Removing duplicates from SelectItems

[dawityifter]

We have a datasource bound to a dynamicform which has multiple SelectItems that we wanted to use as a filter. Some of the SelectItems have duplicate records that I wanted to avoid. Can anyone show me how this can be done or direct me to a sample code somewhere?
Thanks,
D

[atomatom]

I do this by manually setting the valueMap

 selectItem.setValueMap(valueMap)

I create the valuemap by

  DSCallback callback = new DSCallback() {
			@Override
			public void execute(DSResponse response, Object rawData,
					DSRequest request) {
			  valueMap = response.getRecordList().getValueMap(NAME,NAME);
 }
 dataSource.fetchData(null,callback);

This removes duplicates.

I also have some listener code that I use to maintain these maps in case the data changes.