org.eigenbase.oj.rel
Class IterRules

java.lang.Object
  org.eigenbase.oj.rel.IterRules

public abstract class IterRules
extends Object

A collection of optimizer rules related to the iterator calling convention.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/oj/rel/IterRules.java#21 $

Nested Class Summary

static class	IterRules.HomogeneousUnionToIteratorRule Refinement of IterRules.UnionToIteratorRule which only applies to a UnionRel all of whose input rows are the same type as its output row.
static class	IterRules.IterCalcRule Rule to convert a CalcRel to an IterCalcRel.
static class	IterRules.OneRowToIteratorRule
static class	IterRules.UnionToIteratorRule Rule to convert a UnionRel to iterator calling convention.

Constructor Summary

IterRules()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IterRules

public IterRules()