UserConfigHandler.java

//    ---------------------------------------------------------------------------
//    jWebSocket - Copyright (c) 2010 jwebsocket.org
//    ---------------------------------------------------------------------------
//    This program is free software; you can redistribute it and/or modify it
//    under the terms of the GNU Lesser General Public License as published by the
//    Free Software Foundation; either version 3 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 Lesser General Public License for
//    more details.
//    You should have received a copy of the GNU Lesser General Public License along
//    with this program; if not, see <http://www.gnu.org/licenses/lgpl.html>.
//    ---------------------------------------------------------------------------
package org.jwebsocket.config.xml;

import java.util.List;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javolution.util.FastList;
import org.jwebsocket.config.Config;
import org.jwebsocket.config.ConfigHandler;

/**
 * The config handler for user config
 * @author puran, aschulze
 * @version $Id: UserConfigHandler.java 596 2010-06-22 17:09:54Z fivefeetfurther $
 */
public class UserConfigHandler implements ConfigHandler {

    private final static String UUID = "uuid";
    private final static String LOGIN_NAME = "loginname";
    private final static String FIRST_NAME = "firstname";
    private final static String LAST_NAME = "lastname";
    private final static String PASSWORD = "password";
    private final static String DESCRIPTION = "description";
    private final static String STATUS = "status";
    private final static String ELEMENT_USER = "user";
    private final static String ELEMENT_ROLES = "roles";
    private final static String ELEMENT_ROLE = "role";

    /**
     * {@inheritDoc}
     */
    @Override
    public Config processConfig(XMLStreamReader aStreamReader) throws XMLStreamException {
        String lUUID = "", lLoginname = "", lFirstname = "", lLastname = "",
                lPassword = "", lDescription = "";
        int status = 0;
        List<String> roles = null;
        while (aStreamReader.hasNext()) {
            aStreamReader.next();
            if (aStreamReader.isStartElement()) {
                String elementName = aStreamReader.getLocalName();
                if (elementName.equals(LOGIN_NAME)) {
                    aStreamReader.next();
                    lLoginname = aStreamReader.getText();
                } else if (elementName.equals(UUID)) {
                    aStreamReader.next();
                    lUUID = aStreamReader.getText();
                } else if (elementName.equals(FIRST_NAME)) {
                    aStreamReader.next();
                    lFirstname = aStreamReader.getText();
                } else if (elementName.equals(LAST_NAME)) {
                    aStreamReader.next();
                    lLastname = aStreamReader.getText();
                } else if (elementName.equals(PASSWORD)) {
                    aStreamReader.next();
                    //TODO: temporary fix to handle error because of blank password value
                    //better figure out something cleaner.
                    if (aStreamReader.getEventType() != 2) {
                        lPassword = aStreamReader.getText();
                    }
                } else if (elementName.equals(DESCRIPTION)) {
                    aStreamReader.next();
                    lDescription = aStreamReader.getText();
                } else if (elementName.equals(STATUS)) {
                    aStreamReader.next();
                    status = Integer.parseInt(aStreamReader.getText());
                } else if (elementName.equals(ELEMENT_ROLES)) {
                    aStreamReader.next();
                    roles = getRoles(aStreamReader);
                } else {
                    //ignore
                }
            }
            if (aStreamReader.isEndElement()) {
                String elementName = aStreamReader.getLocalName();
                if (elementName.equals(ELEMENT_USER)) {
                    break;
                }
            }
        }

        return new UserConfig(lUUID, lLoginname, lFirstname, lLastname,
                lPassword, lDescription, status, roles);
    }

    /**
     * private method that reads the roles 
     * @param aStreamReader the stream reader object
     * @return the list of user roles
     */
    private List<String> getRoles(XMLStreamReader aStreamReader) throws XMLStreamException {
        List<String> lRoles = new FastList<String>();
        while (aStreamReader.hasNext()) {
            aStreamReader.next();
            if (aStreamReader.isStartElement()) {
                String lElementName = aStreamReader.getLocalName();
                if (lElementName.equals(ELEMENT_ROLE)) {
                    aStreamReader.next();
                    String role = aStreamReader.getText();
                    lRoles.add(role);
                }
            }
            if (aStreamReader.isEndElement()) {
                String lElementName = aStreamReader.getLocalName();
                if (lElementName.equals(ELEMENT_ROLES)) {
                    break;
                }
            }
        }
        return lRoles;
    }
}