Hi, I'm currently indexing a bunch of fields for a given document. For e.g. let's assume there's a field called "rating". The rating field is not part of the original document during index, so the value is blank. The field gets updated by an external service when the document is rated by users. The service makes a partial Solr update and sets the appropriate rating value. But, when I re-index the same document, the rating fields get over-written and reset to blank. I understand that an indexing in Solr is delete and add, but is there a way to put a conditional indexing at the field level, which will keep the value if its already present in the index for a given id ?
Any pointers will be appreciated. Thanks, Shamik
