001    package biweekly.property.marshaller;
002    
003    import java.util.Date;
004    import java.util.List;
005    
006    import biweekly.io.CannotParseException;
007    import biweekly.io.xml.XCalElement;
008    import biweekly.parameter.ICalParameters;
009    import biweekly.parameter.Value;
010    import biweekly.property.DateTimeProperty;
011    
012    /*
013     Copyright (c) 2013, Michael Angstadt
014     All rights reserved.
015    
016     Redistribution and use in source and binary forms, with or without
017     modification, are permitted provided that the following conditions are met: 
018    
019     1. Redistributions of source code must retain the above copyright notice, this
020     list of conditions and the following disclaimer. 
021     2. Redistributions in binary form must reproduce the above copyright notice,
022     this list of conditions and the following disclaimer in the documentation
023     and/or other materials provided with the distribution. 
024    
025     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
026     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
027     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
028     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
029     ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
030     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
031     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
032     ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
033     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
034     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
035     */
036    
037    /**
038     * Marshals properties that have "date-time" values.
039     * @author Michael Angstadt
040     */
041    public abstract class DateTimePropertyMarshaller<T extends DateTimeProperty> extends ICalPropertyMarshaller<T> {
042            public DateTimePropertyMarshaller(Class<T> clazz, String propertyName) {
043                    super(clazz, propertyName);
044            }
045    
046            @Override
047            protected String _writeText(T property) {
048                    Date value = property.getValue();
049                    if (value == null) {
050                            return "";
051                    }
052                    return date(value).write(); //should always be in UTC time
053            }
054    
055            @Override
056            protected T _parseText(String value, ICalParameters parameters, List<String> warnings) {
057                    value = unescape(value);
058    
059                    return parse(value, parameters, warnings);
060            }
061    
062            @Override
063            protected void _writeXml(T property, XCalElement element) {
064                    Date value = property.getValue();
065                    if (value == null) {
066                            return;
067                    }
068    
069                    element.append(Value.DATE_TIME, date(value).extended(true).write()); //should always be in UTC time
070            }
071    
072            @Override
073            protected T _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
074                    String value = element.first(Value.DATE_TIME);
075                    if (value == null) {
076                            return newInstance(null);
077                    }
078    
079                    return parse(value, parameters, warnings);
080            }
081    
082            private T parse(String value, ICalParameters parameters, List<String> warnings) {
083                    try {
084                            Date date = date(value).tzid(parameters.getTimezoneId(), warnings).parse();
085                            return newInstance(date);
086                    } catch (IllegalArgumentException e) {
087                            throw new CannotParseException("Could not parse date-time value.");
088                    }
089            }
090    
091            protected abstract T newInstance(Date date);
092    }