protected void closeSourceFeatures() {
if (sourceFeatures != null && getSourceFeatureIterator() != null) {
sourceFeatureIterator.close();
sourceFeatureIterator = null;
sourceFeatures = null;
filteredFeatures = null;
listFilter = null;
// NC - joining nested atts
for (AttributeMapping attMapping : selectedMapping) {
if (attMapping instanceof JoiningNestedAttributeMapping) {
((JoiningNestedAttributeMapping) attMapping).close(this);
}
}
}
}
