Package org.apache.calcite.piglet

Class Handler

java.lang.Object

org.apache.calcite.piglet.Handler

public class Handler
extends Object

Walks over a Piglet AST and calls the corresponding methods in a PigRelBuilder.

Constructor Summary

Constructors

Constructor	Description
Handler(PigRelBuilder builder)

Method Summary

Modifier and Type	Method	Description
protected void	dump(RelNode rel)	Executes a relational expression and prints the output.
Handler	handle(Ast.Node node)	Creates relational expressions for a given AST node.

Methods inherited from class java.lang.Object

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

Constructor Details

Handler

public Handler(PigRelBuilder builder)

Method Details

handle

public Handler handle(Ast.Node node)

Creates relational expressions for a given AST node.

dump

protected void dump(RelNode rel)

Executes a relational expression and prints the output.

The default implementation does nothing.

Parameters:

rel - Relational expression