| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| XPathExpr |
|
| 1.0;1 |
| 1 | /* | |
| 2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/XPathExpr.java,v 1.9 2007/05/02 15:04:46 elharo Exp $ | |
| 3 | * $Revision: 1.9 $ | |
| 4 | * $Date: 2007/05/02 15:04:46 $ | |
| 5 | * | |
| 6 | * ==================================================================== | |
| 7 | * | |
| 8 | * Copyright 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 are | |
| 13 | * met: | |
| 14 | * | |
| 15 | * * Redistributions of source code must retain the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer. | |
| 17 | * | |
| 18 | * * Redistributions in binary form must reproduce the above copyright | |
| 19 | * notice, this list of conditions and the following disclaimer in the | |
| 20 | * documentation and/or other materials provided with the distribution. | |
| 21 | * | |
| 22 | * * Neither the name of the Jaxen Project nor the names of its | |
| 23 | * contributors may be used to endorse or promote products derived | |
| 24 | * from this software without specific prior written permission. | |
| 25 | * | |
| 26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
| 27 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
| 28 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
| 29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
| 30 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 31 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 32 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 33 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 36 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 37 | * | |
| 38 | * ==================================================================== | |
| 39 | * This software consists of voluntary contributions made by many | |
| 40 | * individuals on behalf of the Jaxen Project and was originally | |
| 41 | * created by bob mcwhirter <bob@werken.com> and | |
| 42 | * James Strachan <jstrachan@apache.org>. For more information on the | |
| 43 | * Jaxen Project, please see <http://www.jaxen.org/>. | |
| 44 | * | |
| 45 | * $Id: XPathExpr.java,v 1.9 2007/05/02 15:04:46 elharo Exp $ | |
| 46 | */ | |
| 47 | ||
| 48 | ||
| 49 | ||
| 50 | package org.jaxen.expr; | |
| 51 | ||
| 52 | import java.io.Serializable; | |
| 53 | import java.util.List; | |
| 54 | ||
| 55 | import org.jaxen.Context; | |
| 56 | import org.jaxen.JaxenException; | |
| 57 | ||
| 58 | ||
| 59 | /** | |
| 60 | * A wrapper around an XPath expression. | |
| 61 | * | |
| 62 | */ | |
| 63 | public interface XPathExpr extends Serializable | |
| 64 | { | |
| 65 | ||
| 66 | /** | |
| 67 | * Returns the wrapped expression object. | |
| 68 | * | |
| 69 | * @return the wrapped Expr object | |
| 70 | */ | |
| 71 | Expr getRootExpr(); | |
| 72 | ||
| 73 | ||
| 74 | /** | |
| 75 | * Changes the wrapped expression object. | |
| 76 | * | |
| 77 | * @param rootExpr the new expression object to wrap | |
| 78 | */ | |
| 79 | void setRootExpr(Expr rootExpr); | |
| 80 | ||
| 81 | /** | |
| 82 | * Returns a String containing the XPath expression. | |
| 83 | * | |
| 84 | * @return the text form of this XPath expression | |
| 85 | */ | |
| 86 | String getText(); | |
| 87 | ||
| 88 | /** | |
| 89 | * Simplifies the XPath expression. For example, the expression | |
| 90 | * <code>//para[1 = 1]</code> could be simplified to | |
| 91 | * <code>//para</code>. In practice, this is usually a noop. | |
| 92 | * Jaxen does not currently perform any simplification. | |
| 93 | */ | |
| 94 | void simplify(); | |
| 95 | ||
| 96 | ||
| 97 | /** | |
| 98 | * Evaluates the expression and returns a list cintaing the resulting nodes, | |
| 99 | * or a singleton list containing a <code>Double</code>, <code>String</code>, | |
| 100 | * or <code>Boolean</code>. | |
| 101 | * | |
| 102 | * @param context the context in which to evaluate this expression | |
| 103 | * @return a list | |
| 104 | * @throws JaxenException | |
| 105 | */ | |
| 106 | List asList(Context context) throws JaxenException; | |
| 107 | ||
| 108 | } |