Hey folks, thank you for your help. I got it fixed. I missed to implement a zero-argument constructor in Kontakt... Damn... im so blind! But sometimes you need to have a night to rethink on it again.
Okay, but there´s one new question. In my database (dont know why it was designed this way) the date is splitted into three integer-columns: day, month, year. Okay, for my comparison i need to transform this into a Date-Object. But this does not work, if im using the DateTimeFormat-Class of GWT. It uses GWT.Create() in his code, what´s prohibeted on server-side code, so that this error occurs: Caused by: java.lang.UnsupportedOperationException: ERROR: GWT.create() is only usable in client code! It cannot be called, for example, from server code. If you are running a unit test, check that your test case extends GWTTestCase and that GWT.create() is not called from within an initializer or constructor.[...] I use this Domain-Construtor for this: public Domain(String adresse, String tld, int tag, int monat, int jahr, Kontakt kontakt) { DateTimeFormat fmt = DateTimeFormat.getFormat("dd.MM.yyy"); this.setRegistrar(new Kontakt("Keine Angabe")); this.adresse=adresse; this.tld=tld; this.owner=kontakt; this.next=fmt.parse((tag+"."+monat+"."+jahr)); return; } Do you may have an idea, how it could work? Thank you for your recent help! johannes p.s.: greetings from germany.I hope my English is not as bad as I think. :P On 31 Mrz., 20:46, Katharina Probst <kpro...@google.com> wrote: > I think it's fine to have constructors with arguments (so long as you also > have a zero-argument constructor), but, yes, Kontakt needs to be > serializable too. > > kathrin > > On Wed, Mar 31, 2010 at 2:41 PM, Sean <slough...@gmail.com> wrote: > > Don't have a constructor with arguments, only use Set/Gets. > > > What's a Kontakt? Is that serializable? > > > Fix the constructor and verify Kontakt is serializable and it should > > work. > > > On Mar 31, 10:43 am, Johannes Stein <johannes.st...@googlemail.com> > > wrote: > > > Hey, > > > > ive got a problem and im searching for hours to find a solution. > > > My problem is the following: > > > > I have a little RPC-Service which returns as a result a "Domain"- > > > Object (Own custom-class). > > > But this Domain-Object could not be serialized, though i have made > > > this "Domain"-class serializable with > > > com.google.gwt.user.client.rpc.IsSerializable. > > > > Im using GWT SDK 2.01 and getting the following compiling error: > > > > [ERROR] com.google.gwt.core.client.JavaScriptObject is not assignable > > > to 'com.google.gwt.user.client.rpc.IsSerializable' or > > > 'java.io.Serializable' nor does it have a custom field serializer > > > (reached via com.vostokdomains.kis.client.objetcs.Domain) > > > > [ERROR] com.google.gwt.core.client.JavaScriptObject has no available > > > instantiable subtypes. (reached via > > > com.vostokdomains.kis.client.objetcs.Domain) > > > > I hope you can help me out!! > > > -------------------------------------------- > > > Enclosed some code-snippets: > > > > package com.vostokdomains.kis.client.objetcs; > > > > import java.util.Date; > > > > import com.google.gwt.i18n.client.DateTimeFormat; > > > import com.google.gwt.user.client.rpc.IsSerializable; > > > > ========== Domain-Object============ > > > > public class Domain implements Comparable<Domain>, IsSerializable{ > > > > private String adresse; > > > private String tld; > > > private Date create; > > > private Date next; > > > private int laufzeit; > > > private double preis; > > > > private Kontakt registrar; > > > private Kontakt admin; > > > private Kontakt tech; > > > private Kontakt owner; > > > > private String namesever1; > > > private String nameserver2; > > > private String records; > > > > Domain(){ > > > > } > > > > public Domain(String adresse, String tld, int tag, int monat, int > > > jahr, Kontakt kontakt) { > > > > DateTimeFormat fmt = > > DateTimeFormat.getFormat("dd.MM.yyy"); > > > > this.setRegistrar(new Kontakt("Keine Angabe")); > > > this.adresse=adresse; > > > this.tld=tld; > > > this.owner=kontakt; > > > this.next=fmt.parse((tag+"."+monat+"."+jahr)); > > > > return; > > > > } > > > > public Domain(String adresse, String tld, Kontakt kontakt){ > > > this.setRegistrar(new Kontakt("Keine Angabe")); > > > this.adresse=adresse; > > > this.tld=tld; > > > this.owner=kontakt; > > > this.next=new Date(); > > > } > > > > [....] > > > > ================= DatabaseService ==================== > > > > public class DatabaseServiceImpl extends RemoteServiceServlet > > > implements > > > DatabaseService { > > > > /** > > > * > > > */ > > > private static final long serialVersionUID = 1L; > > > > public Domain getDomains() { > > > > DBConnection conn = new DBConnection(); > > > conn.connect(); > > > Connection dbconn = conn.getConnection(); > > > System.out.print("TEST"); > > > Domain d = null; > > > > try { > > > ResultSet rs = null; > > > Statement stm = dbconn.createStatement(); > > > System.out.print("STATEMENT"); > > > stm.execute("SELECT * FROM domains"); > > > rs = stm.getResultSet(); > > > > rs.next() ; > > > Kontakt k = new Kontakt(rs.getString(2)); > > > d = new Domain(rs.getString(3), "tld", > > k); > > > > } catch (SQLException e) { > > > // TODO Auto-generated catch block > > > e.printStackTrace(); > > > } > > > return d; > > > > } > > > > } > > > > ======================== RPC Call ======================== > > > > public class Kis implements EntryPoint { > > > > @Override > > > public void onModuleLoad() { > > > > DatabaseServiceAsync rpc; > > > rpc = (DatabaseServiceAsync) > > GWT.create(DatabaseService.class); > > > ServiceDefTarget target = (ServiceDefTarget) rpc; > > > String moduleRelativeURL = GWT.getModuleBaseURL() + > > > "DatabaseServiceImpl"; > > > target.setServiceEntryPoint(moduleRelativeURL); > > > /* > > > test.add(); > > > RootPanel.get().add(test.vpanel);*/ > > > > rpc.getDomains(new AsyncCallback<Domain>() { > > > > public void onFailure(Throwable caught) { > > > > Window.alert("Übertragung fehlgeschlagen!" ); > > > } > > > > public void onSuccess(Domain rs) { > > > > //Expiration ex = new Expiration(); > > > //ex.create(rs,0); > > > System.out.print(rs.getAdresse()); > > > //RootPanel.get().add(ex.vpanel); > > > > } > > > } > > > ); > > > > } > > > > } > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google Web Toolkit" group. > > To post to this group, send email to google-web-tool...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-web-toolkit+unsubscr...@googlegroups.com<google-web-toolkit%2bunsubscr...@googlegroups.com> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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