Package org.apache.drill.common.expression.visitors
package org.apache.drill.common.expression.visitors
Visitors for validating or optimizing logical expressions.
These visitors are used to provide feedback to users on invalid expressions
as well as some basic optimizations applied during planning.
-
ClassDescriptionAbstractExprVisitor<T,
VAL, EXCEP extends Exception> ExprVisitor<T,VAL, EXCEP extends Exception>