 
| Name | Description | Type | Package | Framework | 
| CalcitePrepare .SparkHandler | Callback to register Spark as the main engine. | Interface | org.apache.calcite.jdbc.CalcitePrepare | Calcite | 
| CalcitePrepare .SparkHandler .RuleSetBuilder | Allows Spark to declare the rules it needs. | Interface | org.apache.calcite.jdbc.CalcitePrepare.SparkHandler | Calcite |