Example usage for com.mongodb DBCursor count

Introduction

In this page you can find the example usage for com.mongodb DBCursor count.

Prototype

public int count()

Source Link

Document

Counts the number of objects matching the query.

Usage

From source file:tango.mongo.MongoConnector.java

License:Open Source License

public synchronized ArrayList<String> getChannelSettings() {
    DBCursor cur = channelSettings.find().sort(new BasicDBObject("name", 1));
    ArrayList<String> res = new ArrayList<String>(cur.count() + 1);
    res.add("NO SEGMENTATION");
    while (cur.hasNext()) {
        res.add(cur.next().get("name").toString());
    }// ww w .j  a v  a  2  s  . c o m
    cur.close();
    return res;
}

From source file:tango.mongo.MongoConnector.java

License:Open Source License

private ArrayList<ObjectId> listIds(BasicDBObject query, DBCollection col) {
    DBCursor cursor = col.find(query);
    ArrayList<ObjectId> res = new ArrayList<ObjectId>(cursor.count());
    while (cursor.hasNext()) {
        BasicDBObject o = (BasicDBObject) cursor.next();
        res.add(o.getObjectId("_id"));
    }//from  w ww.  ja  v a2s  . c  o  m
    return res;
}

From source file:tango.mongo.MongoConnector.java

License:Open Source License

public synchronized BasicDBObject[] getMeasurementStructure(ObjectId nucId, int[] structures,
        ArrayList<String> fields, boolean exactMatch) {
    BasicDBObject query = new BasicDBObject("nucleus_id", nucId);
    if (exactMatch) {
        query.append("structures", structures);
        DBObject res;/*from  ww w. j a v  a  2s . c o m*/
        if (fields == null || fields.isEmpty()) {
            res = structureMeasurement.findOne(query);
        } else {
            BasicDBObject f = new BasicDBObject();
            if (!fields.contains("structures")) {
                fields.add("structures");
            }
            for (String s : fields) {
                f.append(s, 1);
            }
            res = structureMeasurement.findOne(query, f);
        }
        if (res == null) {
            return new BasicDBObject[] { query };
        } else {
            return new BasicDBObject[] { (BasicDBObject) res };
        }
    } else {
        query.append("structures", new BasicDBObject("$all", structures));
        DBCursor cur;
        if (fields == null || fields.isEmpty()) {
            cur = structureMeasurement.find(query);
        } else {
            BasicDBObject f = new BasicDBObject();
            if (!fields.contains("structures")) {
                fields.add("structures");
            }
            for (String s : fields) {
                f.append(s, 1);
            }
            cur = structureMeasurement.find(query, f);
        }
        BasicDBObject[] res = new BasicDBObject[cur.count()];
        int idx = 0;
        while (cur.hasNext()) {
            res[idx] = (BasicDBObject) cur.next();
            idx++;
        }
        return res;
    }
}

From source file:tango.mongo.MongoConnector.java

License:Open Source License

public void testDuplicateIds(MongoConnector other) {
    DBCursor cur = this.object3D.find(new BasicDBObject(), new BasicDBObject());
    DBCursor cur2 = other.object3D.find(new BasicDBObject(), new BasicDBObject());
    System.out.println("items:" + cur.count() + " items2:" + cur2.count());
    int count = 0;
    while (cur.hasNext()) {
        DBObject o = cur.next();//  w w w. j ava2s .  c o  m
        if (other.object3D.findOne(new BasicDBObject("_id", o.get("_id"))) != null) {
            count++;
        }
    }
    System.out.println("Duplicate:" + count);
}

From source file:test.mongodb.servlet.MongoDBServlet.java

License:Open Source License

protected void handleQuery(PrintWriter pw, String i) {
    try {// ww w.j  av a  2 s .  c  o m
        mongoDB.requestStart();
        DBCollection coll = mongoDB.getCollection("testCollection");
        BasicDBObject query = new BasicDBObject();
        query.put("i", 71);
        DBCursor cur = coll.find(query);
        if (cur.count() == 1)
            pw.format("<h1>>testCollection.%s result: </h2><pre>%s</pre>\n", cur.next());
        else
            pw.format("<h1>>testCollection.%s result</h2>No matches found!\n");
    } finally {
        mongoDB.requestDone();
    }
}

From source file:xbdd.webapp.resource.feature.Report.java

License:Apache License

@SuppressWarnings("unchecked")
@GET/*  w ww  .  j av a 2  s  .com*/
@Produces("application/json")
public DBObject getSummaryOfAllReports(@Context final HttpServletRequest req) {
    final DB db = this.client.getDB("bdd");
    final DBCollection collection = db.getCollection("summary");
    final DBCollection usersCollection = db.getCollection("users");

    final BasicDBObject user = new BasicDBObject();
    user.put("user_id", req.getRemoteUser());

    final DBCursor userCursor = usersCollection.find(user);
    DBObject userFavourites;

    if (userCursor.count() != 1) {
        userFavourites = new BasicDBObject();
    } else {
        final DBObject uDoc = userCursor.next();
        if (uDoc.containsField("favourites")) {
            userFavourites = (DBObject) uDoc.get("favourites");
        } else {
            userFavourites = new BasicDBObject();
        }
    }

    final DBCursor cursor = collection.find();

    try {
        final BasicDBList returns = new BasicDBList();
        DBObject doc;

        while (cursor.hasNext()) {
            doc = cursor.next();
            final String product = ((String) ((DBObject) doc.get("coordinates")).get("product"));
            if (userFavourites.containsField(product)) {
                doc.put("favourite", userFavourites.get(product));
            } else {
                doc.put("favourite", false);
            }
            returns.add(doc);
        }

        return returns;
    } finally {
        cursor.close();
    }
}