001 package biweekly.property.marshaller;
002
003 import java.util.List;
004
005 import biweekly.ICalDataType;
006 import biweekly.io.CannotParseException;
007 import biweekly.io.json.JCalValue;
008 import biweekly.io.xml.XCalElement;
009 import biweekly.parameter.ICalParameters;
010 import biweekly.property.UtcOffsetProperty;
011 import biweekly.util.UtcOffset;
012
013 /*
014 Copyright (c) 2013, Michael Angstadt
015 All rights reserved.
016
017 Redistribution and use in source and binary forms, with or without
018 modification, are permitted provided that the following conditions are met:
019
020 1. Redistributions of source code must retain the above copyright notice, this
021 list of conditions and the following disclaimer.
022 2. Redistributions in binary form must reproduce the above copyright notice,
023 this list of conditions and the following disclaimer in the documentation
024 and/or other materials provided with the distribution.
025
026 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
027 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
028 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
029 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
030 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
031 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
032 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
033 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
034 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
035 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
036 */
037
038 /**
039 * Marshals properties that have UTC offset values.
040 * @param <T> the property class
041 * @author Michael Angstadt
042 */
043 public abstract class UtcOffsetPropertyMarshaller<T extends UtcOffsetProperty> extends ICalPropertyMarshaller<T> {
044 public UtcOffsetPropertyMarshaller(Class<T> clazz, String propertyName) {
045 super(clazz, propertyName, ICalDataType.UTC_OFFSET);
046 }
047
048 @Override
049 protected String _writeText(T property) {
050 UtcOffset offset = property.getOffset();
051 if (offset != null) {
052 return offset.toString(false);
053 }
054
055 return "";
056 }
057
058 @Override
059 protected T _parseText(String value, ICalDataType dataType, ICalParameters parameters, List<String> warnings) {
060 value = unescape(value);
061 return parse(value);
062 }
063
064 @Override
065 protected void _writeXml(T property, XCalElement element) {
066 String offsetStr = null;
067
068 UtcOffset offset = property.getOffset();
069 if (offset != null) {
070 offsetStr = offset.toString(true);
071 }
072
073 element.append(dataType(property), offsetStr);
074 }
075
076 @Override
077 protected T _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
078 String value = element.first(defaultDataType);
079 if (value != null) {
080 return parse(value);
081 }
082
083 throw missingXmlElements(defaultDataType);
084 }
085
086 @Override
087 protected JCalValue _writeJson(T property) {
088 UtcOffset offset = property.getOffset();
089 if (offset != null) {
090 return JCalValue.single(offset.toString(true));
091 }
092
093 return JCalValue.single("");
094 }
095
096 @Override
097 protected T _parseJson(JCalValue value, ICalDataType dataType, ICalParameters parameters, List<String> warnings) {
098 return parse(value.asSingle());
099 }
100
101 protected abstract T newInstance(UtcOffset offset);
102
103 private T parse(String value) {
104 if (value == null) {
105 return newInstance(null);
106 }
107
108 try {
109 return newInstance(UtcOffset.parse(value));
110 } catch (IllegalArgumentException e) {
111 throw new CannotParseException("Could not parse offset string.");
112 }
113 }
114 }