public void introduceType(SpaceTypeDescriptor typeDescriptor) {
DBCollection m = getConnection().getCollection(METADATA_COLLECTION_NAME);
BasicDBObjectBuilder builder =
BasicDBObjectBuilder.start().add(Constants.ID_PROPERTY, typeDescriptor.getTypeName());
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bos);
IOUtils.writeObject(
out, SpaceTypeDescriptorVersionedSerializationUtils.toSerializableForm(typeDescriptor));
builder.add(TYPE_DESCRIPTOR_FIELD_NAME, bos.toByteArray());
WriteResult wr = m.save(builder.get());
if (logger.isTraceEnabled()) logger.trace(wr);
indexBuilder.ensureIndexes(typeDescriptor);
} catch (IOException e) {
logger.error(e);
throw new SpaceMongoException(
"error occurs while serialize and save type descriptor: " + typeDescriptor, e);
}
}
private static DBObject normalize(DBObject obj) {
BasicDBObjectBuilder builder = BasicDBObjectBuilder.start();
Iterator<String> iterator = obj.keySet().iterator();
builder.push("$set");
while (iterator.hasNext()) {
String key = iterator.next();
if (Constants.ID_PROPERTY.equals(key)) continue;
Object value = obj.get(key);
if (value == null) continue;
builder.add(key, value);
}
return builder.get();
}