Getting Started

A minimal path from code to output.

1) Write a transform

Create hello.bl:

TRANSFORM Hello {
    LET greet = "Hello, " + input.name;
    OUTPUT { greeting: greet };
}

2) Run it locally

java -jar branchline-cli-<tag>-all.jar hello.bl --input sample.json

3) Try it in the Playground

Open hello-transform and edit the program or input.

Next steps

• Learn the syntax in the Tour of Branchline.
• Use TRY/CATCH to keep pipelines resilient.
• Explore the Standard Library.