/*
* (non-Javadoc)
*
* @see
* com.thoughtworks.xstream.converters.Converter#unmarshal(com.thoughtworks
* .xstream.io.HierarchicalStreamReader,
* com.thoughtworks.xstream.converters.UnmarshallingContext)
*/
@Override
@SuppressWarnings("unchecked")
public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
DataCenterInfo info = null;
while (reader.hasMoreChildren()) {
reader.moveDown();
if (ELEM_NAME.equals(reader.getNodeName())) {
final String dataCenterName = reader.getValue();
if (DataCenterInfo.Name.Amazon.name().equalsIgnoreCase(dataCenterName)) {
info = new AmazonInfo();
} else {
final DataCenterInfo.Name name = DataCenterInfo.Name.valueOf(dataCenterName);
info =
new DataCenterInfo() {
@Override
public Name getName() {
return name;
}
};
}
} else if (NODE_METADATA.equals(reader.getNodeName())) {
if (info.getName() == Name.Amazon) {
Map<String, String> metadataMap =
(Map<String, String>) context.convertAnother(info, Map.class);
Map<String, String> metadataMapInter = new HashMap<String, String>(metadataMap.size());
for (Map.Entry<String, String> entry : metadataMap.entrySet()) {
metadataMapInter.put(
StringCache.intern(entry.getKey()), StringCache.intern(entry.getValue()));
}
((AmazonInfo) info).setMetadata(metadataMapInter);
}
}
reader.moveUp();
}
return info;
}
private Map<String, String> unmarshalMap(
HierarchicalStreamReader reader, UnmarshallingContext context) {
Map<String, String> map = Collections.emptyMap();
while (reader.hasMoreChildren()) {
if (map == Collections.EMPTY_MAP) {
map = new HashMap<String, String>();
}
reader.moveDown();
String key = reader.getNodeName();
String value = reader.getValue();
reader.moveUp();
map.put(StringCache.intern(key), value);
}
return map;
}
public static String intern(String original) {
return INSTANCE.cachedValueOf(original);
}