Entity entity = new Entity("Hoge");
entity.setProperty("aaa", "111");
entity.setProperty("bbb", "222");
ds.put(entity);
Query query = new Query("Hoge");
query.setFilter(new CompositeFilter(CompositeFilterOperator.AND,
Arrays.<com.google.appengine.api.datastore.Query.Filter>asList(
new Query.FilterPredicate("aaa", FilterOperator.EQUAL, "111"),
new Query.FilterPredicate("bbb", FilterOperator.EQUAL, "222"))));
assertThat(ds.prepare(query).asList(FetchOptions.Builder.withDefaults()).size(), is(1));