Package org.apache.druid.segment.projections

Interface BaseTableProjectionSchema

All Superinterfaces:

ProjectionSchema

All Known Implementing Classes:

RollupTableProjectionSchema, TableProjectionSchema

public interface BaseTableProjectionSchema
extends ProjectionSchema

Druid table schema expressed as a ProjectionSchema, this can be thought of as the super-projection that all other projections of the table are built from.

See Also:

• TableProjectionSchema
• RollupTableProjectionSchema

Method Summary

Modifier and Type	Method	Description
Metadata	asMetadata(List<AggregateProjectionMetadata> projections)	Convert to v9 Metadata when supplied with an added list of projections
List<String>	getDimensionNames()	Get list of 'dimension' columns, excluding ColumnHolder.TIME_COLUMN_NAME
default String	getName()
default List<OrderBy>	getOrderingWithTimeColumnSubstitution()	Projection sort order with ProjectionSchema.getTimeColumnName() substituted with ColumnHolder.TIME_COLUMN_NAME
default String	getTimeColumnName()

Methods inherited from interface org.apache.druid.segment.projections.ProjectionSchema

getColumnNames, getEffectiveGranularity, getOrdering, getTimeColumnPosition, getVirtualColumns

Method Details

getName

default String getName()

Specified by:

getName in interface ProjectionSchema

getTimeColumnName

@Nullable
default String getTimeColumnName()

Specified by:

getTimeColumnName in interface ProjectionSchema

getOrderingWithTimeColumnSubstitution

default List<OrderBy> getOrderingWithTimeColumnSubstitution()

Description copied from interface: ProjectionSchema

Projection sort order with ProjectionSchema.getTimeColumnName() substituted with ColumnHolder.TIME_COLUMN_NAME

Specified by:

getOrderingWithTimeColumnSubstitution in interface ProjectionSchema

getDimensionNames

List<String> getDimensionNames()

Get list of 'dimension' columns, excluding ColumnHolder.TIME_COLUMN_NAME

asMetadata

Metadata asMetadata(@Nullable
 List<AggregateProjectionMetadata> projections)

Convert to v9 Metadata when supplied with an added list of projections