Mongo DB query in java

Question

I have to write a complex mongo query using java but am not able to do it.

The mongo query looks like this:

db.video.findOne( { 
    $or: [ 
        { key1: { $in : [764] } }, 
        { key2: {$in : [list2] } }, 
        { $and [ { key2 : 3}, {key4:67} ] } 
    ]
})

I have to write the above query using the QueryBuilder class. In what way can I do it?

Thanks

score 17 · Accepted Answer · answered May 04 '12 at 08:17

Using QueryBuilder your query should look like this

DBObject query = QueryBuilder.start().or(
    QueryBuilder.start("key1").in(764).get(),
    QueryBuilder.start("key2").in(keys).get(),
    QueryBuilder.start().and("key3").is(3).and("key4").is(64).get()
 ).get();

Consider using jongo (an API over mongo-java-driver) you can simply copy/paste queries from the shell :

collection.findOne("{$or:[{key1: {$in:[764]}},{key2:{$in:[#]}}, {$and:[{key3:3},{key4:67}]}]}", keys).as(People.class);

But how to execute query(DBObject) ? – Qasim Jun 01 '15 at 16:56 — Qasim, Jun 01 '15 at 16:56

score 6 · Answer 2 · answered May 31 '12 at 15:46

I had the same problem and i got a solution in another way :

ArrayList orList = new ArrayList();
ArrayList andList = new ArrayList();

orList.add(new BasicDBObject("key1", new BasicDBObject("$in", 764)));                  
orList.add(new BasicDBObject("key2", new BasicDBObject("$in", list2)));

andList.add(new BasicDBObject("key2", 3));
andList.add(new BasicDBObject("key4", 67));

orList.add(new BasicDBObject("$and", andList));

BasicDBObject query = new BasicDBObject("$or", orList);

But how to execute query(DBObject) ? – Qasim Jun 01 '15 at 16:56 — Qasim, Jun 01 '15 at 16:56

Mongo DB query in java

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