com.bigdata.bop.controller

Interface INamedSubqueryOp

All Known Implementing Classes:

HTreeNamedSubqueryOp, JVMNamedSubqueryOp

public interface INamedSubqueryOp

Marker interface for named subquery evaluation. Solutions from the pipeline flow through this operator without modification. The subquery is evaluated exactly once, the first time this operator is invoked, and the solutions for the subquery are written onto a hash index. Those solutions are then joined back within the query at latter points in the query plan using a solution set hash join.

Author:

Bryan Thompson

See Also:

SolutionSetHashJoinOp