1 /* 2 * $Header: /cvsroot/jaxen/jaxen/src/java/main/org/jaxen/expr/DefaultStep.java,v 1.5 2002/04/26 17:17:34 jstrachan Exp $ 3 * $Revision: 1.5 $ 4 * $Date: 2002/04/26 17:17:34 $ 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: DefaultStep.java,v 1.5 2002/04/26 17:17:34 jstrachan Exp $ 60 */ 61 62 63 64 package org.jaxen.expr; 65 66 import org.jaxen.Context; 67 import org.jaxen.ContextSupport; 68 import org.jaxen.UnsupportedAxisException; 69 import org.jaxen.expr.iter.IterableAxis; 70 71 import org.jaxen.util.LinkedIterator; 72 73 import org.saxpath.Axis; 74 75 import java.util.Set; 76 import java.util.TreeSet; 77 import java.util.List; 78 import java.util.Iterator; 79 80 public abstract class DefaultStep implements Step 81 { 82 private IterableAxis axis; 83 private PredicateSet predicates; 84 DefaultStep(IterableAxis axis)85 public DefaultStep(IterableAxis axis) 86 { 87 this.axis = axis; 88 this.predicates = new PredicateSet(); 89 } 90 addPredicate(Predicate predicate)91 public void addPredicate(Predicate predicate) 92 { 93 this.predicates.addPredicate( predicate ); 94 } 95 getPredicates()96 public List getPredicates() 97 { 98 return this.predicates.getPredicates(); 99 } 100 getPredicateSet()101 public PredicateSet getPredicateSet() 102 { 103 return this.predicates; 104 } 105 getAxis()106 public int getAxis() 107 { 108 return this.axis.value(); 109 } 110 getIterableAxis()111 public IterableAxis getIterableAxis() 112 { 113 return this.axis; 114 } 115 getAxisName()116 public String getAxisName() 117 { 118 return Axis.lookup( getAxis() ); 119 } 120 getText()121 public String getText() 122 { 123 return this.predicates.getText(); 124 } 125 toString()126 public String toString() 127 { 128 return getIterableAxis() + " " + super.toString(); 129 } 130 simplify()131 public void simplify() 132 { 133 this.predicates.simplify(); 134 } 135 axisIterator(Object contextNode, ContextSupport support)136 public Iterator axisIterator(Object contextNode, 137 ContextSupport support) throws UnsupportedAxisException 138 { 139 return getIterableAxis().iterator( contextNode, 140 support ); 141 } 142 } 143