class DependencyProvider<T> implements Provider<T>, Serializable {
private String typeName;
public final DependencyProvider(Class dependencyType) {
typeName=dependencyType.getName();
}
public T get() {
return
((MyApplication)Application.get()).getDependency(Class.forName(typeName));
}
}
then you can do
final Provider provider=new DependencyProvider(Dao.class);
new Form("foo") { onsubmit() { provider.get().foo(bar); }}
notice that the dependencylocator instance can be serialized without
serializing the dependency iitself... thats the important part.
-igor
On Dec 19, 2007 11:23 PM, mfs <[EMAIL PROTECTED]> wrote:
>
> >the work around is to pass in a locator that can be serialized without
> >serializing the dependency yet knows how to look it up when it is
> >needed. kinda like a serializable lookup. this is what wicket's
> >@SpringBean proxies do. the other option is to have that service
> >available via a static lookup.
>
> Can you give an example of this serializable locator ? where i dont need to
> serialize the dependency..still trying to get as to how would i acheive
> this..
>
> Thanks in advance..
>
>
> -igor
>
>
> >
> >
> > Thanks in advance
> >
> >
> >
> > igor.vaynberg wrote:
> > >
> > > your form anonymous class keeps the ref to your login svc instance
> > >
> > > -igor
> > >
> > > On 12/13/07, mfs <[EMAIL PROTECTED]> wrote:
> > >>
> > >> Ok...so here is the LoginPanel class...with the constructor i was
> > >> referring
> > >> to .. further the implementation for I_LoginService (i.e.
> > >> LoginService...on
> > >> which the serializable error is pointing to) is being passed over from
> > >> the
> > >> caller component...
> > >>
> > >>
> > >> public class LoginPanel extends Panel {
> > >>
> > >> LoginVO loginVO = null;
> > >>
> > >> public LoginPanel(String id, final String targetPage, final
> > >> I_LoginService
> > >> loginServiceHandler) {
> > >> super(id);
> > >> loginVO = new LoginVO();
> > >> setModel(new CompoundPropertyModel(loginVO));
> > >>
> > >> Form loginForm = new Form("loginForm") {
> > >> protected void onSubmit() {
> > >>
> > loginServiceHandler.authenticate(loginVO.getUserName(),
> > >> loginVO.getPassword());
> > >> }
> > >> };
> > >>
> > >> loginForm.add(new RequiredTextField("userName"));
> > >> loginForm.add(new PasswordTextField("password"));
> > >>
> > >> Button loginButton = new Button("loginButton") {
> > >> public void onSubmit() {
> > >> }
> > >> };
> > >>
> > >> loginForm.add(loginButton);
> > >> add(loginForm);
> > >>
> > >> }
> > >>
> > >>
> > >>
> > >> mfs wrote:
> > >> >
> > >> > Guys,
> > >> >
> > >> > Not sure why, but wicket is giving me an error "Field that is not
> > >> > serializable" on one of constructor attributes (of a panel) which is
> > an
> > >> > implementation to an interface...i wonder why is that ? The attribute
> > >> is
> > >> > not used as a model or anything its just a serviceHandler which i am
> > >> > passing to the page-component.
> > >> >
> > >> > Error log
> > >> > ----
> > >> >
> > >> > private final org.xyz.login.api.I_LoginService
> > >> > org.xyz.login.web.LoginPane
> > >> > l$1.val$loginServiceHandler [class=org.xyz.service.LoginService]
> > <-----
> > >> > field that is
> > >> > not serializable
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:347)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:393)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:393)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.checkFields(SerializableChecker.java:615)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:538)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.SerializableChecker.writeObjectOverride(SerializableChecker.jav
> > >> > a:683)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.IObjectStreamFactory$1.writeObjectOverride(IObjectStreamFactory
> > >> > .java:74)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.lang.Objects.objectToByteArray(Objects.java:1103)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.protocol.http.pagestore.AbstractPageStore.serializePage(AbstractPageSto
> > >> > re.java:200)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.protocol.http.pagestore.DiskPageStore.storePage(DiskPageStore.java:700)
> > >> >
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.put(
> > >> > SecondLevelCacheSessionStore.java:340)
> > >> > at
> > org.apache.wicket.Session.requestDetached(Session.java:1412)
> > >> > at
> > org.apache.wicket.RequestCycle.detach(RequestCycle.java:957)
> > >> > at
> > org.apache.wicket.RequestCycle.steps(RequestCycle.java:1195)
> > >> > at
> > >> org.apache.wicket.RequestCycle.request(RequestCycle.java:500)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:261)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:126)
> > >> > at
> > javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
> > >> > at
> > javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.j
> > >> > ava:290)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> > >> >
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:209)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> > >> > at
> > >> >
> > >>
> > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
> > >> > at
> > >> >
> > >>
> > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> > >> > at
> > >> >
> > >>
> > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.ja
> > >> > va:581)
> > >> > at
> > >> >
> > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> > >> > at java.lang.Thread.run(Thread.java:595)
> > >> > Caused by: java.io.NotSerializableException:
> > >> > taxcient.registration.service.LoginService
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> > >> > at
> > >> >
> > >>
> > java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> > >> > at
> > >> > java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
> > >> > at
> > >> >
> > >>
> > org.apache.wicket.util.io.IObjectStreamFactory$1.writeObjectOverride(IObjectStreamFactory
> > >> >
> > >>
> > >> --
> > >> View this message in context:
> > >>
> > http://www.nabble.com/Getting-Error-%22Field-not-serializable%22-on-one-of-the-constructor-attrib---tp14327323p14328035.html
> > >> Sent from the Wicket - User mailing list archive at Nabble.com.
> > >>
> > >>
> > >> ---------------------------------------------------------------------
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> > >> For additional commands, e-mail: [EMAIL PROTECTED]
> > >>
> > >>
> > >
> > > ---------------------------------------------------------------------
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> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> > >
> > >
> >
> > --
> > View this message in context:
> > http://www.nabble.com/Getting-Error-%22Field-not-serializable%22-on-one-of-the-constructor-attrib---tp14327323p14339719.html
> >
> > Sent from the Wicket - User mailing list archive at Nabble.com.
> >
> >
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> >
> >
>
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>
>
>
> --
> View this message in context:
> http://www.nabble.com/Getting-Error-%22Field-not-serializable%22-on-one-of-the-constructor-attrib---tp14327323p14431890.html
>
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>
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