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 /**

  * 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.model.component;

 import net.fortuna.ical4j.model.Component;

 import net.fortuna.ical4j.model.Parameter;

 import net.fortuna.ical4j.model.Property;

 import net.fortuna.ical4j.model.PropertyList;

 import net.fortuna.ical4j.model.ValidationException;

 import net.fortuna.ical4j.model.parameter.Value;

 import net.fortuna.ical4j.model.property.DtEnd;

 import net.fortuna.ical4j.model.property.DtStart;

 import net.fortuna.ical4j.util.PropertyValidator;

 /**

  * $Id$ [05-Apr-2004]

  *

  * Defines an iCalendar Available component.

  *

  * <pre>

  *

  *       availablec  = "BEGIN" ":" "AVAILABLE" CRLF

  *

  *                    availableprop

  *

  *                    "END" ":" "AVAILABLE" CRLF

  *

           availableprop  = *(

                          ; the following are REQUIRED,

                          ; but MUST NOT occur more than once

                          dtstamp / dtstart / uid /

                          ; either a 'dtend' or a 'duration' is required

                          ; in a 'availableprop', but 'dtend' and

                          ; 'duration' MUST NOT occur in the same

                          ; 'availableprop', and each MUST NOT occur more

                          ; than once

                          dtend / duration /

                          ; the following are OPTIONAL,

                          ; but MUST NOT occur more than once

                          created / last-mod / recurid / rrule /

                          summary /

                          ; the following are OPTIONAL,

                          ; and MAY occur more than once

                          categories / comment / contact / exdate /

                          rdate / x-prop

                          )

  * </pre>

  *

  * @author Ben Fortuna

  * @author Mike Douglass

  */

 public class Available extends Component {

     private static final long serialVersionUID = -2494710612002978763L;

     /**

      * Default constructor.

      */

     public Available() {

         super(AVAILABLE);

     }

     /**

      * Constructor.

      * @param properties a list of properties

      */

     public Available(final PropertyList properties) {

         super(AVAILABLE, properties);

     }

     /**

      * {@inheritDoc}

      */

     public final void validate(final boolean recurse)

             throws ValidationException {

         /*

          * ; dtstamp / dtstart / uid are required, but MUST NOT occur more than once /

          */

         PropertyValidator.getInstance().assertOne(Property.DTSTART,

                 getProperties());

         PropertyValidator.getInstance().assertOne(Property.DTSTAMP,

                 getProperties());

         PropertyValidator.getInstance().assertOne(Property.UID,

                 getProperties());

         /*       If specified, the "DTSTART" and "DTEND" properties in

          *      "VAVAILABILITY" components and "AVAILABLE" sub-components MUST be

          *      "DATE-TIME" values specified as either date with UTC time or date

          *      with local time and a time zone reference.

          */

         final DtStart start = (DtStart) getProperty(Property.DTSTART);

         if (Value.DATE.equals(start.getParameter(Parameter.VALUE))) {

             throw new ValidationException("Property [" + Property.DTSTART

                     + "] must be a " + Value.DATE_TIME);

         }

         /*

          *                ; the following are optional,

          *                ; but MUST NOT occur more than once

          *

          *               created / last-mod / recurid / rrule /

          *               summary /

          */

         PropertyValidator.getInstance().assertOneOrLess(Property.CREATED,

                 getProperties());

         PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED,

                 getProperties());

         PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID,

                 getProperties());

         PropertyValidator.getInstance().assertOneOrLess(Property.RRULE,

                 getProperties());

         PropertyValidator.getInstance().assertOneOrLess(Property.SUMMARY,

                 getProperties());

         /*

          ; either a 'dtend' or a 'duration' is required

          ; in a 'availableprop', but 'dtend' and

          ; 'duration' MUST NOT occur in the same

          ; 'availableprop', and each MUST NOT occur more

          ; than once

          */

         if (getProperty(Property.DTEND) != null) {

             PropertyValidator.getInstance().assertOne(Property.DTEND,

                     getProperties());

             /* Must be DATE_TIME */

             final DtEnd end = (DtEnd) getProperty(Property.DTEND);

             if (Value.DATE.equals(end.getParameter(Parameter.VALUE))) {

                 throw new ValidationException("Property [" + Property.DTEND

                         + "] must be a " + Value.DATE_TIME);

             }

         } else {

             PropertyValidator.getInstance().assertOne(Property.DURATION,

                     getProperties());

         }

         /*

          * ; the following are optional, ; and MAY occur more than once

          *               categories / comment / contact / exdate /

          *               rdate / x-prop

          */

         if (recurse) {

             validateProperties();

         }

     }

 }