I'm relatively new to MongoDB and I'm currently working with java towards a "find by most tags matching" solution to information within a collection.
I'm stuck now trying to translate a MongoDB shell operation to the JAVA driver version (this sintaxis is part of the definitions needed )
$cond:[{$eq: ["$tags", 200]}, 1, 0]
What would be a correct JAVA implementation for the sentence above?
Thank you in advance
Whatever the $cond object where in your aggregation operation, to build it to should do something like this:
BasicDBList eqList = new BasicDBList();
eqList.add("$tags");
eqList.add(200);
DBObject eqObject = BasicDBObjectBuilder.start()
.add("$eq", eqList)
.get();
BasicDBList condList = new BasicDBList();
condList.add(eqObject);
condList.add(1);
condList.add(0);
DBObject condObject = BasicDBObjectBuilder.start()
.add("$cond", condList)
.get();
I'm confusing about your aggregation operation, could you give more details?
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