org.eigenbase.oj.rel
Interface JavaRel

All Superinterfaces:

Cloneable, RelNode

All Known Subinterfaces:

JavaLoopRel, JavaSelfRel, ResultSetRel

All Known Implementing Classes:

FarragoJavaUdxRel, FennelToIteratorConverter, IterCalcRel, IterConcatenateRel, IterOneRowRel, JdbcQuery, MedJdbcQueryRel, MedMdrClassExtentRel, MedMdrJoinRel, MedMockIterRel, ResultSetToFarragoIteratorConverter, VolcanoPlannerTraitTest.IterSingleRel

public interface JavaRel
extends RelNode

A relational expression of one of the the Java-based calling conventions.

Objects which implement this interface must:

• extend AbstractRelNode, and
• return one of the following calling-conventions from their RelNode.getConvention() method:
  • ARRAY,
  • ITERABLE,
  • ITERATOR,
  • COLLECTION,
  • MAP,
  • VECTOR,
  • HASHTABLE,
  • JAVA

For JAVA calling-convention, see the sub-interface JavaLoopRel, and the auxilliary interface JavaSelfRel.

Since:

Nov 22, 2003

Version:

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

Author:

jhyde

Field Summary

Fields inherited from interface org.eigenbase.rel.RelNode

emptyArray

Method Summary

ParseTree

implement(JavaRelImplementor implementor) Creates a plan for this expression according to a calling convention.

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

implement

ParseTree implement(JavaRelImplementor implementor)

Creates a plan for this expression according to a calling convention.

Parameters:

implementor - implementor