I worked with plugin data source using file data and it worked fine as given here. For MongoDB I downloaded the code given in GitHub and compiled it and registered it with categories.
How can I use this in ArcMap like will I get a new connection option in
Add new database connection? I do not know how I will implement this.
For Simple file I used Java code and deployed the jar file to ArcGIS by placing the JAR file in the
<ArcGIS Install Dir>\java\lib\ext folder and when I opened ArcCatalog I saw the custom file as a feature class.
For Mongo I used the .Net code but I do not know after registering the dll with categories page how it can be accessed in ArcMap. i.e. How i can connect to MongoDB in ArcCatalog?