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 void readMetadata(Object b) {
try {
ObjectInput in = new ClassLoaderAwareInputStream(new ByteArrayInputStream((byte[]) b));
Serializable typeDescWrapper = IOUtils.readObject(in);
SpaceTypeDescriptor typeDescriptor =
SpaceTypeDescriptorVersionedSerializationUtils.fromSerializableForm(typeDescWrapper);
indexBuilder.ensureIndexes(typeDescriptor);
cacheTypeDescriptor(typeDescriptor);
} catch (ClassNotFoundException e) {
logger.error(e);
throw new SpaceMongoDataSourceException("Failed to deserialize: " + b, e);
} catch (IOException e) {
logger.error(e);
throw new SpaceMongoDataSourceException("Failed to deserialize: " + b, e);
}
}