Sidecar index components for Solr (4.5.0).
This is a set of Solr components for easy management of "sidecar indexes" - indexes that extend the main index with additional stored and / or indexed fields. Conceptually this can be viewed as an extension of the ExternalFileField or as a static join between documents from two collections. This functionality is useful in applications that require very different update regimes for the two parts of the index (e.g. main catalogue items combined with clickthroughs).