DataSourceTableModel lines 114-124 (starting with the "Send RPC
request for data" comment) is where the request for data is sent. When
that call returns successfully, the TableModel callback's
onRowsReady() method is called.
On Tue, Nov 18, 2008 at 11:02 AM, Suri <[EMAIL PROTECTED]> wrote:
>
> Hi Isaac,
> What I want to know is,
> 1) Where and how does the data actually get loaded into the table.
> Where is the call that does this? Looking through the PagingScrollDemo
> code I can't seem to isolate that point from where the data is
> retrieved remotely and loaded up into a table. i.e what call triggers
> this action from the PagingScrollTableDemo to finally obtain the data
> and which point in the whole process does it happen. In the case of
> the ScrollTableDemo I see that the onModuleLoaded() method is called
> which seems to be responsible for initializing the data. I was able to
> get the same successfully compiled using my own example, but now when
> trying to understand the PagingScrollTableDemo, I am getting lost as
> to what call is specifically to begin the data retrieval and loading
> into the table.
>
> Thanks for the patience.
>
> Suri
>
> On Nov 18, 10:40 am, "Isaac Truett" <[EMAIL PROTECTED]> wrote:
>> What do you want to know?
>>
>> The code you posted yesterday won't even compile, so I imagine you
>> haven't actually implemented anything yet. Why don't you at least get
>> to the point where you have some compilable code and then post
>> questions about that code if you can't get it to work the way you
>> want?
>>
>> On Tue, Nov 18, 2008 at 10:28 AM, Suri <[EMAIL PROTECTED]> wrote:
>>
>> > Hey Isaac,
>> > Or could you explain a little more about how to use the TableModel?
>> > Thanks
>> > Suri
>>
>> > On Nov 17, 1:25 pm, Suri <[EMAIL PROTECTED]> wrote:
>> >> Hey Isaac,
>> >> Thanks for that information. Based on that let me know what I have
>> >> below is correct
>>
>> >> public class TestTableModel extends TableModel<MyBean>
>> >> {
>> >> // code to initialize the RPC service - possibly in a constructor?
>>
>> >> public void onRequest()
>> >> {
>> >> // code to use the use the service and make a call
>> >> service.requestRows(request, new
>> >> AsyncCallback<SerializableResponse<MyBean> result>>() {
>> >> public void onFailure(Throwable caught)
>> >> {
>> >> //do something
>> >> callback.onFailure(new Exception....)
>> >> }
>> >> public void onSuccess
>> >> (SerializableResponse<MyBean> result)
>> >> {
>> >> callback.onRowsReady(request, result);
>> >> }
>> >> });
>> >> }
>>
>> >> }
>>
>> >> public class MyTableDemo
>> >> {
>>
>> >> public TesttableModel myTableModel = null;
>>
>> >> public void onModuleLoad()
>> >> {
>> >> // code to create/initialize tables
>> >> ....
>> >> scrollTable = createScrollTable(headerTable, dataTable,
>> >> footerTable);
>>
>> >> // to retrieve the data remotely and store in the table created
>> >> scrollTable.getTableModel().onRequest();
>> >> }
>>
>> >> public void createScrollTable(.....)
>> >> {
>> >> myTableModel = new TestTableModel();
>> >> TableDefinition<MyBean> myTableDef = createTableDefinition();
>> >> MyScrollingTable<MyBean> myScrollTable = new MyScrollingTabel
>> >> (myTableModel, dataTable, headerTable, myTableDef);
>> >> myScrollTable.setFooterTable(footerTable);
>>
>> >> }
>>
>> >> // the other usual code continues
>>
>> >> }
>>
>> >> I thought it best to give some sort of example to see if what I'm
>> >> thinking is right. Above you see that I created my own TableModel from
>> >> the existing one.
>> >> Additionally, I showed the snippet of code where the table model is
>> >> added to the scroll table in the TableDemo class.
>> >> And finally in the onModuleLoad method you can see the tableModel
>> >> being accessed and being called to retrieve the data remotely. Is that
>> >> right?
>>
>> >> I'm guessing somewhere the onRowsReady method would need to be
>> >> implemented by me? Where would that be? If it isn't expected to be
>> >> implemented by me, then
>> >> how would I end up creating a table when my bean has other objects in
>> >> it as opposed to only primitive data.
>>
>> >> Hope that gives you an idea of where my confusion is, since its at
>> >> about 3 places i think :)
>>
>> >> Thanks again
>>
>> >> Suri
>>
>> >> On Nov 17, 10:09 am, "Isaac Truett" <[EMAIL PROTECTED]> wrote:
>>
>> >> > Suri,
>>
>> >> > PagingScrollTable gets data from a TableModel using a Request/Callback
>> >> > mechanism similar to RPC. The simplest way to get that data from the
>> >> > server would be to implement TableModel and have onRequest() invoke an
>> >> > RPC service. The RPC AsyncCallback's onSuccess() would call the table
>> >> > Callback's onRowsReady().
>>
>> >> > - Isaac
>>
>> >> > On Mon, Nov 17, 2008 at 9:50 AM, Suri <[EMAIL PROTECTED]> wrote:
>>
>> >> > > Hi Isaac,
>> >> > > I understand quite a bit of the code now and how to use it. I set up a
>> >> > > simple example that uses the ScrollTableDemo like code initially to
>> >> > > understand what's going on. However, there is one aspect I'm not able
>> >> > > to understand clearly. Could you possibly help me understand how the
>> >> > > Data is retrieved remotely in the PagingScrollTable. I see a reference
>> >> > > to a DataSourceModel but I'm not sure how/when it gets invoked and
>> >> > > what exactly happens that causes the data to get loaded into the
>> >> > > table?
>>
>> >> > > Thanks
>> >> > > Suri
>>
>> >> > > On Nov 11, 9:29 am, Suri <[EMAIL PROTECTED]> wrote:
>> >> > >> Aha. I understand now. I guess I went too far in the linked README
>> >> > >> document provided. It needed to be as far as the setting up the
>> >> > >> eclipse section and ignoring the rest from checkstyle onward really
>> >> > >> and then following the additional instructions given in the webpage.
>> >> > >> I
>> >> > >> got to build the incubator :). Thanks again for your patience Isaac.
>> >> > >> I'm sure I'll be more bothersome now that I can start playing with
>> >> > >> the
>> >> > >> PagingScrollTable a bit.
>>
>> >> > >> Suri
>>
>> >> > >> On Nov 10, 5:27 pm, "Isaac Truett" <[EMAIL PROTECTED]> wrote:
>>
>> >> > >> > Okay, I see the references to "projects" in the instructions that
>> >> > >> > are
>> >> > >> > causing you alarm. In that context a "project" is an Eclipse
>> >> > >> > project.
>> >> > >> > The GWT project has several distinct Eclipse project configurations
>> >> > >> > within a single SVN repository. The Eclipse setup instructions
>> >> > >> > referenced in step 1 of Setup for Eclipse are actually the
>> >> > >> > instructions for setting up Eclipse to build GWT, not the
>> >> > >> > Incubator.
>> >> > >> > It's having you configure CheckStyle, set formatting rules, and
>> >> > >> > other
>> >> > >> > things that probably won't matter if you aren't contributing code.
>> >> > >> > If
>> >> > >> > you want to contribute changes (and you're certainly encouraged to
>> >> > >> > do
>> >> > >> > so!) then you'll want to get the nit-picky formatting details
>> >> > >> > right,
>> >> > >> > but otherwise you don't need to bother with that.
>>
>> >> > >> > And if all you want to do is run Ant, you don't even need to setup
>> >> > >> > Eclipse.
>>
>> >> > >> > On Mon, Nov 10, 2008 at 5:02 PM, Suri <[EMAIL PROTECTED]> wrote:
>>
>> >> > >> > > Hi Ken,
>> >> > >> > > I was following that and then as shown in the link there for
>> >> > >> > > setting
>> >> > >> > > up for eclipse:
>> >> > >> > > " 1.Follow the instructions here to set up your eclipse
>> >> > >> > > environment.
>> >> > >> > > "
>>
>> >> > >> > > I downloaded the readme file from the link. And while following
>> >> > >> > > that,
>> >> > >> > > Around Line 104 in the file you'll see that it mentions
>> >> > >> > > instructions
>> >> > >> > > to download GWT core projects.
>> >> > >> > > This is where I became hesistant to continue. Also from the
>> >> > >> > > instructions in setting up Eclipse:
>>
>> >> > >> > > "4 If you not on Windows, you will need to fix the gwt-dev
>> >> > >> > > project
>> >> > >> > > reference
>>
>> >> > >> > > 1. Right click on the new incubator project in the explorer and
>> >> > >> > > choose Properties
>> >> > >> > > 2. Java Build Path
>> >> > >> > > 3. Under the Projects tab, replace gwt-dev-windows as
>> >> > >> > > appropriate "
>>
>> >> > >> > > Isn't that again talking about using the gwt-dev-windows project
>> >> > >> > > and
>> >> > >> > > not jar?
>>
>> >> > >> > > But if what you say is true and all I need is the GWT Tools
>> >> > >> > > section
>> >> > >> > > (By section I again presume you are talking about the GWT tools
>> >> > >> > > project which is mentioned to be checked out from SVN in the
>> >> > >> > > beginning
>> >> > >> > > of the Making Incubator Better page), then would it be as simple
>> >> > >> > > as
>>
>> >> > >> > > 1) Setting the GWT_ROOT (to GWT incubator )
>> >> > >> > > 2) Setting the GWT_TOOLs (to GWT Tools)
>> >> > >> > > 3) JDK_HOME
>>
>> >> > >> > > And then finally running my ant?
>>
>> >> > >> > > Thanks for the patience.
>>
>> >> > >> > > Suri
>>
>> >> > >> > > On Nov 10, 4:48 pm, "Isaac Truett" <[EMAIL PROTECTED]> wrote:
>> >> > >> > >> > I hope I'm not wrong in my observations?
>>
>> >> > >> > >> No, you're absolutely right. The gen2 widgets are new and did
>> >> > >> > >> not
>> >> > >> > >> exist in the last Incubator release.
>>
>> >> > >> > >> > what concerns me was the additional
>> >> > >> > >> > projects that I really have no idea about that I'm having to
>> >> > >> > >> > download
>> >> > >> > >> > to get the incubator compiled.
>>
>> >> > >> > >> Are you following the instructions in the Making Incubator
>> >> > >> > >> Better
>> >> > >> > >> section of the wiki (link below)? The only other download you
>> >> > >> > >> should
>> >> > >> > >> need is the tools section of the main GWT project, which has
>> >> > >> > >> libraries
>> >> > >> > >> required to build GWT and the Incubator.
>>
>> >> > >> > >>http://code.google.com/docreader/#p=google-web-toolkit-incubator&s=go...
>>
>> >> > >> > >> On Mon, Nov 10, 2008 at 4:34 PM,Suri<[EMAIL PROTECTED]> wrote:
>>
>> >> > >> > >> > Hi Issac,
>> >> > >> > >> > Thanks for the info. I did actually go ahead and download
>> >> > >> > >> > that jar a
>> >> > >> > >> > few days ago. However, that seems to be a different version
>> >> > >> > >> > from what
>> >> > >> > >> > is available in the trunk. It seems to be all 1.x version as
>> >> > >> > >> > opposed
>> >> > >> > >> > to the gen2 stuff. For example, I had gone through the sample
>> >> > >> > >> > for the
>> >> > >> > >> > PagingScrollTableDemo from the code I had checked out from
>> >> > >> > >> > the SVN,
>> >> > >> > >> > and then wanted to start using the idea in my own code. The
>> >> > >> > >> > very first
>> >> > >> > >> > import of the FlexTable which in the SVN version is
>> >> > >> > >> > referenced as:
>>
>> >> > >> > >> > import com.google.gwt.gen2.table.override.client.FlexTable;
>>
>> >> > >> > >> > actually turns out to be in the
>>
>> >> > >> > >> > import
>> >> > >> > >> > com.google.gwt.widgetideas.table.client.overrides.FlexTable;
>>
>> >> > >> > >> > I hope I'm not wrong in my observations?
>>
>> >> > >> > >> > Thanks for any input. Additionally, I don't mind building
>> >> > >> > >> > from the
>> >> > >> > >> > trunk for incubator, however what concerns me was the
>> >> > >> > >> > additional
>> >> > >> > >> > projects that I really have no idea about that I'm having to
>> >> > >> > >> > download
>> >> > >> > >> > to get the incubator compiled. For now, lets say I did
>> >> > >> > >> > actually
>> >> > >> > >> > continue with the september version of the jar, I was ideally
>> >> > >> > >> > hoping
>> >> > >> > >> > to use the gen2 code because I think that's where the improved
>> >> > >> > >> > PagingScrollTable lies correct?
>>
>> >> > >> > >> >Suri
>>
>> >> > >> > >> > On Nov 10, 3:37 pm, "Isaac Truett" <[EMAIL PROTECTED]> wrote:
>> >> > >> > >> >>Suri,
>>
>> >> > >> > >> >> You do not need to download the GWT project and build it
>>
>> ...
>>
>> read more ยป
> >
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/Google-Web-Toolkit?hl=en
-~----------~----~----~----~------~----~------~--~---
