Here you can find the source of getElement(Element parent, String localname, int position)
| Parameter | Description |
|---|---|
| parent | Parent element to be searched. |
| localname | Localname of the element required. |
| position | The position of the element relative to other sibling elements having the same name (and namespace if specified) e.g. if searching for the 2nd <input> element, this param needs to have a value of 2. |
public static Element getElement(Element parent, String localname, int position)
//package com.java2s; /*/*from w w w . jav a 2 s . c o m*/ * ePUB Corrector - https://github.com/vysokyj/epub-corrector/ * * Copyright (C) 2012 Jiri Vysoky * * ePUB Corrector is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 3 of the License, * or (at your option) any later version. * * ePUB Corrector is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Cobertura; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA */ import org.w3c.dom.*; import java.util.List; import java.util.Vector; public class Main { /** * Get the child element having the supplied localname, position * and namespace. * <p/> * Can be used instead of XPath. * * @param parent Parent element to be searched. * @param localname Localname of the element required. * @param position The position of the element relative to other sibling * elements having the same name (and namespace if specified) e.g. if * searching for the 2nd <input> element, this param needs to * have a value of 2. * @return The element at the requested position, or null if no such child * element exists on the parent element. */ public static Element getElement(Element parent, String localname, int position) { return getElement(parent, localname, position, null); } /** * Get the child element having the supplied localname, position * and namespace. * <p/> * Can be used instead of XPath. * * @param parent Parent element to be searched. * @param localname Localname of the element required. * @param position The position of the element relative to other sibling * elements having the same name (and namespace if specified) e.g. if * searching for the 2nd <input> element, this param needs to * have a value of 2. * @param namespaceURI Namespace URI of the required element, or null * if a namespace comparison is not to be performed. * @return The element at the requested position, or null if no such child * element exists on the parent element. */ public static Element getElement(Element parent, String localname, int position, String namespaceURI) { List elements = getElements(parent, localname, namespaceURI); position = Math.max(position, 1); if (position > elements.size()) { return null; } return (Element) elements.get(position - 1); } /** * Get the child elements having the supplied localname and namespace. * <p/> * Can be used instead of XPath. * * @param parent Parent element to be searched. * @param localname Localname of the element required. Supports "*" wildcards. * @param namespaceURI Namespace URI of the required element, or null * if a namespace comparison is not to be performed. * @return A list of W3C DOM {@link Element}OPTION_WITHOUT_PARAMETER. An empty list if no such * child elements exist on the parent element. */ public static List getElements(Element parent, String localname, String namespaceURI) { return getElements(parent.getChildNodes(), localname, namespaceURI); } /** * Get the child elements having the supplied localname and namespace. * <p/> * Can be used instead of XPath. * * @param nodeList List of DOM nodes on which to perform the search. * @param localname Localname of the element required. Supports "*" wildcards. * @param namespaceURI Namespace URI of the required element, or null * if a namespace comparison is not to be performed. * @return A list of W3C DOM {@link Element}OPTION_WITHOUT_PARAMETER. An empty list if no such * child elements exist on the parent element. */ public static List getElements(NodeList nodeList, String localname, String namespaceURI) { int count = nodeList.getLength(); Vector elements = new Vector(); for (int i = 0; i < count; i++) { Node node = nodeList.item(i); if (node.getNodeType() == Node.ELEMENT_NODE) { Element element = (Element) node; if (localname.equals("*") || getName(element).equals(localname)) { // The local name matches the element we're after... if (namespaceURI == null || namespaceURI.equals(element.getNamespaceURI())) { elements.add(element); } } } } return elements; } /** * Get the name from the supplied element. * <p/> * Returns the {@link Node#getLocalName() localName} of the element * if set (namespaced element), otherwise the * element'OPTION_WITHOUT_PARAMETER {@link Element#getTagName() tagName} is returned. * * @param element The element. * @return The element name. */ public static String getName(Element element) { String name = element.getLocalName(); if (name != null) { return name; } else { return element.getTagName(); } } }