| Classes in this Package | Line Coverage | Branch Coverage | Complexity | ||||||||
| IdFunction |
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| 5.5;5.5 |
| 1 | /* |
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| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/function/IdFunction.java,v 1.6 2003/06/29 18:04:41 ssanders Exp $ |
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| 3 | * $Revision: 1.6 $ |
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| 4 | * $Date: 2003/06/29 18:04:41 $ |
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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: IdFunction.java,v 1.6 2003/06/29 18:04:41 ssanders Exp $ |
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| 60 | */ |
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| 61 | ||
| 62 | package org.jaxen.function; |
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| 63 | ||
| 64 | import java.util.ArrayList; |
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| 65 | import java.util.Collections; |
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| 66 | import java.util.Iterator; |
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| 67 | import java.util.List; |
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| 68 | import java.util.StringTokenizer; |
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| 69 | ||
| 70 | import org.jaxen.Context; |
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| 71 | import org.jaxen.Function; |
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| 72 | import org.jaxen.FunctionCallException; |
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| 73 | import org.jaxen.Navigator; |
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| 74 | ||
| 75 | /** |
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| 76 | * <p><b>4.1</b> <code><i>node-set</i> id(<i>object</i>)</code> |
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| 77 | * |
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| 78 | * @author Erwin Bolwidt (ejb @ klomp.org) |
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| 79 | * @author J\u00e9r\u00f4me N\u00e8gre (jerome.negre @ e-xmlmedia.fr) |
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| 80 | */ |
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| 81 | 41 | public class IdFunction implements Function |
| 82 | { |
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| 83 | ||
| 84 | public Object call (Context context, List args) throws FunctionCallException |
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| 85 | { |
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| 86 | 6 | if ( args.size() == 1 ) { |
| 87 | 4 | return evaluate( context.getNodeSet(), |
| 88 | args.get(0), context.getNavigator() ); |
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| 89 | } |
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| 90 | ||
| 91 | 2 | throw new FunctionCallException( "id() requires one argument" ); |
| 92 | } |
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| 93 | ||
| 94 | public static List evaluate (List contextNodes, Object arg, Navigator nav) |
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| 95 | { |
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| 96 | 4 | if (contextNodes.size() == 0) return Collections.EMPTY_LIST; |
| 97 | ||
| 98 | 4 | List nodes = new ArrayList(); |
| 99 | ||
| 100 | 4 | Object contextNode = contextNodes.get(0); |
| 101 | ||
| 102 | 4 | if (arg instanceof List) { |
| 103 | 0 | Iterator iter = ((List)arg).iterator(); |
| 104 | 0 | while (iter.hasNext()) { |
| 105 | 0 | String id = StringFunction.evaluate(iter.next(), nav); |
| 106 | 0 | nodes.addAll( evaluate( contextNodes, id, nav ) ); |
| 107 | } |
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| 108 | } else { |
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| 109 | 4 | String ids = StringFunction.evaluate(arg, nav); |
| 110 | 4 | StringTokenizer tok = new StringTokenizer(ids, " \t\n\r"); |
| 111 | 8 | while (tok.hasMoreTokens()) { |
| 112 | 4 | String id = tok.nextToken(); |
| 113 | 4 | Object node = nav.getElementById(contextNode, id); |
| 114 | 4 | if (node != null) { |
| 115 | 2 | nodes.add(node); |
| 116 | } |
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| 117 | } |
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| 118 | } |
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| 119 | 4 | return nodes; |
| 120 | } |
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| 121 | } |
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| 122 |