GroveR: An R repository from NextEra Analytics

GroveR brings Declarative Programming to data-centered applications. For example, suppose your code looks like this:

create_foo <- function(bar, BaZzO) {
  ## create foo stuff here...
}

create_bar <- function() {
  ## create bar stuff here...
}

create_baz <- function() {
  ## create baz stuff here...
}

create_quux <- function(bazz) {
  ## create quux stuff here...
}

x <- create_bar()
BAZ <- create_baz()
result <- create_foo(x, BAZ)

Using the tools of GroveR, that can be transformed to this:

App <- GroveR$new()
`%createdBy%` <- App$auto

foo %createdBy% function(bar, baz) {
  ## create foo stuff here...
}

bar %createdBy% function() {
  ## create bar stuff here...
}

baz %createdBy% function() {
  ## create baz stuff here...
}

quux %createdBy% function(baz) {
  ## create quux stuff here...
}

## This builds any dependencies necessary to create 'foo'
result <- App$getArtifact('foo')

As benefits, the application now has:

automatic caching of intermediate artifacts
intelligent rebuilding of artifacts when dependencies change
standardized naming of data artifacts throughout the application
configurable logging of artifact creation using futile.logger
graphical tools to show data dependencies (colors indicate what's up-to-date or not):

nexteraanalytics/GroveR