Package org.apache.druid.segment.projections

Class RollupTableProjectionSchema

java.lang.Object

org.apache.druid.segment.projections.RollupTableProjectionSchema

All Implemented Interfaces:

BaseTableProjectionSchema, ProjectionSchema

public class RollupTableProjectionSchema
extends Object
implements BaseTableProjectionSchema

Field Summary

Fields

Modifier and Type	Field	Description
static final String	TYPE_NAME

Constructor Summary

Constructors

Constructor	Description
RollupTableProjectionSchema(VirtualColumns virtualColumns, List<String> groupingColumns, AggregatorFactory[] aggregators, List<OrderBy> ordering)

Method Summary

Modifier and Type	Method	Description
Metadata	asMetadata(List<AggregateProjectionMetadata> projections)	Convert to v9 Metadata when supplied with an added list of projections
boolean	equals(Object o)
static RollupTableProjectionSchema	fromMetadata(List<String> dims, Metadata metadata)
AggregatorFactory[]	getAggregators()
List<String>	getColumnNames()
List<String>	getDimensionNames()	Get list of 'dimension' columns, excluding ColumnHolder.TIME_COLUMN_NAME
Granularity	getEffectiveGranularity()	If ProjectionSchema.getTimeColumnName() references a column in ProjectionSchema.getVirtualColumns() which is a time_floor expression, this method translates it into a Granularity.
List<String>	getGroupingColumns()
List<OrderBy>	getOrdering()	Projection sort order
int	getTimeColumnPosition()	The position of the time column in the column list
VirtualColumns	getVirtualColumns()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

getName, getOrderingWithTimeColumnSubstitution, getTimeColumnName

Field Details

TYPE_NAME

public static final String TYPE_NAME

See Also:

• Constant Field Values

Constructor Details

RollupTableProjectionSchema

public RollupTableProjectionSchema(VirtualColumns virtualColumns,
 List<String> groupingColumns,
 @Nullable
 AggregatorFactory[] aggregators,
 List<OrderBy> ordering)

Method Details

fromMetadata

public static RollupTableProjectionSchema fromMetadata(List<String> dims,
 Metadata metadata)

getColumnNames

public List<String> getColumnNames()

Specified by:

getColumnNames in interface ProjectionSchema

getVirtualColumns

public VirtualColumns getVirtualColumns()

Specified by:

getVirtualColumns in interface ProjectionSchema

getGroupingColumns

public List<String> getGroupingColumns()

getAggregators

public AggregatorFactory[] getAggregators()

getTimeColumnPosition

public int getTimeColumnPosition()

Description copied from interface: ProjectionSchema

The position of the time column in the column list

Specified by:

getTimeColumnPosition in interface ProjectionSchema

getEffectiveGranularity

public Granularity getEffectiveGranularity()

Description copied from interface: ProjectionSchema

If ProjectionSchema.getTimeColumnName() references a column in ProjectionSchema.getVirtualColumns() which is a time_floor expression, this method translates it into a Granularity.

Specified by:

getEffectiveGranularity in interface ProjectionSchema

getOrdering

public List<OrderBy> getOrdering()

Description copied from interface: ProjectionSchema

Projection sort order

Specified by:

getOrdering in interface ProjectionSchema

getDimensionNames

public List<String> getDimensionNames()

Description copied from interface: BaseTableProjectionSchema

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

Specified by:

getDimensionNames in interface BaseTableProjectionSchema

asMetadata

public Metadata asMetadata(@Nullable
 List<AggregateProjectionMetadata> projections)

Description copied from interface: BaseTableProjectionSchema

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

Specified by:

asMetadata in interface BaseTableProjectionSchema

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object