pomCompare.yaml

# use in=oafp to compare pom.xml files
in   : oafp
data :
# Build a list of all the jar files that should be in the lib directory
- file: pom.xml
  path: "project.dependencies.dependency[?not_null(artifactId) && artifactId != 'rhino'].{file:concat(artifactId, concat('-', concat(version, '.jar')))}"
# Build a list of all the jar files that are actually in the lib directory
- in  : ls
  data: lib
  path: "[].{file: filename}"
# Store in a channel the pom.xml dependencies
- file : pom.xml
  path : "project.dependencies.dependency"
  out  : ch
  ch   : &CH
    name   : ref
    type   : file
    options: 
      file: pom.json 
  chkey: artifactId
# Compare the two lists and find the differences comparing with the 'a' difference
set  :
  a: "[0]"
  b: "[1]"
setop: diffa
out  : json
pipe :
  # PIPE to get a list of artifactId and version from the jar file names
  chs   : *CH
  path  : "[].{ file: file, groupId: ch('ref', 'get', concat('(artifactId: ', concat(replace(file, '^(.*)-([0-9]+\\.[0-9]+\\.[0-9]+)\\.jar$', '', '$1'), ')')), __ ).groupId, artifactId: replace(file, '^(.*)-([0-9]+\\.[0-9]+\\.[0-9]+)\\.jar$', '', '$1'), version: replace(file, '^(.*)-([0-9]+\\.[0-9]+\\.[0-9]+)\\.jar$', '', '$2')}"
  out   : oaf
  outoaf: |- #js
      var ar = data
      var lt = io.listFiles("lib").files
      ow.loadJava()
      var m = new ow.java.maven()

      ar.forEach(r => {
        $from(lt)
        .starts("filename", r.artifactId + '-')
        .select(f => {
          log(`removing lib/${f.filename}`)
          io.rm("lib/" + f.filename)
        })

        log(`downloading ${r.file}...`)
        $rest().get2File("lib/" + r.file, "https://repo1.maven.org/maven2/" + r.groupId.replace(/\./g, '/') + '/' + r.artifactId + '/' + r.version + '/' + r.file)
      })

      return ar