Wicket: ClassCastException with CompoundPropertyModel
2018-07-26
Wicket: ClassCastException with CompoundPropertyModel
Code
public class ReservePage extends BaseLayoutPage {
private Resource selectedResource = null;
private Date dateFrom = null;
private Date dateTo = null;
private String owner = null;
public Date getDateFrom() { return dateFrom; }
public void setDateFrom( Date dateFrom ) { this.dateFrom = dateFrom; }
public Date getDateTo() { return dateTo; }
public void setDateTo( Date dateTo ) { this.dateTo = dateTo; }
public String getOwner() { return owner; }
public void setOwner( String owner ) { this.owner = owner; }
public Resource getSelectedResource() { return selectedResource; }
public void setSelectedResource( Resource selectedResource ) { this.selectedResource = selectedResource; }
public ReservePage( PageParameters params ) {
super( params );
Form form = new Form( "form" );
this.add(form);
// Model.
IModel<List<? extends Resource>> resourceChoices = new AbstractReadOnlyModel<List<? extends Resource>>() {
@Override public List<Resource> getObject() {
return JawaBotApp.getJawaBot().getResourceManager().getResources_SortByName();
}
};
// Resource select.
final DropDownChoice<Resource> resourcesSelect = new DropDownChoice<Resource>("resources",
new PropertyModel<Resource>(this, "selectedResource"), resourceChoices);
form.add( resourcesSelect );
// User.
form.add( new TextField( "owner", new CompoundPropertyModel( this )) );
// Date pickers
PatternDateConverter pdc = WicketApplication.getPatternDateConverterTL().get();
// Errorneous:
// form.add( new DateTextField("dateTo", new PropertyModel<Date>( this, "dateTo" ), pdc ) );
form.add( new DateTextField("dateFrom", new PropertyModel<Date>( this, "dateFrom" ), pdc ) );
form.add( new DateTextField("dateTo", new PropertyModel<Date>( this ), pdc ) );
// Action handling.
Integer fromOffset = params.getInt("fromDateOffset", 0);
Integer toOffset = params.getAsInteger("toDateOffset");
...
Discussion
(12:58:33 AM) OndraZizka: CompoundPropertyModel depends on getters/setters right? (12:58:49 AM) reisi: just like PropertyModel (12:58:50 AM) OndraZizka: not enough to have private field (12:58:58 AM) OndraZizka: ok thx (12:59:20 AM) OndraZizka: When I don't have that, (12:59:25 AM) OndraZizka: wicket throws: (12:59:25 AM) OndraZizka: java.lang.ClassCastException: org.jboss.jawabot.web.pg.ReservePage cannot be cast to java.util.Date (01:00:00 AM) OndraZizka: I'd expect it to complain like "dateFrom" property not found in ...ReservePage
Stacktrace
WicketMessage: Exception in rendering component: [MarkupContainer [Component id = form]] Root cause: java.lang.ClassCastException: org.jboss.jawabot.web.pg.ReservePage cannot be cast to java.util.Date at org.apache.wicket.datetime.DateConverter.convertToString(DateConverter.java:143) at org.apache.wicket.Component.getDefaultModelObjectAsString(Component.java:1770) at org.apache.wicket.Component.getDefaultModelObjectAsString(Component.java:1743) at org.apache.wicket.markup.html.form.FormComponent.getModelValue(FormComponent.java:1377) at org.apache.wicket.markup.html.form.FormComponent.getValue(FormComponent.java:879) at org.apache.wicket.markup.html.form.TextField.onComponentTag(TextField.java:106) at org.apache.wicket.Component.renderComponent(Component.java:2661) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1441) at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1604) at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1528) at org.apache.wicket.markup.html.form.Form.onComponentTagBody(Form.java:2011) at org.apache.wicket.Component.renderComponent(Component.java:2690) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1441) at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1604) at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1528) at org.apache.wicket.Component.renderComponent(Component.java:2690) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.autoAdd(MarkupContainer.java:229) at org.apache.wicket.markup.resolver.MarkupInheritanceResolver.resolve(MarkupInheritanceResolver.java:66) at org.apache.wicket.markup.resolver.ComponentResolvers.resolve(ComponentResolvers.java:81) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1445) at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1604) at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1528) at org.apache.wicket.Component.renderComponent(Component.java:2690) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.autoAdd(MarkupContainer.java:229) at org.apache.wicket.markup.resolver.MarkupInheritanceResolver.resolve(MarkupInheritanceResolver.java:73) at org.apache.wicket.markup.resolver.ComponentResolvers.resolve(ComponentResolvers.java:81) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1445) at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1555) at org.apache.wicket.Page.onRender(Page.java:1594) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.Page.renderPage(Page.java:932) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.respond(BookmarkablePageRequestTarget.java:261) at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1258) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486) at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:138) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Complete stack: org.apache.wicket.WicketRuntimeException: Exception in rendering component: [MarkupContainer [Component id = form]] at org.apache.wicket.Component.renderComponent(Component.java:2729) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1441) at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1604) at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1528) at org.apache.wicket.Component.renderComponent(Component.java:2690) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.autoAdd(MarkupContainer.java:229) at org.apache.wicket.markup.resolver.MarkupInheritanceResolver.resolve(MarkupInheritanceResolver.java:66) at org.apache.wicket.markup.resolver.ComponentResolvers.resolve(ComponentResolvers.java:81) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1445) at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1604) at org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1528) at org.apache.wicket.Component.renderComponent(Component.java:2690) at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1539) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.MarkupContainer.autoAdd(MarkupContainer.java:229) at org.apache.wicket.markup.resolver.MarkupInheritanceResolver.resolve(MarkupInheritanceResolver.java:73) at org.apache.wicket.markup.resolver.ComponentResolvers.resolve(ComponentResolvers.java:81) at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1445) at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1555) at org.apache.wicket.Page.onRender(Page.java:1594) at org.apache.wicket.Component.render(Component.java:2521) at org.apache.wicket.Page.renderPage(Page.java:932) at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.respond(BookmarkablePageRequestTarget.java:261) at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105) at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1258) at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329) at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1436) at org.apache.wicket.RequestCycle.request(RequestCycle.java:545) at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
