How can I keep XML Schema types in WSDL after using XmlAdapter wrappers in web services?

Issue

• When using the package-info.java on our package level classes, we created a DateAdapter, BooleanAdapter, and LongAdapter wrapper classes.
• For instance, the LongAdapter class is as follows:

public class LongAdapter extends XmlAdapter<String, Long> {
  @Override
  public Long unmarshal(String value) throws Exception { ... }
  @Override
  public String marshal(Long value) throws Exception { ... }
}

• This worked, but we noticed that the WSDL that is generated converted the previous Date, Long, and Boolean data types in the WSDL to String.
• We wanted to know if we can retain the previous data types from before. Is there another approach to keep the data types intact?