Use this two functions of ColumnFilter class:
It will look something like this:
Code Select
/**
* Create filter of type SET
*/
public ColumnFilter()
{
type = SET;
set = new HashSet<ColumnFilter>();
operation = AND;
}
/**
* Add new element to SET type filter
*
* @param filter
*/
public void addSubFilter(ColumnFilter filter)
{
if (type == SET)
set.add(filter);
}
It will look something like this:
Code Select
filter = ColumnFilter();
filter.setOperation(ColumnFilter.OR);
filter.addSubFilter(normalFilter); //ColumnFilter that filters events from event_severity column that have normal state
filter.addSubFilter(warningFilter); //ColumnFilter that filters events from event_severity column that have warning state