xmlheader.java

来自「opennms得相关源码 请大家看看」· Java 代码 · 共 201 行

//
// This file is part of the OpenNMS(R) Application.
//
// OpenNMS(R) is Copyright (C) 2002-2003 The OpenNMS Group, Inc.  All rights reserved.
// OpenNMS(R) is a derivative work, containing both original code, included code and modified
// code that was published under the GNU General Public License. Copyrights for modified 
// and included code are below.
//
// OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
//
// Copyright (C) 1999-2001 Oculan Corp.  All rights reserved.
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// For more information contact:
//      OpenNMS Licensing       <[e-mail]>
//      http://www.opennms.org/
//      http://www.opennms.com/
//

package org.opennms.web.parsers;

import java.net.InetAddress;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**
 * This class holds the information parsed from a header of an OpenNMS xml file.
 * 
 * @author <A HREF="mailto:[e-mail]">Jason Johns </A>
 * @author <A HREF="http://www.opennms.org/">OpenNMS </A>
 * 
 * @version 1.1.1.1
 * 
 */
public class XMLHeader {
    /*
     * XML Tag names
     */
    private static final String HEADER = "header";

    private static final String REV = "rev";

    private static final String CREATED = "created";

    private static final String CREATED_ATT_YEAR = "year";

    private static final String CREATED_ATT_MONTH = "month";

    private static final String CREATED_ATT_DAY = "day";

    private static final String CREATED_ATT_HOUR = "hour";

    private static final String CREATED_ATT_MIN = "min";

    private static final String CREATED_ATT_SEC = "sec";

    private static final String MSTATION = "mstation";

    /**
     */
    protected Document m_document;

    /**
     */
    protected Element m_root;

    /**
     */
    protected Element m_headerElement;

    /**
     */
    protected String m_version;

    /**
     * Default constructor, does nothing
     */
    public XMLHeader() {
    }

    /**
     */
    public XMLHeader(String version, Document document) {
        m_document = document;
        m_version = version;

        buildDocument();
    }

    /**
     * Sets the version
     * 
     * @param aVersion
     *            the version
     */
    public void setVersion(String aVersion) {
        m_version = aVersion;
    }

    /**
     * Returns the version
     * 
     * @return the version
     */
    public String getVersion() {
        return m_version;
    }

    /**
     * Sets the master station
     * 
     * @param aStation
     *            the master station
     */
    public void setMasterStation(String aStation) {
        // m_masterStation = aStation;
    }

    /**
     * Returns the master station
     * 
     * @return the master station
     */
    public String getMasterStation() {
        return getHost();
    }

    /**
     */
    private String getHost() {
        String hostName = "localhost";

        try {
            InetAddress address = InetAddress.getLocalHost();
            hostName = address.getHostName();
        } catch (Exception e) {
            // do nothing, the hostname will default to localhost
        }

        return hostName;
    }

    /**
     */
    public void buildDocument() {
        m_headerElement = m_document.createElement(HEADER);

        Element revElement = m_document.createElement(REV);
        m_headerElement.appendChild(revElement);
        revElement.appendChild(m_document.createTextNode(getVersion()));

        Element createdElement = m_document.createElement(CREATED);
        m_headerElement.appendChild(createdElement);

        // add the created date attributes
        Calendar time = new GregorianCalendar();

        createdElement.setAttribute(CREATED_ATT_YEAR, "" + time.get(Calendar.YEAR));
        createdElement.setAttribute(CREATED_ATT_MONTH, "" + (1 + time.get(Calendar.MONTH)));
        createdElement.setAttribute(CREATED_ATT_DAY, "" + time.get(Calendar.DAY_OF_MONTH));
        createdElement.setAttribute(CREATED_ATT_HOUR, "" + time.get(Calendar.HOUR));
        createdElement.setAttribute(CREATED_ATT_MIN, "" + time.get(Calendar.MINUTE));
        createdElement.setAttribute(CREATED_ATT_SEC, "" + time.get(Calendar.SECOND));

        createdElement.appendChild(m_document.createTextNode("" + ((Date) time.getTime()).getTime()));

        Element stationElement = m_document.createElement(MSTATION);
        m_headerElement.appendChild(stationElement);
        stationElement.appendChild(m_document.createTextNode(getHost()));
    }

    /**
     */
    public Element getHeaderElement() {
        return m_headerElement;
    }

    /**
     */
    public String toString() {
        return "";
    }
}