Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import org.w3c.dom.Element;

import org.w3c.dom.Node;

public class Main {
    /**
     * Finds the first (direct) child element with a given tag name and attribute.
     * 
     * @param parent the parent element below which to search the child
     * @param tagName the (tag) name of the desired child element
     * @param attrName the name of the attribute which value must match the given value
     * @param value the attribute value to which elements are matched.
     * @return the child element if an element of that name existed, or null otherwise
     */
    static public Element findFirstChildWithAttrib(Node parent, String tagName, String attrName, Object value) {
        Element elem = findFirstChild(parent, tagName);
        if (attrName == null)
            return null;
        while (elem != null) { // Check Value
            String attrValue = elem.getAttribute(attrName);
            if (attrValue == null || attrValue.length() < 1) { // Attribute is null
                if (value == null)
                    break; // gefunden!
            } else { // Attribute is not null
                if (attrValue.equals(value.toString()))
                    break; // gefunden!
            }
            // next
            elem = getNextSiblingElement(elem, true);
        }
        return elem;
    }

    /**
     * Finds the first (direct) child Element with a given tag name.
     * 
     * @param parent the parent element below which to search the child
     * @param tagName the (tag) name of the desired child element
     * @return the child element if an element of that name existed, or null otherwise
     */
    static public Element findFirstChild(Node parent, String tagName) { // Child Element suchen
        if (parent == null)
            return null;
        Node node = parent.getFirstChild();
        while (node != null) { // Find all Element nodes
            if (node.getNodeType() == Node.ELEMENT_NODE) { // check name
                Element elem = (Element) node;
                if (tagName.equalsIgnoreCase(elem.getTagName()))
                    return elem; // found
            }
            node = node.getNextSibling();
        }
        return null; // not found!
    }

    /**
     * Returns the next sibling Element for an element, optionally matching tag names.
     * 
     * @param child the element from which to search for a next sibling
     * @param sameName true to retrive the next sibling element of the same name, of false if any name is allowed
     * @return the next sibling element if one exists, or null otherwise
     */
    static public Element getNextSiblingElement(Element child, boolean sameName) { // Child Element suchen
        if (child == null)
            return null;
        String name = child.getTagName();
        Node node = child.getNextSibling();
        while (node != null) { // Find all Element nodes
            if (node.getNodeType() == Node.ELEMENT_NODE) { // check name
                Element elem = (Element) node;
                if (sameName && name.equalsIgnoreCase(elem.getTagName()))
                    return elem; // found
            }
            node = node.getNextSibling();
        }
        return null; // not found!
    }

    /**
     * Gets the first (direct) child Element.
     * 
     * @param parent the parent element below which to search the child
     * @return the first child element, or null otherwise
     */
    static public Element getFirstChild(Node parent) { // Child Element suchen
        if (parent == null)
            return null;
        Node node = parent.getFirstChild();
        while (node != null) { // Find all Element nodes
            if (node.getNodeType() == Node.ELEMENT_NODE)
                return (Element) node; // found
            node = node.getNextSibling();
        }
        return null; // not found!
    }
}