GWT: How to implement filtering on CellTable? [duplicate]

This question already has an answer here: Closed 11 years ago.

Possible Duplicate:

GWT Table that supports dynamic filtering

I've been searching SO and do开发者_StackOverflow社区cs, but no success.

Is there already implemented some sort of mechanism for filtering a GWT (2.3) CellTable? By filtering I mean "show only those data that pass this condition".

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The Google Guava library R09 has the static Collection2.filter(..) method. The library had also been extended to work in GWT apps. To filter an instance of Collection<MyType> before feeding it to your CellTable you can write something similar to:

List<MyType> filteredList =
   new ArrayList<MyType>(Collections2.filter(unfilteredList,

      new Predicate<MyType>() {
                @Override
                public boolean apply(MyType listItem) {
                   return (filterCondition) ? true : false;
                }
             })); 

now filteredList can be fed to your CellTable:

     myCellTable.setRowCount(filteredList.size(), true);
     myCellTable.setRowData(0, filteredList);

To use the library both guava-r09.jar and guava-r09-gwt.jar need to be added to your GWT project's classpath.

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I've implemented filtering through implementing an AsyncDataProvider that queries the server using a querystring obtained from the current application place. The AsyncDataProvider updates the table automatically - you tell the AsyncDataProvider to update the table via:

addDataDisplay(final HasData<T> display)

If you're not familiar with Activities and Places, take a look at: http://code.google.com/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html

For example, a history token for me looks like this:

 EntityPlace:Source/q:sourceType_eq=report.

The AsyncDataProvider the uses the Place obtained from the history token to query the server.

HTH.