Package net.hydromatic.morel.ast

Class Core.Union

java.lang.Object

net.hydromatic.morel.ast.AstNode

net.hydromatic.morel.ast.Core.BaseNode

net.hydromatic.morel.ast.Core.FromStep

net.hydromatic.morel.ast.Core.SetStep

net.hydromatic.morel.ast.Core.Union

Enclosing class:

Core

public static class Core.Union
extends Core.SetStep

A union clause in a from expression.

Field Summary

Fields inherited from class net.hydromatic.morel.ast.Core.SetStep

args, distinct

Fields inherited from class net.hydromatic.morel.ast.Core.FromStep

env

Fields inherited from class net.hydromatic.morel.ast.AstNode

op, pos

Constructor Summary

Constructors

Constructor	Description
Union(Core.StepEnv env, boolean distinct, com.google.common.collect.ImmutableList<Core.Exp> args)

Method Summary

Modifier and Type	Method	Description
Core.Union	accept(Shuttle shuttle)	Accepts a shuttle, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.
void	accept(Visitor visitor)	Accepts a visitor, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.
Core.Union	copy(boolean distinct, List<Core.Exp> args, Core.StepEnv env)

Methods inherited from class net.hydromatic.morel.ast.Core.SetStep

isOrdered, unparse

Methods inherited from class net.hydromatic.morel.ast.Core.FromStep

unparse

Methods inherited from class net.hydromatic.morel.ast.AstNode

toString, unparse

Methods inherited from class java.lang.Object

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

Constructor Details

Union

Union(Core.StepEnv env,
 boolean distinct,
 com.google.common.collect.ImmutableList<Core.Exp> args)

Method Details

accept

public Core.Union accept(Shuttle shuttle)

Description copied from class: AstNode

Accepts a shuttle, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.

Specified by:

accept in class Core.FromStep

accept

public void accept(Visitor visitor)

Description copied from class: AstNode

Accepts a visitor, calling the Shuttle.visit(net.hydromatic.morel.ast.Ast.Literal) method appropriate to the type of this node, and returning the result.

Overrides:

accept in class Core.BaseNode

copy

public Core.Union copy(boolean distinct,
 List<Core.Exp> args,
 Core.StepEnv env)

Specified by:

copy in class Core.SetStep