Example usage for com.mongodb DBCursor sort

Introduction

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

Prototype

public DBCursor sort(final DBObject orderBy) 

Source Link

Document

Sorts this cursor's elements.

Usage

From source file:it.sayservice.platform.smartplanner.otp.OTPStorage.java

License:Apache License

public List<Object> getObjectsByField(MongoTemplate template, String key, String value, String collectionName,
        Class destinationClass, String orderBy) {
    DBCollection collection = template.getCollection(collectionName);
    List<Object> result = new ArrayList<Object>();

    QueryBuilder qb = QueryBuilder.start(key).is(value);

    DBCursor cursor = collection.find(qb.get());
    if (orderBy != null) {
        BasicDBObject sb = new BasicDBObject();
        sb.put(orderBy, 1);//  w  w  w  . j a  v a  2 s.  c om
        cursor = cursor.sort(sb);
    }

    while (cursor.hasNext()) {
        BasicDBObject dbObject = (BasicDBObject) cursor.next();
        dbObject.remove("_id");

        ObjectMapper mapper = new ObjectMapper();
        Object res = mapper.convertValue(dbObject, destinationClass);
        result.add(res);
    }

    return result;
}

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From source file:it.sayservice.platform.smartplanner.otp.OTPStorage.java

License:Apache License

public List<Object> getObjectsByFields(MongoTemplate template, Map<String, Object> map, String collectionName,
        Class destinationClass, String orderBy) {
    DBCollection collection = template.getCollection(collectionName);
    List<Object> result = new ArrayList<Object>();

    QueryBuilder qb = QueryBuilder.start();
    for (String key : map.keySet()) {
        qb = qb.and(key).is(map.get(key));
    }/*from  ww w.j av a  2 s.c  o  m*/

    DBCursor cursor = collection.find(qb.get());
    if (orderBy != null) {
        BasicDBObject sb = new BasicDBObject();
        sb.put(orderBy, 1);
        cursor = cursor.sort(sb);
    }

    while (cursor.hasNext()) {
        BasicDBObject dbObject = (BasicDBObject) cursor.next();
        dbObject.remove("_id");

        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        Object res = mapper.convertValue(dbObject, destinationClass);
        result.add(res);
    }

    return result;
}

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From source file:it.sayservice.platform.smartplanner.otp.OTPStorage.java

License:Apache License

public List<Object> getObjectsByQuery(MongoTemplate template, DBObject query, String collectionName,
        Class destinationClass, String orderBy, DBObject... fields) {
    DBCollection collection = template.getCollection(collectionName);
    List<Object> result = new ArrayList<Object>();

    DBCursor cursor;

    if (fields.length == 0) {
        cursor = collection.find(query);
    } else {/*from  w  ww  .  j a  va2  s  .c o m*/
        cursor = collection.find(query, fields[0]);
    }

    if (orderBy != null) {
        BasicDBObject sb = new BasicDBObject();
        sb.put(orderBy, 1);
        cursor = cursor.sort(sb);
    }

    while (cursor.hasNext()) {
        BasicDBObject dbObject = (BasicDBObject) cursor.next();
        dbObject.remove("_id");

        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        Object res = mapper.convertValue(dbObject, destinationClass);
        result.add(res);
    }

    return result;
}

---

From source file:it.sayservice.platform.smartplanner.otp.OTPStorage.java

License:Apache License

public List<Object> getPagedObjectsByQuery(MongoTemplate template, DBObject query, String collectionName,
        Class destinationClass, String orderBy, int pageSize, int pageN) {
    DBCollection collection = template.getCollection(collectionName);
    List<Object> result = new ArrayList<Object>();

    DBCursor cursor = collection.find(query).skip(pageN * pageSize).limit(pageSize);
    if (orderBy != null) {
        BasicDBObject sb = new BasicDBObject();
        sb.put(orderBy, 1);//from  w ww .j a va 2 s .c om
        cursor = cursor.sort(sb);
    }

    while (cursor.hasNext()) {
        BasicDBObject dbObject = (BasicDBObject) cursor.next();
        dbObject.remove("_id");

        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        Object res = mapper.convertValue(dbObject, destinationClass);
        result.add(res);
    }

    return result;
}

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From source file:jahspotify.storage.statistics.MongoDBHistoricalStorage.java

License:Apache License

@Override
public Collection<TrackHistory> getHistory(final int index, final int count,
        final HistoryCriteria... historyCriterias) {
    final DBCollection tracks = _db.getCollection("history");

    final DBCursor dbObjects = tracks.find();
    dbObjects.skip(index);/*from ww  w  .  java  2s . c om*/
    dbObjects.limit(count);
    final BasicDBObject orderBy = new BasicDBObject();
    orderBy.put("startTime", -1);
    dbObjects.sort(orderBy);

    return new AbstractCollection<TrackHistory>() {
        @Override
        public Iterator<TrackHistory> iterator() {
            return new MongoDBHistoryCursor(dbObjects);
        }

        @Override
        public int size() {
            return dbObjects.size();
        }
    };
}

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From source file:jahspotify.storage.statistics.MongoDBHistoricalStorage.java

License:Apache License

@Override
public TrackStatistics getTrackStatistics(final Link trackLink) {
    final DBCollection tracks = _db.getCollection("history");

    final BasicDBObject query = new BasicDBObject();
    query.put("trackLink.id", trackLink.getId());
    final DBCursor dbObjects = tracks.find(query);
    final BasicDBObject orderBy = new BasicDBObject();
    orderBy.put("startTime", -1);

    dbObjects.sort(orderBy);

    TrackStatistics trackStatistics = new TrackStatistics();

    int numCompleted = 0;
    int numSkipped = 0;
    int totalSecondsPlayed = 0;

    if (dbObjects.hasNext()) {
        final TrackHistory trackHistory = _gson.fromJson(JSON.serialize(dbObjects.next()), TrackHistory.class);
        trackStatistics.setTrackLink(trackHistory.getTrackLink());
        trackStatistics.setLastPlayed(trackHistory.getStartTime());
        totalSecondsPlayed += trackHistory.getSecondsPlayed();
        numSkipped += trackHistory.isCompleteTrackPlayed() ? 0 : 1;
        numCompleted += trackHistory.isCompleteTrackPlayed() ? 1 : 0;

        if (!dbObjects.hasNext()) {
            trackStatistics.setFirstPlayed(trackHistory.getStartTime());
        }/*from   w ww . ja  v  a  2 s  .  co m*/
    }

    while (dbObjects.hasNext()) {
        final TrackHistory trackHistory = _gson.fromJson(JSON.serialize(dbObjects.next()), TrackHistory.class);
        totalSecondsPlayed += trackHistory.getSecondsPlayed();
        numSkipped += trackHistory.isCompleteTrackPlayed() ? 0 : 1;
        numCompleted += trackHistory.isCompleteTrackPlayed() ? 1 : 0;

        if (!dbObjects.hasNext()) {
            trackStatistics.setFirstPlayed(trackHistory.getStartTime());
        }

    }

    trackStatistics.setNumTimesCompleted(numCompleted);
    trackStatistics.setNumTimesSkipped(numSkipped);
    trackStatistics.setNumTimesPlayed(numCompleted + numSkipped);
    trackStatistics.setTotalPlaytime(totalSecondsPlayed);

    return trackStatistics;
}

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From source file:me.carbou.mathieu.tictactoe.db.DBCollection.java

License:Apache License

public Stream<Map<String, Object>> find(Map where, Map fields, Map sort, Function<Map, Map> transform,
        int limit, int skip) {
    final DBCursor cursor = getCollection().find(new BasicDBObject(addWhere(where)),
            new BasicDBObject(preFind(fields)));
    if (!sort.isEmpty())
        cursor.sort(new BasicDBObject(sort));
    if (skip > 0)
        cursor.skip(skip);/*from   w  w w.ja v a  2  s .c o  m*/
    if (limit > DB.NO_LIMIT)
        cursor.limit(limit);
    int est = cursor.size();
    Spliterator<Map<String, Object>> spliterator = new Spliterators.AbstractSpliterator<Map<String, Object>>(
            est, NONNULL | ORDERED | SIZED | IMMUTABLE) {
        @Override
        public boolean tryAdvance(Consumer<? super Map<String, Object>> action) {
            if (cursor.hasNext()) {
                action.accept(postFind(where, cursor.next(), transform));
                return true;
            } else {
                cursor.close();
                return false;
            }
        }
    };
    return StreamSupport.stream(spliterator, false);
}

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From source file:me.lightspeed7.mongofs.gridfs.GridFS.java

License:Apache License

/**
 * Finds a list of files matching the given query.
 * //from  www. j  a va 2 s .  c om
 * @param query
 *            the filter to apply
 * @param sort
 *            the fields to sort with
 * @return list of gridfs files
 * @throws com.mongodb.MongoException
 */
public List<GridFSDBFile> find(final DBObject query, final DBObject sort) {

    List<GridFSDBFile> files = new ArrayList<GridFSDBFile>();

    DBCursor cursor = filesCollection.find(query);
    if (sort != null) {
        cursor.sort(sort);
    }

    try {
        while (cursor.hasNext()) {
            files.add(injectGridFSInstance(cursor.next()));
        }
    } finally {
        cursor.close();
    }
    return Collections.unmodifiableList(files);
}

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From source file:me.yyam.mongodbutils.MongoDbOperater.java

public List find(QueryInfo queryInfo) {
    DB db = mongoClient.getDB(queryInfo.dbName);
    DBCollection coll = db.getCollection(queryInfo.collName);
    DBCursor cursor = null;
    if (queryInfo.query != null) {
        cursor = coll.find(queryInfo.query);
    } else {/*www  .  j  a v  a2 s  .  c  o m*/
        cursor = coll.find();
    }
    if (queryInfo.order != null) {
        cursor = cursor.sort(queryInfo.order);
    }
    if (queryInfo.limit != null) {
        cursor.limit(queryInfo.limit.intValue());
    }
    if (queryInfo.skip != null) {
        cursor.skip(queryInfo.skip.intValue());
    }
    return cursor2list(cursor);
}

---

From source file:me.yyam.mongodbutils.MongoDbOperater.java

public List<Map> find(DBCollection coll, DBObject query, DBObject order, int start, int limit) {
    DBCursor cursor = null;
    if (query == null) {
        cursor = coll.find();/*from   ww w. j a v a  2 s  .c o m*/
    } else {
        cursor = coll.find(query);
    }

    if (order != null)
        cursor = cursor.sort(order);

    if (start != 0 && limit != 0) {
        cursor.skip(start).limit(limit);
    }
    if (start == 0 && limit != 0) {
        cursor.limit(limit);
    }

    return cursor2list(cursor);
}

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