Mongo db rev001.
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This document discusses MongoDB and how to use it from C#. It covers what MongoDB is, installing and configuring MongoDB, connecting to MongoDB from a C# application, performing CRUD operations on MongoDB collections from C#, and some MongoDB administration tools.
![static void Main(string[] args)
{
// get the App.config Connection String
string connString = ConfigurationManager.AppSettings["connectionString"];
// Get the client connection
var client = new MongoClient(connString);
// Get the MongoServer Object
var server = client.GetServer();
// Gets a link to the DB, will create with first insert
MongoDatabase myDatabase = server.GetDatabase("FileHistory");
// Create a BsonDocument list for the Table
MongoCollection<BsonDocument> filesReceivedTable =
myDatabase.GetCollection<BsonDocument>("BankFilesReceieved");
// Create an individual Table row with the fields
BsonDocument filesReceived = new BsonDocument {
{ "DateReceived", DateTime.Now },
{ "FileName", "BankFile1.txt" }};
// Insert into table
filesReceivedTable.Insert(filesReceived);
// Get the table collection
MongoCollection<BsonDocument> updateTable =
myDatabase.GetCollection<BsonDocument>("BankFilesReceieved");
// Walk through each document updating the name-value pair.
foreach (var filesRead in updateTable.FindAll())
{
foreach (var elements in filesRead.Elements)
{
if (elements.Name == "FileName")
{
elements.Value = "BankNameChanged.txt";
updateTable.Save(filesRead);
}
}
}](https://image.slidesharecdn.com/mongodbrev001-150104203325-conversion-gate01/85/Mongo-db-rev001-28-320.jpg)
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Mongo db rev001.
- 1. MongoDB in C# By Rich Helton January 01, 2015 Buy “Mastering NserviceBus with Persistence”
- 2. What is MongoDB MongoDB is a cross-platform document- oriented database. http://en.wikipedia.org/wiki/MongoDB ➢ This means that it is NoSQL, not utilizing the relational SQL commands, but utilizing JSON- like documents to query the database. ➢ The JSON-like documents are BSON, Binary JSON. ➢ MongoDB is free and open source. ➢ http://www.mongodb.org
- 3. What is MongoDB ➢ MongoDB is a cross-platform document- oriented database. http://en.wikipedia.org/wiki/MongoDB ➢ This means that it is NoSQL, not utilizing the relational SQL commands, but utilizing JSON-like documents to query the database. ➢ MongoDB is free and open source. http://www.mongodb.org
- 4. The Motivation ● Sometimes using a full Microsoft SQL Server installation, with maintenance for databases, may be a little overkill for something as simple as keeping track of a file history table. ● The need for access control is still needed for basic security, so something more than a File I/O is required.
- 5. Installation ● Installation instructions can be found to install the correct version by checking the OS from http://docs.mongodb.org/manual/tutorial/insta ll-mongodb-on-windows/ ● The download page of the installations for Windows, OSX, Solaris and Linux can be found at http://www.mongodb.org/downloads ● We can optionally move the downloaded files to “C:mongodb”.
- 6. Installation MSI's ● Alternately, you can just use the MongoDB MSI file to install the program into the “C:Program FilesMongoDB” directory. ● For Win32, http://dl.mongodb.org/dl/win32/i386 ● For Win64, http://dl.mongodb.org/dl/win32/x86_64
- 7. Startup ● An data directory needs to be created to store the database, for example “md datadb”, which “datadb” is the default directory for mongod. ● Running “C:mongodbbinmongod.exe” will now create the database. ● The “--auth” argument can be used to force authentication into the server.
- 9. There are many tools for MongoDB ➢ There are many admin tools, some can be found at http://docs.mongodb.org/ecosystem/tools/adm ➢ One of the admin tools that supports multiple platforms and runs in Java is Umongo, found at http://edgytech.com/umongo/
- 10. Viewing the new database in UMongo After downloading Umongo, we run the applications with the default settings to see the new database:
- 11. Running as a Service l To run MongoDB as a service, we need a config file and we will use the -install option on this config file. l We will create a log directory in the “C:datadb” directory.
- 12. Creating and starting the service Running “mongod --logpath=C:datadblogmongo.log --install” as administrator in the command prompt:
- 13. Viewing the service After installing the service, we can see the service running:
- 14. A recap of some of the exe's: ● mongo.exe – runs the database shell. ● mongod.exe – the core database. ● mongos.exe – auto sharding process. ● mongodump.exe – dump/export utility. ● mongorestore.exe – restore/import utility.
- 15. Start the C#
- 16. We will create a Command program MongoDBConsoleApp1
- 18. No matter the database, there needs to be a connectionstring l Add an App.config with the “<add key="connectionString" value="Server=localhost:27017"/>”. The default port for MongoDB is port 27017.
- 19. Starting the DB connection l We will get the connectionstring, and connect to the database.
- 20. BSON and the DB In order to perform CRUD operations on the database, a BsonCollection is used to map to the table. The table is really a collection of documents. The documents being name/value pairs. Here, we have an insert of a document.
- 21. More on BSON BSON is Binary JSON. It is a name-value pair, in which the value could be many different data types. More on BSON can be found at http://en.wikipedia.org/wiki/BSON
- 22. After the insert, verify After the insert, we can verify the data in UMongo. Here, we see that a document was created in the FileHistory collection. We can also export the data to a text file.
- 23. Viewing the exported file
- 24. Code to read the collection A table is just a collection of documents. Each document has a name/value pair. We walk through the collection reading the name-value pair.
- 25. Updating the collection ➢ To update the collection, find the value in the collection, change it, and save it in the collection.
- 26. Deleting a document ➢ To remove a document, a query has to be developed that matches a name-value pair.
- 27. Deleting a collection (table) ➢ To remove a collection, a drop need only be performed on the collection.
- 28. static void Main(string[] args) { // get the App.config Connection String string connString = ConfigurationManager.AppSettings["connectionString"]; // Get the client connection var client = new MongoClient(connString); // Get the MongoServer Object var server = client.GetServer(); // Gets a link to the DB, will create with first insert MongoDatabase myDatabase = server.GetDatabase("FileHistory"); // Create a BsonDocument list for the Table MongoCollection<BsonDocument> filesReceivedTable = myDatabase.GetCollection<BsonDocument>("BankFilesReceieved"); // Create an individual Table row with the fields BsonDocument filesReceived = new BsonDocument { { "DateReceived", DateTime.Now }, { "FileName", "BankFile1.txt" }}; // Insert into table filesReceivedTable.Insert(filesReceived); // Get the table collection MongoCollection<BsonDocument> updateTable = myDatabase.GetCollection<BsonDocument>("BankFilesReceieved"); // Walk through each document updating the name-value pair. foreach (var filesRead in updateTable.FindAll()) { foreach (var elements in filesRead.Elements) { if (elements.Name == "FileName") { elements.Value = "BankNameChanged.txt"; updateTable.Save(filesRead); } } }
- 29. // Get the table collection MongoCollection<BsonDocument> deletingRows = myDatabase.GetCollection<BsonDocument>("BankFilesReceieved"); // Remove on query where a name = a specific value deletingRows.Remove(Query.EQ("FileName","BankNameChanged.txt")); // Get the table collection MongoCollection<BsonDocument> readingTable = myDatabase.GetCollection<BsonDocument>("BankFilesReceieved"); // Walk through each document reading the name-value pair. foreach (var filesRead in readingTable.FindAll()) { foreach (var elements in filesRead.Elements) { Console.WriteLine("Name :" + elements.Name); Console.WriteLine("Value :" + elements.Value); } } // Get the table collection MongoCollection<BsonDocument> deletingTable = myDatabase.GetCollection<BsonDocument>("BankFilesReceieved"); // Delecting the table deletingTable.Drop(); }
- 30. Mongo Shell
- 31. Mongo Shell ● The mongo.exe is used to execute shell commands. http://docs.mongodb.org/manual/reference/mongo-shell/ ● The shell commands can be used to show databases, users, collections, and also create the same.
- 32. Adding a user ● Can be created using the “db.addUser(“user”,”password”) in the mongo shell.
- 33. In C#, adding a user would be similar to:
- 34. In C#, executing the function could be done as:
- 35. In C#, finding all users would be similar to:
- 36. In C#, finding all users would be similar to:
- 37. User Roles ● Just because a user is added, doesn't mean that the user has assigned roles. ● We can see the roles to be added in the NoSQL Manager for MongoDB.
- 38. Mongo C# Driver
- 39. The Mongo C# driver ● The documentation can be found at http://docs.mongodb.org/ecosystem/drivers/cs ● This was the nuget driver that we installed earlier as version 1.9.2. There are c-sharp community projects found at http://docs.mongodb.org/ecosystem/drivers/csh , one of which is MongoCola.
- 40. MongoCola ● MongoCola is an c# open source Mongo Admin tool. ● The c-sharp source code for MongoCola can be found at https://github.com/magicdict/MagicMongoDBTool
- 41. Some Admin Tools Homepages ● MongoCola Homepage http://osdig.com/project/index/id/22703.html#.VK ● No-SQL Manager for MongoDB http://www.mongodbmanager.com/
Editor's Notes
- #3: Give a brief overview of the presentation. Describe the major focus of the presentation and why it is important. Introduce each of the major topics. To provide a road map for the audience, you can repeat this Overview slide throughout the presentation, highlighting the particular topic you will discuss next.