Você pode usar o
mongoTemplate.executeCommand(DBObject dbObject) variante. Basta alterar a data para json estendido que é suportado pelo analisador Json e criar o comando.
Algo como
long date1 = Instant.parse("2016-07-25T10:33:04.196Z").toEpochMilli();
long date2 = Instant.parse("2018-07-25T10:33:04.196Z").toEpochMilli();
DBObject dbObject = new BasicDBObject(
"aggregate", "mycollection").append(
"pipeline", JSON.parse("[\n" +
" {\n" +
" \"$match\": {\n" +
" \"$and\": [\n" +
" {\n" +
" \"orderDate\": {\n" +
" \"$gte\": \""+ date1 +"\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"orderDate\": {\n" +
" \"$gte\": \""+ date2 +"\"\n" +
" }\n" +
" }\n" +
" ]\n" +
" }\n" +
" },\n" +
" {\n" +
" \"$project\": {\n" +
" \"orderType\": 1,\n" +
" \"count\": 1,\n" +
" \"month\": {\n" +
" \"$month\": [\n" +
" \"$orderDate\"\n" +
" ]\n" +
" }\n" +
" }\n" +
" },\n" +
" {\n" +
" \"$group\": {\n" +
" \"_id\": {\n" +
" \"month\": \"$month\",\n" +
" \"orderType\": \"$orderType\"\n" +
" },\n" +
" \"count\": {\n" +
" \"$sum\": 1\n" +
" }\n" +
" }\n" +
" }\n" +
"]")).append(
"cursor", new BasicDBObject("batchSize", 1000)
);
mongoTemplate.executeCommand(dbObject)
