@Test
public void test() {
DBObject o1 =
new BasicDBObject("name", "Rhys Lee")
.append("age", 29)
.append("sex", 1)
.append("type", 6)
.append("regDate", DateUtil.getToday("yyyyMMddHHmmss"));
DBObject o2 =
new BasicDBObject("name", "Ari")
.append("age", 23)
.append("sex", 0)
.append("type", 3)
.append("regDate", DateUtil.getToday("yyyyMMddHHmmss"));
DBObject o3 =
new BasicDBObject("name", "Atrox")
.append("age", 30)
.append("sex", 1)
.append("type", 5)
.append("regDate", DateUtil.getToday("yyyyMMddHHmmss"));
DBObject o4 =
new BasicDBObject("name", "Atrox1")
.append("age", 35)
.append("sex", 1)
.append("type", 5)
.append("regDate", DateUtil.getToday("yyyyMMddHHmmss"));
DBObject o5 =
new BasicDBObject("name", "Atrox2")
.append("age", 25)
.append("sex", 1)
.append("type", 5)
.append("regDate", DateUtil.getToday("yyyyMMddHHmmss"));
DBCollection c = MongoTemplate.getDBCollection("TEST");
c.drop(); // 테스트를 위한 초기화
c.insert(Arrays.asList(o1, o2, o3, o4, o5));
String map =
"function() { "
+ "var category; "
+ "if ( this.age >= 30 ) "
+ "category = 'Big'; "
+ "else "
+ "category = 'Small'; "
+ "emit(category, {name: this.name});}";
String reduce =
"function(key, values) { "
+ "var sum = 0; "
+ "values.forEach(function(doc) { sum += 1; "
+ "}); "
+ "return {cnt : sum};} ";
MapReduceCommand cmd =
new MapReduceCommand(c, map, reduce, null, MapReduceCommand.OutputType.INLINE, null);
MapReduceOutput out = c.mapReduce(cmd);
System.out.println("Mapreduce results");
for (DBObject o : out.results()) {
System.out.println(o.toString());
}
}
