object/src/main/java/com/orientechnologies/orient/object/jpa/parsing/JPAHandler.java
@Override
  public void characters(char[] ch, int start, int length) throws SAXException {
    builder.append(ch, start, length);
  }
@Override
  public void characters(char[] ch, int start, int length) throws SAXException {
    builder.append(ch, start, length);
  }
Collect up the characters, as element's characters may be split across multiple calls. Isn't SAX lovely...