Coverage Report - org.jaxen.expr.DefaultUnionExpr

Classes in this Package	Line Coverage	Branch Coverage	Complexity
DefaultUnionExpr	86%	100%	2.0;2

1		/*
2		* $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultUnionExpr.java,v 1.12 2005/04/03 01:30:10 elharo Exp $
3		* $Revision: 1.12 $
4		* $Date: 2005/04/03 01:30:10 $
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: DefaultUnionExpr.java,v 1.12 2005/04/03 01:30:10 elharo Exp $
60		*/
61
62
63
64		package org.jaxen.expr;
65
66		import java.util.ArrayList;
67		import java.util.Collections;
68		import java.util.HashSet;
69		import java.util.Iterator;
70		import java.util.List;
71		import java.util.Set;
72		import org.jaxen.Context;
73		import org.jaxen.JaxenException;
74		import org.jaxen.XPathSyntaxException;
75
76		public class DefaultUnionExpr extends DefaultBinaryExpr implements UnionExpr
77		{
78		public DefaultUnionExpr(Expr lhs,
79		Expr rhs)
80		{
81	20	super( lhs,
82		rhs );
83	20	}
84
85		public String getOperator()
86		{
87	6	return "|";
88		}
89
90		public String toString()
91		{
92	0	return "[(DefaultUnionExpr): " + getLHS() + ", " + getRHS() + "]";
93		}
94
95		public Object evaluate(Context context) throws JaxenException
96		{
97	15	List results = new ArrayList();
98
99		try {
100	15	List lhsResults = (List) getLHS().evaluate( context );
101	10	List rhsResults = (List) getRHS().evaluate( context );
102
103	9	Set unique = new HashSet();
104
105	9	results.addAll( lhsResults );
106	9	unique.addAll( lhsResults );
107
108	9	Iterator rhsIter = rhsResults.iterator();
109
110	27	while ( rhsIter.hasNext() )
111		{
112	18	Object each = rhsIter.next();
113
114	18	if ( ! unique.contains( each ) )
115		{
116	13	results.add( each );
117	13	unique.add( each );
118		}
119		}
120
121	9	Collections.sort(results, new NodeComparator(context.getNavigator()));
122
123	9	return results;
124		}
125	6	catch (ClassCastException e) {
126	6	throw new XPathSyntaxException(this.getText(), context.getPosition(), "Unions are only allowed over node-sets");
127		}
128		}
129
130		public void accept(Visitor visitor)
131		{
132	0	visitor.visit(this);
133	0	}
134
135		}
136