Package org.apache.calcite.rex

Class RexTransformer

java.lang.Object

org.apache.calcite.rex.RexTransformer

public class RexTransformer
extends Object

Takes a tree of RexNode objects and transforms it into another in one sense equivalent tree. Nodes in tree will be modified and hence tree will not remain unchanged.

NOTE: You must validate the tree of RexNodes before using this class.

Constructor Summary

Constructors

Constructor	Description
RexTransformer(RexNode root, RexBuilder rexBuilder)

Method Summary

Modifier and Type	Method	Description
RexNode	transformNullSemantics()

Methods inherited from class java.lang.Object

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

Constructor Details

RexTransformer

public RexTransformer(RexNode root,
 RexBuilder rexBuilder)

Method Details

transformNullSemantics

public RexNode transformNullSemantics()