001    package biweekly.property;
002    
003    import java.util.List;
004    
005    import biweekly.component.ICalComponent;
006    import biweekly.util.Recurrence;
007    
008    /*
009     Copyright (c) 2013, Michael Angstadt
010     All rights reserved.
011    
012     Redistribution and use in source and binary forms, with or without
013     modification, are permitted provided that the following conditions are met: 
014    
015     1. Redistributions of source code must retain the above copyright notice, this
016     list of conditions and the following disclaimer. 
017     2. Redistributions in binary form must reproduce the above copyright notice,
018     this list of conditions and the following disclaimer in the documentation
019     and/or other materials provided with the distribution. 
020    
021     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
022     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
023     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
024     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
025     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
026     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
027     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
028     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
029     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031     */
032    
033    /**
034     * <p>
035     * Defines how often a component repeats.
036     * </p>
037     * <p>
038     * <b>Examples:</b>
039     * 
040     * <pre class="brush:java">
041     * //&quot;bi-weekly&quot;
042     * Recurrence recur = new Recurrence.Builder(Frequency.WEEKLY).interval(2).build();
043     * RecurrenceRule rrule = new RecurrenceRule(recur);
044     * </pre>
045     * 
046     * </p>
047     * @author Michael Angstadt
048     * @rfc 5545 p.122-32
049     */
050    public class RecurrenceRule extends RecurrenceProperty {
051            /**
052             * Creates a new recurrence rule property.
053             * @param recur the recurrence rule
054             */
055            public RecurrenceRule(Recurrence recur) {
056                    super(recur);
057            }
058    
059            @Override
060            protected void validate(List<ICalComponent> components, List<String> warnings) {
061                    super.validate(components, warnings);
062                    if (value == null) {
063                            return;
064                    }
065    
066                    if (!value.getXRules().isEmpty()) {
067                            warnings.add("Non-standard rule parts are not allowed in the latest iCal specification.");
068                    }
069            }
070    }