Java XPath Get getValidXpath(String xPath, NamespaceContext context)

Description

get Valid Xpath

License

Open Source License

Declaration

private static String getValidXpath(String xPath,
            NamespaceContext context) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2012 Firestar Software, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:/*from  w w  w  .j  a  va2s .c  om*/
 *     Firestar Software, Inc. - initial API and implementation
 *
 * Author:
 *     Gabriel Oancea
 *
 *******************************************************************************/

import javax.xml.namespace.NamespaceContext;

public class Main {
    public static final String DEFAULT_NS = "DEFAULT_NS";

    private static String getValidXpath(String xPath,
            NamespaceContext context) {
        if (context == null)
            return xPath;
        String namespaceURI = context.getNamespaceURI(DEFAULT_NS);
        // check if there is any default namespace
        if (namespaceURI != null && !namespaceURI.isEmpty()) {
            StringBuilder stringBuilder = new StringBuilder();
            String[] tags = xPath.split("/");
            int length = tags.length;
            for (int i = 0; i < length - 1; i++) {
                createNodeXPath(stringBuilder, tags[i]);
                stringBuilder.append("/");
            }
            createNodeXPath(stringBuilder, tags[length - 1]);
            return stringBuilder.toString();
        }
        return xPath;
    }

    private static void createNodeXPath(StringBuilder stringBuilder,
            String tag) {

        int icln = indexOfNotInQuotes(tag, ':');
        int icat = indexOfNotInQuotes(tag, '@');
        if (icln < 0 && icat != 0) {
            stringBuilder.append(DEFAULT_NS);
            stringBuilder.append(":");
        }
        // todo rewrite, only for test
        tag = tag.replace("[templateId", "[" + DEFAULT_NS + ":"
                + "templateId");
        stringBuilder.append(tag);

    }

    private static int indexOfNotInQuotes(String s, char x) {
        int i = s.indexOf(x);
        if (i < 0)
            return i;
        i = -1;
        int j = 0;
        boolean insideQuotes = false;
        while (j < s.length() && i < 0) {
            char c = s.charAt(j);
            if (c == '\'') {
                if (insideQuotes) {
                    if (0 <= j - 1 && s.charAt(j - 1) != '\\')
                        insideQuotes = false;
                } else
                    insideQuotes = true;
            }
            if (c == x && !insideQuotes)
                i = j;
            j++;
        }
        return i;
    }

    private static int indexOfNotInQuotes(String s, String x) {
        int i = s.indexOf(x);
        if (i < 0)
            return i;
        i = -1;
        int j = 0;
        int n = x.length();
        boolean insideQuotes = false;
        while (j + n < s.length() && i < 0) {
            char c = s.charAt(j);
            if (c == '\'') {
                if (insideQuotes) {
                    if (0 <= j - 1 && s.charAt(j - 1) != '\\')
                        insideQuotes = false;
                } else
                    insideQuotes = true;
            }
            if (!insideQuotes && x.equals(s.substring(j, j + n)))
                i = j;
            j++;
        }
        return i;
    }
}

Related

1. getStringValue(Object doc, XPathExpression path)
2. getStringValue(String targetDoc, String xpathExp, String encoding)
3. getStringValueByXPath(Node node, String xPath)
4. getText(String xPathExpression, Node node)
5. getTextNodes(Node contextNode, String xPath)
6. getValue(final String expression, final String xml)
7. getValueByPath(Node node, String path)
8. getValueByXpath(Node doc, String xquery)
9. getValueFromXML(final String inputXML, final String xPathQuery, final int index)