Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * The contents of this file are subject to the Regenstrief Public License
 * Version 1.0 (the "License"); you may not use this file except in compliance with the License.
 * Please contact Regenstrief Institute if you would like to obtain a copy of the license.
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) Regenstrief Institute.  All Rights Reserved.
 */

import org.w3c.dom.*;

public class Main {
    /**
     * Retrieves the desired attribute from the given Node
     * 
     * @param xml the Node
     * @param attr the attribute name String
     * @return the attribute value String
     **/
    public final static String getAttribute(final Node xml, final String attr) {
        if (xml == null) {
            return null;
        }
        final NamedNodeMap attrs = xml.getAttributes();
        return attrs == null ? null : xmlFindTextNode(attrs.getNamedItem(attr));
    }

    /**
     * Retrieves the desired attribute from the given Node
     * 
     * @param xml the Node
     * @param namespaceURI the attribute namespace URI String
     * @param localName the attribute local name String
     * @return the attribute value String
     **/
    public final static String getAttribute(final Node xml, final String namespaceURI, final String localName) {
        return xml == null ? null : xmlFindTextNode(xml.getAttributes().getNamedItemNS(namespaceURI, localName));
    }

    /**
     * returns contents of first TextNode defined within an XML Node
     * 
     * @param xmlNode parsed XML Node in which to look for a TextNode
     * @return text character string value of text node
     **/
    public static String xmlFindTextNode(final Node xmlNode) {
        if (xmlNode == null) {
            return null;
        }

        final NodeList children = xmlNode.getChildNodes();
        final int childrenCnt = size(children);
        for (int j = 0; j < childrenCnt; j++) {
            final Node childNode = children.item(j);
            if ((childNode != null) && (childNode.getNodeType() == Node.TEXT_NODE)) {
                return childNode.getNodeValue();
            }
        }
        return null;
    }

    public static Node getNamedItem(final NamedNodeMap nodeMap, final String name) {
        return nodeMap == null ? null : nodeMap.getNamedItem(name);
    }

    public static Node getNamedItemNS(final NamedNodeMap nodeMap, final String namespaceURI,
            final String localName) {
        return nodeMap == null ? null : nodeMap.getNamedItemNS(namespaceURI, localName);
    }

    /**
     * Retrieves the number of Nodes in the NodeList
     * 
     * @param nodeList the NodeList
     * @return the number of Nodes
     **/
    public final static int size(final NodeList nodeList) {
        return nodeList == null ? 0 : nodeList.getLength();
    }

    /**
     * Retrieves the number of Nodes in the NamedNodeMap
     * 
     * @param nodeMap the NamedNodeMap
     * @return the number of Nodes
     **/
    public final static int size(final NamedNodeMap nodeMap) {
        return nodeMap == null ? 0 : nodeMap.getLength();
    }

    /**
     * Retrieves the number of Nodes in the tree rooted at the given Node
     * 
     * @param node the root Node
     * @return the number of Nodes
     **/
    public final static int size(final Node node) {
        if (node == null) {
            return 0;
        }

        final NodeList children = node.getChildNodes();
        int size = 1;
        for (int i = 0, n = size(children); i < n; i++) {
            size += size(children.item(i));
        }

        return size;
    }
}