Interface RelBuilderFactory

  • public interface RelBuilderFactory
    A partially-created RelBuilder.

    Add a cluster, and optionally a schema, when you want to create a builder.

    A ProtoRelBuilder can be shared among queries, and thus can be inside a RelOptRule. It is a nice way to encapsulate the policy that this particular rule instance should create DrillFilter and DrillProject versus HiveFilter and HiveProject.

    See Also: