| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| DefaultRelationalExpr |
|
| 3.6666666666666665;3.667 |
| 1 | /* | |
| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultRelationalExpr.java,v 1.14 2006/02/05 21:47:40 elharo Exp $ | |
| 3 | * $Revision: 1.14 $ | |
| 4 | * $Date: 2006/02/05 21:47:40 $ | |
| 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: DefaultRelationalExpr.java,v 1.14 2006/02/05 21:47:40 elharo Exp $ | |
| 46 | */ | |
| 47 | ||
| 48 | ||
| 49 | ||
| 50 | package org.jaxen.expr; | |
| 51 | ||
| 52 | import java.util.Iterator; | |
| 53 | import java.util.List; | |
| 54 | import org.jaxen.Context; | |
| 55 | import org.jaxen.JaxenException; | |
| 56 | import org.jaxen.Navigator; | |
| 57 | import org.jaxen.function.NumberFunction; | |
| 58 | ||
| 59 | abstract class DefaultRelationalExpr extends DefaultTruthExpr implements RelationalExpr | |
| 60 | { | |
| 61 | DefaultRelationalExpr( Expr lhs, Expr rhs ) | |
| 62 | { | |
| 63 | 458 | super( lhs, rhs ); |
| 64 | 458 | } |
| 65 | ||
| 66 | public String toString() | |
| 67 | { | |
| 68 | 0 | return "[(DefaultRelationalExpr): " + getLHS() + ", " + getRHS() + "]"; |
| 69 | } | |
| 70 | ||
| 71 | public Object evaluate( Context context ) throws JaxenException | |
| 72 | { | |
| 73 | 468 | Object lhsValue = getLHS().evaluate( context ); |
| 74 | 468 | Object rhsValue = getRHS().evaluate( context ); |
| 75 | 468 | Navigator nav = context.getNavigator(); |
| 76 | ||
| 77 | 468 | if( bothAreSets( lhsValue, rhsValue ) ) |
| 78 | { | |
| 79 | 0 | return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav ); |
| 80 | } | |
| 81 | ||
| 82 | 468 | if( eitherIsSet( lhsValue, rhsValue ) ) |
| 83 | { | |
| 84 | 48 | if( isSet( lhsValue ) ) |
| 85 | { | |
| 86 | 0 | return evaluateSetSet( (List) lhsValue, convertToList( rhsValue ), nav ); |
| 87 | } | |
| 88 | else | |
| 89 | { | |
| 90 | 48 | return evaluateSetSet( convertToList( lhsValue ), (List) rhsValue, nav ); |
| 91 | } | |
| 92 | } | |
| 93 | ||
| 94 | 420 | return evaluateObjectObject( lhsValue, rhsValue, nav ) ? Boolean.TRUE : Boolean.FALSE; |
| 95 | } | |
| 96 | ||
| 97 | private Object evaluateSetSet( List lhsSet, List rhsSet, Navigator nav ) | |
| 98 | { | |
| 99 | 48 | if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) // return false if either is null or empty |
| 100 | { | |
| 101 | 0 | return Boolean.FALSE; |
| 102 | } | |
| 103 | ||
| 104 | 48 | for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); ) |
| 105 | { | |
| 106 | 48 | Object lhs = lhsIterator.next(); |
| 107 | ||
| 108 | 48 | for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); ) |
| 109 | { | |
| 110 | 240 | Object rhs = rhsIterator.next(); |
| 111 | ||
| 112 | 240 | if( evaluateObjectObject( lhs, rhs, nav ) ) |
| 113 | { | |
| 114 | 32 | return Boolean.TRUE; |
| 115 | } | |
| 116 | 208 | } |
| 117 | 16 | } |
| 118 | ||
| 119 | 16 | return Boolean.FALSE; |
| 120 | } | |
| 121 | ||
| 122 | private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav ) | |
| 123 | { | |
| 124 | 660 | if( lhs == null || rhs == null ) |
| 125 | { | |
| 126 | 0 | return false; |
| 127 | } | |
| 128 | ||
| 129 | 660 | Double lhsNum = NumberFunction.evaluate( lhs, nav ); |
| 130 | 660 | Double rhsNum = NumberFunction.evaluate( rhs, nav ); |
| 131 | ||
| 132 | 660 | if( NumberFunction.isNaN( lhsNum ) || NumberFunction.isNaN( rhsNum ) ) |
| 133 | { | |
| 134 | 0 | return false; |
| 135 | } | |
| 136 | ||
| 137 | 660 | return evaluateDoubleDouble( lhsNum, rhsNum ); |
| 138 | } | |
| 139 | ||
| 140 | protected abstract boolean evaluateDoubleDouble( Double lhs, Double rhs ); | |
| 141 | } | |
| 142 |