Sv: [SPAM] Process copyField only when field is absent in update

I had a similar need in an old solr project. I was able to handle it with this configuration in solrconfig.xml: lastModified realLastModified realLastModified The logic is basically: Copy the default value (lastModified here) into the target field (realLastModified). If the target fie

Process copyField only when field is absent in update

When I have a copyfield directive like,