Package org.apache.druid.segment.join

package org.apache.druid.segment.join

Related Packages

Package	Description
org.apache.druid.segment
org.apache.druid.segment.join.filter
org.apache.druid.segment.join.lookup
org.apache.druid.segment.join.table

Class	Description
Equality	Represents a join condition between a left-hand-side expression (leftExpr) and a right-hand-side direct column access (rightColumn).
FrameBasedInlineJoinableFactory	Creates a joinable from the FrameBasedInlineDataSource.
HashJoinEngine
HashJoinSegment	Represents a deep, left-heavy join of a left-hand side baseSegment onto a series of right-hand side clauses.
HashJoinSegmentCursorFactory
InlineJoinableFactory	A JoinableFactory for InlineDataSource.
Joinable	Represents something that can be the right-hand side of a join.
Joinable.ColumnValuesWithUniqueFlag
JoinableClause	Represents everything about a join clause except for the left-hand datasource.
JoinableFactory	Utility for creating Joinable objects.
JoinableFactoryWrapper	A wrapper class over JoinableFactory for working with Joinable related classes.
JoinConditionAnalysis	Represents analysis of a join condition.
JoinMatcher	An interface returned by Joinable.makeJoinMatcher(org.apache.druid.segment.ColumnSelectorFactory, org.apache.druid.segment.join.JoinConditionAnalysis, boolean, org.apache.druid.java.util.common.io.Closer) and used by HashJoinEngine to implement a join.
JoinPrefixUtils	Utility class for working with prefixes in join operations
JoinType
MapJoinableFactory	A JoinableFactory that delegates to the appropriate factory based on the datasource.
NoopJoinableFactory
PossiblyNullColumnValueSelector<T>	A ColumnValueSelector that wraps a base selector but might also generate null values on demand.
PossiblyNullDimensionSelector
PostJoinCursor	A Cursor decorator used by HashJoinSegmentCursorFactory.makeCursorHolder(CursorBuildSpec) to add post-join virtual columns and filters.