##### Coverage Report - org.jaxen.function.ConcatFunction

Classes in this File | Line Coverage | Branch Coverage | Complexity
ConcatFunction |
100% |
100% |
| 2.3333333333333335;2.333

1 |  |
     /*
2 |  |
      * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/ConcatFunction.java,v 1.8 2005/06/28 13:44:45 elharo Exp $
3 |  |
      * $Revision: 1.8 $
4 |  |
      * $Date: 2005/06/28 13:44:45 $
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: ConcatFunction.java,v 1.8 2005/06/28 13:44:45 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 |  |
      * <b>4.2</b> <code><i>string</i> concat(<i>string</i>,<i>string</i>,<i>string*</i>)</code>
75 |  |
      * <p>
76 |  |
      * Concatenates its arguments and returns the resulting string.
77 |  |
      * </p>
78 |  |
      *
79 |  |
      *  @author bob mcwhirter (bob@werken.com)
80 |  |
      *
81 |  |
      * @see <a href="http://www.w3.org/TR/xpath#function-concat">Section 4.2 of the XPath Specification</a>
82 |  |
      */
83 |  |
     public class ConcatFunction implements Function
84 |  |
     {
85 |  |
86 |  |
         /**
87 |  |
          * Create a new <code>ConcatFunction</code> object.
88 |  |
          */
89 | 294 |
         public ConcatFunction() {}
90 |  |
91 |  |
         /**
92 |  |
          * Concatenates the arguments and returns the resulting string.
93 |  |
          * Non-string items are first converted to strings as if by the
94 |  |
          * XPath <code>string()<code> function.
95 |  |
          *
96 |  |
          * @param context the context at the point in the
97 |  |
          *         expression when the function is called
98 |  |
          * @param args the list of strings to be concatenated
99 |  |
          *
100 |  |
          * @return a <code>String</code> containing the concatenation of the items
101 |  |
          *     of <code>args</code>
102 |  |
          *
103 |  |
          * @throws FunctionCallException if <code>args</code> has less than two items
104 |  |
          */
105 |  |
         public Object call(Context context,
106 |  |
                            List args) throws FunctionCallException
107 |  |
         {
108 | 174 |
             if ( args.size() >= 2 )
109 |  |
             {
110 | 168 |
                 return evaluate( args,
111 |  |
                                  context.getNavigator() );
112 |  |
             }
113 |  |
114 | 6 |
             throw new FunctionCallException("concat() requires at least two arguments");
115 |  |
         }
116 |  |
117 |  |
         /**
118 |  |
          * Converts each item in the list to a string and returns the
119 |  |
          * concatenation of these strings.
120 |  |
          * If necessary, each item is first converted to a <code>String</code>
121 |  |
          * as if by the XPath <code>string()</code> function.
122 |  |
          *
123 |  |
          * @param list the items to be concatenated
124 |  |
          * @param nav ignored
125 |  |
          *
126 |  |
          * @return the concatenation of the arguments
127 |  |
          */
128 |  |
        public static String evaluate(List list,
129 |  |
                                       Navigator nav)
130 |  |
         {
131 | 168 |
             StringBuffer result = new StringBuffer();
132 | 168 |
             Iterator argIter = list.iterator();
133 | 552 |
             while ( argIter.hasNext() )
134 |  |
             {
135 | 384 |
                 result.append( StringFunction.evaluate( argIter.next(),
136 |  |
                                                         nav ) );
137 |  |
             }
138 |  |
139 | 168 |
             return result.toString();
140 |  |
         }
141 |  |
     }