< netui-data: pager > action to extract lines dynamically

Hello

How can I configure a pager of DataGrid to dynamically extract lines when a user through the paging swap pages?
I know that I can read all my lines to a collection / array before the rendering of the datagrid control and set the pager to iterate on it like this:

[Controller]

Private list < Ride > wrinkles;

public list < Ride > getRides() {}
return of the rides;
}

[Action]
wrinkles = rideDBControl.getAllRides (); huge amount of data
...
back to the front;
}

[JSP]

"< div style =" "border-width: 2px;" > < netui-data: dataGrid name = "currentRidesGrid" dataSource = "pageFlow.rides" >
< netui-data: configurePager pagerFormat = "prevNext" pageSize = "${pageSize}" / >
< netui-data: header >
< netui-data: headerCell headerText = "Name" / >
< netui-data: headerCell headerText = "Description" / >
< / netui-data: header >
< netui-data lines: >
< netui-data: spanCell value = "${container.item.name}" style = "background-color: #f0f0f0; do-size: 14pt; ">
< / netui-data: spanCell >
< netui-data: spanCell value = "${container.item.description}" >
< / netui-data: spanCell >
< / netui-data lines: >
< / netui-data: dataGrid > < / div >

But how can I make the pager call a method to update the content of the collection "wrinkles" according to the current selected page and the size of the page? And how do I get the current page and the size of the page inside this method?
I want to be paginated queries that may return a huge amount of data (1 m + lines), so extract all lines at once is impossible. What I want to do, is spreading the current page and the page size of pager to a method that will update the current collection according to a query such as:

Select X, Y, Z
Table
Where the...
And ROWNUM BETWEEN page * pageSize AND (page + 1) * pageSize

Can someone help a noob?

For more information, I found the answer by myself.

To retrieve the rows dynamically, you must change the tag , and include the attributes a pageAction and partialDataSet, for example:

Within the action of pagination, you can get the current size of the line and page of a PagerModel object. You can then update the data source (don't forget to call the setDataSetSize providing the length of the entire data so that the pager shows the right amount of pages), for example:

@Jpf.Action (forward = {@Jpf.Forward (name = "success", access = Jpf.NavigateTo.currentPage)})
{public pagination() before
DataGridStateFactory dataGridStateFactory = DataGridStateFactory
.getInstance (getRequest ());
Gets the pagerModel for the grid object
PagerModel pagerModel = dataGridStateFactory.getDataGridState)
"currentRidesGrid") .getPagerModel ();
=> Code to get the size of any data source<>
pagerModel.setDataSetSize (dataSourceSize);
          
Get the first line and the model page size
int firstRow = pagerModel.getRow ();
int pageSize = pagerModel.getPageSize ();
          
=> Code to extract the rows to display<>
wrinkles = pageRides;
          
Forward, forward = new Forward ("success");
back to the front;
}

I hope this helps.

See you soon

Tags: Fusion Middleware

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