Tab with Jupyter like notebooks for SpEL

[arkadius]

Would be nice to have separate tab with scratches to experiment with SpEL. e. g. you can write steps:

1. first step

a = { foo: 1, bar: "asdf" }

(evaluated result of first step)

2. second step

b = a.foo + 2

(evaluated result of second step)

At the begging it could be only one scratch without type completion and syntax highlight. In the future would be nice to:

• have a list of saved scratches
• have ability to read some data from external source (like file, db, kafka and so on)
• have ability to store data to external sinks
• have working: type completion and syntax highlight

Maybe it would be quite easy to integrate spel with zeppelin and use it instead?