List of usage examples for com.mongodb DBCursor hasNext
@Override public boolean hasNext()
From source file:com.cyslab.craftvm.rest.mongo.QueryServlet.java
License:GNU General Public License
@Override protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { log.trace("doPost()"); // server auth if (!can_read(req)) { res.sendError(SC_UNAUTHORIZED);// www . j a v a2 s .c o m return; } String ret = null; 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; } } String skip = req.getParameter("skip"); String limit = req.getParameter("limit"); String _fields = req.getParameter("fields"); String fields[] = null; if (_fields != null) fields = _fields.split("[,]"); 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); StringBuilder buf = tl.get(); // reset buf buf.setLength(0); 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); if (cache != null) { buf.append(db_name); buf.append(col_name); buf.append(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; } if (cache != null) buf.append(data); } } finally { if (r != null) r.close(); } // limit int lim; if (limit != null) { try { lim = Math.min(Integer.parseInt(limit), MAX_FIELDS_TO_RETURN); } catch (NumberFormatException e) { error(res, SC_BAD_REQUEST, Status.get("can not parse limit")); return; } } else { lim = MAX_FIELDS_TO_RETURN; } if (cache != null) { buf.append(";limit="); buf.append(lim); } // skip int sk = -1; if (skip != null) { try { sk = Integer.parseInt(skip); if (cache != null) { buf.append(";skip="); buf.append(sk); } } catch (NumberFormatException e) { error(res, SC_BAD_REQUEST, Status.get("can not parse skip")); return; } } // fields if (cache != null && _fields != null) { buf.append(";fields="); buf.append(_fields); } // from cache String cache_key = null; if (cache != null) { cache_key = buf.toString(); try { ret = (String) cache.get(cache_key); } // some wrong char in key catch (IllegalArgumentException e) { int l = buf.length(); for (int i = 0; i < l; i++) { if (buf.charAt(i) == ' ') buf.setCharAt(i, '*'); } cache_key = buf.toString(); ret = (String) cache.get(cache_key); } if (ret != null) { out_str(req, ret, "application/json"); return; } } // cursor DBCursor c; if (fields != null) { StringBuilder sb = new StringBuilder(); sb.append("{"); int len = fields.length; for (int i = 0; i < len; i++) { String s = fields[i]; sb.append('"'); sb.append(s); sb.append('"'); sb.append(":1"); if (i != (len - 1)) sb.append(","); } sb.append("}"); c = col.find(q, (DBObject) JSON.parse(sb.toString())); } else c = col.find(q); if (c == null || c.count() == 0) { error(res, SC_NOT_FOUND, Status.get("no documents found")); return; } if (sort != null) c.sort(sort); res.setIntHeader("X-Documents-Count", c.count()); c.limit(lim); if (sk != -1) c.skip(sk); // 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(']'); res.setIntHeader("X-Documents-Returned", no); ret = buf.toString(); if (cache != null) cache.set(cache_key, ret); out_str(req, ret, "application/json"); }
From source file:com.cyslab.craftvm.rest.mongo.QueryServlet.java
License:GNU General Public License
@Override protected void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { log.trace("doGet()"); if (!can_read(req)) { res.sendError(SC_UNAUTHORIZED);//from w w w . j av a2s.com return; } 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; } } String skip = req.getParameter("skip"); String limit = req.getParameter("limit"); 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); DBCursor c = col.find(); if (c == null || c.count() == 0) { 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(); 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(']'); res.setIntHeader("X-Documents-Returned", no); out_str(req, buf.toString(), "application/json"); }
From source file:com.cyslab.craftvm.rest.mongo.WriteServlet.java
License:GNU General Public License
@Override protected void doDelete(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { log.trace("doDelete()"); if (!can_write(req)) { res.sendError(SC_UNAUTHORIZED);//from w ww .j a v a 2s .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) { 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.cyslab.craftvm.rest.mongo.WriteServlet.java
License:GNU General Public License
@Override protected void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { log.trace("doPost()"); if (!can_write(req)) { res.sendError(SC_UNAUTHORIZED);//from w ww. ja va2 s. 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; _writer.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.warn("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.damanzano.mongohw2_2.MongoHW2_2.java
public static void main(String[] args) throws UnknownHostException { MongoClient client = new MongoClient(); DB db = client.getDB("students"); DBCollection collection = db.getCollection("grades"); DBCursor allGrades = collection.find(new BasicDBObject("type", "homework")) .sort(new BasicDBObject("student_id", 1).append("score", 1)); try {// ww w. ja va 2s. com String studentId = ""; while (allGrades.hasNext()) { DBObject grade = allGrades.next(); System.out.println(grade); if (!studentId.equalsIgnoreCase(((Integer) grade.get("student_id")).toString())) { System.out.println("Deleting grade " + grade.get("_id").toString() + " for student " + grade.get("student_id").toString()); collection.remove(grade); } studentId = ((Integer) grade.get("student_id")).toString(); } } finally { allGrades.close(); } }
From source file:com.daprota.m2.manager.MongoManager.java
License:Apache License
/** * Retrieves user via spceified userName. * * @param userName A user's userName.//from w ww. j a v a2 s . c o m * @return user if exists. Otherwise returns null. */ public User findUserByUserName(String userName) throws MongoException { DBCursor dbCur = null; try { // get a user collection DBCollection coll = _db.getCollection("user"); DBObject query = new BasicDBObject("userName", userName); dbCur = coll.find(query); boolean hasNext; try { logger.debug("Call dbCur.hasNext()."); hasNext = dbCur.hasNext(); } catch (MongoException ex) { logger.error("Search for user {} failed.\n" + ex.toString(), userName); throw new MongoException("Search for user " + userName + " failed."); } if (hasNext) { DBObject user = dbCur.next(); ArrayList<BasicDBObject> roles = (ArrayList<BasicDBObject>) user.get("roles"); ArrayList<Role> roles2 = new ArrayList<Role>(); if (roles != null) { for (BasicDBObject role : roles) { Role role3 = new Role(role.get("_id").toString(), (String) role.get("name"), (String) role.get("description")); roles2.add(role3); } logger.debug("User {} roles added.", userName); } return (new User(user.get("_id").toString(), (String) user.get("userName"), (String) user.get("password"), roles2)); } else { logger.warn("User {} could not be found", userName); return null; } } catch (MongoException ex) { logger.error("Search for user {} failed.\n" + ex.toString(), userName); throw new MongoException("Search for user " + userName + " failed."); } finally { dbCur.close(); } }
From source file:com.data.DAO.MetodoPagoDAO.java
public static ArrayList consultarRecibo(Integer idMetodoPago) { ArrayList reciboConsulta = new ArrayList(); try {/* w w w . j a v a2s.c o m*/ // To connect to mongo dbserver MongoClient mongoClient = new MongoClient("localhost", 27017); // Now connect to your databases DB db = mongoClient.getDB("hoex"); System.out.println("Connect to database successfully"); // Use an especific collection DBCollection coll = db.getCollection("Metodo_pago"); System.out.println("Collection Metodo_pago selected successfully"); BasicDBObject whereQuery = new BasicDBObject(); // Sentence to search one account number whereQuery.put("idMetodoPago", idMetodoPago); DBCursor cursor = coll.find(whereQuery); while (cursor.hasNext()) { DBObject consultDocument = cursor.next(); reciboConsulta.add(consultDocument.get("descripcion")); reciboConsulta.add(consultDocument.get("cuotas")); reciboConsulta.add(consultDocument.get("precio")); reciboConsulta.add(consultDocument.get("idReserva")); } System.out.println("Document consulted successfully"); } catch (Exception e) { System.err.println(e.getClass().getName() + ": " + e.getMessage()); } if (!reciboConsulta.isEmpty()) { return reciboConsulta; } else { return null; } }
From source file:com.data.DAO.MetodoPagoDAO.java
public static String actualizarRecibo(Integer idMetodoPago, String descripcion, Integer cuotas, float precio, Integer idReserva) {/*from ww w . j a v a 2 s . c o m*/ String reciboActualizar = null; try { // To connect to mongo dbserver MongoClient mongoClient = new MongoClient("localhost", 27017); // Now connect to your databases DB db = mongoClient.getDB("hoex"); System.out.println("Connect to database successfully"); DBCollection coll = db.getCollection("Metodo_pago"); System.out.println("Collection Metodo_pago selected successfully"); BasicDBObject whereQuery = new BasicDBObject(); whereQuery.put("idMetodoPago", idMetodoPago); DBCursor cursor = coll.find(whereQuery); while (cursor.hasNext()) { DBObject updateDocument = cursor.next(); updateDocument.put("descripcion", descripcion); updateDocument.put("cuotas", cuotas); updateDocument.put("precio", precio); updateDocument.put("idReserva", idReserva); coll.update(whereQuery, updateDocument); } System.out.println("Document updated successfully"); reciboActualizar = "Success"; } catch (Exception e) { System.err.println(e.getClass().getName() + ": " + e.getMessage()); } if (reciboActualizar != null) { return "El recibo se ha actualizado correctamente!"; } else { return "El recibo no se ha actualizado!"; } }
From source file:com.datatorrent.contrib.mongodb.MongoDBOutputOperator.java
License:Open Source License
/** * init last completed windowId information with operatorId, read from maxWindowTable. * If the table is empty, insert a default value document */// w w w . ja v a 2 s . co m public void initLastWindowInfo() { maxWindowCollection = db.getCollection(maxWindowTable); BasicDBObject query = new BasicDBObject(); query.put(operatorIdColumnName, operatorId); // query.put(applicationIdName, "0"); DBCursor cursor = maxWindowCollection.find(query); if (cursor.hasNext()) { Object obj = cursor.next().get(windowIdColumnName); lastWindowId = (Long) obj; } else { BasicDBObject doc = new BasicDBObject(); doc.put(windowIdColumnName, (long) 0); // doc.put(applicationIdName, 0); doc.put(operatorIdColumnName, operatorId); maxWindowCollection.save(doc); } System.out.println("last windowid:" + lastWindowId); }
From source file:com.dawsonsystems.session.MongoSessionManager.java
License:Apache License
public String[] keys() throws IOException { BasicDBObject restrict = new BasicDBObject(); restrict.put("_id", 1); DBCursor cursor = getCollection().find(new BasicDBObject(), restrict); List<String> ret = new ArrayList<String>(); while (cursor.hasNext()) { ret.add(cursor.next().get("").toString()); }/*from w ww .j a v a2 s . c o m*/ return ret.toArray(new String[ret.size()]); }