public List<DOMAIN> getByKeys(Collection<KEY> keys) {
if (keys.isEmpty()) {
return Collections.emptyList();
}
List<DOMAIN> results = new ArrayList<>();
MultiGetRequestBuilder request = client.prepareMultiGet().setPreference("_local");
for (KEY key : keys) {
request.add(
new MultiGetRequest.Item(getIndexName(), getIndexType(), getKeyValue(key))
.routing(getKeyValue(key))
.fetchSourceContext(FetchSourceContext.FETCH_SOURCE));
}
MultiGetResponse response = request.get();
if (response.getResponses() != null) {
for (MultiGetItemResponse item : response.getResponses()) {
Map<String, Object> source = item.getResponse().getSource();
if (source != null) {
results.add(toDoc(source));
}
}
}
return results;
}
