001package biweekly.io.scribe.property;
002
003import biweekly.ICalDataType;
004import biweekly.io.CannotParseException;
005import biweekly.io.ParseContext;
006import biweekly.io.WriteContext;
007import biweekly.io.json.JCalValue;
008import biweekly.io.xml.XCalElement;
009import biweekly.parameter.ICalParameters;
010import biweekly.property.IntegerProperty;
011
012/*
013 Copyright (c) 2013-2015, 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 */
042public abstract class IntegerPropertyScribe<T extends IntegerProperty> extends ICalPropertyScribe<T> {
043        public IntegerPropertyScribe(Class<T> clazz, String propertyName) {
044                super(clazz, propertyName, ICalDataType.INTEGER);
045        }
046
047        @Override
048        protected String _writeText(T property, WriteContext context) {
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, ParseContext context) {
059                value = unescape(value);
060                return parse(value);
061        }
062
063        @Override
064        protected void _writeXml(T property, XCalElement element, WriteContext context) {
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, null), valueStr);
073        }
074
075        @Override
076        protected T _parseXml(XCalElement element, ICalParameters parameters, ParseContext context) {
077                ICalDataType dataType = defaultDataType(context.getVersion());
078                String value = element.first(dataType);
079                if (value != null) {
080                        return parse(value);
081                }
082
083                throw missingXmlElements(dataType);
084        }
085
086        @Override
087        protected JCalValue _writeJson(T property, WriteContext context) {
088                return JCalValue.single(property.getValue());
089        }
090
091        @Override
092        protected T _parseJson(JCalValue value, ICalDataType dataType, ICalParameters parameters, ParseContext context) {
093                return parse(value.asSingle());
094        }
095
096        private T parse(String value) {
097                if (value == null || value.length() == 0) {
098                        return newInstance(null);
099                }
100
101                try {
102                        Integer intValue = Integer.valueOf(value);
103                        return newInstance(intValue);
104                } catch (NumberFormatException e) {
105                        throw new CannotParseException(24);
106                }
107        }
108
109        protected abstract T newInstance(Integer value);
110}