Wow Damien - I like it. Thanks for the tips. On Tue, Dec 21, 2010 at 8:50 AM, Damien Picard <picard.dam...@gmail.com>wrote:
> Thank you for your advices. > > I think I will linearize the tree as a List by replacing the strong > reference link between an Option and its childs to a String meaning the id > (the id is an attribute) of the child options. > > Then, I will serialize the option list to a json String with flexjson and > send it to the client over GWT-RPC. > > On the client, I think that the json String deserialization will be done > quickly ; I've seen on StreamReader source code that the String > deserialisation does not lead to a lot of compute time because the HTTP > response is String itself. Then, I will deserialize this json String with > the eval() method, and I will try to map it to my Option type with a > JavaScript Overlay Types. > > And, if there is a need to split deserialization into multiple deferred > command, I will split my json String into multiple json string before > evaluating this with eval(), and do the eval() on each sub-sequence json > string in a deferred command. Even if this split is not simple... > > What do you think about this solution ? > > > 2010/12/20 David Chandler <drfibona...@google.com> > > Following up on George's post, here's the DeRPC doc. You can find a >> little additional info by searching for "DeRPC" on the public issue >> tracker. DeRPC was created to help with large object graph >> serialization; however, DeRPC (NOT GWT-RPC) will likely be deprecated >> eventually in favor of RequestFactory. >> >> >> http://code.google.com/webtoolkit/doc/latest/DevGuideServerCommunication.html#DevGuideDeRPC >> http://code.google.com/p/google-web-toolkit/issues/list >> >> /dmc >> >> On Sun, Dec 19, 2010 at 3:43 AM, Damien Picard <picard.dam...@gmail.com> >> wrote: >> > Hi, >> > >> > In a few words, I've got a problem with big object deserialization after >> an >> > RPC call. >> > On Internet Explorer, the browser ask me to interrupt the script because >> the >> > deserialization process is too long. >> > >> > In fact, my RPC service returns a deep recursive tree, and some other >> data, >> > where the Item is called Option : >> > >> > The generated FieldSerializer looks like : >> > >> > public static void >> > deserialize(com.google.gwt.user.client.rpc.SerializationStreamReader >> > streamReader, Option instance) throws >> > com.google.gwt.user.client.rpc.SerializationException{ >> > //The childs of this Option node, defining the tree >> > setChildren(instance, (java.util.List) streamReader.readObject()); >> > //Some other atomic data >> > (...) >> > >> > } >> > >> > In my mind, the invocation of setChildren() involves that the childs >> Options >> > are deserialized too. And, because of my tree is too deep, this >> > deserialization process leeds to have a "Would you like to interrupt the >> > script ?" in IE6/7. >> > >> > I think I could resolve this problem by adding a deferred command in >> this >> > process : >> > >> > public static void >> > deserialize(com.google.gwt.user.client.rpc.SerializationStreamReader >> > streamReader, Option instance) throws >> > com.google.gwt.user.client.rpc.SerializationException{ >> > //The childs of this Option node, defining the tree >> > Command c = new Command(){ >> > public void execute(){ >> > setChildren(instance, (java.util.List) >> > streamReader.readObject()); >> > } >> > } >> > DeferredCommand.addPause(); >> > DeferredCommand.addCommand(c); >> > //Some other atomic data >> > (...) >> > >> > } >> > >> > But, to do that, I have to modify the generator of this serializer, and >> i've >> > not found where I can do that. So my questions are : >> > >> > Is it a good idea ? >> > How can I modify /implement my own serializer generator for this tree ? >> > >> > P.S. : Furthermore, I will have to deal with asynchronism because of my >> > deserialize method will returns before my tree will be totaly >> deserialized ; >> > but I will work on this in a second step. >> > >> > Thank you. >> > >> > -- >> > Damien Picard >> > Axeiya Services : http://axeiya.com/ >> > gwt-ckeditor : http://code.google.com/p/gwt-ckeditor/ >> > Mon livre sur GWT : http://axeiya.com/index.php/ouvrage-gwt.html >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "Google Web Toolkit" group. >> > To post to this group, send email to >> google-web-tool...@googlegroups.com. >> > To unsubscribe from this group, send email to >> > google-web-toolkit+unsubscr...@googlegroups.com<google-web-toolkit%2bunsubscr...@googlegroups.com> >> . >> > For more options, visit this group at >> > http://groups.google.com/group/google-web-toolkit?hl=en. >> > >> >> >> >> -- >> David Chandler >> Developer Programs Engineer, Google Web Toolkit >> http://googlewebtoolkit.blogspot.com/ >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google Web Toolkit" group. >> To post to this group, send email to google-web-tool...@googlegroups.com. >> To unsubscribe from this group, send email to >> google-web-toolkit+unsubscr...@googlegroups.com<google-web-toolkit%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/google-web-toolkit?hl=en. >> >> > > > -- > Damien Picard > Axeiya Services : http://axeiya.com/ > gwt-ckeditor : http://code.google.com/p/gwt-ckeditor/ > Mon livre sur GWT : http://axeiya.com/index.php/ouvrage-gwt.html > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To post to this group, send email to google-web-tool...@googlegroups.com. > To unsubscribe from this group, send email to > google-web-toolkit+unsubscr...@googlegroups.com<google-web-toolkit%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > -- -- A. Stevko =========== "If everything seems under control, you're just not going fast enough." M. Andretti -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-tool...@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
