mongodb-java

I am a newbie in database projects. I don't know how to display a collection in mongodb inside a swing window (EDIT: JTable) after connecting it to the database server....plz help me out in this... I have tried doing this in sql but am not able to do using mongodb JButton btnDisplay = new JButton("display"); btnDisplay.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { // To connect to mongodb server MongoClient mongoClient = new MongoClient( "localhost" , 27017 ); // Now connect to your databases DB db = mongoClient.getDB( "test" ); System.out.println(

I am trying to design a Mongo Db connection class where I am maintaning MongoClient as static. private static MongoClient client = null; public static DB connectToMongo() throws Exception { if (null != client) { return client.getDB(DBNAME); } client = new MongoClient(HOST,PORT); return client.getDB(DBNAME); } My whole web application uses the above method to connect to Mongo as follows: db = MongoDBConnection.connectToMongo(); collection = db.getCollection("collectionName"); After performing DB operations I never call the close connection for MongoClient. The connection class would always

I'm seeing a strange issue using the casbah / java driver. I keep running into the following exception when the driver tries to create a response from mongo: Oct 16, 2012 10:45:07 AM com.mongodb.DBTCPConnector$MyPort error SEVERE: MyPort.error called java.lang.IllegalArgumentException: response too long: 1634610484 at com.mongodb.Response.(Response.java:40) at com.mongodb.DBPort.go(DBPort.java:110) at com.mongodb.DBPort.go(DBPort.java:75) at com.mongodb.DBPort.call(DBPort.java:65) at com.mongodb.DBTCPConnector.call(DBTCPConnector.java:201) at com.mongodb.DBApiLayer$MyCollection.__find

I have data of this form and I referred to this link pivoting in mongodb : Name, SumPrice, type,year A, 50.0, Retail,2015 B, 467.0, Online,2015 A, 1456.0, Direct,2015 B, 1149.53, Direct,2015 C, 273.20, Online,2014 C, 110.0, Direct,2014 I want data to be transformed using spring-data-mongodb of this form Name ,Retail, Online , Direct, year A, 50.0 , 0.0, 1456.0 2015 B, 0.0, 467.0, 1149.53, 2015 C, 0.0, 273.20, 110.0, 2014 Please lemme know how to do. Regards kris 来源： https://stackoverflow.com/questions/32902502/how-to-pivot-data-using-spring-data-mongodb

I'm trying to convert this query in java: db.beni.find({ $where: function() { return /.*11/.test(this.foglio) || /.*99/.test(this.comune) } }) Where this.foglio is a numeric field and this.comune is a string fields. Thanks 来源： https://stackoverflow.com/questions/9824339/mongodb-java-driver-query-with-regexp-number-fields

From my Java application, I have stored the values in mongoDB in ArrayList(set of Java objects). How can I retrieve the data from DBObject I am storing the data in mongoDB like this: { "students" : [{"firstName" : "Jesse", "lastName" : "Varnell", "age" : "15", "gender" : "M" }, { "firstName" : "John", "lastName" : "Doe", "age" : "13", "gender" : "F"}] } I am having the Java Object for the Student like: public class Student { public String firstName; public String lastName; public String age; public String gender; // M, F } I am retrieving the data from mongoDB like: BasicDBObject query = new

I have to write a complex mongo query using java but am not able to do it. The mongo query looks like this: db.video.findOne( { $or: [ { key1: { $in : [764] } }, { key2: {$in : [list2] } }, { $and [ { key2 : 3}, {key4:67} ] } ] }) I have to write the above query using the QueryBuilder class. In what way can I do it? Thanks Using QueryBuilder your query should look like this DBObject query = QueryBuilder.start().or( QueryBuilder.start("key1").in(764).get(), QueryBuilder.start("key2").in(keys).get(), QueryBuilder.start().and("key3").is(3).and("key4").is(64).get() ).get(); Consider using jongo