001 package biweekly.property.marshaller;
002
003 import java.util.List;
004
005 import biweekly.io.xml.XCalElement;
006 import biweekly.parameter.ICalParameters;
007 import biweekly.parameter.Value;
008 import biweekly.property.ListProperty;
009 import biweekly.util.StringUtils;
010 import biweekly.util.StringUtils.JoinCallback;
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 contain a list of values.
039 * @author Michael Angstadt
040 */
041 public abstract class ListPropertyMarshaller<T extends ListProperty<V>, V> extends ICalPropertyMarshaller<T> {
042 protected Value dataType;
043
044 public ListPropertyMarshaller(Class<T> clazz, String propertyName) {
045 this(clazz, propertyName, Value.TEXT);
046 }
047
048 public ListPropertyMarshaller(Class<T> clazz, String propertyName, Value dataType) {
049 super(clazz, propertyName);
050 this.dataType = dataType;
051 }
052
053 @Override
054 protected String _writeText(final T property) {
055 return StringUtils.join(property.getValues(), ",", new JoinCallback<V>() {
056 public void handle(StringBuilder sb, V value) {
057 String valueStr = writeValue(property, value);
058 sb.append(escape(valueStr));
059 }
060 });
061 }
062
063 @Override
064 protected T _parseText(String value, ICalParameters parameters, List<String> warnings) {
065 T property = newInstance(parameters);
066
067 String split[] = parseList(value);
068 for (String s : split) {
069 V v = readValue(s, parameters, warnings);
070 property.addValue(v);
071 }
072
073 return property;
074 }
075
076 @Override
077 protected void _writeXml(T property, XCalElement element) {
078 for (V value : property.getValues()) {
079 String valueStr = writeValue(property, value);
080 element.append(dataType, valueStr);
081 }
082 }
083
084 @Override
085 protected T _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
086 T property = newInstance(parameters);
087
088 for (String valueStr : element.all(dataType)) {
089 V value = readValue(valueStr, parameters, warnings);
090 property.addValue(value);
091 }
092
093 return property;
094 }
095
096 protected abstract T newInstance(ICalParameters parameters);
097
098 protected abstract String writeValue(T property, V value);
099
100 protected abstract V readValue(String value, ICalParameters parameters, List<String> warnings);
101 }