Package org.apache.drill.exec.physical.base

Interface Leaf

All Superinterfaces:
FragmentLeaf, GraphValue<PhysicalOperator>, Iterable<PhysicalOperator>, PhysicalOperator
All Known Subinterfaces:
DbGroupScan, DbSubScan, FileGroupScan, GroupScan, IndexGroupScan, Scan, SubScan
All Known Implementing Classes:
AbstractDbGroupScan, AbstractDbSubScan, AbstractFileGroupScan, AbstractGroupScan, AbstractGroupScanWithMetadata, AbstractParquetGroupScan, AbstractParquetRowGroupScan, AbstractSubScan, DirectGroupScan, DirectSubScan, EasyGroupScan, EasySubScan, EnumerableGroupScan, EnumerableSubScan, InfoSchemaGroupScan, InfoSchemaSubScan, MetadataDirectGroupScan, MockGroupScanPOP, MockSubScanPOP, ParquetGroupScan, ParquetRowGroupScan, SchemalessScan, SystemTableScan, UnnestPOP, Values
public interface Leaf extends FragmentLeaf
Operator which specifically is a lowest level leaf node of a query plan across all possible fragments. Currently, the only operator that is a Leaf node are GroupScan nodes. Ultimately this could include use of Cache scans and other types of atypical data production systems.