Package org.apache.drill.exec.ops

Interface Summary

Interface	Description
Consumer<T>
FragmentContext.ExecutorState
FragmentContextInterface	Fragment context interface: separates implementation from definition.
MetricDef	Interface that defines a metric.
OperatorContext	Per-operator services available for operator implementations.
OperatorStatReceiver	Interface for updating a statistic.
OptimizerRulesContext
UdfUtilities	Defines the query state and shared resources available to UDFs through injectables.

Class Summary

Class	Description
AccountingDataTunnel	Wrapper around a DataTunnel that tracks the status of batches sent to to other Drillbits.
AccountingUserConnection	Wrapper around a UserClientConnection that tracks the status of batches sent to User.
BaseFragmentContext	Common implementation for both the test and production versions of the fragment context.
BaseOperatorContext	Implementation of OperatorContext that provides services needed by most run-time operators.
BufferManagerImpl
ContextInformation	Provides query context information (such as query start time, query user, default schema etc.) for UDFs.
FragmentContext	Contextual objects required for execution of a particular fragment.
FragmentStats	Holds statistics of a particular (minor) fragment.
OperatorMetricRegistry	Registry of operator metrics.
OperatorStats
OperatorUtilities	Utility methods, formerly on the OperatorContext class, that work with operators.
OpProfileDef
QueryContext
StatusHandler	Listener that keeps track of the status of batches sent, and updates the SendingAccountor when status is received for each batch
ViewExpansionContext	Contains context information about view expansion(s) in a query.