Examples of com.mongodb.DBCollection.find()

com.mongodb.DBCollection.find()
Calls {@link DBCollection#find(com.mongodb.DBObject,com.mongodb.DBObject,int,int)} and applies the query options @param query query used to search @param fields the fields of matching objects to return @param numToSkip number of objects to skip @param batchSize the batch size. This option has a complex behavior, see {@link DBCursor#batchSize(int) } @param options - see Bytes QUERYOPTION_ @return the cursor @throws MongoException @dochub find

     *            the name of the collection
     * @return a table definition for mongo db.
     */
    public static SimpleTableDef detectTable(DB db, String collectionName) {
        final DBCollection collection = db.getCollection(collectionName);
        final DBCursor cursor = collection.find().limit(1000);


        final SortedMap<String, Set<Class<?>>> columnsAndTypes = new TreeMap<String, Set<Class<?>>>();
        while (cursor.hasNext()) {
            DBObject object = cursor.next();
            Set<String> keysInObject = object.keySet();

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        final DBCollection collection = _mongoDb.getCollection(table.getName());


        final DBObject query = createMongoDbQuery(table, whereItems);


        logger.info("Executing MongoDB 'find' query: {}", query);
        DBCursor cursor = collection.find(query);


        if (maxRows > 0) {
            cursor = cursor.limit(maxRows);
        }
        if (firstRow > 1) {

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        Object val = (options != null ? options.get("slave-ok") : Boolean.FALSE);
        if (val == Boolean.TRUE)
        {
            dbColl.slaveOk();
        }
        DBCursor curs = dbColl.find(query, fieldsSelection);
        try
        {
            if (cmd.getIdentityType() == IdentityType.APPLICATION)
            {
                while (curs.hasNext())

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        Integer limit = exchange.getIn().getHeader(MongoDbConstants.LIMIT, Integer.class);
        DBObject sortBy = exchange.getIn().getHeader(MongoDbConstants.SORT_BY, DBObject.class);
        DBCursor ret = null;
        try {
            if (query == null && fieldFilter == null) {
                ret = dbCol.find(new BasicDBObject());
            } else if (fieldFilter == null) {
                ret = dbCol.find(query);
            } else {
                ret = dbCol.find(query, fieldFilter);
            }

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        DBCursor ret = null;
        try {
            if (query == null && fieldFilter == null) {
                ret = dbCol.find(new BasicDBObject());
            } else if (fieldFilter == null) {
                ret = dbCol.find(query);
            } else {
                ret = dbCol.find(query, fieldFilter);
            }


            if (sortBy != null) {

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            if (query == null && fieldFilter == null) {
                ret = dbCol.find(new BasicDBObject());
            } else if (fieldFilter == null) {
                ret = dbCol.find(query);
            } else {
                ret = dbCol.find(query, fieldFilter);
            }


            if (sortBy != null) {
                ret.sort(sortBy);
            }

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      DBCollection coll = db.getCollection("testData");
      
      DBObject myDoc = coll.findOne();
      System.out.println(myDoc);
      
      DBCursor cursor = coll.find();
      try {
         while(cursor.hasNext()) {
             System.out.println(cursor.next());
         }
      } finally {

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            DB db = (DB)mconn.getConnection();
            DBCollection dbCollection = db.getCollection(collectionName);


            BasicDBObject query = new BasicDBObject();
            query.put("field-name", key);
            DBCursor curs = dbCollection.find(query);
            if (curs == null || !curs.hasNext())
            {
                // No current entry for this key, so add initial entry
                long initialValue = 0;
                if (properties.containsKey("key-initial-value"))

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            }


            // Create the entry for this field if not existing
            query = new BasicDBObject();
            query.put("field-name", key);
            curs = dbCollection.find(query);
            DBObject dbObject = curs.next();


            Long currentValue = (Long)dbObject.get(INCREMENT_COL_NAME);
            long number = currentValue.longValue();
            for (int i=0;i<size;i++)

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  @Override
  public void forEachTuple(ModelConsumer consumer, EntityKeyMetadata... entityKeyMetadatas) {
    DB db = provider.getDatabase();
    for ( EntityKeyMetadata entityKeyMetadata : entityKeyMetadatas ) {
      DBCollection collection = db.getCollection( entityKeyMetadata.getTable() );
      for ( DBObject dbObject : collection.find() ) {
        consumer.consume( new Tuple( new MongoDBTupleSnapshot( dbObject, entityKeyMetadata) ) );
      }
    }
  }

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