Example usage for com.mongodb DBCollection find

List of usage examples for com.mongodb DBCollection find

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Introduction

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

Prototype

public DBCursor find(final DBObject query)

Source Link

Document

Select documents in collection and get a cursor to the selected documents.

Usage

From source file:cn.vlabs.clb.server.storage.mongo.MongoStorageService.java

License:Apache License

public String queryMd5(String storageKey, String tableName) {
    DB db = options.getCollection(TABLE_TEMP_KEY).getDB();
    DBObject query = new BasicDBObject();
    query.put("storageKey", new ObjectId(storageKey));
    DBCollection fileTable = db.getCollection(tableName + ".files");
    DBCursor cursor = fileTable.find(query);
    if (cursor.hasNext()) {
        DBObject o = cursor.next();/*from w w w  . ja v  a 2 s. co m*/
        return o.get("md5").toString();
    }
    return "";
}

From source file:co.edu.uniandes.csw.Arquidalgos.usuario.persistence._UsuarioPersistence.java

License:MIT License

@SuppressWarnings("unchecked")
public List<UsuarioDTO> getUsuarios() {
    //      Query q = entityManager.createQuery("select u from UsuarioEntity u");
    //      return UsuarioConverter.entity2PersistenceDTOList(q.getResultList());

    List listaUsuarios = new ArrayList();
    DBCollection coll = db.getCollection("UsuarioDTO");
    BasicDBObject query = new BasicDBObject();
    DBCursor cursor = coll.find(query);
    while (cursor.hasNext()) {
        DBObject dBObject = cursor.next();
        UsuarioDTO user = new UsuarioDTO();
        user.setName((String) dBObject.get("name"));
        user.setContrasena((String) dBObject.get("contrasena"));
        user.setEmail((String) dBObject.get("email"));
        user.setFacebookId((String) dBObject.get("facebookId"));

        //TODO imprimir usuarios
        listaUsuarios.add(user);//from w w  w .  ja va2  s.  co m
    }
    cursor.close();
    return listaUsuarios;

}

From source file:com.aankam.servlet.MongoCrudServlet.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods./* www .  j a va  2  s. c  o m*/
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    MongoClientURI uri = new MongoClientURI("mongodb://Username:Pasword@ds061721.mongolab.com:61721/cs612");
    MongoClient client = new MongoClient(uri);
    DB db = client.getDB(uri.getDatabase());

    response.setContentType("text/html;charset=UTF-8");

    String serialNo = request.getParameter("serialNo");
    String name = request.getParameter("name");
    String emailId = request.getParameter("emailId");
    String operation = request.getParameter("operation");

    BasicDBObject customer;
    BasicDBObject updateQuery;
    BasicDBObject deleteQuery;
    BasicDBObject searchQuery;
    DBCollection customersCollection;
    customersCollection = db.getCollection("Customers");
    DBObject searchResult = null;
    boolean flag = false;
    DBCursor cursor;
    switch (operation) {
    case "create":
        customer = new BasicDBObject();
        customer.put("serialNo", serialNo);
        customer.put("name", name);
        customer.put("emailId", emailId);
        customersCollection.insert(customer);
        break;
    case "update":
        updateQuery = new BasicDBObject();
        updateQuery.append("serialNo", serialNo);
        cursor = customersCollection.find(updateQuery);
        customer = new BasicDBObject();
        customer.put("serialNo", serialNo);
        customer.put("name", name);
        customer.put("emailId", emailId);
        if (cursor.hasNext()) {
            customersCollection.update(updateQuery, customer);
            flag = true;
        }

        break;
    case "delete":
        deleteQuery = new BasicDBObject();
        deleteQuery.append("serialNo", serialNo);
        customersCollection.remove(deleteQuery);
        break;
    case "search":
        searchQuery = new BasicDBObject();
        searchQuery.append("serialNo", serialNo);
        cursor = customersCollection.find(searchQuery);
        while (cursor.hasNext()) {
            searchResult = cursor.next();
        }
        break;
    default:
        break;

    }
    try (PrintWriter out = response.getWriter()) {
        /* TODO output your page here. You may use following sample code. */
        out.println("<!DOCTYPE html>");
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet MongoCrudServlet</title>");
        out.println("</head>");
        out.println("<body>");

        switch (operation) {
        case "create":
            out.println("<h3>Customer was successfully created.</h3>");
            break;
        case "update":
            if (flag == true) {
                out.println("<h3>Customer was successfully updated.</h3>");
            } else {
                out.println("<h3>Customer was not found to update.</h3>");
            }

            break;
        case "delete":
            out.println("<h3>Customer was successfully deleted.</h3>");
            break;
        case "search":
            if (searchResult != null) {
                out.println("<h3>The following customer was found:</h3>");
                out.println("<h4>Serial No :" + searchResult.get("serialNo") + "</h4>");
                out.println("<h4>Name :" + searchResult.get("name") + "</h4>");
                out.println("<h4>Email Id :" + searchResult.get("emailId") + "</h4>");
            } else {
                out.println("<h3>Customer not found.</h3>");
            }
            break;
        default:
            break;
        }
        out.println("<a href=\"index.html\">Back to Main Form</a>");
        out.println("</body>");
        out.println("</html>");
    }
}

From source file:com.AlertMailerWebPage.servlet.Show.java

/**
 * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
 * methods./*from   www.  ja v  a2 s .  com*/
 *
 * @param request servlet request
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html;charset=UTF-8");
    try (PrintWriter out = response.getWriter()) {
        Properties defaultProps = new Properties();
        InputStream in = GetProcessSpeed.class.getResourceAsStream("configuration.properties");
        defaultProps.load(in);
        in.close();
        String database = (String) defaultProps.get("database_mailerDetails");
        String collection = (String) defaultProps.get("collection_mailerDetails");
        String serverAddress = (String) defaultProps.get("IP_AMDBoard");

        Mongo mongo = new Mongo("localhost", 27017);
        //   Mongo mongo=new Mongo(serverAddress,27017);
        //DB db = mongo.getDB("dashboard" );
        DB db = mongo.getDB(database);

        DBCollection coll = db.getCollection(collection);
        //DBCollection coll=db.getCollection("users");
        DBObject query = new BasicDBObject("AlertMailer", "PRS");
        DBObject query1 = new BasicDBObject("InsertTime", -1);
        //DBObject query = new BasicDBObject("_id",-1);
        DBCursor cursor = coll.find(query).sort(query1).limit(1);

        //String name1= (String)cursor.one().get("name");    
        //while(cursor.hasNext()){
        //    out.println(""+cursor.next()+"");
        //}
        response.setContentType("text/plain");
        response.setCharacterEncoding("UTF-8");
        response.getWriter().write(cursor.one().toString());
    }
}

From source file:com.andreig.jetty.AggregateServlet.java

License:GNU General Public License

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doPost()");

    if (!can_read(req)) {
        res.sendError(SC_UNAUTHORIZED);//  ww  w . j a va  2  s  . co m
        return;
    }

    InputStream is = req.getInputStream();
    String db_name = req.getParameter("dbname");
    String col_name = req.getParameter("colname");
    if (db_name == null || col_name == null) {
        error(res, SC_BAD_REQUEST, Status.get("param name missing"));
        return;
    }
    String skip = req.getParameter("skip");
    String limit = req.getParameter("limit");

    DB db = mongo.getDB(db_name);
    DBCollection col = db.getCollection(col_name);

    BufferedReader r = null;
    DBObject q = null, sort = null;
    try {

        r = new BufferedReader(new InputStreamReader(is));
        String data = r.readLine();
        if (data == null) {
            error(res, SC_BAD_REQUEST, Status.get("no data"));
            return;
        }
        try {
            q = (DBObject) JSON.parse(data);
        } catch (JSONParseException e) {
            error(res, SC_BAD_REQUEST, Status.get("can not parse data"));
            return;
        }
        // sort param
        data = r.readLine();
        if (data != null) {
            try {
                sort = (DBObject) JSON.parse(data);
            } catch (JSONParseException e) {
                error(res, SC_BAD_REQUEST, Status.get("can not parse sort arg"));
                return;
            }
        }

    } finally {
        if (r != null)
            r.close();
    }

    DBCursor c;
    if (sort == null)
        c = col.find(q);
    else
        c = col.find(q).sort(sort);
    if (c == null) {
        error(res, SC_NOT_FOUND, Status.get("no documents found"));
        return;
    }

    res.setIntHeader("X-Documents-Count", c.count());

    if (limit != null) {
        try {
            c.limit(Math.min(Integer.parseInt(limit), MAX_FIELDS_TO_RETURN));
        } catch (NumberFormatException e) {
            error(res, SC_BAD_REQUEST, Status.get("can not parse limit"));
            c.close();
            return;
        }
    } else
        c.limit(MAX_FIELDS_TO_RETURN);

    if (skip != null) {
        try {
            c.skip(Integer.parseInt(skip));
        } catch (NumberFormatException e) {
            error(res, SC_BAD_REQUEST, Status.get("can not parse skip"));
            c.close();
            return;
        }
    }

    StringBuilder buf = tl.get();
    // reset buf
    buf.setLength(0);

    int no = 0;
    buf.append("[");
    while (c.hasNext()) {

        DBObject o = c.next();
        JSON.serialize(o, buf);
        buf.append(",");
        no++;

    }

    if (no > 0)
        buf.setCharAt(buf.length() - 1, ']');
    else
        buf.append(']');

    res.setIntHeader("X-Documents-Returned", no);

    out_str(req, buf.toString(), "application/json");

}

From source file:com.andreig.jetty.SearchServlet.java

License:GNU General Public License

private String search2mongo(Document hits[], DBCollection col) {

    List<ObjectId> values = new ArrayList<ObjectId>();
    for (Document hit : hits) {
        String _id = hit.get("_id");
        ObjectId oid = ObjectId.massageToObjectId(_id);
        values.add(oid);/*w  ww  . ja  v a2 s .co m*/
    }

    BasicDBObject q = new BasicDBObject();
    q.put("_id", new BasicDBObject("$in", values));

    DBCursor c = col.find(q);
    if (c == null || c.count() == 0) {
        return null;
    }

    StringBuilder buf = tl.get();
    // reset buf
    buf.setLength(0);

    int no = 0;
    buf.append("[");
    while (c.hasNext()) {

        DBObject o = c.next();
        if (rm_id)
            o.removeField("_id");
        JSON.serialize(o, buf);
        buf.append(",");
        no++;

    }
    c.close();

    if (no > 0)
        buf.setCharAt(buf.length() - 1, ']');
    else
        buf.append(']');

    return buf.toString();

}

From source file:com.andreig.jetty.WriteServlet.java

License:GNU General Public License

@Override
protected void doDelete(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doDelete()");

    if (!can_write(req)) {
        res.sendError(SC_UNAUTHORIZED);//from ww  w  . j ava 2 s.c  om
        return;
    }

    InputStream is = req.getInputStream();
    String db_name = req.getParameter("dbname");
    String col_name = req.getParameter("colname");
    if (db_name == null || col_name == null) {
        String names[] = req2mongonames(req);
        if (names != null) {
            db_name = names[0];
            col_name = names[1];
        }
        if (db_name == null || col_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }
    }

    DB db = mongo.getDB(db_name);

    // mongo auth
    String user = req.getParameter("user");
    String passwd = req.getParameter("passwd");
    if (user != null && passwd != null && (!db.isAuthenticated())) {
        boolean auth = db.authenticate(user, passwd.toCharArray());
        if (!auth) {
            res.sendError(SC_UNAUTHORIZED);
            return;
        }
    }

    DBCollection col = db.getCollection(col_name);

    BufferedReader r = null;
    DBObject q = null;
    try {

        r = new BufferedReader(new InputStreamReader(is));
        String data = r.readLine();
        if (data == null) {
            error(res, SC_BAD_REQUEST, Status.get("no data"));
            return;
        }
        try {
            q = (DBObject) JSON.parse(data);
        } catch (JSONParseException e) {
            error(res, SC_BAD_REQUEST, Status.get("can not parse data"));
            return;
        }

    } finally {
        if (r != null)
            r.close();
    }

    // search
    if (do_search) {

        DBCursor c = col.find(q);
        long l = c.count();
        String todelete[] = new String[(int) l];
        int n = 0;

        while (c.hasNext()) {

            DBObject o = c.next();
            ObjectId oid = (ObjectId) o.get("_id");
            String id = oid.toStringMongod();
            todelete[n++] = id;

        }
        c.close();
        search.get_writer().delete(todelete);

    }

    WriteResult wr = col.remove(q, write_concern);

    // return operation status
    if (do_return) {
        out_str(req, wr.toString());
        if (wr.getError() == null) {
            res.setStatus(SC_BAD_REQUEST);
            return;
        }
    }

    res.setStatus(SC_OK);

}

From source file:com.andreig.jetty.WriteServlet.java

License:GNU General Public License

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {

    log.fine("doPost()");

    if (!can_write(req)) {
        res.sendError(SC_UNAUTHORIZED);/* ww  w. j  a v  a 2s .  c o  m*/
        return;
    }

    InputStream is = req.getInputStream();
    String db_name = req.getParameter("dbname");
    String col_name = req.getParameter("colname");
    if (db_name == null || col_name == null) {
        String names[] = req2mongonames(req);
        if (names != null) {
            db_name = names[0];
            col_name = names[1];
        }
        if (db_name == null || col_name == null) {
            error(res, SC_BAD_REQUEST, Status.get("param name missing"));
            return;
        }
    }

    boolean upsert = Boolean.parseBoolean(req.getParameter("upsert"));
    boolean multi = Boolean.parseBoolean(req.getParameter("multi"));

    DB db = mongo.getDB(db_name);

    // mongo auth
    String user = req.getParameter("user");
    String passwd = req.getParameter("passwd");
    if (user != null && passwd != null && (!db.isAuthenticated())) {
        boolean auth = db.authenticate(user, passwd.toCharArray());
        if (!auth) {
            res.sendError(SC_UNAUTHORIZED);
            return;
        }
    }

    DBCollection col = db.getCollection(col_name);

    BufferedReader r = null;
    DBObject q = null, o = null;
    try {

        r = new BufferedReader(new InputStreamReader(is));
        String q_s = r.readLine();
        if (q_s == null) {
            error(res, SC_BAD_REQUEST, Status.get("no data"));
            return;
        }
        String o_s = r.readLine();
        if (o_s == null) {
            error(res, SC_BAD_REQUEST, Status.get("obj to update missing"));
            return;
        }
        try {
            q = (DBObject) JSON.parse(q_s);
            o = (DBObject) JSON.parse(o_s);
        } catch (JSONParseException e) {
            error(res, SC_BAD_REQUEST, Status.get("can not parse data"));
            return;
        }

    } finally {
        if (r != null)
            r.close();
    }
    //
    // search
    if (do_search) {

        String fn = col.getFullName();
        DBCursor c = col.find(q);
        int cnt = c.count();
        if (!multi)
            c.limit(1);
        long l = multi ? cnt : 1;
        String toupdate[] = new String[(int) l];
        int n = 0;
        boolean insert = false;

        if (upsert && !multi && cnt == 0)
            insert = true;

        while (c.hasNext()) {

            DBObject _o = c.next();
            ObjectId oid = (ObjectId) _o.get("_id");
            String id = oid.toStringMongod();
            toupdate[n++] = id;

        }
        c.close();

        List<String> flds = Config.search_index_fields.get(fn);
        boolean commit = false;
        Document doc = null;
        Search _writer = search.get_writer();
        if (flds != null && flds.size() > 0) {
            doc = new Document();
            try {
                for (String fld : flds) {
                    String val = (String) o.get(fld);
                    if (val == null)
                        continue;
                    Search.add_searchable_s(doc, fld, val);
                    commit = true;
                }
                if (commit)
                    _writer.commit(doc);
            } catch (ClassCastException e) {
                error(res, SC_BAD_REQUEST, Status.get("searchable fields must be type String"));
                return;
            } catch (CorruptIndexException e) {
                error(res, SC_BAD_REQUEST, Status.get("Search corrupt index" + e));
                return;
            }
        }
        if (commit && insert)
            log.warning("upsert with search not implemented yet");
        else
            _writer.update(toupdate, doc);

    }

    WriteResult wr = col.update(q, o, upsert, multi, write_concern);

    // return operation status
    if (do_return) {
        out_str(req, wr.toString());
        if (wr.getError() == null) {
            res.setStatus(SC_BAD_REQUEST);
            return;
        }
    }

    res.setStatus(SC_CREATED);

}

From source file:com.aperigeek.dropvault.web.dao.MongoFileService.java

License:Open Source License

public List<Resource> getChildren(Resource resource) {
    DBCollection col = mongo.getDataBase().getCollection("files");

    DBObject filter = new BasicDBObject();
    filter.put("parent", resource.getId());

    List<Resource> children = new ArrayList<Resource>();

    DBCursor cursor = col.find(filter);
    while (cursor.hasNext()) {
        children.add(buildResource(cursor.next()));
    }/*w ww .  j  av a 2 s.  c  o  m*/

    return children;
}

From source file:com.apifest.oauth20.MongoDBManager.java

License:Apache License

@SuppressWarnings("unchecked")
@Override/*from w ww  .j  a va2 s .  c o  m*/
public AccessToken findAccessToken(String accessToken) {
    BasicDBObject dbObject = new BasicDBObject();
    dbObject.put(ACCESS_TOKEN_ID_NAME, accessToken);
    dbObject.put(VALID_NAME, true);
    DBCollection coll = db.getCollection(ACCESS_TOKEN_COLLECTION_NAME);
    List<DBObject> list = coll.find(dbObject).toArray();
    if (list.size() > 1) {
        // throw exception
        log.warn("Several access tokens found");
        return null;
    }
    if (list.size() > 0) {
        Map<String, Object> mapLoaded = list.get(0).toMap();
        // convert details map to String
        if (mapLoaded.get("details") instanceof BasicDBObject) {
            BasicDBObject details = (BasicDBObject) mapLoaded.get("details");
            mapLoaded.put("details", details.toString());
        }
        return AccessToken.loadFromMap(mapLoaded);
    } else {
        log.debug("No access token found");
        return null;
    }
}