Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
DefaultEqualityExpr |
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| 4.0;4 |
1 | /* |
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2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultEqualityExpr.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: DefaultEqualityExpr.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.BooleanFunction; |
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72 | import org.jaxen.function.NumberFunction; |
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73 | import org.jaxen.function.StringFunction; |
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74 | ||
75 | abstract class DefaultEqualityExpr extends DefaultTruthExpr implements EqualityExpr |
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76 | { |
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77 | DefaultEqualityExpr( Expr lhs, Expr rhs ) |
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78 | { |
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79 | 1902 | super( lhs, rhs ); |
80 | 1902 | } |
81 | ||
82 | public String toString() |
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83 | { |
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84 | 0 | return "[(DefaultEqualityExpr): " + getLHS() + ", " + getRHS() + "]"; |
85 | } |
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86 | ||
87 | public Object evaluate( Context context ) throws JaxenException |
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88 | { |
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89 | 17442 | Object lhsValue = getLHS().evaluate( context ); |
90 | 17442 | Object rhsValue = getRHS().evaluate( context ); |
91 | ||
92 | 17430 | if( lhsValue == null || rhsValue == null ) |
93 | { |
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94 | 0 | return Boolean.FALSE; |
95 | } |
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96 | ||
97 | 17430 | Navigator nav = context.getNavigator(); |
98 | ||
99 | 17430 | if( bothAreSets( lhsValue, rhsValue ) ) |
100 | { |
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101 | 66 | return evaluateSetSet( (List) lhsValue, (List) rhsValue, nav ); |
102 | } |
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103 | 17364 | else if ( eitherIsSet( lhsValue, rhsValue ) ) |
104 | { |
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105 | 10926 | if ( isSet( lhsValue ) ) |
106 | { |
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107 | 10758 | return evaluateSetSet( (List) lhsValue, convertToList( rhsValue ), nav ); |
108 | } |
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109 | else |
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110 | { |
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111 | 168 | return evaluateSetSet( convertToList( lhsValue ), (List) rhsValue, nav ); |
112 | } |
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113 | } |
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114 | else |
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115 | { |
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116 | 6438 | return evaluateObjectObject( lhsValue, rhsValue, nav ) ? Boolean.TRUE : Boolean.FALSE; |
117 | } |
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118 | } |
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119 | ||
120 | private Boolean evaluateSetSet( List lhsSet, List rhsSet, Navigator nav ) |
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121 | { |
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122 | 10992 | if( setIsEmpty( lhsSet ) || setIsEmpty( rhsSet ) ) |
123 | { |
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124 | 5340 | return Boolean.FALSE; |
125 | } |
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126 | ||
127 | 5652 | for( Iterator lhsIterator = lhsSet.iterator(); lhsIterator.hasNext(); ) |
128 | { |
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129 | 6108 | Object lhs = lhsIterator.next(); |
130 | ||
131 | 6108 | for( Iterator rhsIterator = rhsSet.iterator(); rhsIterator.hasNext(); ) |
132 | { |
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133 | 6108 | Object rhs = rhsIterator.next(); |
134 | ||
135 | 6108 | if( evaluateObjectObject( lhs, rhs, nav ) ) |
136 | { |
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137 | 1116 | return Boolean.TRUE; |
138 | } |
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139 | } |
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140 | } |
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141 | ||
142 | 4536 | return Boolean.FALSE; |
143 | } |
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144 | ||
145 | private boolean evaluateObjectObject( Object lhs, Object rhs, Navigator nav ) |
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146 | { |
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147 | 12546 | if( eitherIsBoolean( lhs, rhs ) ) |
148 | { |
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149 | 192 | return evaluateObjectObject( BooleanFunction.evaluate( lhs, nav ), |
150 | BooleanFunction.evaluate( rhs, nav ) ); |
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151 | } |
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152 | 12354 | else if( eitherIsNumber( lhs, rhs ) ) |
153 | { |
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154 | 666 | return evaluateObjectObject( NumberFunction.evaluate( lhs, |
155 | nav ), |
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156 | NumberFunction.evaluate( rhs, |
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157 | nav ) ); |
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158 | } |
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159 | else |
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160 | { |
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161 | 11688 | return evaluateObjectObject( StringFunction.evaluate( lhs, |
162 | nav ), |
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163 | StringFunction.evaluate( rhs, |
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164 | nav ) ); |
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165 | } |
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166 | } |
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167 | ||
168 | protected abstract boolean evaluateObjectObject( Object lhs, Object rhs ); |
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169 | } |