Package org.apache.calcite.linq4j.tree

Class VisitorImpl<R>

  • Type Parameters:
    R - Return type
    All Implemented Interfaces:
    Visitor<R>
    Direct Known Subclasses:
    BlockBuilder.UseCounter

    public class VisitorImpl<R>
extends Object
implements Visitor<R>
    Default implementation of Visitor, which traverses a tree but does nothing. In a derived class you can override selected methods.