| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| DefaultFilterExpr |
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| 1.8333333333333333;1.833 |
| 1 | /* |
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| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultFilterExpr.java,v 1.16 2005/09/06 13:41:00 elharo Exp $ |
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| 3 | * $Revision: 1.16 $ |
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| 4 | * $Date: 2005/09/06 13:41:00 $ |
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| 5 | * |
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| 6 | * ==================================================================== |
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| 7 | * |
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| 8 | * Copyright (C) 2000-2002 bob mcwhirter & James Strachan. |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * |
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| 15 | * 1. Redistributions of source code must retain the above copyright |
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| 16 | * notice, this list of conditions, and the following disclaimer. |
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| 17 | * |
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| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 19 | * notice, this list of conditions, and the disclaimer that follows |
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| 20 | * these conditions in the documentation and/or other materials |
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| 21 | * provided with the distribution. |
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| 22 | * |
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| 23 | * 3. The name "Jaxen" must not be used to endorse or promote products |
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| 24 | * derived from this software without prior written permission. For |
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| 25 | * written permission, please contact license@jaxen.org. |
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| 26 | * |
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| 27 | * 4. Products derived from this software may not be called "Jaxen", nor |
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| 28 | * may "Jaxen" appear in their name, without prior written permission |
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| 29 | * from the Jaxen Project Management (pm@jaxen.org). |
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| 30 | * |
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| 31 | * In addition, we request (but do not require) that you include in the |
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| 32 | * end-user documentation provided with the redistribution and/or in the |
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| 33 | * software itself an acknowledgement equivalent to the following: |
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| 34 | * "This product includes software developed by the |
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| 35 | * Jaxen Project <http://www.jaxen.org/>." |
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| 36 | * Alternatively, the acknowledgment may be graphical using the logos |
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| 37 | * available at http://www.jaxen.org/ |
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| 38 | * |
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| 39 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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| 40 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 41 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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| 42 | * DISCLAIMED. IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT |
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| 43 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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| 45 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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| 46 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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| 47 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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| 48 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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| 49 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 50 | * SUCH DAMAGE. |
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| 51 | * |
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| 52 | * ==================================================================== |
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| 53 | * This software consists of voluntary contributions made by many |
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| 54 | * individuals on behalf of the Jaxen Project and was originally |
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| 55 | * created by bob mcwhirter <bob@werken.com> and |
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| 56 | * James Strachan <jstrachan@apache.org>. For more information on the |
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| 57 | * Jaxen Project, please see <http://www.jaxen.org/>. |
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| 58 | * |
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| 59 | * $Id: DefaultFilterExpr.java,v 1.16 2005/09/06 13:41:00 elharo Exp $ |
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| 60 | */ |
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| 61 | ||
| 62 | ||
| 63 | ||
| 64 | package org.jaxen.expr; |
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| 65 | ||
| 66 | import java.util.ArrayList; |
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| 67 | import java.util.List; |
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| 68 | import org.jaxen.Context; |
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| 69 | import org.jaxen.JaxenException; |
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| 70 | ||
| 71 | /** |
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| 72 | * @deprecated this class will become non-public in the future; |
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| 73 | * use the interface instead |
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| 74 | */ |
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| 75 | public class DefaultFilterExpr extends DefaultExpr implements FilterExpr, Predicated |
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| 76 | { |
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| 77 | private Expr expr; |
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| 78 | private PredicateSet predicates; |
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| 79 | ||
| 80 | public DefaultFilterExpr(PredicateSet predicateSet) |
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| 81 | 30 | { |
| 82 | 30 | this.predicates = predicateSet; |
| 83 | 30 | } |
| 84 | ||
| 85 | public DefaultFilterExpr(Expr expr, PredicateSet predicateSet) |
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| 86 | 13446 | { |
| 87 | 13446 | this.expr = expr; |
| 88 | 13446 | this.predicates = predicateSet; |
| 89 | 13446 | } |
| 90 | ||
| 91 | public void addPredicate(Predicate predicate) |
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| 92 | { |
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| 93 | 36 | this.predicates.addPredicate( predicate ); |
| 94 | 36 | } |
| 95 | ||
| 96 | public List getPredicates() |
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| 97 | { |
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| 98 | 0 | return this.predicates.getPredicates(); |
| 99 | } |
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| 100 | ||
| 101 | public PredicateSet getPredicateSet() |
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| 102 | { |
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| 103 | 6 | return this.predicates; |
| 104 | } |
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| 105 | ||
| 106 | public Expr getExpr() |
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| 107 | { |
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| 108 | 13368 | return this.expr; |
| 109 | } |
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| 110 | ||
| 111 | public String toString() |
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| 112 | { |
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| 113 | 0 | return "[(DefaultFilterExpr): expr: " + expr + " predicates: " + predicates + " ]"; |
| 114 | } |
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| 115 | ||
| 116 | public String getText() |
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| 117 | { |
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| 118 | 0 | String text = ""; |
| 119 | 0 | if ( this.expr != null ) |
| 120 | { |
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| 121 | 0 | text = this.expr.getText(); |
| 122 | } |
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| 123 | 0 | text += predicates.getText(); |
| 124 | 0 | return text; |
| 125 | } |
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| 126 | ||
| 127 | public Expr simplify() |
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| 128 | { |
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| 129 | 13368 | this.predicates.simplify(); |
| 130 | ||
| 131 | 13368 | if ( this.expr != null ) |
| 132 | { |
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| 133 | 13368 | this.expr = this.expr.simplify(); |
| 134 | } |
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| 135 | ||
| 136 | 13368 | if ( this.predicates.getPredicates().size() == 0 ) |
| 137 | { |
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| 138 | 13362 | return getExpr(); |
| 139 | } |
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| 140 | ||
| 141 | 6 | return this; |
| 142 | } |
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| 143 | ||
| 144 | /** Returns true if the current filter matches at least one of the context nodes |
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| 145 | */ |
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| 146 | public boolean asBoolean(Context context) throws JaxenException |
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| 147 | { |
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| 148 | 0 | Object results = null; |
| 149 | 0 | if ( expr != null ) |
| 150 | { |
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| 151 | 0 | results = expr.evaluate( context ); |
| 152 | } |
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| 153 | else |
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| 154 | { |
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| 155 | 0 | List nodeSet = context.getNodeSet(); |
| 156 | 0 | ArrayList list = new ArrayList(nodeSet.size()); |
| 157 | 0 | list.addAll( nodeSet ); |
| 158 | 0 | results = list; |
| 159 | } |
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| 160 | ||
| 161 | 0 | if ( results instanceof Boolean ) |
| 162 | { |
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| 163 | 0 | Boolean b = (Boolean) results; |
| 164 | 0 | return b.booleanValue(); |
| 165 | } |
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| 166 | 0 | if ( results instanceof List ) |
| 167 | { |
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| 168 | 0 | return getPredicateSet().evaluateAsBoolean( |
| 169 | (List) results, context.getContextSupport() |
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| 170 | ); |
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| 171 | } |
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| 172 | ||
| 173 | 0 | return false; |
| 174 | } |
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| 175 | ||
| 176 | public Object evaluate(Context context) throws JaxenException |
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| 177 | { |
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| 178 | 6 | Object results = getExpr().evaluate( context ); |
| 179 | ||
| 180 | 6 | if ( results instanceof List ) |
| 181 | { |
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| 182 | 6 | List newresults = getPredicateSet().evaluatePredicates( (List) results, |
| 183 | context.getContextSupport() ); |
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| 184 | 6 | results = newresults; |
| 185 | } |
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| 186 | ||
| 187 | 6 | return results; |
| 188 | } |
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| 189 | public void accept(Visitor visitor) |
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| 190 | { |
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| 191 | 0 | visitor.visit(this); |
| 192 | 0 | } |
| 193 | } |