Hi Uwe, by default Castor calls entity.getList().add() for every element of the list at unmarshaling. Does this match your observation.
You can change this default behaviour by specifing get-/set-methods at field element. This is described at: http://castor.codehaus.org/reference/html/XML%20data%20binding.html#xml.mapping.mappingfile.field Regards Ralf Am 18.05.2011 14:56, schrieb Uwe: > > > Hi, > > I have a problem with castors xml mapping. > > > Starting point is a class with two private members: a list and a map. > > The setter for the list constructs the map from data > from the list. The mapping file describes that only the list is > mapped to xml. > > I construct an instance and use the setter for setting a > list with three strings. This works fine. > > After serialization and deserialization the list with 3 strings > is full available, but for the map only 1 instead of 3 > entries is built. The generated xml looks fine. > Logging the setter I get that it is called with a list with > one element ! > > So: why is the setter only called with a list with one instance ? > But: why is the list field ok after deserialisation ? > > I put the code and logging below this mail. I hope this is not > to lengthy, I tried to reduce it as far as possible. > > > Regards, Uwe > > +++ stdout with comments > ++++++++++++++++++++++++++++++++++++++++++++++++ > > > when constructing: > > default cons called > setLi called with list of length 3 > > > objects state after constructing. the left column > comes from the list, the right column from the map > > zero: 0 > one: 1 > two: 2 > > > generated xml is: > > <?xml version="1.0" encoding="UTF-8"?> > <reproduce-strange-castor-behaviour> > <li>zero</li> > <li>one</li> > <li>two</li> > </reproduce-strange-castor-behaviour> > > > during deserialisation: > > default cons called > setLi called with list of length 1 > > > objects state after deserialisation. the left column > comes from the list, the right column from the map: > > zero: 0 > one: null > two: null > > > +++ code +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > package sandbox; > > import java.io.StringReader; > import java.io.StringWriter; > import java.util.ArrayList; > import java.util.HashMap; > import java.util.List; > import java.util.Map; > > import org.exolab.castor.mapping.Mapping; > import org.exolab.castor.xml.Marshaller; > import org.exolab.castor.xml.XMLContext; > > public class ReproduceStrangeCastorBehaviour { > > private ArrayList<String> li; > private Map<String, Integer> ma; > > public ReproduceStrangeCastorBehaviour() { > System.out.println("default cons called"); > } > > public List<String> getLi() { > return li; > } > > public void setLi(ArrayList<String> li) { > System.out.println("setLi called with list of length > "+li.size()); > this.li = li; > > // construct map > this.ma = new HashMap<String, Integer>(); > for (int i = 0; i < li.size(); ++i) > this.ma.put(li.get(i), i); > > } > > public void print() { > for (String l : this.li) { > System.out.println(l + ": " + this.ma.get(l)); > } > > } > > private static String toXML(Object o, XMLContext context) throws > Exception { > Marshaller ms = context.createMarshaller(); > StringWriter sw = new StringWriter(); > ms.setWriter(sw); > ms.marshal(o); > return sw.toString(); > } > > private static Object fromXML(String xml, XMLContext context) throws > Exception { > return context.createUnmarshaller().unmarshal(new > StringReader(xml)); > } > > public static void main(String[] args) throws Exception { > > // construct object rp > ReproduceStrangeCastorBehaviour rp = new > ReproduceStrangeCastorBehaviour(); > > ArrayList<String> li = new ArrayList<String>(); > li.add("zero"); > li.add("one"); > li.add("two"); > rp.setLi(li); > > // state of rp > rp.print(); > > // serialisation + deserialisation > Mapping m = new Mapping(); > m.loadMapping("castor_mappings/reproduce_strange_behavior.xml"); > XMLContext context = new XMLContext(); > context.addMapping(m); > String xml = toXML(rp, context); > System.out.println(xml); > rp = (ReproduceStrangeCastorBehaviour) fromXML(xml, context); > > // state of rp > rp.print(); > } > } > > +++ mapping +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > <mapping> > <class name="sandbox.ReproduceStrangeCastorBehaviour"> > <field name="li" type="string" collection="arraylist" /> > </class> > </mapping> > > -- Syscon Ingenieurbüro für Meß- und Datentechnik GmbH Ralf Joachim Raiffeisenstraße 11 72127 Kusterdingen Germany Tel. +49 7071 3690 52 Mobil: +49 173 9630135 Fax +49 7071 3690 98 Internet: www.syscon.eu E-Mail: [email protected] Sitz der Gesellschaft: D-72127 Kusterdingen Registereintrag: Amtsgericht Stuttgart, HRB 382295 Geschäftsleitung: Jens Joachim, Ralf Joachim --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email
