| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| DefaultUnionExpr |
|
| 2.0;2 |
| 1 | /* |
|
| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultUnionExpr.java,v 1.14 2005/09/06 13:41:01 elharo Exp $ |
|
| 3 | * $Revision: 1.14 $ |
|
| 4 | * $Date: 2005/09/06 13:41:01 $ |
|
| 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: DefaultUnionExpr.java,v 1.14 2005/09/06 13:41:01 elharo Exp $ |
|
| 60 | */ |
|
| 61 | ||
| 62 | ||
| 63 | ||
| 64 | package org.jaxen.expr; |
|
| 65 | ||
| 66 | import java.util.ArrayList; |
|
| 67 | import java.util.Collections; |
|
| 68 | import java.util.HashSet; |
|
| 69 | import java.util.Iterator; |
|
| 70 | import java.util.List; |
|
| 71 | import java.util.Set; |
|
| 72 | import org.jaxen.Context; |
|
| 73 | import org.jaxen.JaxenException; |
|
| 74 | import org.jaxen.XPathSyntaxException; |
|
| 75 | ||
| 76 | /** |
|
| 77 | * @deprecated this class will become non-public in the future; |
|
| 78 | * use the interface instead |
|
| 79 | */ |
|
| 80 | public class DefaultUnionExpr extends DefaultBinaryExpr implements UnionExpr |
|
| 81 | { |
|
| 82 | public DefaultUnionExpr(Expr lhs, |
|
| 83 | Expr rhs) |
|
| 84 | { |
|
| 85 | 120 | super( lhs, |
| 86 | rhs ); |
|
| 87 | 120 | } |
| 88 | ||
| 89 | public String getOperator() |
|
| 90 | { |
|
| 91 | 36 | return "|"; |
| 92 | } |
|
| 93 | ||
| 94 | public String toString() |
|
| 95 | { |
|
| 96 | 0 | return "[(DefaultUnionExpr): " + getLHS() + ", " + getRHS() + "]"; |
| 97 | } |
|
| 98 | ||
| 99 | public Object evaluate(Context context) throws JaxenException |
|
| 100 | { |
|
| 101 | 90 | List results = new ArrayList(); |
| 102 | ||
| 103 | try { |
|
| 104 | 90 | List lhsResults = (List) getLHS().evaluate( context ); |
| 105 | 60 | List rhsResults = (List) getRHS().evaluate( context ); |
| 106 | ||
| 107 | 54 | Set unique = new HashSet(); |
| 108 | ||
| 109 | 54 | results.addAll( lhsResults ); |
| 110 | 54 | unique.addAll( lhsResults ); |
| 111 | ||
| 112 | 54 | Iterator rhsIter = rhsResults.iterator(); |
| 113 | ||
| 114 | 168 | while ( rhsIter.hasNext() ) |
| 115 | { |
|
| 116 | 114 | Object each = rhsIter.next(); |
| 117 | ||
| 118 | 114 | if ( ! unique.contains( each ) ) |
| 119 | { |
|
| 120 | 84 | results.add( each ); |
| 121 | 84 | unique.add( each ); |
| 122 | } |
|
| 123 | } |
|
| 124 | ||
| 125 | 54 | Collections.sort(results, new NodeComparator(context.getNavigator())); |
| 126 | ||
| 127 | 54 | return results; |
| 128 | } |
|
| 129 | 36 | catch (ClassCastException e) { |
| 130 | 36 | throw new XPathSyntaxException(this.getText(), context.getPosition(), "Unions are only allowed over node-sets"); |
| 131 | } |
|
| 132 | } |
|
| 133 | ||
| 134 | public void accept(Visitor visitor) |
|
| 135 | { |
|
| 136 | 0 | visitor.visit(this); |
| 137 | 0 | } |
| 138 | ||
| 139 | } |
|
| 140 |