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.IntegerProperty;
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 integer values.
039 * @param <T> the property class
040 * @author Michael Angstadt
041 */
042 public abstract class IntegerPropertyMarshaller<T extends IntegerProperty> extends ICalPropertyMarshaller<T> {
043 public IntegerPropertyMarshaller(Class<T> clazz, String propertyName) {
044 super(clazz, propertyName, ICalDataType.INTEGER);
045 }
046
047 @Override
048 protected String _writeText(T property) {
049 Integer value = property.getValue();
050 if (value != null) {
051 return value.toString();
052 }
053
054 return "";
055 }
056
057 @Override
058 protected T _parseText(String value, ICalDataType dataType, ICalParameters parameters, List<String> warnings) {
059 value = unescape(value);
060 return parse(value);
061 }
062
063 @Override
064 protected void _writeXml(T property, XCalElement element) {
065 String valueStr = null;
066
067 Integer value = property.getValue();
068 if (value != null) {
069 valueStr = value.toString();
070 }
071
072 element.append(dataType(property), valueStr);
073 }
074
075 @Override
076 protected T _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
077 String value = element.first(defaultDataType);
078 if (value != null) {
079 return parse(value);
080 }
081
082 throw missingXmlElements(defaultDataType);
083 }
084
085 @Override
086 protected JCalValue _writeJson(T property) {
087 return JCalValue.single(property.getValue());
088 }
089
090 @Override
091 protected T _parseJson(JCalValue value, ICalDataType dataType, ICalParameters parameters, List<String> warnings) {
092 return parse(value.asSingle());
093 }
094
095 private T parse(String value) {
096 if (value == null || value.length() == 0) {
097 return newInstance(null);
098 }
099
100 try {
101 Integer intValue = Integer.valueOf(value);
102 return newInstance(intValue);
103 } catch (NumberFormatException e) {
104 throw new CannotParseException("Could not parse integer value.");
105 }
106 }
107
108 protected abstract T newInstance(Integer value);
109 }