Re: ERXDisplayGroup ---> ERXBatchingDisplayGroup
Re: ERXDisplayGroup ---> ERXBatchingDisplayGroup
- Subject: Re: ERXDisplayGroup ---> ERXBatchingDisplayGroup
- From: Pascal Robert <email@hidden>
- Date: Tue, 13 Mar 2012 08:44:43 -0400
EODatabaseDataSource dataSource = new EODatabaseDataSource(editingContext(), Category.ENTITY_NAME);
er.extensions.batching.ERXBatchingDisplayGroup dg = new ERXBatchingDisplayGroup<Category>();
dg.setNumberOfObjectsPerBatch(20);
dg.setDataSource(dataSource);
dg.setObjectArray(Category.fetchAllCategories(editingContext()));
> hi everybody.
> i have some legasy code.
> in this code used ERXDisplayGroup:
>
> //code:
> import com.webobjects.appserver.WOContext;
> import com.webobjects.appserver.WODisplayGroup;
> import com.webobjects.directtoweb.ERD2WUtilities;
>
> import er.directtoweb.pages.ERD2WListPage;
> import er.extensions.batching.ERXBatchingDisplayGroup;
> import er.extensions.batching.ERXFlickrBatchNavigation;
>
> public class BatchNavigationBar extends ERXFlickrBatchNavigation {
> public BatchNavigationBar(WOContext context) {
> super(context);
> }
>
> private ERD2WListPage listPage() {
> return (ERD2WListPage) ERD2WUtilities.enclosingPageOfClass(this, ERD2WListPage.class);
> }
>
> @Override
> public WODisplayGroup displayGroup() {
> return listPage().displayGroup();
> }
>
> public void setCurrentBatchIndex(Integer batchIndex) {
> displayGroup().setCurrentBatchIndex(batchIndex);
> }
> }
> //end code
>
> so the workflow is so:
>
> 1. fetching ALL object of query in array.
> 2. and than give me a portion (size if batch) when i am clicking next/prev pages in this component.
> 3. but NO work with database per batch - it works with array
> 4. when i click next/prev - it adds to the urls of pagination some like this - 1.2.3.1.5.6.7 etc :-) and this brakes my statistics with SEO links.
>
> so i want to avoid this. and i want to use ERXBatchingDisplayGroup instead of WODisplayGroup (ERXDisplayGroup).
> Simple casting not works - falls with cast exception.
> the problem in that listPage().displayGroup() - has type WODisplayGroup.
>
> how can i use in this code ERXBatchingDisplayGroup?
>
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