Re: How to add filtering to AjaxFallbackDefaultDataTable

[Vincenzo Vitale <vi...@gmail.com>]

Hi,

I tried to use the FilterForm adding a TextFilter instead of the normal
TextField but then I had problems with the bindings between the FilterText
and the filter field on my (java) page... so actually I renounced and I just
put a normal Form with just a text field and in the submit implementation of
the search button I set the filter value(s) in my data provider.

So this is not exactly the answer to your questions but maybe it can help...


Here some code:

In my BaseListPage (then extended by different specific ListPages):

   /**
     * Creates the filter form and adds it to the page.
     *
     * @param accountDataProvider The dataprovider to use.
     * @param dataView the data view to use for this filter form.
     */
    private Form createFilterForm(
            final AccountDataProvider accountDataProvider,
            final DataView dataView) {
        keyFilter = new ApiKey();
        keyFilter.setKey("");
        accountDataProvider.setFilterState(keyFilter);
        keyFilterModel = new BoundCompoundPropertyModel(keyFilter);

        Form returnedFilterForm = new Form("filterForm", keyFilterModel);

        key = new TextField("filterByKey");
        keyFilterModel.bind(key, "key");

        returnedFilterForm.add(key);

        cancelFilterButton = new ImageButton("cancelFilterButton") {

            /**
             *
             */
            private static final long serialVersionUID =
-6964798131219341486L;

            @Override
            public void onSubmit() {
                keyFilter.setKey("");
                dataView.setCurrentPage(0);
                setResponsePage(getPage());
            }

        };
        cancelFilterButton.add(key);
        returnedFilterForm.add(cancelFilterButton);

        filterButton = new ImageButton("filterButton") {

            /**
             *
             */
            private static final long serialVersionUID =
-6964798131219341486L;

            @Override
            public void onSubmit() {
                dataView.setCurrentPage(0);
                setResponsePage(getPage());
            }

        };
        returnedFilterForm.add(key);
        returnedFilterForm.add(filterButton);
        return returnedFilterForm;
    }


And then the dataprovider structure:

public abstract class AccountDataProvider extends SortableDataProvider
        implements IFilterStateLocator {

    /** Service that will be used to retrieve the list of accounts */
    protected AccountService<? extends ApiAbstractAccount> accountService;

    /**
     * Reuse the key entity to store filter information.
     */
    private ApiKey keyFilter;

    public AccountDataProvider(
            AccountService<? extends ApiAbstractAccount> accountService) {
        this.accountService = accountService;
    }

    /**
     * Retrieves the accounts from the database considering the
filterFielmodel
     * passed.
     *
     * @param first offset for the first row of data to retrieve
     * @param count number of rows to retrieve
     * @param The filter model to be used.
     * @return A collection of accounts.
     */
    protected Collection<? extends ApiAbstractAccount> retrieveAccounts(
            int first, int count, ApiKey keyFilter) {

        SortParam sp = getSort();
        QueryParam queryParam =
                new QueryParam(first, count, sp.getProperty(),
sp.isAscending());

        Collection<? extends ApiAbstractAccount> accounts = null;
        accounts = accountService.find(queryParam, keyFilter);
        return accounts;
    }

    /**
     * Gets total number of items in the collection taking into account the
     * filter value currently set.
     *
     * @return total item count
     */
    public int size() {
        return accountService.count(keyFilter);
    }

    public ApiKey getFilterState() {
        return keyFilter;
    }

    public void setFilterState(Object state) {
        keyFilter = (ApiKey) state;
    }

}

and:

public class BusinessAccountDataProvider extends AccountDataProvider {

    /**
     * Eclipse Generated Id.
     */
    private static final long serialVersionUID = -2177966069711283834L;

    public BusinessAccountDataProvider(
            BusinessAccountService<ApiBusinessAccount>
businessAccountService) {
        super(businessAccountService);

        // set the default sort
        setSort("contactName", true);
    }

    /**
     * Gets an iterator for the subset of accounts.
     *
     * @param first offset for the first row of data to retrieve
     * @param count number of rows to retrieve
     * @return iterator capable of iterating over {first, first+count}
accounts
     */
    public Iterator<ApiBusinessAccountAdapterImpl> iterator(int first, int
count) {
        SortParam sp = getSort();

        Collection<ApiBusinessAccount> accounts =
                (Collection<ApiBusinessAccount>) retrieveAccounts(first,
count,
                        getFilterState());
        Collection<ApiBusinessAccountAdapterImpl> accountAdapters =
                new ArrayList<ApiBusinessAccountAdapterImpl>();

        // Vincenzo Vitale(vita) Jul 13, 2007 10:00:10 AM: Constructing the
list
        // of adapters.
        for (Iterator<ApiBusinessAccount> iter = accounts.iterator(); iter
                .hasNext();) {
            ApiBusinessAccount account = (ApiBusinessAccount) iter.next();
            accountAdapters.add(new ApiBusinessAccountAdapterImpl(account));

        }
        return accountAdapters.iterator();
    }

    /**
     * Converts the object in the collection to its model representation. A
good
     * place to wrap the object in a detachable model.
     *
     * @param object The object that needs to be wrapped
     * @return The model representation of the object
     */
    public IModel model(Object object) {
        return new DetachableAccountModel<ApiBusinessAccountAdapterImpl>(
                ApiBusinessAccountAdapterImpl.class,
                (ApiBusinessAccountAdapterImpl) object, accountService);
    }

}


Ciao,
Vincenzo.

On Dec 10, 2007 10:16 AM, Jeremy Lee <je...@nz1.ibm.com> wrote:

>
> Hi Vincenzo,
>
> I have not had a response to date regarding this unfortunately.   I am
> currently on leave so cannot work on it, however would be very interested to
> see how you go!
>
> Cheers,
>
> Jeremy Lee
> Associate Consultant
> Global Business Services
> IBM New Zealand Ltd
> DDI: +64 9 359 8569 (IBM)
> DDI: +64 9 306 5060 (Air New Zealand)
> Mob: +64 21 237 7049
> Email: jeremyl@nz1.ibm.com




On Nov 17, 2007 6:51 AM, Jeremy Lee <je...@nz1.ibm.com> wrote:

>
> Hi,
>
> I am wanting to add a filtering component to my page which filters a
> AjaxFallbackDefaultDataTable.  I have seen the filter toolbar - but it is
> not exactly what I need.
>
> I have set up the filter object itself in my data provider (implemented as
> IFilterStateLocator) so the actual filtering should not be a problem.
>
> I am trying now to use a "FilterForm" accompanied with a couple of
> TextFilter components however I am not too sure if this is the way to go.
> It seems to me that I could just potentially use a normal form with
> textfields and upon pressing the filter button I call my data provider.
>
> (a) Could you please give me some advice with how to proceed from here.
> (b) An explanation regarding how FilterForm (in particular the
> FOCUS-TRACKER
> and FOCUS-RESTORE) and TextFilter work - as I could not really understand
> the javadocs.
> (c) Is the use of FilterForm and TextFilter even correct?
>
> Look forward to some responses.
>
> Thanks and regards,
>
> Jeremy
> --
> View this message in context:
> http://www.nabble.com/How-to-add-filtering-to-AjaxFallbackDefaultDataTable-tf4825529.html#a13806422
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
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