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);
}
}
);
}
}
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