Difference between MongoCursor vs FindIterable

Question

I want know what is the difference between MongoCursor and FindIterable.

MongoCursor:

MongoCursor<Document> cursorPersonDoc = personDocCollection.find(whereClauseCondition).iterator();
        while (cursorPersonDoc.hasNext()) {
           Document doc = cursorPersonDoc.next();
           String s1 = doc.getString("s1");
         }

FindIterable:

FindIterable<Document> cursorPersonDoc = personDocCollection.find(whereClauseCondition);
    for (doc: cursorPersonDoc){
      String s1 = doc.getString("s1");
    }

pvpkiran · Accepted Answer · 2018-06-15T13:18:59.127

If you look at the methods which are there in both the classes you will get an idea.

FindIterable has methods like filter, limit, skip which will help you in filtering out the results.
And also it has methods like maxAwaitTime(for tailable cursors) and maxTime.

MongoCursor doesn't have all these. But there is one advantage using MongoCursor. MongoCursor interface extends Closeable, which in turn extends AutoCloseable.

AutoCloseable (introduced in Java 7) makes it possible to use try-with-resources idiom. Something like this

try (final MongoCursor cursor = personDocCollection.find(whereClauseCondition).iterator()) {
   ........
 }

score 1 · Answer 2 · answered Jun 15 '18 at 12:57

Documentation of findIterable and mongodbIterable

FindIterable

Iterable for find.

MongoIterable

The MongoIterable is the results from an operation, such as a query.

MongoCursor allow to iterate through any kind of data, since FindIterable will iterate through Find result only.

FindIterable will give you more targeted methods.

Difference between MongoCursor vs FindIterable

2 Answers2