in luceneSpatial/src/main/java/org/apache/geode_examples/luceneSpatial/TrainStopSerializer.java [34:47]
public Collection<Document> toDocuments(LuceneIndex index, TrainStop value) {
Document doc = new Document();
// Index the name of the train stop
doc.add(new TextField("name", value.getName(), Field.Store.NO));
Field[] fields = SpatialHelper.getIndexableFields(value.getLongitude(), value.getLatitude());
for (Field field : fields) {
doc.add(field);
}
return Collections.singleton(doc);
}