Example usage for com.mongodb MongoClient listDatabaseNames

Introduction

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

Prototype

public MongoIterable<String> listDatabaseNames() 

Source Link

Document

Get a list of the database names

Usage

From source file:org.netbeans.modules.mongodb.ui.util.DatabaseNameValidator.java

License:Open Source License

private List<String> databaseNames() {
    MongoConnection connection = lookup.lookup(MongoConnection.class);
    if (connection != null) {
        MongoClient client = connection.getClient();
        if (client != null) {
            return client.listDatabaseNames().into(new ArrayList<String>());
        }//from   ww  w  . j av a 2 s . co  m
    }
    return emptyList();
}

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From source file:org.restheart.security.impl.DbIdentityManager.java

License:Open Source License

/**
 *
 * @param arguments/*from w w  w .  ja va2  s. co  m*/
 * @throws java.io.FileNotFoundException
 */
public DbIdentityManager(Map<String, Object> arguments) throws FileNotFoundException {
    init(arguments, "dbim");

    if (this.cacheEnabled) {
        this.cache = CacheFactory.createLocalLoadingCache(this.cacheSize, this.cacheExpirePolicy, this.cacheTTL,
                (String key) -> {
                    return this.findAccount(key);
                });
    }

    MongoClient mongoClient = MongoDBClientSingleton.getInstance().getClient();

    ArrayList<String> dbNames = new ArrayList<>();

    mongoClient.listDatabaseNames().into(dbNames);

    if (!dbNames.contains(this.db)) {
        throw new IllegalArgumentException(
                "error configuring the DbIdentityManager. The specified db does not exist: " + db);
    }

    MongoDatabase mongoDb = mongoClient.getDatabase(this.db);

    ArrayList<String> collectionNames = new ArrayList<>();

    mongoDb.listCollectionNames().into(collectionNames);

    if (!collectionNames.contains(this.coll)) {
        throw new IllegalArgumentException(
                "error configuring the DbIdentityManager. The specified collection does not exist: " + coll);
    }

    this.mongoColl = mongoDb.getCollection(coll, BsonDocument.class);
}

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From source file:tango.mongo.MongoConnector.java

License:Open Source License

public static boolean isMongoOn(String host) {
    MongoClient m;
    m = null;//from   ww w  .ja  v  a 2 s .  c o  m
    //try {
    m = new MongoClient(host);
    // } catch (UnknownHostException e) {
    //     exceptionPrinter.print(e, "ukhe:", Core.GUIMode);
    //    return false;
    //}
    if (m == null) {
        return false;
    }
    List<String> l;
    try {
        MongoIterable ll = m.listDatabaseNames();
        l = m.getDatabaseNames();
    } catch (MongoException e) {
        if (Core.GUIMode) {
            IJ.log("connection failed..");
        }
        return false;
    }
    return true;
}

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From source file:Tests.AddElementToCollection.java

public void addToCollection(String jsonString) {
    MongoClient mongoClient = new MongoClient(new ServerAddress(),
            Arrays.asList(MongoCredential.createCredential("admin", "test", "password".toCharArray())));
    try {//from   ww  w  .  j a v  a2  s  .com
        for (String databaseName : mongoClient.listDatabaseNames()) {
            System.out.println("Database: " + databaseName);
        }
        MongoDatabase db = mongoClient.getDatabase("test");
        MongoCollection coll = db.getCollection("test2");

        Document doc = Document.parse(jsonString);
        coll.insertOne(doc);
    } finally {
        mongoClient.close();
    }
}

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From source file:Tests.PrintFristElementOfCollection.java

public static void main(String[] args) throws UnknownHostException {

    MongoClient mongoClient = new MongoClient(new ServerAddress(),
            Arrays.asList(MongoCredential.createCredential("admin", "test", "password".toCharArray())));
    try {//from  ww  w  . j  av a 2s.c  o m
        for (String databaseName : mongoClient.listDatabaseNames()) {
            System.out.println("Database: " + databaseName);
        }
        MongoDatabase db = mongoClient.getDatabase("test");
        MongoCollection coll = db.getCollection("test");
        System.out.println(coll.find().first());
    } finally {
        mongoClient.close();
    }
}

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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  a  v a  2 s  .  co 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();
}

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