object JoinHandler extends Serializable
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- val LeftName: Name
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asInstanceOf[T0]: T0
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- def buildProjection[WF[_]](src: WorkflowBuilder[WF], leftField: Name, l: (Name) ⇒ Fix[ExprOp], rightField: Name, r: (Name) ⇒ Fix[ExprOp]): WorkflowBuilder[WF]
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equals(arg0: Any): Boolean
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- def fallback[WF[_], F[_]](first: JoinHandler[WF, [β$2$]OptionT[F, β$2$]], second: JoinHandler[WF, F])(implicit arg0: Monad[F]): JoinHandler[WF, F]
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def
mapReduce[M[_], WF[_]](queryModel: MongoQueryModel)(implicit arg0: Monad[M], arg1: Functor[WF], arg2: Coalesce[WF], arg3: Crush[WF], arg4: Crystallize[WF], M: MonadError[M, PlannerError], ev0: :<:[WorkflowOpCoreF, WF], ev1: RenderTree[WorkflowBuilder[WF]], ev2: Uni[ExprOp]): JoinHandler[WF, M]
Plan an arbitrary join using only "core" operators, which always means a map-reduce.
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def
notify(): Unit
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def
notifyAll(): Unit
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- def padEmpty(side: BsonField): Fix[ExprOp]
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def
pipeline[M[_], WF[_]](queryModel: MongoQueryModel, stats: (Collection) ⇒ slamdata.Predef.Option[CollectionStatistics], indexes: (Collection) ⇒ slamdata.Predef.Option[slamdata.Predef.Set[Index]])(implicit arg0: Monad[M], arg1: Functor[WF], arg2: Coalesce[WF], arg3: Crush[WF], arg4: Crystallize[WF], M: MonadError_[M, PlannerError], C: Classify[WF], ev0: :<:[WorkflowOpCoreF, WF], ev1: RenderTree[WorkflowBuilder[WF]], ev2: Uni[ExprOp]): JoinHandler[WF, [β$3$]OptionT[M, β$3$]]
When possible, plan a join using the more efficient $lookup operator in the aggregation pipeline.
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- object IsLookupFrom