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Support for additional non-standard iCalendar objects
There is a newer version: 2.0.0-rc5
/**
 * Copyright (c) 2012, Ben Fortuna
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  o Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 *  o Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 *  o Neither the name of Ben Fortuna nor the names of any other contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package net.fortuna.ical4j.extensions.caldav.property;

import net.fortuna.ical4j.model.*;
import net.fortuna.ical4j.validate.ValidationException;

/**
 * This property is a non-standard property for iCal Server/Calendar Server
 *
 * @author probert
 * @see caldav-privateevents.txt
 */
public class CalendarServerAccess extends Property {

    private static final long serialVersionUID = 2182103734645261668L;

    public static final String PROPERTY_NAME = "X-CALENDARSERVER-ACCESS";

    private String value;

    public static final CalendarServerAccess PUBLIC = new ImmutableCalendarServerAccess("PUBLIC");

    public static final CalendarServerAccess PRIVATE = new ImmutableCalendarServerAccess("PRIVATE");

    public static final CalendarServerAccess CONFIDENTIAL = new ImmutableCalendarServerAccess("CONFIDENTIAL");

    public static final CalendarServerAccess RESTRICTED = new ImmutableCalendarServerAccess("RESTRICTED");

    public CalendarServerAccess() {
        super(PROPERTY_NAME, PropertyFactoryImpl.getInstance());
    }

    public CalendarServerAccess(ParameterList aList, String value) {
        super(PROPERTY_NAME, aList, PropertyFactoryImpl.getInstance());
        setValue(value);
    }

    @Override
    public void setValue(String aValue) {
        this.value = aValue;
    }

    @Override
    public void validate() throws ValidationException {
    }

    @Override
    public String getValue() {
        return value;
    }

    private static final class ImmutableCalendarServerAccess extends CalendarServerAccess {
        private static final long serialVersionUID = -2054338254L;

        private ImmutableCalendarServerAccess(String value) {
            super(new ParameterList(true), value);
        }

        public void setValue(String aValue) {
            throw new UnsupportedOperationException("Cannot modify constant instances");
        }
    }

    public static class Factory extends Content.Factory implements PropertyFactory {

        private static final long serialVersionUID = 2099427445505899578L;

        public CalendarServerAccess createProperty() {
            return new CalendarServerAccess();
        }

        public CalendarServerAccess createProperty(ParameterList parameters, String value) {
            CalendarServerAccess property = null;
            if (PUBLIC.getValue().equals(value)) {
                property = PUBLIC;
            } else {
                property = new CalendarServerAccess(parameters, value);
            }
            return property;
        }
    }

}