| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| DefaultRelationalExpr |
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| 3.6666666666666665;3.667 |
| 1 | /* |
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| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultRelationalExpr.java,v 1.13 2005/06/28 13:44:44 elharo Exp $ |
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| 3 | * $Revision: 1.13 $ |
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| 4 | * $Date: 2005/06/28 13:44:44 $ |
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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: DefaultRelationalExpr.java,v 1.13 2005/06/28 13:44:44 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.Iterator; |
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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 | import org.jaxen.Navigator; |
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| 71 | import org.jaxen.function.NumberFunction; |
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| 72 | ||
| 73 | abstract class DefaultRelationalExpr extends DefaultTruthExpr implements RelationalExpr |
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| 74 | { |
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| 75 | DefaultRelationalExpr( Expr lhs, Expr rhs ) |
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| 76 | { |
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| 77 | 600 | super( lhs, rhs ); |
| 78 | 600 | } |
| 79 | ||
| 80 | public String toString() |
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| 81 | { |
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| 82 | 0 | return "[(DefaultRelationalExpr): " + getLHS() + ", " + getRHS() + "]"; |
| 83 | } |
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| 84 | ||
| 85 | public Object evaluate( Context context ) throws JaxenException |
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| 86 | { |
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| 87 | 1182 | Object lhsValue = getLHS().evaluate( context ); |
| 88 | 1182 | Object rhsValue = getRHS().evaluate( context ); |
| 89 | 1182 | Navigator nav = context.getNavigator(); |
| 90 | ||
| 91 | 1182 | if( bothAreSets( lhsValue, rhsValue ) ) |
| 92 | { |
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| 93 | 0 | return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav ); |
| 94 | } |
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| 95 | ||
| 96 | 1182 | if( eitherIsSet( lhsValue, rhsValue ) ) |
| 97 | { |
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| 98 | 144 | if( isSet( lhsValue ) ) |
| 99 | { |
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| 100 | 0 | return evaluateSetSet( (List) lhsValue, convertToList( rhsValue ), nav ); |
| 101 | } |
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| 102 | else |
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| 103 | { |
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| 104 | 144 | return evaluateSetSet( convertToList( lhsValue ), (List) rhsValue, nav ); |
| 105 | } |
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| 106 | } |
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| 107 | ||
| 108 | 1038 | return evaluateObjectObject( lhsValue, rhsValue, nav ) ? Boolean.TRUE : Boolean.FALSE; |
| 109 | } |
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| 110 | ||
| 111 | private Object evaluateSetSet( List lhsSet, List rhsSet, Navigator nav ) |
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| 112 | { |
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| 113 | 144 | if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) // return false if either is null or empty |
| 114 | { |
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| 115 | 0 | return Boolean.FALSE; |
| 116 | } |
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| 117 | ||
| 118 | 144 | for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); ) |
| 119 | { |
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| 120 | 144 | Object lhs = lhsIterator.next(); |
| 121 | ||
| 122 | 144 | for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); ) |
| 123 | { |
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| 124 | 720 | Object rhs = rhsIterator.next(); |
| 125 | ||
| 126 | 720 | if( evaluateObjectObject( lhs, rhs, nav ) ) |
| 127 | { |
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| 128 | 96 | return Boolean.TRUE; |
| 129 | } |
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| 130 | } |
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| 131 | } |
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| 132 | ||
| 133 | 48 | return Boolean.FALSE; |
| 134 | } |
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| 135 | ||
| 136 | private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav ) |
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| 137 | { |
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| 138 | 1758 | if( lhs == null || rhs == null ) |
| 139 | { |
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| 140 | 0 | return false; |
| 141 | } |
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| 142 | ||
| 143 | 1758 | Double lhsNum = NumberFunction.evaluate( lhs, nav ); |
| 144 | 1758 | Double rhsNum = NumberFunction.evaluate( rhs, nav ); |
| 145 | ||
| 146 | 1758 | if( NumberFunction.isNaN( lhsNum ) || NumberFunction.isNaN( rhsNum ) ) |
| 147 | { |
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| 148 | 0 | return false; |
| 149 | } |
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| 150 | ||
| 151 | 1758 | return evaluateDoubleDouble( lhsNum, rhsNum ); |
| 152 | } |
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| 153 | ||
| 154 | protected abstract boolean evaluateDoubleDouble( Double lhs, Double rhs ); |
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| 155 | } |
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| 156 |