In this simple example we are going to extract two simple collection Schemas.
java -jar .\mongo-index-recommender-cli-schema-1.0-SNAPSHOT.jar mongodb://localhost:27017 --namespace appdb.users --namespace appdb.items --output-directory ./ --format txt
Let’s break down the command line. This will connect to the MongoDB server at the host localhost and port 27017. It specifies
that the output format will be txt which is the Index Recommendation Engine Textual Format. Finally we will write the index recommendation .txt and
the shell .js files to the directory specified ./
At the end of a successful execution we have two files.
./appdb_2018_10_18_08_51.txt
./appdb_2018_10_18_08_51.js
Each file is made up of the following sections <db name>_<timestamp>.<txt|js>.