Coverage Report - org.jaxen.expr.DefaultFilterExpr
 
Classes in this File Line Coverage Branch Coverage Complexity
DefaultFilterExpr
51%
22/43
43%
3/7
1.909
 
 1  
 /*
 2  
  * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultFilterExpr.java,v 1.19 2006/11/30 18:49:26 elharo Exp $
 3  
  * $Revision: 1.19 $
 4  
  * $Date: 2006/11/30 18:49:26 $
 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: DefaultFilterExpr.java,v 1.19 2006/11/30 18:49:26 elharo Exp $
 46  
  */
 47  
 
 48  
 
 49  
 
 50  
 package org.jaxen.expr;
 51  
 
 52  
 import java.util.ArrayList;
 53  
 import java.util.List;
 54  
 import org.jaxen.Context;
 55  
 import org.jaxen.JaxenException;
 56  
 
 57  
 /**
 58  
  * @deprecated this class will become non-public in the future;
 59  
  *     use the interface instead
 60  
  */
 61  
 public class DefaultFilterExpr extends DefaultExpr implements FilterExpr, Predicated
 62  
 {
 63  
     /**
 64  
      * 
 65  
      */
 66  
     private static final long serialVersionUID = -549640659288005735L;
 67  
     private Expr expr;
 68  
     private PredicateSet predicates;
 69  
 
 70  
     public DefaultFilterExpr(PredicateSet predicateSet)
 71  10
     {
 72  10
         this.predicates = predicateSet;
 73  10
     }
 74  
 
 75  
     public DefaultFilterExpr(Expr expr, PredicateSet predicateSet)
 76  9460
     {
 77  9460
         this.expr       = expr;
 78  9460
         this.predicates = predicateSet;
 79  9460
     }
 80  
 
 81  
     public void addPredicate(Predicate predicate)
 82  
     {
 83  12
         this.predicates.addPredicate( predicate );
 84  12
     }
 85  
 
 86  
     public List getPredicates()
 87  
     {
 88  0
         return this.predicates.getPredicates();
 89  
     }
 90  
 
 91  
     public PredicateSet getPredicateSet()
 92  
     {
 93  2
         return this.predicates;
 94  
     }
 95  
 
 96  
     public Expr getExpr()
 97  
     {
 98  9434
         return this.expr;
 99  
     }
 100  
 
 101  
     public String toString()
 102  
     {
 103  0
         return "[(DefaultFilterExpr): expr: " + expr + " predicates: " + predicates + " ]";
 104  
     }
 105  
 
 106  
     public String getText()
 107  
     {
 108  0
         String text = "";
 109  0
         if ( this.expr != null )
 110  
         {
 111  0
             text = this.expr.getText();
 112  
         }
 113  0
         text += predicates.getText();
 114  0
         return text;
 115  
     }
 116  
 
 117  
     public Expr simplify()
 118  
     {
 119  9434
         this.predicates.simplify();
 120  
 
 121  9434
         if ( this.expr != null ) 
 122  
         {
 123  9434
             this.expr = this.expr.simplify();
 124  
         }
 125  
 
 126  9434
         if ( this.predicates.getPredicates().size() == 0 )
 127  
         {
 128  9432
             return getExpr();
 129  
         }
 130  
 
 131  2
         return this;
 132  
     }
 133  
 
 134  
     /** Returns true if the current filter matches at least one of the context nodes
 135  
      */
 136  
     public boolean asBoolean(Context context) throws JaxenException 
 137  
     {
 138  0
         Object results = null;
 139  0
         if ( expr != null ) 
 140  
         {
 141  0
             results = expr.evaluate( context );
 142  0
         }
 143  
         else
 144  
         {
 145  0
             List nodeSet = context.getNodeSet();
 146  0
             ArrayList list = new ArrayList(nodeSet.size());
 147  0
             list.addAll( nodeSet );
 148  0
             results = list;
 149  
         }
 150  
         
 151  0
         if ( results instanceof Boolean ) 
 152  
         {
 153  0
             Boolean b = (Boolean) results;
 154  0
             return b.booleanValue();
 155  
         }
 156  0
         if ( results instanceof List )
 157  
         {
 158  0
             return getPredicateSet().evaluateAsBoolean( 
 159  
                 (List) results, context.getContextSupport() 
 160  
             );
 161  
         }
 162  
         
 163  0
         return false;
 164  
     }
 165  
     
 166  
     public Object evaluate(Context context) throws JaxenException
 167  
     {
 168  2
         Object results = getExpr().evaluate( context );
 169  
         
 170  2
         if ( results instanceof List )
 171  
         {
 172  2
             List newresults = getPredicateSet().evaluatePredicates( (List) results,
 173  
                                     context.getContextSupport() );
 174  2
         results = newresults;
 175  
         }
 176  
 
 177  2
         return results;
 178  
     }
 179  
 
 180  
 }