org.eigenbase.oj.rel
Interface JavaLoopRel

All Superinterfaces:

Cloneable, JavaRel, RelNode

public interface JavaLoopRel
extends JavaRel

A relational expression which implements itself by generating Java flow-control statements. This interface corresponds to the Java calling-convention.

For example, JavaFilterRe implements filtering logic by generating an if (...) { ... } construct.

Since:

May 27, 2004

Version:

$Id: //open/dev/farrago/src/org/eigenbase/oj/rel/JavaLoopRel.java#10 $

Author:

jhyde

Field Summary

Fields inherited from interface org.eigenbase.rel.RelNode

emptyArray

Method Summary

void	implementJavaParent(JavaRelImplementor implementor, int ordinal) Calls a parent back.

Methods inherited from interface org.eigenbase.oj.rel.JavaRel

implement

Methods inherited from interface org.eigenbase.rel.RelNode

childrenAccept, clone, collectVariablesSet, collectVariablesUsed, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getOrCreateCorrelVariable, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraits, getVariablesStopped, isAccessTo, isDistinct, isValid, onRegister, recomputeDigest, registerCorrelVariable, replaceInput, setCorrelVariable

Method Detail

implementJavaParent

void implementJavaParent(JavaRelImplementor implementor,
                         int ordinal)

Calls a parent back.

Parameters:

implementor - implementor

ordinal - of the child which is making the call