JDev 12c: How to reset a filter on an af:table the 12c way

This post is a continuation of an earlier blog about how to reset a filter on an af:table.
A question on OTN JDev and ADF spaces brought a change to my attention which I like to share here.
Using the code from the former post now results in a depreated warning in 12c:

    public void resetTableFilter(ActionEvent actionEvent)
    {
        FilterableQueryDescriptor queryDescriptor =
            (FilterableQueryDescriptor) getEmpTable().getFilterModel();
        if (queryDescriptor != null && queryDescriptor.getFilterCriteria() != null)
        {
            queryDescriptor.getFilterCriteria().clear();
            getEmpTable().queueEvent(new QueryEvent(getEmpTable(), queryDescriptor));
        }
    }

Warning(7,28): getFilterCriteria() in oracle.adf.view.rich.model.FilterableQueryDescriptor has been deprecated

and a look into the javadoc for the getFilterCriteria() method showed

Deprecated. Please use #getFilterConjunctionCriterion

AFAIK you only get the javadoc if you have access to the source code of ADF which you can get via support.oracle.com.

Knowing what to use instead of the deprecated method is half the solution. It turned out that it’s not enough to to use the new method to get the FilterConjunctionCriterion but that you have to iterate over the ConjunctionCriterion and reset them one by one. Here you have to check which type of ConjunctionCriterion you get from the iterator as there are two

1. AttributeCriterion
2. ConjunctionCriterion

Only the AttributeCriterion needs to be reset, the ConjunctionCriterion represents a group of AttributeCriterion.
The final code looks like:

    /**
     * method to reset filter attributes on an af:table
     * @param actionEvent event which triggers the method
     */
    public void resetTableFilter(ActionEvent actionEvent) {
        FilterableQueryDescriptor queryDescriptor = (FilterableQueryDescriptor) getEmpTable().getFilterModel();
        if (queryDescriptor != null && queryDescriptor.getFilterConjunctionCriterion() != null) {
            ConjunctionCriterion cc = queryDescriptor.getFilterConjunctionCriterion();
            List<Criterion> lc = cc.getCriterionList();
            for (Criterion c : lc) {
                if (c instanceof AttributeCriterion) {
                    AttributeCriterion ac = (AttributeCriterion) c;
                    ac.setValue(null);
                }
            }
            getEmpTable().queueEvent(new QueryEvent(getEmpTable(), queryDescriptor));
        }
    }

The rest of the implementation remained unchanged so you only need exchange the resetTableFilter method in ResetTableFilterBean.java.
The sample used the HR schema as DB connection. You can download the sample workspace for JDev12c from the ADF-EMG Sample Repository.