Gremlin YAML String Replacement

update_indexed_vertex.groovy

import groovy.json.JsonSlurper
def slurper = new JsonSlurper()
keys = data = null
if ('null' != 'null')
  keys = slurper.parseText('null')  
if ('{"age":35,"name":"James Thornton"}' != 'null')
  data = slurper.parseText('{"age":35,"name":"James Thornton"}')
vertex = g.getRawGraph().getNodeById(9)
manager = g.getRawGraph().index()
index = manager.forNodes('test_idxV')
g.setMaxBufferSize(0)
g.startTransaction()
index.remove(vertex)
for (String key in vertex.getPropertyKeys())
  vertex.removeProperty(key)
for (entry in data.entrySet()) {
  if (entry.value == null) continue;
  vertex.setProperty(entry.key,entry.value)
  if (keys == null || keys.contains(entry.key))
      index.add(vertex,entry.key,entry.value)
}
g.stopTransaction(TransactionalGraph.Conclusion.SUCCESS)
return vertex