| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| DefaultLocationPath |
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| 1.8888888888888888;1.889 |
| 1 | /* |
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| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultLocationPath.java,v 1.27 2005/06/28 13:44:44 elharo Exp $ |
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| 3 | * $Revision: 1.27 $ |
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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: DefaultLocationPath.java,v 1.27 2005/06/28 13:44:44 elharo Exp $ |
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| 60 | */ |
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| 61 | package org.jaxen.expr; |
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| 62 | ||
| 63 | import java.util.ArrayList; |
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| 64 | import java.util.Collections; |
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| 65 | import java.util.Iterator; |
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| 66 | import java.util.LinkedList; |
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| 67 | import java.util.List; |
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| 68 | ||
| 69 | import org.jaxen.Context; |
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| 70 | import org.jaxen.ContextSupport; |
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| 71 | import org.jaxen.JaxenException; |
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| 72 | ||
| 73 | abstract class DefaultLocationPath extends DefaultExpr implements LocationPath |
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| 74 | { |
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| 75 | private List steps; |
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| 76 | ||
| 77 | /** |
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| 78 | * Create a new empty location path. |
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| 79 | */ |
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| 80 | DefaultLocationPath() |
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| 81 | 9966 | { |
| 82 | 9966 | this.steps = new LinkedList(); |
| 83 | 9966 | } |
| 84 | ||
| 85 | public void addStep(Step step) |
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| 86 | { |
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| 87 | 15864 | getSteps().add(step); |
| 88 | 15864 | } |
| 89 | ||
| 90 | public List getSteps() |
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| 91 | { |
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| 92 | 68850 | return this.steps; |
| 93 | } |
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| 94 | ||
| 95 | public Expr simplify() |
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| 96 | { |
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| 97 | 9642 | Iterator stepIter = getSteps().iterator(); |
| 98 | 9642 | Step eachStep = null; |
| 99 | 25284 | while (stepIter.hasNext()) |
| 100 | { |
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| 101 | 15642 | eachStep = (Step) stepIter.next(); |
| 102 | 15642 | eachStep.simplify(); |
| 103 | } |
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| 104 | 9642 | return this; |
| 105 | } |
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| 106 | ||
| 107 | public String getText() |
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| 108 | { |
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| 109 | 36 | StringBuffer buf = new StringBuffer(); |
| 110 | 36 | Iterator stepIter = getSteps().iterator(); |
| 111 | 108 | while (stepIter.hasNext()) |
| 112 | { |
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| 113 | 72 | buf.append(((Step) stepIter.next()).getText()); |
| 114 | 72 | if (stepIter.hasNext()) |
| 115 | { |
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| 116 | 36 | buf.append("/"); |
| 117 | } |
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| 118 | } |
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| 119 | 36 | return buf.toString(); |
| 120 | } |
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| 121 | ||
| 122 | public String toString() |
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| 123 | { |
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| 124 | 6 | StringBuffer buf = new StringBuffer(); |
| 125 | 6 | Iterator stepIter = getSteps().iterator(); |
| 126 | 18 | while (stepIter.hasNext()) |
| 127 | { |
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| 128 | 12 | buf.append(stepIter.next().toString()); |
| 129 | 12 | if (stepIter.hasNext()) |
| 130 | { |
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| 131 | 6 | buf.append("/"); |
| 132 | } |
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| 133 | } |
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| 134 | 6 | return buf.toString(); |
| 135 | } |
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| 136 | ||
| 137 | public boolean isAbsolute() |
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| 138 | { |
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| 139 | 132 | return false; |
| 140 | } |
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| 141 | ||
| 142 | public Object evaluate(Context context) throws JaxenException |
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| 143 | { |
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| 144 | 21582 | List nodeSet = context.getNodeSet(); |
| 145 | 21582 | List contextNodeSet = new ArrayList(nodeSet.size()); |
| 146 | 21582 | contextNodeSet.addAll(nodeSet); |
| 147 | 21582 | ContextSupport support = context.getContextSupport(); |
| 148 | 21582 | Context stepContext = new Context(support); |
| 149 | 21582 | Iterator stepIter = getSteps().iterator(); |
| 150 | 50178 | while ( stepIter.hasNext() ) |
| 151 | { |
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| 152 | 28614 | Step eachStep = (Step) stepIter.next(); |
| 153 | 28614 | stepContext.setNodeSet(contextNodeSet); |
| 154 | 28614 | contextNodeSet = eachStep.evaluate(stepContext); |
| 155 | // now we need to reverse the list if this is a reverse axis |
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| 156 | 28596 | if (isReverseAxis(eachStep)) { |
| 157 | 660 | Collections.reverse(contextNodeSet); |
| 158 | } |
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| 159 | } |
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| 160 | ||
| 161 | 21564 | if (getSteps().size() > 1) { |
| 162 | 5472 | Collections.sort(contextNodeSet, new NodeComparator(support.getNavigator())); |
| 163 | } |
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| 164 | ||
| 165 | 21564 | return contextNodeSet; |
| 166 | } |
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| 167 | ||
| 168 | private boolean isReverseAxis(Step step) { |
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| 169 | ||
| 170 | 28596 | int axis = step.getAxis(); |
| 171 | 28596 | return axis == org.jaxen.saxpath.Axis.PRECEDING |
| 172 | || axis == org.jaxen.saxpath.Axis.PRECEDING_SIBLING |
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| 173 | || axis == org.jaxen.saxpath.Axis.ANCESTOR |
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| 174 | || axis == org.jaxen.saxpath.Axis.ANCESTOR_OR_SELF; |
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| 175 | } |
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| 176 | ||
| 177 | } |
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| 178 |