Name_mappings: empty entityid in mappings provokes double "__"

[manucarrace]

Lets assume we have the folowing mapping for postgis sink:

{
  "serviceMappings": [
    {
      "originalService": "alcobendas",
      "newService": "alcobendas",
      "servicePathMappings": [
        {
          "originalServicePath": "/eficienciaenergetica",
          "newServicePath": "/",
          "entityMappings": [
            {
              "originalEntityId": "(.+)",
              "newEntityId": "",
              "originalEntityType": "ACMeasurement",
              "newEntityType": "acmeasurement",
              "attributeMappings": []
            },
...

According to the data models dm-by-entity-id, dm-by-entity-database and dm-by-entity-database-schema, the mapped table will be "eficienciaenergetica__acmeasurement"

It would be nice to have the following table name: "eficienciaenergetica_acmeasurement"

Note that if newServicePath is "" or newEntityType is "" the mapping does not add aditional underscore at the beggininf or end of the tabla name.

[AlvaroVega]

According with the namemapping provided as example the table name will be "alcobendas_acmeasurement", won't be?

[AlvaroVega]

I seems that the right namemapping should be

{
  "serviceMappings": [
    {
      "originalService": "alcobendas",
      "newService": "",
      "servicePathMappings": [
        {
          "originalServicePath": "/eficienciaenergetica",
          "newServicePath": "/eficienciaenergetica",
          "entityMappings": [
            {
              "originalEntityId": "(.+)",
              "newEntityId": "",
              "originalEntityType": "ACMeasurement",
              "newEntityType": "acmeasurement",
              "attributeMappings": []
            },

and then tablename will be table name: "eficienciaenergetica_acmeasurement"