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.DateOrDateTimeProperty;
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 either "date" or "date-time" values.
039 * @author Michael Angstadt
040 */
041 public abstract class DateOrDateTimePropertyMarshaller<T extends DateOrDateTimeProperty> extends ICalPropertyMarshaller<T> {
042 public DateOrDateTimePropertyMarshaller(Class<T> clazz, String propertyName) {
043 super(clazz, propertyName);
044 }
045
046 @Override
047 protected void _prepareParameters(T property, ICalParameters copy) {
048 Value value = (property.getValue() == null || property.hasTime()) ? null : Value.DATE;
049 copy.setValue(value);
050 }
051
052 @Override
053 protected String _writeText(T property) {
054 Date value = property.getValue();
055 if (value == null) {
056 return "";
057 }
058
059 return date(value).time(property.hasTime()).tzid(property.getParameters().getTimezoneId()).write();
060 }
061
062 @Override
063 protected T _parseText(String value, ICalParameters parameters, List<String> warnings) {
064 value = unescape(value);
065
066 return parse(value, parameters, warnings);
067 }
068
069 @Override
070 protected void _writeXml(DateOrDateTimeProperty property, XCalElement element) {
071 Date value = property.getValue();
072 if (value == null) {
073 return;
074 }
075
076 Value dataType = property.hasTime() ? Value.DATE_TIME : Value.DATE;
077 String dateStr = date(value).time(property.hasTime()).tzid(property.getParameters().getTimezoneId()).extended(true).write();
078 element.append(dataType, dateStr);
079 }
080
081 @Override
082 protected T _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
083 String value = element.first(Value.DATE_TIME);
084 if (value == null) {
085 value = element.first(Value.DATE);
086 }
087 return parse(value, parameters, warnings);
088 }
089
090 protected abstract T newInstance(Date date, boolean hasTime);
091
092 private T parse(String value, ICalParameters parameters, List<String> warnings) {
093 if (value == null) {
094 return newInstance(null, true);
095 }
096
097 try {
098 Date date = date(value).tzid(parameters.getTimezoneId(), warnings).parse();
099 boolean hasTime = value.contains("T");
100 return newInstance(date, hasTime);
101 } catch (IllegalArgumentException e) {
102 throw new CannotParseException("Could not parse date value.");
103 }
104 }
105 }