JSON Serialization

JSON Serialization

Internally, the Thrift entity manager stores data in JSON format using the Jackson Mapper library. JSON serialization is way faster than the old plain Object serialization since only data are serialized, not class structure.

By default, Achilles sets up an internal Object Mapper with the following feature config:

1. Serialization Inclusion = NON NULL
2. Deserialization FAIL_ON_UNKNOWN_PROPERTIES = false
3. JacksonAnnotationIntrospector + JaxbAnnotationIntrospector

Jackson will serialize all your entities even if they do not have any JSON annotations. You can also use JAXB annotations.

Otherwise you can inject a custom *Object Mapper into Achilles as constructor argument for the ThriftEntityManagerFactoryImpl class.

Last but not least, it is possible to further custom JSON serialization using the ObjectMapperFactory interface:

public interface ObjectMapperFactory
{
	public <T> ObjectMapper getMapper(Class<T> type);
} 

All you need is to pass an implementation of this interface to the ThriftEntityManagerFactoryImpl as a inititialization parameter.