michael@0: /**
michael@0:  * Copyright (c) 2012, Ben Fortuna
michael@0:  * All rights reserved.
michael@0:  *
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  *
michael@0:  *  o Redistributions of source code must retain the above copyright
michael@0:  * notice, this list of conditions and the following disclaimer.
michael@0:  *
michael@0:  *  o Redistributions in binary form must reproduce the above copyright
michael@0:  * notice, this list of conditions and the following disclaimer in the
michael@0:  * documentation and/or other materials provided with the distribution.
michael@0:  *
michael@0:  *  o Neither the name of Ben Fortuna nor the names of any other contributors
michael@0:  * may be used to endorse or promote products derived from this software
michael@0:  * without specific prior written permission.
michael@0:  *
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
michael@0:  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
michael@0:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
michael@0:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
michael@0:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
michael@0:  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
michael@0:  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
michael@0:  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
michael@0:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0:  */
michael@0: package net.fortuna.ical4j.transform;
michael@0: 
michael@0: import java.util.Iterator;
michael@0: import net.fortuna.ical4j.model.Calendar;
michael@0: import net.fortuna.ical4j.model.Component;
michael@0: import net.fortuna.ical4j.model.Property;
michael@0: import net.fortuna.ical4j.model.PropertyList;
michael@0: import net.fortuna.ical4j.model.property.Method;
michael@0: import net.fortuna.ical4j.model.property.Sequence;
michael@0: 
michael@0: /**
michael@0:  * $Id$
michael@0:  *
michael@0:  * Created: 26/09/2004
michael@0:  *
michael@0:  * Transforms a calendar for publishing.
michael@0:  * @author benfortuna
michael@0:  */
michael@0: public class PublishTransformer extends Transformer {
michael@0: 
michael@0:     /**
michael@0:      * {@inheritDoc}
michael@0:      */
michael@0:     public final Calendar transform(final Calendar calendar) {
michael@0:         PropertyList calProps = calendar.getProperties();
michael@0: 
michael@0:         Property method = calProps.getProperty(Property.METHOD);
michael@0: 
michael@0:         if (method != null) {
michael@0:             calProps.remove(method);
michael@0:         }
michael@0: 
michael@0:         calProps.add(Method.PUBLISH);
michael@0: 
michael@0:         // if a calendar component has already been published previously
michael@0:         // update the sequence number..
michael@0:         for (Iterator i = calendar.getComponents().iterator(); i.hasNext();) {
michael@0:             Component component = (Component) i.next();
michael@0: 
michael@0:             PropertyList compProps = component.getProperties();
michael@0: 
michael@0:             Sequence sequence = (Sequence) compProps
michael@0:                     .getProperty(Property.SEQUENCE);
michael@0: 
michael@0:             if (sequence == null) {
michael@0:                 compProps.add(new Sequence(0));
michael@0:             }
michael@0:             else {
michael@0:                 compProps.remove(sequence);
michael@0:                 compProps.add(new Sequence(sequence.getSequenceNo() + 1));
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         return calendar;
michael@0:     }
michael@0: 
michael@0: }