An Introduction to DSE Field Transformers

The seamless integration between Apache Cassandra and Apache Solr provided by DataStax Enterprise (DSE) allows automatic indexing of Cassandra columns through its secondary index API. This enables developers to map a single Cassandra column to multiple Solr document fields using pre-processing hooks like FieldInputTransformer and FieldOutputTransformer classes. These classes can be extended to customize the Solr document just before indexing, allowing for flexible parsing of data types such as JSON objects or binary files. The integration also supports searching individual fields from both Solr HTTP interface and CQL, providing a powerful tool for managing and querying large datasets stored in Cassandra.