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https://issues.apache.org/jira/browse/ISIS-322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13799912#comment-13799912
]
Dan Haywood commented on ISIS-322:
----------------------------------
If running on GAE, then the schema must NOT be created.
Maurizio's patch (attached) boils down to simply honouring the
"datanucleus.autocreateSchema", and suppressing the call (in
DataNucleusApplicationComponents) to create the schema if set to false.
> Allow JDO objectstore to run on the Google App Engine
> -----------------------------------------------------
>
> Key: ISIS-322
> URL: https://issues.apache.org/jira/browse/ISIS-322
> Project: Isis
> Issue Type: New Feature
> Components: Objectstore: JDO
> Affects Versions: objectstore-jdo-1.0.0
> Reporter: Dan Haywood
> Assignee: Dan Haywood
> Fix For: objectstore-jdo-1.2.0
>
> Attachments: DataNucleusApplicationComponents.patch
>
>
> Following info provided by Maurizio Taverna...
> We have (with some provisos) successfully deployed a version of the
> quickstart_wicket_restful_jdo on GAE.
> Below the information collected :
> 1. DataNucleusApplicationComponents.java
> 61:persistenceManagerFactory = JDOHelper.getPersistenceManagerFactory(props);
> replaced with :
> 61:persistenceManagerFactory =
> JDOHelper.getPersistenceManagerFactory("transactions-optional");
> See official Google documentation :
>
> https://developers.google.com/appengine/docs/java/datastore/jdo/overview-dn2#Getting_a_PersistenceManager_Instance
> 66:createSchema(props, classesToBePersisted);
> replace with :
> // 66:createSchema(props, classesToBePersisted);
> This feature is for RDBMS, it raise exception using DN Google implementation.
> 2. PersistenceSession.java
> 894:if (adapter.getVersion() == null) {
> 895: throw new ObjectPersistenceException("Object to be ... " + adapter);
> 896:}
> replaced with:
> 894://if (adapter.getVersion() == null) {
> 895:// throw new ObjectPersistenceException("Object to be ... " +
> adapter);
> 896://}
> We could not understand why the version is null, during the fixture
> installation ( removeAllToDosForCurrentUser ).
> 3. jdoconfig.xml
> The Google App Engine keep the Jdo configuration in
> /WEB-INF/classes/META-INF/jdoconfig.xml.
> We changed :
> <property name="datanucleus.appengine.autoCreateDatastoreTxns"
> value="false"/>
> This is a workaround, more information available here:
> https://developers.google.com/appengine/docs/java/datastore/jdo/overview-dn2#Disabling_Transactions_and_Porting_Existing_JDO_Apps
> With the changes above, the quickstart_wicket_restful_jdo is possible install
> the fixtures and list the items,
> but there are still errors accessing to an item.
> At
> https://docs.google.com/file/d/0B-Ekm92XLvTAcGxHNTJyRDA3bkk/edit?usp=sharing
> please find the zip of the project, including the ant build script , a live
> version is available here: http://isis-gae.appspot.com/.
> In order to run the example you need to install the GAE SDK and point the
> appengine.sdk property
> to the GAE SDK installation path.
> In addition please check in {gae.sdk}lib/tools/orm contains the datanucleos
> 3.1.1 jars. If not remove all the jar files (in default installation I found
> datanucleus 1.5 jars) and replace with jars available in
> {gae.sdk}/lib/opt/user/datanucleus/v2.
> Stack trace obtained when trying to access object:
> Unexpected RuntimeException
> Last cause: null
> WicketMessage: Can't instantiate page using constructor 'public
> org.apache.isis.viewer.wicket.ui.pages.entity.EntityPage(org.apache.wicket.request.mapper.parameter.PageParameters)'
> and argument 'objectOid=[TODO:L_1003], pageType=[ENTITY], pageTitle=[Write
> blog post]'. Might be it doesn't exist, may be it is not visible (public).
> Stacktrace
> Root cause:
> java.lang.NullPointerException
> at
> com.google.appengine.datanucleus.EntityUtils.idToInternalKey(EntityUtils.java:204)
> at
> com.google.appengine.datanucleus.DatastoreIdentityKeyTranslator.getKey(DatastoreIdentityKeyTranslator.java:32)
> at
> org.datanucleus.ObjectManagerImpl.newObjectId(ObjectManagerImpl.java:3439)
> at
> org.datanucleus.api.jdo.JDOPersistenceManager.newObjectIdInstance(JDOPersistenceManager.java:1618)
> at
> org.datanucleus.api.jdo.JDOPersistenceManager.getObjectById(JDOPersistenceManager.java:1740)
> at
> org.apache.isis.objectstore.jdo.datanucleus.DataNucleusObjectStore.loadPojo(DataNucleusObjectStore.java:380)
> at
> org.apache.isis.objectstore.jdo.datanucleus.persistence.adaptermanager.DataNucleusPojoRecreator.recreatePojo(DataNucleusPojoRecreator.java:38)
> at
> org.apache.isis.core.runtime.persistence.adaptermanager.AdapterManagerDefault.adapterFor(AdapterManagerDefault.java:300)
> at
> org.apache.isis.viewer.wicket.model.mementos.ObjectAdapterMemento$Type$2.recreateAdapter(ObjectAdapterMemento.java:104)
> at
> org.apache.isis.viewer.wicket.model.mementos.ObjectAdapterMemento$Type.getAdapter(ObjectAdapterMemento.java:170)
> at
> org.apache.isis.viewer.wicket.model.mementos.ObjectAdapterMemento.getObjectAdapter(ObjectAdapterMemento.java:288)
> at
> org.apache.isis.viewer.wicket.model.models.EntityModel.load(EntityModel.java:193)
> at
> org.apache.isis.viewer.wicket.model.models.EntityModel.load(EntityModel.java:202)
> at
> org.apache.isis.viewer.wicket.model.models.EntityModel.load(EntityModel.java:52)
> at
> org.apache.wicket.model.LoadableDetachableModel.getObject(LoadableDetachableModel.java:121)
> at
> org.apache.isis.viewer.wicket.ui.components.entity.EntityComponentFactoryAbstract.appliesTo(EntityComponentFactoryAbstract.java:55)
> at
> org.apache.isis.viewer.wicket.ui.ComponentFactoryAbstract.appliesTo(ComponentFactoryAbstract.java:61)
> at
> org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault.findComponentFactories(ComponentFactoryRegistryDefault.java:136)
> at
> org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault.findComponentFactory(ComponentFactoryRegistryDefault.java:153)
> at
> org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault.findComponentFactoryElseFailFast(ComponentFactoryRegistryDefault.java:159)
> at
> org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault.createComponent(ComponentFactoryRegistryDefault.java:119)
> at
> org.apache.isis.viewer.wicket.viewer.registries.components.ComponentFactoryRegistryDefault.addOrReplaceComponent(ComponentFactoryRegistryDefault.java:105)
> at
> org.apache.isis.viewer.wicket.ui.pages.PageAbstract.addComponent(PageAbstract.java:201)
> at
> org.apache.isis.viewer.wicket.ui.pages.PageAbstract.addChildComponents(PageAbstract.java:196)
> at
> org.apache.isis.viewer.wicket.ui.pages.entity.EntityPage.<init>(EntityPage.java:50)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:33)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:170)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:98)
> at
> org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:137)
> at
> org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:278)
> at
> org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:166)
> at
> org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:94)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:196)
> at
> org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:165)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:830)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:253)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:281)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:245)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
> at
> org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
> at
> org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
> at
> org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
> at
> org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
> at
> org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
> at
> org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:454)
> at
> com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:461)
> at com.google.tracing.TraceContext.runInContext(TraceContext.java:703)
> at
> com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:338)
> at
> com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:330)
> at
> com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:458)
> at java.lang.Thread.run(Thread.java:679)
> Complete stack:
> org.apache.wicket.WicketRuntimeException: Can't instantiate page using
> constructor 'public
> org.apache.isis.viewer.wicket.ui.pages.entity.EntityPage(org.apache.wicket.request.mapper.parameter.PageParameters)'
> and argument 'objectOid=[TODO:L_1003], pageType=[ENTITY], pageTitle=[Write
> blog post]'. Might be it doesn't exist, may be it is not visible (public).
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:193)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:98)
> at
> org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:137)
> at
> org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:278)
> at
> org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:166)
> at
> org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:94)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:196)
> at
> org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:165)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:830)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:253)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:281)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
> java.lang.reflect.InvocationTargetException
> at
> com.google.appengine.runtime.Request.process-d3177901ba10f473(Request.java)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:33)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:170)
> at
> org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:98)
> at
> org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:137)
> at
> org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:278)
> at
> org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:166)
> at
> org.apache.wicket.request.handler.render.PageRenderer.getPage(PageRenderer.java:78)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:94)
> at
> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:196)
> at
> org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:165)
> at
> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:830)
> at
> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
> at
> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:253)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:210)
> at
> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:281)
> at
> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
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