I've never done that, Arul, but I believe displaying a PDF in GWT is straight forward using a Frame widget (that could be the contents of a pop-up) *providing* the user has a PDF viewer plug-in installed in their browser. I would read what Martin and Reinier have to say about it in this post:
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/24cbd4eec073b299/201825304c1075dc?lnk=gst&q=displlay+PDF#201825304c1075dc regards gregor On Dec 18, 3:06 pm, Arul <arulmanikandan.sriniva...@gmail.com> wrote: > Hi Gregor, > I am happy to see your reply and wish to thank for it. > 1)Yes , as you mentined the same warning only I am getting, so I am > ignoring it. > 2) Thanks for your suggestion for not modifying existing DAO. > > One Important Clarification I would like to know from you > ---------------------------------------------------------------------------------- > Current Scenario > ------------------------- > Current system has one button called Export, selecting this opens in > new window then content of account details will be displayed in PDF > where user will be allowed either to save ot print. > > Clarification from You > ------------------------------- > Would you please reply the same can be achieved in GWT using popup > panel or some other way? if so, please send me link or code where I > can refer it. > > Once Agian I want to thank for your reply for all my queries. > > Thanks > Arul > > On Dec 18, 7:45 am, gregor <greg.power...@googlemail.com> wrote: > > > Hi Arul, > > > Firstly, if the warning you refer to is: > > > [WARN] Field 'private final > > com.google.gwt.i18n.client.impl.ConstantMap.OrderedConstantSet<java.lang.String> > > keys' will not be serialized because it is final > > > I think this has just crept into 1.5.3 somehow, there have been other > > posts about this. It is AFAIK a minor bug in hosted mode but it has no > > effect at all on your application - it's annoying, but just ignore it. > > It has no effect on returning class instances over RPC. If however the > > warning is different to that, then it is unusual and you should post > > it in full. > > > > I am trying my level best not to change DAO pattern which is already > > > exists in my application. > > > There were lot of methods returns ArrayList and Vectors for different > > > purpose. According to your reply now I need to change my DO as well. > > > I did not mean to suggest that. I was suggesting that you could > > continue to use your DAO service that returns a Vector of Accounts as > > now, but simply load the Vector into the Command DTO object (which has > > a field for it) rather than directly pass the Vector itself as the RPC > > return value. > > > regards > > gregor > > > > Would you please clarify one thing, if I use ArrayList or Vector > > > instead a class (which implements Serilizable) as return type as you > > > mentioned your reply for business methods then I am getting some > > > warning like " Keys will not be Serilized because it is not final". > > > Have to use always class as return type in GWT RPC business methids > > > instead traditional java programming return ( ArrayList,Vector > > > etc,,) ? > > > > Thanks > > > Arul > > > > On Dec 17, 9:31 am, gregor <greg.power...@googlemail.com> wrote: > > > > > Hi Arul, > > > > > Yes and no. Yes. this is the way you set up RPC services client side, > > > > but no, you do not necessarily have to have dozens of separate > > > > callbacks, one for every single use case. > > > > > For example, here you have two methods that both return vectors of > > > > accounts. You can merge them into a single RPC service method (thereby > > > > cutting out half the tedious callback code) using a variant of the > > > > Command pattern. For example: > > > > > public class AccountsCommand implements Serializable { > > > > > enum Operation {available, selected, ....,etc}; > > > > > private Operation op; // best made immutable > > > > private Vector<Account> accounts = new Vector<Account>(); > > > > > // constructors, getters, setters, etc > > > > > } > > > > > You set the op and dispatch one of these to a single RPC service and > > > > the RPC service returns the same object that now contains the results > > > > e.g. > > > > > public interface AccountsService extends RemoteService { > > > > AccountsCommand getAccounts(AccountsCommand command); > > > > > } > > > > > This is particularly convenient with enums because you can use a > > > > switch statement in the (now) single callback to call the right > > > > methods client side to control the UI, e,g, > > > > > public void onSuccess(AccountsCommand command) { > > > > Command.Operation operation = command.getOperation(); > > > > switch (operation) { > > > > case available: {doSomething(command.getAccounts > > > > ());break;} > > > > case selected: {doSomethingElse(command.getAccounts > > > > ());break;} > > > > //etc > > > > } > > > > "); > > > > > which I think is quite neat and readable. You can also easily add > > > > additional fields to AccountsCommand that might become necessary/ > > > > desirable without altering the RPC infrastructure code at all, and > > > > also any useful utility methods for manipulating lists of accounts > > > > (sorting for example). I like this approach because I think it > > > > maintains a strong business focus around a group of related use cases > > > > at the same time as simplifying the tedious RPC infrastructure code. > > > > > regards > > > > gregor > > > > > On Dec 17, 2:17 pm, Arul <arulmanikandan.sriniva...@gmail.com> wrote: > > > > > > Hi, > > > > > I written two business method inside service class. > > > > > When I call these two methods inside client class, I have to write two > > > > > seperate block containing onSuccess, onFailure methods for each of the > > > > > business method in service class. > > > > > > For Example see my service class below > > > > > ------------------------------------------------------------------------------------------------------ > > > > > public interface AccountsService extends RemoteService { > > > > > Vector getAvailbleAccounts(); > > > > > Vector getSelectedAccounts();} > > > > > > ------------------------------------------------------------------------------------------------------ > > > > > > Please find below my implementation (client) class for above two > > > > > methods > > > > > ----------------------------------------------------------------------------------------------------------------------------- > > > > > AsyncCallback<Vector> callback = new AsyncCallback<Vector>() { > > > > > public void onFailure(Throwable caught) { > > > > > System.out.println("Inside getAvailbleAccounts Error "); > > > > > > } > > > > > > public void onSuccess(Vector result) { > > > > > System.out.println("Inside getAvailbleAccounts On Success "); > > > > > }; > > > > > accountServiceSvc.getAvailbleAccounts(callback); > > > > > > AsyncCallback<Vector> callback1 = new AsyncCallback<Vector>() { > > > > > public void onFailure(Throwable caught) { > > > > > System.out.println("Inside getSelectedAccounts Error "); > > > > > } > > > > > > public void onSuccess(Vector result) { > > > > > System.out.println("Inside getSelectedAccounts On Success > > > > > "); > > > > > } > > > > > }; > > > > > accountServiceSvc.getSelectedAccounts(callback1); > > > > > ----------------------------------------------------------------------------------------------------------------------------- > > > > > > Is this the way of writting blocks for every business method in GWT > > > > > RPC? > > > > > > Thanks > > > > > Arul- Hide quoted text - > > > > > - Show quoted text -- Hide quoted text - > > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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