| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| DefaultStep |
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| 1.3333333333333333;1.333 |
| 1 | /* |
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| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultStep.java,v 1.20 2005/09/06 13:41:01 elharo Exp $ |
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| 3 | * $Revision: 1.20 $ |
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| 4 | * $Date: 2005/09/06 13:41:01 $ |
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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: DefaultStep.java,v 1.20 2005/09/06 13:41:01 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.Iterator; |
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| 65 | import java.util.List; |
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| 66 | ||
| 67 | import org.jaxen.Context; |
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| 68 | import org.jaxen.ContextSupport; |
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| 69 | import org.jaxen.JaxenException; |
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| 70 | import org.jaxen.UnsupportedAxisException; |
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| 71 | import org.jaxen.expr.iter.IterableAxis; |
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| 72 | import org.jaxen.saxpath.Axis; |
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| 73 | ||
| 74 | /** |
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| 75 | * @deprecated this class will become non-public in the future; |
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| 76 | * use the interface instead |
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| 77 | */ |
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| 78 | public abstract class DefaultStep implements Step |
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| 79 | { |
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| 80 | private IterableAxis axis; |
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| 81 | private PredicateSet predicates; |
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| 82 | ||
| 83 | public DefaultStep(IterableAxis axis, PredicateSet predicates) |
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| 84 | 16026 | { |
| 85 | 16026 | this.axis = axis; |
| 86 | 16026 | this.predicates = predicates; |
| 87 | 16026 | } |
| 88 | ||
| 89 | public void addPredicate(Predicate predicate) |
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| 90 | { |
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| 91 | 2310 | this.predicates.addPredicate(predicate); |
| 92 | 2310 | } |
| 93 | ||
| 94 | public List getPredicates() |
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| 95 | { |
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| 96 | 192 | return this.predicates.getPredicates(); |
| 97 | } |
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| 98 | ||
| 99 | public PredicateSet getPredicateSet() |
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| 100 | { |
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| 101 | 54282 | return this.predicates; |
| 102 | } |
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| 103 | ||
| 104 | public int getAxis() |
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| 105 | { |
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| 106 | 37092 | return this.axis.value(); |
| 107 | } |
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| 108 | ||
| 109 | public IterableAxis getIterableAxis() |
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| 110 | { |
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| 111 | 103860 | return this.axis; |
| 112 | } |
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| 113 | ||
| 114 | public String getAxisName() |
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| 115 | { |
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| 116 | 72 | return Axis.lookup(getAxis()); |
| 117 | } |
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| 118 | ||
| 119 | public String getText() |
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| 120 | { |
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| 121 | 72 | return this.predicates.getText(); |
| 122 | } |
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| 123 | ||
| 124 | public String toString() |
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| 125 | { |
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| 126 | 0 | return getIterableAxis() + " " + super.toString(); |
| 127 | } |
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| 128 | ||
| 129 | public void simplify() |
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| 130 | { |
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| 131 | 15642 | this.predicates.simplify(); |
| 132 | 15642 | } |
| 133 | ||
| 134 | public Iterator axisIterator(Object contextNode, ContextSupport support) |
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| 135 | throws UnsupportedAxisException |
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| 136 | { |
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| 137 | 78330 | return getIterableAxis().iterator(contextNode, support); |
| 138 | } |
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| 139 | ||
| 140 | public List evaluate(final Context context) throws JaxenException |
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| 141 | { |
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| 142 | 2958 | final List contextNodeSet = context.getNodeSet(); |
| 143 | 2958 | final IdentitySet unique = new IdentitySet(); |
| 144 | 2958 | final int contextSize = contextNodeSet.size(); |
| 145 | ||
| 146 | // ???? try linked lists instead? |
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| 147 | // ???? initial size for these? |
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| 148 | 2958 | final ArrayList interimSet = new ArrayList(); |
| 149 | 2958 | final ArrayList newNodeSet = new ArrayList(); |
| 150 | 2958 | final ContextSupport support = context.getContextSupport(); |
| 151 | ||
| 152 | // ???? use iterator instead |
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| 153 | 10452 | for ( int i = 0 ; i < contextSize ; ++i ) |
| 154 | { |
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| 155 | 7500 | Object eachContextNode = contextNodeSet.get( i ); |
| 156 | ||
| 157 | ||
| 158 | /* See jaxen-106. Might be able to optimize this by doing |
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| 159 | * specific matching for individual axes. For instance on namespace axis |
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| 160 | * we should only get namespace nodes and on attribute axes we only get |
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| 161 | * attribute nodes. Self and parent axes have single members. |
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| 162 | * Children, descendant, ancestor, and sibling axes never |
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| 163 | * see any attributes or namespaces |
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| 164 | */ |
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| 165 | 7500 | Iterator axisNodeIter = axis.iterator(eachContextNode, support); |
| 166 | 122322 | while ( axisNodeIter.hasNext() ) |
| 167 | { |
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| 168 | 114828 | Object eachAxisNode = axisNodeIter.next(); |
| 169 | 114828 | if ( ! unique.contains( eachAxisNode ) ) |
| 170 | { |
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| 171 | 114780 | if ( matches( eachAxisNode, support ) ) |
| 172 | { |
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| 173 | 109692 | unique.add( eachAxisNode ); |
| 174 | 109692 | interimSet.add( eachAxisNode ); |
| 175 | } |
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| 176 | } |
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| 177 | } |
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| 178 | 7494 | newNodeSet.addAll(getPredicateSet().evaluatePredicates( |
| 179 | interimSet, support )); |
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| 180 | 7494 | interimSet.clear(); |
| 181 | } |
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| 182 | 2952 | return newNodeSet; |
| 183 | } |
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| 184 | ||
| 185 | } |