public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
identifier = in.readUTF();
objectType = (ObjectType) in.readObject();
setIndex(-1);
setFieldType(((ClassObjectType) objectType).getClassType());
setValueType(objectType.getValueType());
}
public GlobalExtractor(final String identifier, final ObjectType objectType) {
super(-1, ((ClassObjectType) objectType).getClassType(), objectType.getValueType());
this.identifier = identifier;
this.objectType = objectType;
}