Coverage Report - org.jaxen.expr.DefaultFilterExpr

Classes in this Package	Line Coverage	Branch Coverage	Complexity
DefaultFilterExpr	45%	43%	1.8333333333333333;1.833

1		/*
2		* $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultFilterExpr.java,v 1.14 2005/03/21 22:39:16 elharo Exp $
3		* $Revision: 1.14 $
4		* $Date: 2005/03/21 22:39:16 $
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: DefaultFilterExpr.java,v 1.14 2005/03/21 22:39:16 elharo Exp $
60		*/
61
62
63
64		package org.jaxen.expr;
65
66		import java.util.ArrayList;
67		import java.util.List;
68		import org.jaxen.Context;
69		import org.jaxen.JaxenException;
70
71		public class DefaultFilterExpr extends DefaultExpr implements FilterExpr, Predicated
72		{
73		private Expr expr;
74		private PredicateSet predicates;
75
76		public DefaultFilterExpr(PredicateSet predicateSet)
77	5	{
78	5	this.predicates = predicateSet;
79	5	}
80
81		public DefaultFilterExpr(Expr expr, PredicateSet predicateSet)
82	1941	{
83	1941	this.expr = expr;
84	1941	this.predicates = predicateSet;
85	1941	}
86
87		public void addPredicate(Predicate predicate)
88		{
89	5	this.predicates.addPredicate( predicate );
90	5	}
91
92		public List getPredicates()
93		{
94	0	return this.predicates.getPredicates();
95		}
96
97		public PredicateSet getPredicateSet()
98		{
99	0	return this.predicates;
100		}
101
102		public Expr getExpr()
103		{
104	1933	return this.expr;
105		}
106
107		public String toString()
108		{
109	5	return "[(DefaultFilterExpr): expr: " + expr + " predicates: " + predicates + " ]";
110		}
111
112		public String getText()
113		{
114	4	String text = "";
115	4	if ( this.expr != null )
116		{
117	0	text = this.expr.getText();
118		}
119	4	text += predicates.getText();
120	4	return text;
121		}
122
123		public Expr simplify()
124		{
125	1933	this.predicates.simplify();
126
127	1933	if ( this.expr != null )
128		{
129	1933	this.expr = this.expr.simplify();
130		}
131
132	1933	if ( this.predicates.getPredicates().size() == 0 )
133		{
134	1933	return getExpr();
135		}
136
137	0	return this;
138		}
139
140		/** Returns true if the current filter matches at least one of the context nodes
141		*/
142		public boolean asBoolean(Context context) throws JaxenException
143		{
144	0	Object results = null;
145	0	if ( expr != null )
146		{
147	0	results = expr.evaluate( context );
148		}
149		else
150		{
151	0	List nodeSet = context.getNodeSet();
152	0	ArrayList list = new ArrayList(nodeSet.size());
153	0	list.addAll( nodeSet );
154	0	results = list;
155		}
156
157	0	if ( results instanceof Boolean )
158		{
159	0	Boolean b = (Boolean) results;
160	0	return b.booleanValue();
161		}
162	0	if ( results instanceof List )
163		{
164	0	return getPredicateSet().evaluateAsBoolean(
165		(List) results, context.getContextSupport()
166		);
167		}
168
169	0	return false;
170		}
171
172		public Object evaluate(Context context) throws JaxenException
173		{
174	0	Object results = getExpr().evaluate( context );
175
176	0	if ( results instanceof List )
177		{
178	0	List newresults = getPredicateSet().evaluatePredicates( (List) results,
179		context.getContextSupport() );
180	0	results = newresults;
181		}
182
183	0	return results;
184		}
185		public void accept(Visitor visitor)
186		{
187	0	visitor.visit(this);
188	0	}
189		}