Hi Saqib,
Try this:
@Persistent(serialized = "true")
Stephen
On Aug 8, 2:52 pm, Saqib Ali <docbook....@gmail.com> wrote:
> I have an object defined Serializable as follows:
>
> public class comment implements Serializable {
> /**
> *
> */
> private static final long serialVersionUID = 1L;
> private String commentText;
> private String commenterFedID;
>
> public comment (){
> this.commentText = "";
> this.commenterFedID = "";
> }
>
> public comment (String commentText, String commenterFedID){
> this.commentText = commentText;
> this.commenterFedID = commenterFedID;
> }
>
> public String getCommentText() {
> return commentText;
> }
>
> public String getCommenterFedID() {
> return commenterFedID;
> }
>
> }
>
> I am using this serialized object in a Data Class as follows:
>
> @Persistent
> private ArrayList<comment> comments = new ArrayList<comment>();
>
> But it generates the following exception:
>
> java.lang.IllegalArgumentException: comments: testapp.comment is not a
> supported property type.
> at
> com.google.appengine.api.datastore.DataTypeUtils.checkSupportedSingleValue(DataTypeUtils.java:
> 184)
> at
> com.google.appengine.api.datastore.DataTypeUtils.checkSupportedValue(DataTypeUtils.java:
> 149)
> at
> com.google.appengine.api.datastore.DataTypeUtils.checkSupportedValue(DataTypeUtils.java:
> 123)
> at com.google.appengine.api.datastore.Entity.setProperty(Entity.java:
> 280)
> at
> org.datanucleus.store.appengine.DatastoreFieldManager.storeObjectField(DatastoreFieldManager.java:
> 843)
> at
> org.datanucleus.state.AbstractStateManager.providedObjectField(AbstractStateManager.java:
> 1037)
> at testapp.idea.jdoProvideField(idea.java)
> at testapp.idea.jdoProvideFields(idea.java)
> at
> org.datanucleus.state.JDOStateManagerImpl.provideFields(JDOStateManagerImpl.java:
> 2715)
> at
> org.datanucleus.store.appengine.DatastorePersistenceHandler.updateObject(DatastorePersistenceHandler.java:
> 534)
> at
> org.datanucleus.state.JDOStateManagerImpl.flush(JDOStateManagerImpl.java:
> 4576)
> at
> org.datanucleus.ObjectManagerImpl.flushInternal(ObjectManagerImpl.java:
> 2814)
> at org.datanucleus.ObjectManagerImpl.flush(ObjectManagerImpl.java:
> 2754)
> at org.datanucleus.ObjectManagerImpl.preCommit(ObjectManagerImpl.java:
> 2893)
> at
> org.datanucleus.TransactionImpl.internalPreCommit(TransactionImpl.java:
> 369)
> at org.datanucleus.TransactionImpl.commit(TransactionImpl.java:256)
> at org.datanucleus.ObjectManagerImpl.close(ObjectManagerImpl.java:
> 801)
> at
> org.datanucleus.jdo.JDOPersistenceManager.close(JDOPersistenceManager.java:
> 271)
> at testapp.saveComment.doGet(saveComment.java:43)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 511)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1166)
> at
> com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:
> 97)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:
> 35)
> at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:
> 43)
> 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
> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:
> 238)
> 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
> $RequestHandler.headerComplete(HttpConnection.java:923)
> at
> com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:
> 76)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
> 135)
> at
> com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
> 250)
> at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:7115)
> at com.google.apphosting.base.RuntimePb$EvaluationRuntime
> $6.handleBlockingRequest(RuntimePb.java:7113)
> at
> com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:
> 24)
> at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
> 398)
> at com.google.net.rpc.impl.Server$2.run(Server.java:852)
> at
> com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:
> 56)
> at
> com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:
> 576)
> at com.google.net.rpc.impl.Server.startRpc(Server.java:807)
> at com.google.net.rpc.impl.Server.processRequest(Server.java:369)
> at
> com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:
> 442)
> at
> com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:
> 319)
> at
> com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:
> 290)
> at com.google.net.async.Connection.handleReadEvent(Connection.java:
> 474)
> at
> com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:
> 831)
> at
> com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:
> 207)
> at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
> 103)
> at
> com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:
> 251)
> at com.google.apphosting.runtime.JavaRuntime
> $RpcRunnable.run(JavaRuntime.java:417)
> at java.lang.Thread.run(Unknown Source)
>
> Any thoughts on what could be causing this?
>
> Saqib
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