csharp-driver | DataStax C# Driver for Apache Cassandra
kandi X-RAY | csharp-driver Summary
kandi X-RAY | csharp-driver Summary
A modern, feature-rich and highly tunable C# client library for Apache Cassandra (2.0+) using Cassandra's binary protocol and Cassandra Query Language v3.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of csharp-driver
csharp-driver Key Features
csharp-driver Examples and Code Snippets
Community Discussions
Trending Discussions on csharp-driver
QUESTION
I am trying to perform a bulkwrite with c# https://mongodb.github.io/mongo-csharp-driver/2.7/reference/driver/crud/writing/#bulk-writes - I could have a list of documents from 70-80K.
...ANSWER
Answered 2022-Feb-02 at 04:54The first argument passed to UpdateOneModel is the filter. The filter tells MongoDB which document you want to update. You pass new BsonDocument("_id", 1), which tells MongoDB you want to update the document with an _id of 1. _id is a special field in MongoDB documents:
The field name _id is reserved for use as a primary key; its value must be unique in the collection, is immutable, and may be of any type other than an array. If the _id contains subfields, the subfield names cannot begin with a ($) symbol
_id is immutable, meaning it cannot be changed. This is an issue because the data you are passing to $set contains an _id field that is not 1.
Instead, in the filter document you should be passing the _id of the document you are trying to insert.
QUESTION
I'm trying to retrieve a list of objects from my MongoDB Database. I have to use a BsonDocument to store additional dynamic data on the record, but when I try to return a list to the browser using minimal API I get the following error.
...ANSWER
Answered 2021-Dec-28 at 20:42What do you want to return? if you change your "go" route to this
QUESTION
I am trying to access the Save() method detailed in the driver documentation, but there seems to be no definition at all of the method when I call the function from an IMongoCollection, and the class MongoCollection is not found or recognized by the IDE.
The reason I am trying to call Save() instead of Update(), is that I want it to be by _id, I am trying to implement a generic IMongoRepository() that would just update a document within a collection without needing any extra information.
ANSWER
Answered 2021-Oct-03 at 15:28Save (as well as MongoCollection class itself) is deprecated method in the Legacy driver, the current driver doesn't have this functionality, see here
QUESTION
I have a service that needs to watch a collection on a Mongo DB to create changes in the system. I have managed to establish a connection to a replica set using the C# driver and I'm using the following code to test the change stream.
...ANSWER
Answered 2021-Jul-07 at 05:12give the following a try:
QUESTION
We need to load mongodb c# assembly at runtime.
( reason: health check service attached to an app via nuget , needs to check the app for mongo connectivity, but it should use the existing(!) mongo dll in the BIN. Not bringing one of its own, Hence loading mongo by reflection)
All I need to check is this code :
...ANSWER
Answered 2021-Jul-11 at 14:09This is because the class implements the Description property explicitly. Thus your code should look like this in order to fix it. That is, you need to explicitly cast to the correct interface.
QUESTION
NB. The question is not about what null reference protector operator (X?.Y) means. I'm aware the title is a bit cryptical but I haven't figure out a better way to formulate it. Sorry.
I'm using FindOneAndReplaceAsync(...) and according to it, the default for the options is null.
ANSWER
Answered 2021-May-13 at 09:33This is fun. If you whittle it down to a minimal reproducer, you get this:
QUESTION
I have a 3 projects (.sln) that are their own project plus a secondary project that has the MongoDB code in it.
On the same computer with the 3 visual studio project open calling the same methods only 1 of them work the other all throw and error. Since it's the same line of code it mean there is a setting in the main project that mongo doesn't seems to like. Any idea what this might be.
here's the method in question in the shared project for mongo:
...ANSWER
Answered 2020-Aug-18 at 17:26The issue is as of the time of writing this the MongoDB.Driver v2.11.0 is bugged. There is some sort of incompatibility in the library it's using that if you downgrade to MongoDB.Driver v2.10.4 it works perfectly.
Edit : It doesn't work "perfectly" as i described. Actually one major problem is that i cannot use allowDiskUse on any find operation anymore with 2.10.4. It doesn't seem to accept it or work at all.
QUESTION
Function that generates timestamp based guid
...ANSWER
Answered 2020-Sep-11 at 08:02As said in the comments by the others, this is technically not a GUID. Meanwhile, you can redo the bitwise operator this way:
QUESTION
Is there a way to disable completely (for all classes) the discriminator ("_t") fields from being added to the bson documents? I am referring to: mongo-csharp-driver/polymorphism
...ANSWER
Answered 2020-Aug-27 at 16:00One option is using Newtonsoft bson serializer (Newtonsoft.Json.Bson) which gives a lot of serialization options.
It isn't efficient since you need to write the bson to a stream and then read it from there with MongoDb reader but it provides lots of customization option.
Example code:
QUESTION
I am trying to run the query form my local machine using console as below
...ANSWER
Answered 2020-Aug-26 at 06:03I found the solution the issue is with the driver version. I was using the latest version which is the default.
I downgraded to 3.11.0 and started working.
My server version is [cqlsh 5.0.1 | Cassandra 3.11.4 | CQL spec 3.4.4 | Native protocol v4]
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install csharp-driver
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
