Example usage for com.mongodb.client MongoDatabase createCollection

Introduction

In this page you can find the example usage for com.mongodb.client MongoDatabase createCollection.

Prototype

void createCollection(ClientSession clientSession, String collectionName);

Source Link

Document

Create a new collection with the given name.

Usage

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
 *//*from  w  w w .  jav a 2s . 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.telefonica.iot.cygnus.backends.mongo.MongoBackendImpl.java

License:Open Source License

/**
 * Creates a collection for plain MongoDB, given its name, if not exists in the given database. Size-based limits
 * are set, if possible. Time-based limits are also set, if possible.
 * @param dbName//  w w  w .j  a  v  a2s  .c o m
 * @param collectionName
 * @param collectionsSize
 * @param maxDocuments
 * @throws Exception
 */
@Override
public void createCollection(String dbName, String collectionName, long collectionsSize, long maxDocuments,
        long dataExpiration) throws Exception {
    MongoDatabase db = getDatabase(dbName);

    // create the collection, with size-based limits if possible
    try {
        if (collectionsSize != 0 && maxDocuments != 0) {
            CreateCollectionOptions options = new CreateCollectionOptions().capped(true)
                    .sizeInBytes(collectionsSize).maxDocuments(maxDocuments);
            LOGGER.debug("Creating Mongo collection=" + collectionName + " at database=" + dbName + " with "
                    + "collections_size=" + collectionsSize + " and max_documents=" + maxDocuments
                    + " options");
            db.createCollection(collectionName, options);
        } else {
            LOGGER.debug("Creating Mongo collection=" + collectionName + " at database=" + dbName);
            db.createCollection(collectionName);
        } // if else
    } catch (Exception e) {
        if (e.getMessage().contains("collection already exists")) {
            LOGGER.debug("Collection already exists, nothing to create");
        } else {
            throw e;
        } // if else
    } // try catch

    // ensure the recvTime index, if possible
    try {
        if (dataExpiration != 0) {
            BasicDBObject keys = new BasicDBObject().append("recvTime", 1);
            IndexOptions options = new IndexOptions().expireAfter(dataExpiration, TimeUnit.SECONDS);
            db.getCollection(collectionName).createIndex(keys, options);
        } // if
    } catch (Exception e) {
        throw e;
    } // try catch
}

---

From source file:io.mandrel.common.mongo.MongoUtils.java

License:Apache License

public static void checkCapped(MongoDatabase database, String collectionName, int size, int maxDocuments) {
    if (Lists.newArrayList(database.listCollectionNames()).contains(collectionName)) {
        log.debug("'{}' collection already exists...", collectionName);

        // Check if already capped
        Document command = new Document("collStats", collectionName);
        boolean isCapped = database.runCommand(command, ReadPreference.primary()).getBoolean("capped")
                .booleanValue();/* www .j a va2  s .  com*/

        if (!isCapped) {
            log.info("'{}' is not capped, converting it...", collectionName);
            command = new Document("convertToCapped", collectionName).append("size", size).append("max",
                    maxDocuments);
            database.runCommand(command, ReadPreference.primary());
        } else {
            log.debug("'{}' collection already capped!", collectionName);
        }

    } else {
        database.createCollection(collectionName,
                new CreateCollectionOptions().capped(true).maxDocuments(maxDocuments).sizeInBytes(size));
    }
}

---

From source file:mongodb.QuickTourAdmin.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args//from ww w  . j a  va 2s.co m
 *            takes an optional single argument for the connection string
 */
public static void main(final String[] args) {
    MongoClient mongoClient;

    if (args.length == 0) {
        // connect to the specified database server
        mongoClient = new MongoClient("10.9.17.105", 27017);
    } else {
        mongoClient = new MongoClient(new MongoClientURI(args[0]));
    }

    // get handle to "test" database
    MongoDatabase database = mongoClient.getDatabase("test");

    database.drop();

    // get a handle to the "test" collection
    MongoCollection<Document> collection = database.getCollection("test");

    // drop all the data in it
    collection.drop();

    // getting a list of databases
    for (String name : mongoClient.listDatabaseNames()) {
        System.out.println(name);
    }

    // drop a database
    mongoClient.getDatabase("databaseToBeDropped").drop();

    // create a collection
    database.createCollection("cappedCollection",
            new CreateCollectionOptions().capped(true).sizeInBytes(0x100000));

    for (String name : database.listCollectionNames()) {
        System.out.println(name);
    }

    // drop a collection:
    collection.drop();

    // create an ascending index on the "i" field
    // 1 ascending or -1 for descending
    collection.createIndex(new Document("i", 1));

    // list the indexes on the collection
    for (final Document index : collection.listIndexes()) {
        System.out.println(index.toJson());
    }

    // create a text index on the "content" field
    // text indexes to support text search of string content
    collection.createIndex(new Document("content", "text"));

    collection.insertOne(new Document("_id", 0).append("content", "textual content"));
    collection.insertOne(new Document("_id", 1).append("content", "additional content"));
    collection.insertOne(new Document("_id", 2).append("content", "irrelevant content"));

    // Find using the text index
    long matchCount = collection.count(text("textual content -irrelevant"));
    System.out.println("Text search matches: " + matchCount);

    // Find using the $language operator
    Bson textSearch = text("textual content -irrelevant", "english");
    matchCount = collection.count(textSearch);
    System.out.println("Text search matches (english): " + matchCount);

    // Find the highest scoring match
    Document projection = new Document("score", new Document("$meta", "textScore"));
    Document myDoc = collection.find(textSearch).projection(projection).first();
    System.out.println("Highest scoring document: " + myDoc.toJson());

    // Run a command
    Document buildInfo = database.runCommand(new Document("buildInfo", 1));
    System.out.println(buildInfo);

    // release resources
    database.drop();
    mongoClient.close();
}

---

From source file:net.netzgut.integral.mongo.internal.services.MongoServiceImplementation.java

License:Apache License

@Override
public void capCollection(MongoDatabase db, String collectionName, long sizeInBytes) {
    final MongoIterable<String> result = db.listCollectionNames();
    final List<String> names = result.into(new ArrayList<>());

    if (names.contains(collectionName)) {
        final Document getStats = new Document("collStats", collectionName);
        final Document stats = db.runCommand(getStats);
        Object capped = stats.get("capped");
        final boolean isCapped = capped != null && capped.equals(1);
        if (isCapped == false) {
            final Document convertToCapped = new Document();
            convertToCapped.append("convertToCapped", collectionName);
            convertToCapped.append("size", sizeInBytes);
            db.runCommand(convertToCapped);

            // We need to create the index manually after conversion.
            // See red warning box: http://docs.mongodb.org/v2.2/reference/command/convertToCapped/#dbcmd.convertToCapped
            db.getCollection(collectionName).createIndex(new Document("_id", 1));
        }/*from  w ww .jav a2s .c om*/
    } else {
        db.createCollection(collectionName,
                new CreateCollectionOptions().capped(true).sizeInBytes(sizeInBytes));
    }

}

---

From source file:org.bananaforscale.cormac.dao.collection.CollectionDataServiceImpl.java

License:Apache License

/**
 * Creates a new collection explicitly. Because MongoDB creates a collection
 * implicitly when the collection is first referenced in a command, this
 * method is not required for usage of said collection.
 *
 * @param databaseName the database/*from www  .j  a v  a2  s .c o  m*/
 * @param collectionName the collection to create
 * @return the result of the operation
 * @throws DatasourceException
 * @throws ExistsException
 * @throws NotFoundException
 */
@Override
public boolean addCollection(String databaseName, String collectionName)
        throws DatasourceException, ExistsException, NotFoundException {
    try {
        if (!databaseExists(databaseName)) {
            throw new NotFoundException("The database doesn't exist in the datasource");
        }
        if (collectionExists(databaseName, collectionName)) {
            throw new ExistsException("The collection already exists in the datasource");
        }
        MongoDatabase mongoDatabase = mongoClient.getDatabase(databaseName);
        CreateCollectionOptions options = new CreateCollectionOptions();
        options.capped(false);
        mongoDatabase.createCollection(collectionName, options);
        return true;
    } catch (MongoException ex) {
        logger.error("An error occured while adding the collection", ex);
        throw new DatasourceException("An error occured while adding the collection");
    }
}

---

From source file:tour.NewQuickTour.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args takes an optional single argument for the connection string
 *//*from w  w  w  .  j  ava2s.c  o m*/
public static void main(final String[] args) {
    MongoClient mongoClient;

    if (args.length == 0) {
        // connect to the local database server
        mongoClient = new MongoClient();
    } else {
        mongoClient = new MongoClient(new MongoClientURI(args[0]));
    }

    // get handle to "mydb" database
    MongoDatabase database = mongoClient.getDatabase("mydb");

    database.drop();

    // get a list of the collections in this database and print them out
    List<String> collectionNames = database.listCollectionNames().into(new ArrayList<String>());
    for (final String s : collectionNames) {
        System.out.println(s);
    }

    // get a handle to the "test" collection
    MongoCollection<Document> collection = database.getCollection("test");

    // drop all the data in it
    collection.drop();

    // make a document and insert it
    Document doc = new Document("name", "MongoDB").append("type", "database").append("count", 1).append("info",
            new Document("x", 203).append("y", 102));

    collection.insertOne(doc);

    // get it (since it's the only one in there since we dropped the rest earlier on)
    Document myDoc = collection.find().first();
    System.out.println(myDoc);

    // now, lets add lots of little documents to the collection so we can explore queries and cursors
    List<Document> documents = new ArrayList<Document>();
    for (int i = 0; i < 100; i++) {
        documents.add(new Document("i", i));
    }
    collection.insertMany(documents);
    System.out.println(
            "total # of documents after inserting 100 small ones (should be 101) " + collection.count());

    // lets get all the documents in the collection and print them out
    MongoCursor<Document> cursor = collection.find().iterator();
    try {
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }

    for (Document cur : collection.find()) {
        System.out.println(cur);
    }

    // now use a query to get 1 document out
    myDoc = collection.find(eq("i", 71)).first();
    System.out.println(myDoc);

    // now use a range query to get a larger subset
    cursor = collection.find(gt("i", 50)).iterator();

    try {
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }

    // range query with multiple constraints
    cursor = collection.find(and(gt("i", 50), lte("i", 100))).iterator();

    try {
        while (cursor.hasNext()) {
            System.out.println(cursor.next());
        }
    } finally {
        cursor.close();
    }

    // max time
    collection.find().maxTime(1, TimeUnit.SECONDS).first();

    collection.drop();

    // ordered bulk writes
    List<WriteModel<Document>> writes = new ArrayList<WriteModel<Document>>();
    writes.add(new InsertOneModel<Document>(new Document("_id", 4)));
    writes.add(new InsertOneModel<Document>(new Document("_id", 5)));
    writes.add(new InsertOneModel<Document>(new Document("_id", 6)));
    writes.add(
            new UpdateOneModel<Document>(new Document("_id", 1), new Document("$set", new Document("x", 2))));
    writes.add(new DeleteOneModel<Document>(new Document("_id", 2)));
    writes.add(new ReplaceOneModel<Document>(new Document("_id", 3), new Document("_id", 3).append("x", 4)));

    collection.bulkWrite(writes);

    collection.drop();

    collection.bulkWrite(writes, new BulkWriteOptions().ordered(false));

    // getting a list of databases
    for (String name : mongoClient.listDatabaseNames()) {
        System.out.println(name);
    }

    // drop a database
    mongoClient.dropDatabase("databaseToBeDropped");

    // create a collection
    database.createCollection("cappedCollection",
            new CreateCollectionOptions().capped(true).sizeInBytes(0x100000));

    for (String name : database.listCollectionNames()) {
        System.out.println(name);
    }

    // create an ascending index on the "i" field
    collection.createIndex(new Document("i", 1));

    // list the indexes on the collection
    for (final Document index : collection.listIndexes()) {
        System.out.println(index);
    }

    // create a text index on the "content" field
    collection.createIndex(new Document("content", "text"));

    collection.insertOne(new Document("_id", 0).append("content", "textual content"));
    collection.insertOne(new Document("_id", 1).append("content", "additional content"));
    collection.insertOne(new Document("_id", 2).append("content", "irrelevant content"));

    // Find using the text index
    Document search = new Document("$search", "textual content -irrelevant");
    Document textSearch = new Document("$text", search);
    long matchCount = collection.count(textSearch);
    System.out.println("Text search matches: " + matchCount);

    // Find using the $language operator
    textSearch = new Document("$text", search.append("$language", "english"));
    matchCount = collection.count(textSearch);
    System.out.println("Text search matches (english): " + matchCount);

    // Find the highest scoring match
    Document projection = new Document("score", new Document("$meta", "textScore"));
    myDoc = collection.find(textSearch).projection(projection).first();
    System.out.println("Highest scoring document: " + myDoc);

    // release resources
    mongoClient.close();
}

---