Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.calcite.jdbc.CalcitePrepare.SparkHandler
  CalcitePrepare.SparkHandler.RuleSetBuilder

Fields
Modifier and Type	Field	Description
`private static java.io.File`	`CLASS_DIR`
`private java.util.concurrent.atomic.AtomicInteger`	`classId`
`private HttpServer`	`classServer`
`private static SparkHandlerImpl`	`instance`
`private org.apache.spark.api.java.JavaSparkContext`	`sparkContext`

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ArrayBindable`	`compile(ClassDeclaration expr, java.lang.String s)`
`boolean`	`enabled()`
`RelNode`	`flattenTypes(RelOptPlanner planner, RelNode rootRel, boolean restructure)`
`static CalcitePrepare.SparkHandler`	`instance()`	Creates a SparkHandlerImpl, initializing on first call.
`void`	`registerRules(CalcitePrepare.SparkHandler.RuleSetBuilder builder)`
`java.lang.Object`	`sparkContext()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

private final java.util.concurrent.atomic.AtomicInteger classId

private final org.apache.spark.api.java.JavaSparkContext sparkContext

private static SparkHandlerImpl instance

private static final java.io.File CLASS_DIR

instance
```
public static CalcitePrepare.SparkHandler instance()
```
Creates a SparkHandlerImpl, initializing on first call. Calcite-core calls this via reflection.

public RelNode flattenTypes(RelOptPlanner planner,
                            RelNode rootRel,
                            boolean restructure)

public void registerRules(CalcitePrepare.SparkHandler.RuleSetBuilder builder)

public ArrayBindable compile(ClassDeclaration expr,
                             java.lang.String s)

Class SparkHandlerImpl