Uses of Interface
org.apache.druid.segment.VirtualColumn

Packages that use VirtualColumn

Package	Description
org.apache.druid.data.input.impl
org.apache.druid.frame.util
org.apache.druid.java.util.common.granularity
org.apache.druid.query
org.apache.druid.query.groupby
org.apache.druid.query.topn
org.apache.druid.segment
org.apache.druid.segment.join.filter
org.apache.druid.segment.projections
org.apache.druid.segment.virtual

Uses of VirtualColumn in org.apache.druid.data.input.impl

Methods in org.apache.druid.data.input.impl with parameters of type VirtualColumn

Modifier and Type	Method	Description
AggregateProjectionSpec.Builder	AggregateProjectionSpec.Builder.virtualColumns(VirtualColumn... virtualColumns)

Uses of VirtualColumn in org.apache.druid.frame.util

Classes in org.apache.druid.frame.util that implement VirtualColumn

Modifier and Type	Class	Description
class	SettableLongVirtualColumn	Virtual column that returns a changeable value, via SettableLongVirtualColumn.setValue(long).

Uses of VirtualColumn in org.apache.druid.java.util.common.granularity

Methods in org.apache.druid.java.util.common.granularity with parameters of type VirtualColumn

Modifier and Type	Method	Description
static Granularity	Granularities.fromVirtualColumn(VirtualColumn virtualColumn)	Converts a virtual column with a single input time column into a Granularity if it is a TimestampFloorExprMacro.TimestampFloorExpr.

Uses of VirtualColumn in org.apache.druid.query

Methods in org.apache.druid.query that return VirtualColumn

Modifier and Type	Method	Description
VirtualColumn	UnnestDataSource.getVirtualColumn()

Methods in org.apache.druid.query with parameters of type VirtualColumn

Modifier and Type	Method	Description
static UnnestDataSource	UnnestDataSource.create(DataSource base, VirtualColumn virtualColumn, DimFilter unnestFilter)
Druids.ScanQueryBuilder	Druids.ScanQueryBuilder.virtualColumns(VirtualColumn... virtualColumns)
Druids.SearchQueryBuilder	Druids.SearchQueryBuilder.virtualColumns(VirtualColumn... vc)
Druids.TimeseriesQueryBuilder	Druids.TimeseriesQueryBuilder.virtualColumns(VirtualColumn... virtualColumns)

Uses of VirtualColumn in org.apache.druid.query.groupby

Methods in org.apache.druid.query.groupby with parameters of type VirtualColumn

Modifier and Type	Method	Description
GroupByQuery.Builder	GroupByQuery.Builder.setVirtualColumns(VirtualColumn... virtualColumns)

Uses of VirtualColumn in org.apache.druid.query.topn

Methods in org.apache.druid.query.topn with parameters of type VirtualColumn

Modifier and Type	Method	Description
TopNQueryBuilder	TopNQueryBuilder.virtualColumns(VirtualColumn... virtualColumns)

Uses of VirtualColumn in org.apache.druid.segment

Methods in org.apache.druid.segment that return VirtualColumn

Modifier and Type	Method	Description
VirtualColumn	VirtualColumns.findEquivalent(VirtualColumns otherVirtualColumns, VirtualColumn otherVirtualColumn)	Check if VirtualColumns.virtualColumns contains a virtual column which is equivalent to some other virtual column, ignoring output name, returning it if it exists or null if there is no equivalent virtual column.
VirtualColumn	UnnestCursorFactory.getUnnestColumn()
VirtualColumn	VirtualColumns.getVirtualColumn(String columnName)
VirtualColumn[]	VirtualColumns.getVirtualColumns()
default VirtualColumn	VirtualColumn.rewriteRequiredColumns(Map<String,String> columnRewrites)	Return a copy of this virtual column that is identical to this virtual column except that it operates on different columns, based on a renaming map where the key is the column to be renamed and the value is the new column.

Methods in org.apache.druid.segment with parameters of type VirtualColumn

Modifier and Type	Method	Description
static VirtualColumns	VirtualColumns.create(VirtualColumn... virtualColumns)
VirtualColumn	VirtualColumns.findEquivalent(VirtualColumns otherVirtualColumns, VirtualColumn otherVirtualColumn)	Check if VirtualColumns.virtualColumns contains a virtual column which is equivalent to some other virtual column, ignoring output name, returning it if it exists or null if there is no equivalent virtual column.
String	UnnestCursorFactory.getUnnestInputIfDirectAccess(VirtualColumn unnestColumn)	Returns the input of UnnestCursorFactory.unnestColumn, if it's a direct access; otherwise returns null.

Method parameters in org.apache.druid.segment with type arguments of type VirtualColumn

Modifier and Type	Method	Description
static VirtualColumns	VirtualColumns.create(Collection<VirtualColumn> virtualColumns)
static VirtualColumns	VirtualColumns.fromIterable(Iterable<VirtualColumn> virtualColumns)

Constructors in org.apache.druid.segment with parameters of type VirtualColumn

Modifier	Constructor	Description
	UnnestColumnValueSelectorCursor(Cursor cursor, ColumnSelectorFactory baseColumnSelectorFactory, VirtualColumn unnestColumn)
	UnnestCursorFactory(CursorFactory baseCursorFactory, VirtualColumn unnestColumn, DimFilter filter)
	UnnestDimensionCursor(Cursor cursor, ColumnSelectorFactory baseColumnSelectorFactory, VirtualColumn unnestColumn)
	UnnestSegment(Segment delegate, VirtualColumn unnestColumn, DimFilter filter)

Uses of VirtualColumn in org.apache.druid.segment.join.filter

Methods in org.apache.druid.segment.join.filter that return types with arguments of type VirtualColumn

Modifier and Type	Method	Description
Set<VirtualColumn>	JoinableClauses.getPostJoinVirtualColumns(VirtualColumns virtualColumns)	Retrieve subset of virtual columns which require inputs which are only present on the join table
Set<VirtualColumn>	JoinFilterPreAnalysis.getPostJoinVirtualColumns()
Set<VirtualColumn>	JoinFilterSplit.getPushDownVirtualColumns()

Constructor parameters in org.apache.druid.segment.join.filter with type arguments of type VirtualColumn

Modifier	Constructor	Description
	Builder(JoinFilterPreAnalysisKey key, Set<VirtualColumn> postJoinVirtualColumns)
	JoinFilterSplit(Filter baseTableFilter, Filter joinTableFilter, Set<VirtualColumn> pushDownVirtualColumns)

Uses of VirtualColumn in org.apache.druid.segment.projections

Methods in org.apache.druid.segment.projections with parameters of type VirtualColumn

Modifier and Type	Method	Description
ProjectionMatchBuilder	ProjectionMatchBuilder.addReferenceedVirtualColumn(VirtualColumn virtualColumn)	Add a query virtual column that can use projection physical columns as inputs to the match builder, which will later be added to ProjectionMatch.getCursorBuildSpec() if the projection matches
static ProjectionMatchBuilder	Projections.matchQueryVirtualColumn(VirtualColumn queryVirtualColumn, AggregateProjectionSchema projection, CursorBuildSpec queryCursorBuildSpec, Projections.PhysicalColumnChecker physicalColumnChecker, ProjectionMatchBuilder matchBuilder)
AggregateProjectionSchema.SchemaBuilder	AggregateProjectionSchema.SchemaBuilder.virtualColumns(VirtualColumn... virtualColumns)

Uses of VirtualColumn in org.apache.druid.segment.virtual

Classes in org.apache.druid.segment.virtual that implement VirtualColumn

Modifier and Type	Class	Description
class	ExpressionVirtualColumn
class	FallbackVirtualColumn	A virtual column that picks one column or another based on whether they exist.
class	ListFilteredVirtualColumn	VirtualColumn form of ListFilteredDimensionSpec, powered by ForwardingFilteredDimensionSelector
class	NestedFieldVirtualColumn	Optimized virtual column that can make direct selectors into a NestedDataComplexColumn or any associated nested fields (NestedFieldDictionaryEncodedColumn) including using their indexes.
class	NestedMergeVirtualColumn	Specialized virtual column for NestedDataExpressions.JsonMergeExprMacro.
class	NestedObjectVirtualColumn	Specialized virtual column for NestedDataExpressions.JsonObjectExprMacro.
class	PrefixFilteredVirtualColumn	Virtual column form of PrefixFilteredDimensionSpec
class	RegexFilteredVirtualColumn	Virtual column form of RegexFilteredDimensionSpec
class	SpecializedExpressionVirtualColumn	Base class for virtual columns that are specialized implementations of expressions.

Methods in org.apache.druid.segment.virtual that return VirtualColumn

Modifier and Type	Method	Description
VirtualColumn	ExpressionVirtualColumn.rewriteRequiredColumns(Map<String,String> columnRewrites)
VirtualColumn	NestedFieldVirtualColumn.rewriteRequiredColumns(Map<String,String> columnRewrites)
VirtualColumn	NestedMergeVirtualColumn.rewriteRequiredColumns(Map<String,String> columnRewrites)
VirtualColumn	NestedObjectVirtualColumn.rewriteRequiredColumns(Map<String,String> columnRewrites)