Major Description
Create a repository that inherits from a "generic" one, which implements a "generic" function like this:
public abstract class MyAbstractDomainObjectRepositoryAndFactory<DO extends MyAbstractDomainObject> extends AbstractFactoryAndRepository { public List<DO> listAll() { return this.allInstances(this.domainObjectClass); } ... }
Create a concrete implementation of the previous repository like this one, which introduces a new action/method:
public class DomainEntityClassCustomRepository extends AbstractMultiTenantEntityRepositoryAndFactory<DomainEntityClass> { ... public List<RiskRegister> listAllRiskRegisters() { return this.listAll(); } ... }
And:
DomainEntityClass inherits from MyAbstractDomainObject.
If the "listAllRiskRegisters" action is invoked from the Wicket viewer it works perfectly, and a list of DomainEntityClass'es is shown.
And if the list only contains 1 element, the "listAll" action also shows that element.
But if the "listAll" action is invoked and the list contains more than 1 element the following exception is thrown:
org.apache.wicket.WicketRuntimeException Can't instantiate page using constructor 'public org.apache.isis.viewer.wicket.ui.pages.action.ActionPage(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument 'pageType=[ACTION], actionSingleResultsMode=[REDIRECT], objectOid=[com.company.DomainEntityClassCustomRepository:1], actionType=[USER], actionOwningSpec=[com.company.DomainEntityClassCustomRepository], actionId=[listAll()], pageTitle=[List All], actionMode=[RESULTS]'. Might be it doesn't exist, may be it is not visible (public). org.apache.wicket.session.DefaultPageFactory#newPage(DefaultPageFactory.java:193) org.apache.wicket.session.DefaultPageFactory#newPage(DefaultPageFactory.java:98) org.apache.wicket.DefaultMapperContext#newPageInstance(DefaultMapperContext.java:137) org.apache.wicket.core.request.handler.PageProvider#resolvePageInstance(PageProvider.java:268) org.apache.wicket.core.request.handler.PageProvider#getPageInstance(PageProvider.java:166) org.apache.wicket.request.handler.render.PageRenderer#getPage(PageRenderer.java:78) org.apache.wicket.request.handler.render.WebPageRenderer#renderPage(WebPageRenderer.java:94) org.apache.wicket.request.handler.render.WebPageRenderer#respond(WebPageRenderer.java:196) org.apache.wicket.core.request.handler.RenderPageRequestHandler#respond(RenderPageRequestHandler.java:165) org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor#respond(RequestCycle.java:854) org.apache.wicket.request.RequestHandlerStack#execute(RequestHandlerStack.java:64) org.apache.wicket.request.cycle.RequestCycle#execute(RequestCycle.java:254) org.apache.wicket.request.cycle.RequestCycle#processRequest(RequestCycle.java:211) org.apache.wicket.request.cycle.RequestCycle#processRequestAndDetach(RequestCycle.java:282) org.apache.wicket.protocol.http.WicketFilter#processRequestCycle(WicketFilter.java:259) org.apache.wicket.protocol.http.WicketFilter#processRequest(WicketFilter.java:201) org.apache.wicket.protocol.http.WicketFilter#doFilter(WicketFilter.java:282) org.eclipse.jetty.servlet.ServletHandler$CachedChain#doFilter(ServletHandler.java:1326) org.apache.shiro.web.servlet.AbstractShiroFilter#executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1#call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable#doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable#call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject#execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter#doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter#doFilter(OncePerRequestFilter.java:125) org.eclipse.jetty.servlet.ServletHandler$CachedChain#doFilter(ServletHandler.java:1326) org.eclipse.jetty.servlet.ServletHandler#doHandle(ServletHandler.java:479) org.eclipse.jetty.server.handler.ScopedHandler#handle(ScopedHandler.java:119) org.eclipse.jetty.security.SecurityHandler#handle(SecurityHandler.java:520) org.eclipse.jetty.server.session.SessionHandler#doHandle(SessionHandler.java:227) org.eclipse.jetty.server.handler.ContextHandler#doHandle(ContextHandler.java:940) org.eclipse.jetty.servlet.ServletHandler#doScope(ServletHandler.java:409) org.eclipse.jetty.server.session.SessionHandler#doScope(SessionHandler.java:186) org.eclipse.jetty.server.handler.ContextHandler#doScope(ContextHandler.java:874) org.eclipse.jetty.server.handler.ScopedHandler#handle(ScopedHandler.java:117) org.eclipse.jetty.server.handler.ContextHandlerCollection#handle(ContextHandlerCollection.java:250) org.eclipse.jetty.server.handler.HandlerCollection#handle(HandlerCollection.java:149) org.eclipse.jetty.server.handler.HandlerWrapper#handle(HandlerWrapper.java:110) org.eclipse.jetty.server.Server#handle(Server.java:349) org.eclipse.jetty.server.HttpConnection#handleRequest(HttpConnection.java:441) org.eclipse.jetty.server.HttpConnection$RequestHandler#headerComplete(HttpConnection.java:904) org.eclipse.jetty.http.HttpParser#parseNext(HttpParser.java:565) org.eclipse.jetty.http.HttpParser#parseAvailable(HttpParser.java:217) org.eclipse.jetty.server.AsyncHttpConnection#handle(AsyncHttpConnection.java:46) org.eclipse.jetty.io.nio.SelectChannelEndPoint#handle(SelectChannelEndPoint.java:545) org.eclipse.jetty.io.nio.SelectChannelEndPoint$1#run(SelectChannelEndPoint.java:43) org.eclipse.jetty.util.thread.QueuedThreadPool#runJob(QueuedThreadPool.java:598) org.eclipse.jetty.util.thread.QueuedThreadPool$3#run(QueuedThreadPool.java:533) java.lang.Thread#run(Thread.java:680) java.lang.reflect.InvocationTargetException sun.reflect.NativeConstructorAccessorImpl#newInstance0(NativeConstructorAccessorImpl.java:-2) sun.reflect.NativeConstructorAccessorImpl#newInstance(NativeConstructorAccessorImpl.java:39) sun.reflect.DelegatingConstructorAccessorImpl#newInstance(DelegatingConstructorAccessorImpl.java:27) java.lang.reflect.Constructor#newInstance(Constructor.java:513) org.apache.wicket.session.DefaultPageFactory#newPage(DefaultPageFactory.java:170) org.apache.wicket.session.DefaultPageFactory#newPage(DefaultPageFactory.java:98) org.apache.wicket.DefaultMapperContext#newPageInstance(DefaultMapperContext.java:137) org.apache.wicket.core.request.handler.PageProvider#resolvePageInstance(PageProvider.java:268) org.apache.wicket.core.request.handler.PageProvider#getPageInstance(PageProvider.java:166) org.apache.wicket.request.handler.render.PageRenderer#getPage(PageRenderer.java:78) org.apache.wicket.request.handler.render.WebPageRenderer#renderPage(WebPageRenderer.java:94) org.apache.wicket.request.handler.render.WebPageRenderer#respond(WebPageRenderer.java:196) org.apache.wicket.core.request.handler.RenderPageRequestHandler#respond(RenderPageRequestHandler.java:165) org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor#respond(RequestCycle.java:854) org.apache.wicket.request.RequestHandlerStack#execute(RequestHandlerStack.java:64) org.apache.wicket.request.cycle.RequestCycle#execute(RequestCycle.java:254) org.apache.wicket.request.cycle.RequestCycle#processRequest(RequestCycle.java:211) org.apache.wicket.request.cycle.RequestCycle#processRequestAndDetach(RequestCycle.java:282) org.apache.wicket.protocol.http.WicketFilter#processRequestCycle(WicketFilter.java:259) org.apache.wicket.protocol.http.WicketFilter#processRequest(WicketFilter.java:201) org.apache.wicket.protocol.http.WicketFilter#doFilter(WicketFilter.java:282) org.eclipse.jetty.servlet.ServletHandler$CachedChain#doFilter(ServletHandler.java:1326) org.apache.shiro.web.servlet.AbstractShiroFilter#executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1#call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable#doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable#call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject#execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter#doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter#doFilter(OncePerRequestFilter.java:125) org.eclipse.jetty.servlet.ServletHandler$CachedChain#doFilter(ServletHandler.java:1326) org.eclipse.jetty.servlet.ServletHandler#doHandle(ServletHandler.java:479) org.eclipse.jetty.server.handler.ScopedHandler#handle(ScopedHandler.java:119) org.eclipse.jetty.security.SecurityHandler#handle(SecurityHandler.java:520) org.eclipse.jetty.server.session.SessionHandler#doHandle(SessionHandler.java:227) org.eclipse.jetty.server.handler.ContextHandler#doHandle(ContextHandler.java:940) org.eclipse.jetty.servlet.ServletHandler#doScope(ServletHandler.java:409) org.eclipse.jetty.server.session.SessionHandler#doScope(SessionHandler.java:186) org.eclipse.jetty.server.handler.ContextHandler#doScope(ContextHandler.java:874) org.eclipse.jetty.server.handler.ScopedHandler#handle(ScopedHandler.java:117) org.eclipse.jetty.server.handler.ContextHandlerCollection#handle(ContextHandlerCollection.java:250) org.eclipse.jetty.server.handler.HandlerCollection#handle(HandlerCollection.java:149) org.eclipse.jetty.server.handler.HandlerWrapper#handle(HandlerWrapper.java:110) org.eclipse.jetty.server.Server#handle(Server.java:349) org.eclipse.jetty.server.HttpConnection#handleRequest(HttpConnection.java:441) org.eclipse.jetty.server.HttpConnection$RequestHandler#headerComplete(HttpConnection.java:904) org.eclipse.jetty.http.HttpParser#parseNext(HttpParser.java:565) org.eclipse.jetty.http.HttpParser#parseAvailable(HttpParser.java:217) org.eclipse.jetty.server.AsyncHttpConnection#handle(AsyncHttpConnection.java:46) org.eclipse.jetty.io.nio.SelectChannelEndPoint#handle(SelectChannelEndPoint.java:545) org.eclipse.jetty.io.nio.SelectChannelEndPoint$1#run(SelectChannelEndPoint.java:43) org.eclipse.jetty.util.thread.QueuedThreadPool#runJob(QueuedThreadPool.java:598) org.eclipse.jetty.util.thread.QueuedThreadPool$3#run(QueuedThreadPool.java:533) java.lang.Thread#run(Thread.java:680) java.lang.NullPointerException org.apache.isis.viewer.wicket.model.models.EntityCollectionModel#createStandalone(EntityCollectionModel.java:152) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanel$ResultType$2#addOrReplaceCollectionResultsPanel(ActionPanel.java:361) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanel$ResultType$2#addResults(ActionPanel.java:357) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanel#executeActionOnTargetAndProcessResults(ActionPanel.java:186) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanel#executeActionAndProcessResults(ActionPanel.java:138) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanel#buildGui(ActionPanel.java:96) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanel#<init>(ActionPanel.java:89) org.apache.isis.viewer.wicket.ui.components.actions.ActionPanelFactory#createComponent(ActionPanelFactory.java:49) org.apache.isis.viewer.wicket.ui.ComponentFactoryAbstract#createComponent(ComponentFactoryAbstract.java:82) org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault#createComponent(ComponentFactoryRegistryDefault.java:120) org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault#addOrReplaceComponent(ComponentFactoryRegistryDefault.java:105) org.apache.isis.viewer.wicket.ui.pages.PageAbstract#addComponent(PageAbstract.java:266) org.apache.isis.viewer.wicket.ui.pages.PageAbstract#addChildComponents(PageAbstract.java:261) org.apache.isis.viewer.wicket.ui.pages.action.ActionPage#<init>(ActionPage.java:54) sun.reflect.NativeConstructorAccessorImpl#newInstance0(NativeConstructorAccessorImpl.java:-2) sun.reflect.NativeConstructorAccessorImpl#newInstance(NativeConstructorAccessorImpl.java:39) sun.reflect.DelegatingConstructorAccessorImpl#newInstance(DelegatingConstructorAccessorImpl.java:27) java.lang.reflect.Constructor#newInstance(Constructor.java:513) org.apache.wicket.session.DefaultPageFactory#newPage(DefaultPageFactory.java:170) org.apache.wicket.session.DefaultPageFactory#newPage(DefaultPageFactory.java:98) org.apache.wicket.DefaultMapperContext#newPageInstance(DefaultMapperContext.java:137) org.apache.wicket.core.request.handler.PageProvider#resolvePageInstance(PageProvider.java:268) org.apache.wicket.core.request.handler.PageProvider#getPageInstance(PageProvider.java:166) org.apache.wicket.request.handler.render.PageRenderer#getPage(PageRenderer.java:78) org.apache.wicket.request.handler.render.WebPageRenderer#renderPage(WebPageRenderer.java:94) org.apache.wicket.request.handler.render.WebPageRenderer#respond(WebPageRenderer.java:196) org.apache.wicket.core.request.handler.RenderPageRequestHandler#respond(RenderPageRequestHandler.java:165) org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor#respond(RequestCycle.java:854) org.apache.wicket.request.RequestHandlerStack#execute(RequestHandlerStack.java:64) org.apache.wicket.request.cycle.RequestCycle#execute(RequestCycle.java:254) org.apache.wicket.request.cycle.RequestCycle#processRequest(RequestCycle.java:211) org.apache.wicket.request.cycle.RequestCycle#processRequestAndDetach(RequestCycle.java:282) org.apache.wicket.protocol.http.WicketFilter#processRequestCycle(WicketFilter.java:259) org.apache.wicket.protocol.http.WicketFilter#processRequest(WicketFilter.java:201) org.apache.wicket.protocol.http.WicketFilter#doFilter(WicketFilter.java:282) org.eclipse.jetty.servlet.ServletHandler$CachedChain#doFilter(ServletHandler.java:1326) org.apache.shiro.web.servlet.AbstractShiroFilter#executeChain(AbstractShiroFilter.java:449) org.apache.shiro.web.servlet.AbstractShiroFilter$1#call(AbstractShiroFilter.java:365) org.apache.shiro.subject.support.SubjectCallable#doCall(SubjectCallable.java:90) org.apache.shiro.subject.support.SubjectCallable#call(SubjectCallable.java:83) org.apache.shiro.subject.support.DelegatingSubject#execute(DelegatingSubject.java:383) org.apache.shiro.web.servlet.AbstractShiroFilter#doFilterInternal(AbstractShiroFilter.java:362) org.apache.shiro.web.servlet.OncePerRequestFilter#doFilter(OncePerRequestFilter.java:125) org.eclipse.jetty.servlet.ServletHandler$CachedChain#doFilter(ServletHandler.java:1326) org.eclipse.jetty.servlet.ServletHandler#doHandle(ServletHandler.java:479) org.eclipse.jetty.server.handler.ScopedHandler#handle(ScopedHandler.java:119) org.eclipse.jetty.security.SecurityHandler#handle(SecurityHandler.java:520) org.eclipse.jetty.server.session.SessionHandler#doHandle(SessionHandler.java:227) org.eclipse.jetty.server.handler.ContextHandler#doHandle(ContextHandler.java:940) org.eclipse.jetty.servlet.ServletHandler#doScope(ServletHandler.java:409) org.eclipse.jetty.server.session.SessionHandler#doScope(SessionHandler.java:186) org.eclipse.jetty.server.handler.ContextHandler#doScope(ContextHandler.java:874) org.eclipse.jetty.server.handler.ScopedHandler#handle(ScopedHandler.java:117) org.eclipse.jetty.server.handler.ContextHandlerCollection#handle(ContextHandlerCollection.java:250) org.eclipse.jetty.server.handler.HandlerCollection#handle(HandlerCollection.java:149) org.eclipse.jetty.server.handler.HandlerWrapper#handle(HandlerWrapper.java:110) org.eclipse.jetty.server.Server#handle(Server.java:349) org.eclipse.jetty.server.HttpConnection#handleRequest(HttpConnection.java:441) org.eclipse.jetty.server.HttpConnection$RequestHandler#headerComplete(HttpConnection.java:904) org.eclipse.jetty.http.HttpParser#parseNext(HttpParser.java:565) org.eclipse.jetty.http.HttpParser#parseAvailable(HttpParser.java:217) org.eclipse.jetty.server.AsyncHttpConnection#handle(AsyncHttpConnection.java:46) org.eclipse.jetty.io.nio.SelectChannelEndPoint#handle(SelectChannelEndPoint.java:545) org.eclipse.jetty.io.nio.SelectChannelEndPoint$1#run(SelectChannelEndPoint.java:43) org.eclipse.jetty.util.thread.QueuedThreadPool#runJob(QueuedThreadPool.java:598) org.eclipse.jetty.util.thread.QueuedThreadPool$3#run(QueuedThreadPool.java:533) java.lang.Thread#run(Thread.java:680)
So it seems that Isis is not properly recognizing the type enclosed on the List represented by <DO>.