schemasafe/typelevel-schema-poc

Toy-troy is simplified version of Troy, the schema-safe Cassandra driver. The main purpose of this repo to demonstrate the underlying concept of Troy by implementing only a small subset of it.

What Troy allows you to do

You write your code using CQL strings

What Troy does under the hood

Using Macros, the CQL strings above gets expanded into:

Error messages

At compile time, you get error messages if you query is wrong

[error] <macro>:5: Table "lol" does not exist.

[error] <macro>:5: Column "foobar" does not exist in table "posts"

[error] <macro>:5: Row is not compatible with Output structure

[error] <macro>:5: Bind Markers are not compatible with Input structure

Demo

See it working here, you'll need running Cassandra to run the demo, but it compiles without connecting it.