| Name | Description | Type | Package | Framework |
| SparkRuntime | Runtime utilities for Calcite's Spark adapter. | Class | org.apache.calcite.adapter.spark | Calcite |
| SparkRuntime .CalciteFlatMapFunction | Combines linq4j Function and Spark FlatMapFunction. | Class | org.apache.calcite.adapter.spark.SparkRuntime | Calcite |