Example usage for com.mongodb.client MongoCursor hasNext

Introduction

In this page you can find the example usage for com.mongodb.client MongoCursor hasNext.

Prototype

@Override
    boolean hasNext();

Source Link

Usage

From source file:com.imaginea.mongodb.controllers.DocumentController.java

License:Apache License

/**
 * Maps GET Request to get all keys of document inside a collection inside a database present in
 * mongo db to a service function that returns the list. Also forms the JSON response for this
 * request and sent it to client. In case of any exception from the service files an error object
 * if formed.// w w w . j a  v a2  s. c  o  m
 *
 * @param dbName Name of Database
 * @param collectionName Name of Collection
 * @param connectionId Mongo Db Configuration provided by user to connect to.
 * @param request Get the HTTP request context to extract session parameters
 * @return A String of JSON format with all keys in a collection.
 */
@GET
@Path("/keys")
@Produces(MediaType.APPLICATION_JSON)
public String getKeysRequest(@PathParam("dbName") final String dbName,
        @PathParam("collectionName") final String collectionName, @QueryParam("allKeys") final Boolean allKeys,
        @QueryParam("connectionId") final String connectionId, @Context final HttpServletRequest request) {

    String response = new ResponseTemplate().execute(logger, connectionId, request, new ResponseCallback() {
        public Object execute() throws Exception {
            // Perform the operation here only.
            MongoClient mongoInstance = authService.getMongoInstance(connectionId);

            long count = mongoInstance.getDatabase(dbName).getCollection(collectionName).count();
            FindIterable<Document> findIterable = mongoInstance.getDatabase(dbName)
                    .getCollection(collectionName).find();
            if (!allKeys) {
                findIterable.limit(10);
            }
            MongoCursor<Document> cursor = findIterable.iterator();
            Set<String> completeSet = new HashSet<String>();
            if (cursor.hasNext()) {
                while (cursor.hasNext()) {
                    Document doc = cursor.next();
                    getNestedKeys(doc, completeSet, "");
                }
            }
            completeSet.remove("_id");
            JSONObject result = new JSONObject();
            result.put("keys", completeSet);
            result.put("count", count);
            return result;
        }
    });
    return response;
}

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From source file:com.imaginea.mongodb.services.impl.CollectionServiceImpl.java

License:Apache License

/**
 * Gets the list of collections present in a database in mongo to which user is connected to.
 *
 * @param dbName Name of database/*from w  w  w .j a va 2 s  . co m*/
 * @return List of All Collections present in MongoDb
 * @throws DatabaseException throw super type of UndefinedDatabaseException
 * @throws CollectionException exception while performing get list operation on collection
 */
public Set<String> getCollList(String dbName) throws DatabaseException, CollectionException {

    if (dbName == null || dbName.equals("")) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Invalid Database name");
    }

    try {
        // List<String> dbList = databaseService.getDbList();
        // if (!dbList.contains(dbName)) {
        //   throw new DatabaseException(ErrorCodes.DB_DOES_NOT_EXISTS,
        //       "Database with dbName [ " + dbName + "] does not exist");
        // }
        MongoIterable<String> listCollectionNames = mongoInstance.getDatabase(dbName).listCollectionNames();

        Set<String> collectionList = new HashSet<>();

        MongoCursor<String> iterator = listCollectionNames.iterator();

        while (iterator.hasNext()) {

            String colName = iterator.next();

            if (colName.contains(".files") || colName.contains(".chunks")) {
                continue;
            }

            collectionList.add(colName);

        }

        // For a newly added database there will be no system.users, So we
        // are manually creating the system.users
        if (collectionList.contains("system.indexes") && !collectionList.contains("system.users")) {
            mongoInstance.getDatabase(dbName).createCollection("system.users");
            collectionList.add("system.users");
        }
        return collectionList;
    } catch (MongoException m) {
        throw new CollectionException(ErrorCodes.GET_COLLECTION_LIST_EXCEPTION, m.getMessage());
    }
}

---

From source file:com.imaginea.mongodb.services.impl.CollectionServiceImpl.java

License:Apache License

/**
 * Deletes a collection inside a database in mongo to which user is connected to.
 *
 * @param dbName Name of Database in which to insert a collection
 * @param collectionName Name of Collection to be inserted
 * @return Success if deletion is successful else throw exception
 * @throws DatabaseException throw super type of UndefinedDatabaseException
 * @throws ValidationException throw super type of
 *         EmptyDatabaseNameException,EmptyCollectionNameException
 * @throws CollectionException throw super type of
 *         UndefinedCollectionException,DeleteCollectionException
 *//* ww  w  .  j a v a 2 s .com*/

private void createCollection(CreateCollectionOptions options, MongoCollection<Document> selectedCollection,
        String selectedCollectionName, MongoDatabase db) {
    db.createCollection(selectedCollectionName + "_temp", options);
    MongoCollection<Document> tempCollection = db.getCollection(selectedCollectionName + "_temp");

    MongoCursor<Document> cur = selectedCollection.find().iterator();
    while (cur.hasNext()) {
        Document obj = cur.next();
        tempCollection.insertOne(obj);
    }
    MongoNamespace namespace = selectedCollection.getNamespace();
    selectedCollection.drop();
    tempCollection.renameCollection(namespace);
}

---

From source file:com.imaginea.mongodb.services.impl.DatabaseServiceImpl.java

License:Apache License

/**
 * Gets the list of databases present in mongo database to which user is connected to.
 *
 * @return List of All Databases present in MongoDb
 * @throws DatabaseException If any error while getting database list.
 *//*from w ww.j  a v  a  2s.  c o m*/

public List<String> getDbList() throws DatabaseException {
    try {
        Set<String> authenticatedDbNames = connectionDetails.getAuthenticatedDbNames();
        if (!connectionDetails.isAdminLogin()) {
            return new ArrayList<String>(authenticatedDbNames);
        }
        List<String> dbs = new ArrayList<String>();
        MongoCursor<String> dbsCursor = mongoInstance.listDatabaseNames().iterator();
        while (dbsCursor.hasNext()) {
            dbs.add(dbsCursor.next());
        }
        return dbs;
    } catch (MongoException m) {
        throw new DatabaseException(ErrorCodes.GET_DB_LIST_EXCEPTION, m.getMessage());
    }
}

---

From source file:com.imaginea.mongodb.services.impl.DocumentServiceImpl.java

License:Apache License

/**
 * Insert a document inside a collection in a database in mongo to which user is connected to.
 *
 * @param dbName Name of Database//from ww  w .  java2 s  .  com
 * @param collectionName Name of Collection from which to get all Documents
 * @param document : Document data to be inserted
 * @return : Insertion Status
 * @throws DatabaseException throw super type of UndefinedDatabaseException
 * @throws ValidationException throw super type of
 *         EmptyDatabaseNameException,EmptyCollectionNameException ,EmptyDocumentDataException
 * @throws CollectionException throw super type of UndefinedCollectionException
 * @throws DocumentException throw super type of InsertDocumentException
 */

public String insertDocument(String dbName, String collectionName, Document document)
        throws DatabaseException, CollectionException, DocumentException, ValidationException {
    if (dbName == null) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database name is null");

    }
    if (dbName.equals("")) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database Name Empty");
    }

    if (collectionName == null) {
        throw new CollectionException(ErrorCodes.COLLECTION_NAME_EMPTY, "Collection name is null");
    }
    if (collectionName.equals("")) {
        throw new CollectionException(ErrorCodes.COLLECTION_NAME_EMPTY, "Collection Name Empty");
    }

    String result = null;
    try {
        // if (!databaseService.getDbList().contains(dbName)) {
        //   throw new DatabaseException(ErrorCodes.DB_DOES_NOT_EXISTS,
        //       "DB [" + dbName + "] DOES NOT EXIST");
        // }

        MongoCursor<String> iterator = mongoInstance.getDatabase(dbName).listCollectionNames().iterator();
        Set<String> collectionNames = null;
        if (iterator.hasNext()) {
            collectionNames = new HashSet<>();
            while (iterator.hasNext()) {
                collectionNames.add(iterator.next());
            }
        }

        if (!collectionNames.contains(collectionName)) {
            throw new CollectionException(ErrorCodes.COLLECTION_DOES_NOT_EXIST,
                    "COLLECTION [ " + collectionName + "] _DOES_NOT_EXIST in Db [ " + dbName + "]");
        }

        // MongoDb permits Duplicate document Insert
        mongoInstance.getDatabase(dbName).getCollection(collectionName).insertOne(document);
        result = "Inserted Document with Data : [" + document + "]";
    } catch (MongoException e) {
        throw new DocumentException(ErrorCodes.DOCUMENT_CREATION_EXCEPTION, e.getMessage());
    }
    return result;
}

---

From source file:com.imaginea.mongodb.services.impl.GridFSServiceImpl.java

License:Apache License

private JSONObject executeFind(GridFSBucket gridFS, String query, String sortBy, String limit, String skip)
        throws JSONException {
    Document queryObj = Document.parse(query);
    Document sortObj = Document.parse(sortBy);
    int filesLimit = Integer.parseInt(limit);
    int filesSkip = Integer.parseInt(skip);
    // Partial Keys cant be fetched for a file

    MongoCursor<GridFSFile> it = gridFS.find(queryObj).sort(sortObj).skip(filesSkip).limit(filesLimit)
            .iterator();//from www  .jav a2s  .  co  m

    JSONArray fileList = new JSONArray();
    while (it.hasNext()) {
        GridFSFile fsFile = it.next();

        JSONObject file = new JSONObject();

        file.put("_id", fsFile.getId().asObjectId().getValue());
        file.put("fileName", fsFile.getFilename());
        file.put("length", fsFile.getLength());
        file.put("chunkSize", fsFile.getChunkSize());
        file.put("uploadDate", fsFile.getUploadDate());
        file.put("md5", fsFile.getMD5());
        if (fsFile.getMetadata() != null) {
            file.put("metadata", fsFile.getMetadata());
        }

        fileList.put(file);

    }
    JSONObject result = new JSONObject();
    long count = fileList.length();
    result.put("documents", fileList);
    result.put("editable", true);
    result.put("count", count);
    return result;
}

---

From source file:com.imaginea.mongodb.services.impl.GridFSServiceImpl.java

License:Apache License

@Override
public Set<String> getAllBuckets(String dbName) throws DatabaseException, CollectionException {
    if (dbName == null) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database name is null");

    }//from  w  w w  . j  av  a2 s  . c  om
    if (dbName.equals("")) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database Name Empty");
    }

    // if (!databaseService.getDbList().contains(dbName)) {
    //   throw new DatabaseException(ErrorCodes.DB_DOES_NOT_EXISTS,
    //       "DB [" + dbName + "] DOES NOT EXIST");
    // }

    MongoCursor<String> iterator = mongoInstance.getDatabase(dbName).listCollectionNames().iterator();

    Set<String> bucketsList = new HashSet<String>();
    if (iterator.hasNext()) {
        while (iterator.hasNext()) {

            String collection = iterator.next();

            int pos = collection.lastIndexOf(".files");
            if (pos > 0) {
                bucketsList.add(collection.substring(0, pos));
            }
        }
    }
    return bucketsList;
}

---

From source file:com.imaginea.mongodb.services.impl.SystemCollectionServiceImpl.java

License:Apache License

/**
 * Drops all the users from the given mongo db
 *
 * @param dbName Name of the database//  w  w  w.  j  a v  a  2 s .  c  om
 * @return Returns the success message that shown to the user
 * @throws DatabaseException throw super type of UndefinedDatabaseException
 */

@Override
public String removeAllUsers(String dbName) throws ApplicationException {
    if (dbName == null) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database name is null");
    }
    if (dbName.equals("")) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database Name Empty");
    }
    MongoCursor<Document> users = mongoInstance.getDatabase(dbName).getCollection("system.users").find()
            .iterator();
    if (users.hasNext()) {
        while (users.hasNext()) {
            try {
                Document user = users.next();
                mongoInstance.getDatabase(dbName).getCollection("system.users").findOneAndDelete(user);
            } catch (MongoException e) {
                throw new ApplicationException(ErrorCodes.USER_DELETION_EXCEPTION, e.getMessage());
            }
        }
        return "All users are dropped from the DB: " + dbName;
    } else {
        return "The DB:" + dbName + "does not have any users";
    }
}

---

From source file:com.imaginea.mongodb.services.impl.SystemCollectionServiceImpl.java

License:Apache License

/**
 * Gets indexes for a given collection in a mongo db
 *
 * @param dbName         Name of the database the indexes should be listed
 * @param collectionName Name of the collection to which the index is to be listed
 * @return Returns the success message that shown to the user
 * @throws DatabaseException throw super type of UndefinedDatabaseException
 *///w  w w  .  ja  v  a  2s .co  m
@Override
public JSONObject getIndex(String dbName, String collectionName) throws ApplicationException {
    if (dbName == null) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database name is null");
    }
    if (dbName.equals("")) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database Name Empty");
    }

    if (collectionName == null) {
        throw new DatabaseException(ErrorCodes.COLLECTION_NAME_EMPTY, "Collection name is null");
    }
    if (collectionName.equals("")) {
        throw new DatabaseException(ErrorCodes.COLLECTION_NAME_EMPTY, "Collection name is Empty");
    }
    try {

        ListIndexesIterable<Document> result = mongoInstance.getDatabase(dbName).getCollection(collectionName)
                .listIndexes();
        MongoCursor<Document> iterator = result.iterator();

        List<Document> listOfIndexes = null;
        if (iterator.hasNext()) {
            listOfIndexes = new ArrayList<Document>();
            while (iterator.hasNext()) {
                Document doc = iterator.next();
                Document resultDoc = (Document) doc.get("key");
                listOfIndexes.add(resultDoc);
            }
        }
        return ApplicationUtils.constructResponse(false, listOfIndexes.size(), listOfIndexes);
    } catch (MongoException e) {
        throw new ApplicationException(ErrorCodes.INDEX_ADDITION_EXCEPTION, e.getMessage());
    }
}

---

From source file:com.imaginea.mongodb.services.impl.SystemCollectionServiceImpl.java

License:Apache License

/**
 * Removes all the indexes from all the collections in a given mongo db
 *
 * @param dbName Name of the database/*w  ww .  j  a  v  a  2s  .c o m*/
 * @return Returns the success message that shown to the user
 * @throws DatabaseException throw super type of UndefinedDatabaseException
 */

@Override
public String removeIndexes(String dbName) throws ApplicationException {
    if (dbName == null) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database name is null");
    }
    if (dbName.equals("")) {
        throw new DatabaseException(ErrorCodes.DB_NAME_EMPTY, "Database Name Empty");
    }

    MongoCursor<String> iterator = mongoInstance.getDatabase(dbName).listCollectionNames().iterator();
    if (iterator.hasNext()) {
        while (iterator.hasNext()) {
            String collection = iterator.next();
            try {
                mongoInstance.getDatabase(dbName).getCollection(collection).dropIndexes();
            } catch (MongoException e) {
                throw new ApplicationException(ErrorCodes.INDEX_REMOVE_EXCEPTION, e.getMessage());
            }
        }
    }
    return "All indexes are dropped from DB: " + dbName;
}

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