Example usage for com.mongodb DBCursor close

Introduction

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

Prototype

@Override
    public void close() 

Source Link

Usage

From source file:com.uquetignyadminapp.visual.Admin_NewTuples.java

public ArrayList<Map> fillSpecificCollection(DBCollection ObjectsOfCollection) {
    ArrayList<Map> objectData = new ArrayList<Map>();
    DBCursor dbcur = ObjectsOfCollection.find();
    int i = 0;/* w w  w .jav a 2s.  co m*/
    while (dbcur.hasNext()) {
        objectData.add(ObjectsOfCollection.find().toArray().get(i).toMap());
        dbcur.next();
        i++;
    }

    dbcur.close();

    return objectData;
}

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From source file:com.xemsdoom.xeco.core.storage.mongodb.MongoDBStorage.java

License:Open Source License

@Override
public Set<Account> loadAccounts() {

    DBCollection coll = db.getCollection(collection);
    DBCursor cursor = coll.find();
    HashSet<Account> accounts = new HashSet<Account>();

    try {/* w ww.  j a  v  a  2 s. c  o m*/

        // Iterate over all documents
        while (cursor.hasNext()) {

            DBObject document = cursor.next();

            String accName = (String) document.get("_id");
            double amount = (Double) document.get("balance");
            boolean frozen = (Boolean) document.get("freezed");

            // Cleaner
            if (main.getConfig().getNode("Xeco.Cleaner.CleanUnusedAccounts").getBoolean()
                    && (amount == main.getConfig().getNode("Xeco.Account.DefaultBalance").getDouble()
                            && !frozen)) {
                accManager.removeAccount(accName);
                continue;
            }
            accounts.add(new Account(accName, amount, frozen));
        }
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
    return accounts;
}

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From source file:com.ycchung.crawler.Database.java

public boolean isVisited(URL url) {
    BasicDBObject query = new BasicDBObject("url", url.toString());
    DBCursor cursor = coll.find(query);
    try {/*ww w. j  a va  2s.  co m*/
        while (cursor.hasNext()) {
            return true;
        }
    } finally {
        cursor.close();
    }
    return false;
}

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From source file:com.ycchung.crawler.Database.java

public void show() {
    BasicDBObject query = new BasicDBObject("tag", "html");
    DBCursor cursor = coll.find(query);
    try {/*from  w  ww  .j a  v a  2  s .c om*/
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }
}

---

From source file:com.ycchung.crawler.Database.java

public void clear() {
    BasicDBObject query = new BasicDBObject("tag", "html");
    DBCursor cursor = coll.find(query);
    try {/*from www .  ja  v a 2  s  .  co m*/
        while (cursor.hasNext()) {
            coll.remove(cursor.next());
        }
    } finally {
        cursor.close();
    }
}

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From source file:com.zjy.mongo.splitter.MongoCollectionSplitter.java

License:Apache License

/**
 * Contacts the config server and builds a map of each shard's name to its
 * host(s) by examining config.shards./*w  w  w  .  j av a  2  s  . co m*/
 * @return a Map of shard name onto shard hostnames
 */
protected Map<String, String> getShardsMap() {
    DBCursor cur = null;
    HashMap<String, String> shardsMap = new HashMap<String, String>();
    DB configDB = null;
    try {
        configDB = getConfigDB();
        DBCollection shardsCollection = configDB.getCollection("shards");
        cur = shardsCollection.find();
        while (cur.hasNext()) {
            final BasicDBObject row = (BasicDBObject) cur.next();
            String host = row.getString("host");
            // for replica sets host will look like: "setname/localhost:20003,localhost:20004"
            int slashIndex = host.indexOf('/');
            if (slashIndex > 0) {
                host = host.substring(slashIndex + 1);
            }
            shardsMap.put((String) row.get("_id"), host);
        }
    } finally {
        if (cur != null) {
            cur.close();
        }
    }
    return shardsMap;
}

---

From source file:com.zjy.mongo.splitter.StandaloneMongoSplitter.java

License:Apache License

@Override
public List<InputSplit> calculateSplits() throws SplitFailedException {
    final DBObject splitKey = MongoConfigUtil.getInputSplitKey(getConfiguration());
    final DBObject splitKeyMax = MongoConfigUtil.getMaxSplitKey(getConfiguration());
    final DBObject splitKeyMin = MongoConfigUtil.getMinSplitKey(getConfiguration());
    final int splitSize = MongoConfigUtil.getSplitSize(getConfiguration());
    final MongoClientURI inputURI;
    DBCollection inputCollection = null;
    final ArrayList<InputSplit> returnVal;
    try {/*from  w  w w  . jav a 2s  . com*/
        inputURI = MongoConfigUtil.getInputURI(getConfiguration());
        MongoClientURI authURI = MongoConfigUtil.getAuthURI(getConfiguration());
        if (authURI != null) {
            inputCollection = MongoConfigUtil.getCollectionWithAuth(inputURI, authURI);
        } else {
            inputCollection = MongoConfigUtil.getCollection(inputURI);
        }

        returnVal = new ArrayList<InputSplit>();
        final String ns = inputCollection.getFullName();

        if (LOG.isDebugEnabled()) {
            LOG.debug(String.format("Running splitVector on namespace: %s.%s; hosts: %s",
                    inputURI.getDatabase(), inputURI.getCollection(), inputURI.getHosts()));
        }
        final DBObject cmd = BasicDBObjectBuilder.start("splitVector", ns).add("keyPattern", splitKey)
                .add("min", splitKeyMin).add("max", splitKeyMax)
                // force:True is misbehaving it seems
                .add("force", false).add("maxChunkSize", splitSize).get();

        CommandResult data;
        boolean ok = true;
        try {
            data = inputCollection.getDB().getSisterDB(inputURI.getDatabase()).command(cmd,
                    ReadPreference.primary());
        } catch (final MongoException e) { // 2.0 servers throw exceptions rather than info in a CommandResult
            data = null;
            LOG.info(e.getMessage(), e);
            if (e.getMessage().contains("unrecognized command: splitVector")) {
                ok = false;
            } else {
                throw e;
            }
        }

        if (data != null) {
            if (data.containsField("$err")) {
                throw new SplitFailedException("Error calculating splits: " + data);
            } else if (!data.get("ok").equals(1.0)) {
                ok = false;
            }
        }

        if (!ok) {
            final CommandResult stats = inputCollection.getStats();
            if (stats.containsField("primary")) {
                final DBCursor shards = inputCollection.getDB().getSisterDB("config").getCollection("shards")
                        .find(new BasicDBObject("_id", stats.getString("primary")));
                try {
                    if (shards.hasNext()) {
                        final DBObject shard = shards.next();
                        final String host = ((String) shard.get("host")).replace(shard.get("_id") + "/", "");
                        final MongoClientURI shardHost;
                        if (authURI != null) {
                            shardHost = new MongoClientURIBuilder(authURI).host(host).build();
                        } else {
                            shardHost = new MongoClientURIBuilder(inputURI).host(host).build();
                        }
                        MongoClient shardClient = null;
                        try {
                            shardClient = new MongoClient(shardHost);
                            data = shardClient.getDB(shardHost.getDatabase()).command(cmd,
                                    ReadPreference.primary());
                        } catch (final Exception e) {
                            LOG.error(e.getMessage(), e);
                        } finally {
                            if (shardClient != null) {
                                shardClient.close();
                            }
                        }
                    }
                } finally {
                    shards.close();
                }
            }
            if (data != null && !data.get("ok").equals(1.0)) {
                throw new SplitFailedException("Unable to calculate input splits: " + data.get("errmsg"));
            }

        }

        // Comes in a format where "min" and "max" are implicit
        // and each entry is just a boundary key; not ranged
        final BasicDBList splitData = (BasicDBList) data.get("splitKeys");

        if (splitData.size() == 0) {
            LOG.warn(
                    "WARNING: No Input Splits were calculated by the split code. Proceeding with a *single* split. Data may be too"
                            + " small, try lowering 'mongo.input.split_size' if this is undesirable.");
        }

        BasicDBObject lastKey = null; // Lower boundary of the first min split

        // If splitKeyMin was given, use it as first boundary.
        if (!splitKeyMin.toMap().isEmpty()) {
            lastKey = new BasicDBObject(splitKeyMin.toMap());
        }
        for (final Object aSplitData : splitData) {
            final BasicDBObject currentKey = (BasicDBObject) aSplitData;
            returnVal.add(createSplitFromBounds(lastKey, currentKey));
            lastKey = currentKey;
        }

        BasicDBObject maxKey = null;
        // If splitKeyMax was given, use it as last boundary.
        if (!splitKeyMax.toMap().isEmpty()) {
            maxKey = new BasicDBObject(splitKeyMax.toMap());
        }
        // Last max split
        final MongoInputSplit lastSplit = createSplitFromBounds(lastKey, maxKey);
        returnVal.add(lastSplit);
    } finally {
        if (inputCollection != null) {
            MongoConfigUtil.close(inputCollection.getDB().getMongo());
        }
    }

    return returnVal;
}

---

From source file:ConecteMongoDB.Consultas.java

public ArrayList<Hero> buscaHero(String hero) {
    ArrayList<Hero> resultados = new ArrayList<>();

    DBCollection colecao = MongoConnection.getInstance().getDB().getCollection("heroesdata");
    BasicDBObject query = new BasicDBObject("Title", hero);
    DBCursor cursor;

    cursor = colecao.find(query);//from ww w  . j  av  a  2  s.  c  o m
    try {
        while (cursor.hasNext()) {
            DBObject obj = cursor.next();
            String nome = (String) obj.get("Title");
            String lore = (String) obj.get("Lore");
            String sider = (String) obj.get("Side");
            String url = (String) obj.get("Url");
            Hero novoHero = new Hero(nome, lore, sider, url);
            resultados.add(novoHero);
        }
    } finally {
        cursor.close();
    }

    return resultados;
}

---

From source file:ConecteMongoDB.Consultas.java

public ArrayList<Hero> buscaSide(String side) {
    ArrayList<Hero> resultados = new ArrayList<>();
    DBCollection colecao = MongoConnection.getInstance().getDB().getCollection("heroesdata");
    BasicDBObject query = new BasicDBObject("Side", side);
    DBCursor cursor;

    cursor = colecao.find(query).sort(new BasicDBObject("Initial" + "." + "Strength", -1));

    try {/* w  w  w .  ja  v a 2s. c o m*/
        while (cursor.hasNext()) {
            DBObject obj = cursor.next();
            String nome = (String) obj.get("Title");
            String lore = (String) obj.get("Lore");
            String sider = (String) obj.get("Side");
            String url = (String) obj.get("Url");
            Hero novoHero = new Hero(nome, lore, sider, url);
            resultados.add(novoHero);
        }
    } finally {
        cursor.close();
    }
    //System.out.println(colecao.count(query));
    //System.out.println(resultados.size());

    return resultados;
}

---

From source file:ConecteMongoDB.Consultas.java

public ArrayList<Hero> buscaFunction(String function) {
    ArrayList<Hero> resultados = new ArrayList<>();
    DBCollection colecao = MongoConnection.getInstance().getDB().getCollection("heroesdata");

    DBCursor cursor;

    BasicDBObject query = new BasicDBObject("SuggestedRoleLevels" + "." + function,
            new BasicDBObject("$gt", 1));

    cursor = colecao.find(query).sort(new BasicDBObject("SuggestedRoleLevels" + "." + function, -1));

    try {//from w w  w  .  ja  v a2 s  . c  o  m
        while (cursor.hasNext()) {
            DBObject obj = cursor.next();
            String nome = (String) obj.get("Title");
            String lore = (String) obj.get("Lore");
            String sider = (String) obj.get("Side");
            String url = (String) obj.get("Url");
            Hero novoHero = new Hero(nome, lore, sider, url);
            resultados.add(novoHero);
        }
    } finally {
        cursor.close();
    }
    return resultados;
}

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