SOLR - update a certain field value depending on the field value of another field

Question

I have a field whose default value is false:

<field indexed="true" multiValued="false"
  name="has_status" default="false" />

and I have another field:

<field indexed="true" multiValued="false"
  name="status_value"
 type="string" default="false" />

is there a way to calculate the value for has_status based on if status_value is not empty during indexing? so, when a document is being indexed, if an item has status_list that we put "true" for has status.

Answer 1

If you using DataImportHandler, there are transformers for that. Otherwise, you want to use an UpdateRequestProcessor and the nearly-identical example is on the wiki, or you can put something together with one of the FieldMutating Update Processors .