* notice, this list of conditions and the following disclaimer.
17		*
18		* * Redistributions in binary form must reproduce the above copyright
19		* notice, this list of conditions and the following disclaimer in the
20		* documentation and/or other materials provided with the distribution.
21		*
22		* * Neither the name of the Jaxen Project nor the names of its
23		* contributors may be used to endorse or promote products derived
24		* from this software without specific prior written permission.
25		*
26		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27		* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28		* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
29		* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
30		* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31		* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32		* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33		* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34		* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35		* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36		* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37		*
38		* ====================================================================
39		* This software consists of voluntary contributions made by many
40		* individuals on behalf of the Jaxen Project and was originally
41		* created by bob mcwhirter <bob@werken.com> and
42		* James Strachan <jstrachan@apache.org>. For more information on the
43		* Jaxen Project, please see <http://www.jaxen.org/>.
44		*
45		* $Id: NotFunction.java,v 1.9 2006/02/05 21:47:41 elharo Exp $
46		*/
47
48		package org.jaxen.function;
49
50		import java.util.List;
51
52		import org.jaxen.Context;
53		import org.jaxen.Function;
54		import org.jaxen.FunctionCallException;
55		import org.jaxen.Navigator;
56
57		/**
58		* <p><b>4.3</b> <code><i>boolean</i> not(<i>boolean</i>)</code> </p>
59		*
60		*
61		* <blockquote src="http://www.w3.org/TR/xpath#function-not">
62		* The <b>not</b> function returns true if its argument is false, and false otherwise.
63		* </blockquote>
64		*
65		* @author bob mcwhirter (bob @ werken.com)
66		* @see <a href="http://www.w3.org/TR/xpath#function-not" target="_top">Section 4.3 of the XPath Specification</a>
67		*/
68		public class NotFunction implements Function
69		{
70
71		/**
72		* Create a new <code>NotFunction</code> object.
73		*/
74	106	public NotFunction() {}
75
76		/**
77		* Returns <code>Boolean.TRUE</code> if the boolean value of
78		* <code>args.get(0)</code> is false, and <code>Boolean.FALSE</code> otherwise.
79		* The boolean value is calculated as if by the XPath <code>boolean</code>
80		* function.
81		*
82		* @param context the context at the point in the
83		* expression where the function is called
84		* @param args a single element list
85		*
86		* @return <code>Boolean.TRUE</code> if the boolean value of
87		* <code>obj</code> is false, and <code>Boolean.FALSE</code> otherwise
88		*
89		* @throws FunctionCallException if <code>args</code> does not have exactly one argument
90		*/
91		public Object call(Context context,
92		List args) throws FunctionCallException
93		{
94	14	if (args.size() == 1)
95		{
96	10	return evaluate( args.get(0), context.getNavigator() );
97		}
98
99	4	throw new FunctionCallException( "not() requires one argument." );
100		}
101
102		/**
103		* Returns <code>Boolean.TRUE</code> if the boolean value of
104		* <code>obj</code> is false, and <code>Boolean.FALSE</code> otherwise.
105		* The boolean value is calculated as if by the XPath <code>boolean</code>
106		* function.
107		*
108		* @param obj the object whose boolean value is inverted
109		* @param nav the <code>Navigator</code> used to calculate the boolean value of <code>obj</code>
110		*
111		* @return <code>Boolean.TRUE</code> if the boolean value of
112		* <code>obj</code> is false, and <code>Boolean.FALSE</code> otherwise
113		*/
114		public static Boolean evaluate(Object obj, Navigator nav)
115		{
116	10	return ( ( BooleanFunction.evaluate( obj, nav ).booleanValue() )
117		? Boolean.FALSE
118		: Boolean.TRUE
119		);
120		}
121
122		}