Example usage for com.mongodb DBCursor size

Introduction

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

Prototype

public int size() 

Source Link

Document

Counts the number of objects matching the query this does take limit/skip into consideration

Usage

From source file:mx.edu.cide.justiciacotidiana.v1.mongo.MongoInterface.java

License:Open Source License

/**
 * Obtiene la lista de los elementos de una coleccin en formato JSON. Si se proporciona una referencia, se hace un filtrado.
 * @param collectionName Nombre de la coleccin de donde se extraern los elementos.
 * @param query Objeto de referencia para la bsqueda.
 * @return Cadena JSON con el resultado.
 *///from  www . j ava  2s. co  m
public String listItemsAsJSON(String collectionName, BasicDBObject query) {
    DBCursor cursor = findItems(collectionName, query);
    cursor.sort(new BasicDBObject(FIELD_CREATED, -1));
    StringBuilder ret = new StringBuilder();
    long count = 0;

    if (null != cursor && cursor.hasNext()) {
        count = cursor.size();
    }
    ret.append("{\"count\":").append(count);
    if (cursor.hasNext()) {
        ret.append(", \"items\": [");
        try {
            while (cursor.hasNext()) {
                BasicDBObject t = (BasicDBObject) cursor.next();
                ret.append(Utils.JSON.toJSON(t));
                if (cursor.hasNext())
                    ret.append(",");
            }
        } finally {
            cursor.close();
        }
        ret.append("]");
    }
    ret.append("}");
    return ret.toString();
}

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From source file:mx.edu.cide.justiciacotidiana.v1.services.Propuestas.java

License:Open Source License

private String getProposalsJSON(String categoryId) {
    StringBuilder ret = new StringBuilder();
    BasicDBObject query = null;//from   w  ww  .j  av  a 2  s.c  o m
    if (null != categoryId && categoryId.length() > 0) {
        query = new BasicDBObject(Propuesta.FIELDS.CATEGORYID, categoryId);
    }

    long count = 0;
    DBCursor propuestas = Utils.mongo.findItems(MongoInterface.COLLECTIONS.PROPUESTAS, query);
    propuestas.sort(new BasicDBObject(Propuesta.FIELDS.CREATED, -1));

    if (null != propuestas && propuestas.hasNext()) {
        count = propuestas.size();
    }

    ret.append("{\"count\":").append(count);

    if (count > 0) {
        ret.append(", \"items\": [");
        try {
            while (propuestas.hasNext()) {
                BasicDBObject propuesta = (BasicDBObject) propuestas.next();
                ObjectId pId = (ObjectId) propuesta.get(Propuesta.FIELDS.MONGOID);
                String key = pId.toString();
                BasicDBList comments = getCommentsList(key);
                BasicDBList likes = getLikes(key);
                BasicDBList dislikes = getDisLikes(key);
                BasicDBList refrains = getRefrains(key);

                BasicDBObject commentsContainer = new BasicDBObject("data", comments);
                propuesta.put(Propuesta.FIELDS.COMMENTS, commentsContainer);

                BasicDBObject votes = new BasicDBObject();

                //Muy verbose y con muchos niveles, se puede simplificar la estructura
                BasicDBObject _likes = new BasicDBObject(Voto.PARTICIPANTS, likes);
                votes.put(Voto.LIKE, _likes);

                //Muy verbose y con muchos niveles, se puede simplificar la estructura
                BasicDBObject _dislikes = new BasicDBObject(Voto.PARTICIPANTS, dislikes);
                votes.put(Voto.DISLIKE, _dislikes);

                //Muy verbose y con muchos niveles, se puede simplificar la estructura
                BasicDBObject _refrains = new BasicDBObject(Voto.PARTICIPANTS, refrains);
                votes.put(Voto.REFRAIN, _refrains);

                propuesta.append(Propuesta.FIELDS.VOTES, votes);

                ret.append(Utils.JSON.toJSON(propuesta));
                if (propuestas.hasNext())
                    ret.append(",");
            }
        } catch (MongoException ex) {
            System.out.println("Error al genera lista de comentarios asociada a propuesta");
        }
        ret.append("]");
    }
    ret.append("}");
    return ret.toString();
}

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From source file:net.onrc.openvirtex.db.DBManager.java

License:Apache License

/**
 * Read all virtual networks from database and spawn an OVXNetworkManager for each.
 *//*from  www. j  a v  a  2 s.  com*/
@SuppressWarnings("unchecked")
private void readOVXNetworks() {
    PrintStream ps = System.err;
    System.setErr(null);
    try {
        // Get a cursor over all virtual networks
        DBCollection coll = this.collections.get(DBManager.DB_VNET);
        DBCursor cursor = coll.find();
        log.info("Loading {} virtual networks from database", cursor.size());
        while (cursor.hasNext()) {
            OVXNetworkManager mngr = null;
            Map<String, Object> vnet = cursor.next().toMap();
            try {
                // Create vnet manager for each virtual network
                mngr = new OVXNetworkManager(vnet);
                OVXNetwork.reserveTenantId(mngr.getTenantId());
                // Accessing DB_KEY field through a class derived from the abstract OVXSwitch
                List<Map<String, Object>> switches = (List<Map<String, Object>>) vnet.get(Switch.DB_KEY);
                List<Map<String, Object>> links = (List<Map<String, Object>>) vnet.get(Link.DB_KEY);
                List<Map<String, Object>> ports = (List<Map<String, Object>>) vnet.get(Port.DB_KEY);
                List<Map<String, Object>> routes = (List<Map<String, Object>>) vnet.get(SwitchRoute.DB_KEY);
                this.readOVXSwitches(switches, mngr);
                this.readOVXLinks(links, mngr);
                this.readOVXPorts(ports, mngr);
                this.readOVXRoutes(routes, mngr);
                DBManager.log.info("Virtual network {} waiting for {} switches, {} links and {} ports",
                        mngr.getTenantId(), mngr.getSwitchCount(), mngr.getLinkCount(), mngr.getPortCount());
            } catch (IndexOutOfBoundException | DuplicateIndexException e) {
                DBManager.log.error("Failed to load virtual network {}: {}", mngr.getTenantId(),
                        e.getMessage());
            }
        }
    } catch (Exception e) {
        log.error("Failed to load virtual networks from db: {}", e.getMessage());
    } finally {
        System.setErr(ps);
    }
}

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From source file:net.scran24.datastore.mongodb.MongoDbDataStore.java

License:Apache License

@Override
public Option<SecureUserRecord> getUserRecord(String survey_id, String username) throws DataStoreException {
    DBCollection col = getUsersCollection(survey_id);

    DBObject q = new BasicDBObject(FIELD_USERNAME, username);

    DBCursor result = col.find(q);

    try {//from  ww  w . j  a  v  a 2  s. co  m
        if (result.size() == 0)
            return Option.none();
        else {
            BasicDBObject userData = (BasicDBObject) result.next();
            return Option.some(parseUserRecord(userData));
        }
    } catch (MongoException e) {
        throw new DataStoreException(e);
    } finally {
        result.close();
    }
}

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From source file:net.tbnr.gearz.arena.ArenaManager.java

License:Open Source License

/**
 * Loads the arenas into the List./*www .jav a2s . co  m*/
 */
private void loadArenas() throws GearzException {
    DBCursor dbCursor = this.collection.find();
    if (dbCursor.size() == 0) {
        throw new GearzException("No arenas found!");
    }
    while (dbCursor.hasNext()) {
        DBObject next = dbCursor.next();
        Arena attempt;
        try {
            attempt = ArenaManager.arenaFromDBObject(this.arenaClass, next);
        } catch (GearzException e) {
            e.printStackTrace();
            continue;
        }
        this.arenas.add(attempt);
        Gearz.getInstance().getLogger()
                .info("Loaded Arena - " + attempt.getName() + " by - " + attempt.getAuthors());
    }
}

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From source file:nl.vu.psy.relic.persistence.mongo.MongoStore.java

License:Open Source License

@Override
public Relic getRelic(String relicId) {
    BasicDBObject bdo = new BasicDBObject();
    bdo.put("relic.identifier", relicId);
    DBCursor find = relicCollection.find(bdo);
    if (find.size() == 1) {
        DBObject dbo = find.next();//from w  w  w  .ja v  a  2  s.  c om
        return MongoMapper.DBObjectToRelic(dbo);
    } else if (find.size() > 1) {
        throw new RelicRuntimeException(
                "The relic collection is possibly corrupt, more than one entry was found for the identifier ["
                        + relicId + "].");
    } else {
        return null;
    }
}

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From source file:nl.vu.psy.relic.persistence.mongo.MongoStore.java

License:Open Source License

@Override
public Relic[] getAllRelics() {
    Relic[] result = null;//w  ww.  j av a 2s  . c  o m
    BasicDBObject bdo = new BasicDBObject();
    bdo.put("relic.identifier", new BasicDBObject("$exists", true));
    DBCursor find = relicCollection.find(bdo);
    result = new Relic[find.size()];
    int i = 0;
    while (find.hasNext()) {
        DBObject dbo = find.next();
        result[i] = MongoMapper.DBObjectToRelic(dbo);
        i++;
    }
    return result;
}

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From source file:nl.vu.psy.relic.persistence.mongo.MongoStore.java

License:Open Source License

@Override
public ResolverDescriptor getResolverDescriptor(String relicId, String environment) {
    BasicDBObject bdo = new BasicDBObject();
    bdo.put("resolver.identifier", relicId);
    bdo.put("resolver.environment", environment);
    DBCursor find = relicCollection.find(bdo);
    if (find.size() == 1) {
        DBObject dbo = find.next();/*w ww. j av a 2  s.c om*/
        return MongoMapper.DBObjectToResolverDescriptor(dbo);
    } else if (find.size() > 1) {
        throw new RelicRuntimeException(
                "The relic collection is possibly corrupt, more than one entry was found for the identifier ["
                        + relicId + "] and environment [" + environment + "].");
    } else {
        return null;
    }
}

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From source file:nl.vu.psy.rite.persistence.mongo.MongoCommandStore.java

License:Open Source License

@Override
public ClientCommand consumeClientCommand(String clientId) {
    BasicDBObject query = new BasicDBObject();
    query.put("clientcommand.clientid", clientId);
    DBCursor find = commandCollection.find(query);
    if (find.size() == 1) {
        DBObject dbo = find.next();/* w ww. ja  v a 2s .c  o m*/
        ClientCommand co = MongoCommandMapper.DBObjectToClientCommand(dbo);
        commandCollection.remove(query);
        return co;
    } else if (find.size() > 1) {
        throw new RiteRuntimeException(
                "The rite command collection is possibly corrupt, more than one entry was found for the identifier ["
                        + clientId + "].");
    } else {
        return null;
    }
}

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From source file:nl.vu.psy.rite.persistence.mongo.MongoInfoStore.java

License:Open Source License

@Override
public String[] getClientInfo(String clientId) {
    BasicDBObject query = new BasicDBObject();
    query.put("clientinfo.clientid", clientId);
    DBCursor find = infoCollection.find(query);
    String[] result = new String[find.size()];
    int i = 0;/*from  w  w  w  . j  a  va2  s . co  m*/
    while (find.hasNext()) {
        result[i] = MongoInfoMapper.DBObjectToString(find.next());
        i++;
    }
    return result;
}

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