Coverage Report - org.jaxen.expr.DefaultFilterExpr

Classes in this File Line Coverage Branch Coverage Complexity
DefaultFilterExpr
50% 
43% 
1.833

 1  
 /*
 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 $
 3  
  * $Revision: 1.16 $
 4  
  * $Date: 2005/09/06 13:41:00 $
 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 1.16 2005/09/06 13:41:00 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  
 /**
 72  
  * @deprecated this class will become non-public in the future;
 73  
  *     use the interface instead
 74  
  */
 75  
 public class DefaultFilterExpr extends DefaultExpr implements FilterExpr, Predicated
 76  
 {
 77  
     private Expr expr;
 78  
     private PredicateSet predicates;
 79  
 
 80  
     public DefaultFilterExpr(PredicateSet predicateSet)
 81  30
     {
 82  30
         this.predicates = predicateSet;
 83  30
     }
 84  
 
 85  
     public DefaultFilterExpr(Expr expr, PredicateSet predicateSet)
 86  13446
     {
 87  13446
         this.expr       = expr;
 88  13446
         this.predicates = predicateSet;
 89  13446
     }
 90  
 
 91  
     public void addPredicate(Predicate predicate)
 92  
     {
 93  36
         this.predicates.addPredicate( predicate );
 94  36
     }
 95  
 
 96  
     public List getPredicates()
 97  
     {
 98  0
         return this.predicates.getPredicates();
 99  
     }
 100  
 
 101  
     public PredicateSet getPredicateSet()
 102  
     {
 103  6
         return this.predicates;
 104  
     }
 105  
 
 106  
     public Expr getExpr()
 107  
     {
 108  13368
         return this.expr;
 109  
     }
 110  
 
 111  
     public String toString()
 112  
     {
 113  0
         return "[(DefaultFilterExpr): expr: " + expr + " predicates: " + predicates + " ]";
 114  
     }
 115  
 
 116  
     public String getText()
 117  
     {
 118  0
         String text = "";
 119  0
         if ( this.expr != null )
 120  
         {
 121  0
             text = this.expr.getText();
 122  
         }
 123  0
         text += predicates.getText();
 124  0
         return text;
 125  
     }
 126  
 
 127  
     public Expr simplify()
 128  
     {
 129  13368
         this.predicates.simplify();
 130  
 
 131  13368
         if ( this.expr != null ) 
 132  
         {
 133  13368
             this.expr = this.expr.simplify();
 134  
         }
 135  
 
 136  13368
         if ( this.predicates.getPredicates().size() == 0 )
 137  
         {
 138  13362
             return getExpr();
 139  
         }
 140  
 
 141  6
         return this;
 142  
     }
 143  
 
 144  
     /** Returns true if the current filter matches at least one of the context nodes
 145  
      */
 146  
     public boolean asBoolean(Context context) throws JaxenException 
 147  
     {
 148  0
         Object results = null;
 149  0
         if ( expr != null ) 
 150  
         {
 151  0
             results = expr.evaluate( context );
 152  
         }
 153  
         else
 154  
         {
 155  0
             List nodeSet = context.getNodeSet();
 156  0
             ArrayList list = new ArrayList(nodeSet.size());
 157  0
             list.addAll( nodeSet );
 158  0
             results = list;
 159  
         }
 160  
         
 161  0
         if ( results instanceof Boolean ) 
 162  
         {
 163  0
             Boolean b = (Boolean) results;
 164  0
             return b.booleanValue();
 165  
         }
 166  0
         if ( results instanceof List )
 167  
         {
 168  0
             return getPredicateSet().evaluateAsBoolean( 
 169  
                 (List) results, context.getContextSupport() 
 170  
             );
 171  
         }
 172  
         
 173  0
         return false;
 174  
     }
 175  
     
 176  
     public Object evaluate(Context context) throws JaxenException
 177  
     {
 178  6
         Object results = getExpr().evaluate( context );
 179  
         
 180  6
         if ( results instanceof List )
 181  
         {
 182  6
             List newresults = getPredicateSet().evaluatePredicates( (List) results,
 183  
                                     context.getContextSupport() );
 184  6
         results = newresults;
 185  
         }
 186  
 
 187  6
         return results;
 188  
     }
 189  
     public void accept(Visitor visitor)
 190  
     {
 191  0
         visitor.visit(this);
 192  0
     }
 193  
 }