00001 00002 // 00003 // XML storage classes version 1.5 00004 // 00005 // XPath.java 00006 // 00007 // Copyright (c) 2010 Martin Fuchs <martin-fuchs@gmx.net> 00008 // 00009 00010 00011 /* 00012 00013 All rights reserved. 00014 00015 Redistribution and use in source and binary forms, with or without 00016 modification, are permitted provided that the following conditions are met: 00017 00018 * Redistributions of source code must retain the above copyright 00019 notice, this list of conditions and the following disclaimer. 00020 * Redistributions in binary form must reproduce the above copyright 00021 notice, this list of conditions and the following disclaimer in 00022 the documentation and/or other materials provided with the 00023 distribution. 00024 00025 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00026 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00027 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00028 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00029 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00030 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00031 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00032 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00033 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00034 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00035 POSSIBILITY OF SUCH DAMAGE. 00036 00037 */ 00038 00039 package de.mfuchs.xmlstorage; 00040 00041 import java.util.Vector; 00042 00043 public class XPath extends Vector<XPathElement> 00044 { 00045 private static final long serialVersionUID = 1L; 00046 00047 public final boolean _absolute; 00048 00049 public XPath() 00050 { 00051 _absolute = false; 00052 } 00053 00054 public XPath(String path) 00055 { 00056 _absolute = init(path); 00057 } 00058 00059 private boolean init(String path) 00060 { 00061 boolean absolute; 00062 int idx = 0; 00063 00064 // Is this an absolute path? 00065 if (path.length()>0 && path.charAt(0)=='/') { 00066 absolute = true; 00067 00068 ++idx; 00069 } else 00070 absolute = false; 00071 00072 // parse path 00073 while(idx < path.length()) { 00074 XPathElement elem = new XPathElement(); 00075 00076 idx = elem.parse(path, idx); 00077 00078 if (idx == -1) 00079 break; 00080 00081 add(elem); 00082 00083 if (idx >= path.length()) 00084 break; 00085 00086 if (path.charAt(idx) == '/') 00087 ++idx; 00088 } 00089 00090 return absolute; 00091 } 00092 }