com.facebook.presto.spi.relation

Class VariableReferenceExpression

java.lang.Object

com.facebook.presto.spi.relation.RowExpression

com.facebook.presto.spi.relation.VariableReferenceExpression

All Implemented Interfaces:

Comparable<VariableReferenceExpression>

@Immutable
public final class VariableReferenceExpression
extends RowExpression
implements Comparable<VariableReferenceExpression>

Constructor Summary

Constructors

Constructor and Description
VariableReferenceExpression(Optional<SourceLocation> sourceLocation, String name, Type type)

Method Summary

Modifier and Type	Method and Description
<R,C> R	accept(RowExpressionVisitor<R,C> visitor, C context)
RowExpression	canonicalize()
int	compareTo(VariableReferenceExpression o)
boolean	equals(Object obj)
String	getName()
Type	getType()
int	hashCode()
String	toString()

Methods inherited from class com.facebook.presto.spi.relation.RowExpression

getSourceLocation

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

VariableReferenceExpression

public VariableReferenceExpression(Optional<SourceLocation> sourceLocation,
                                   String name,
                                   Type type)

Method Detail

getName

public String getName()

getType

public Type getType()

Specified by:

getType in class RowExpression

hashCode

public int hashCode()

Specified by:

hashCode in class RowExpression

toString

public String toString()

Specified by:

toString in class RowExpression

accept

public <R,C> R accept(RowExpressionVisitor<R,C> visitor,
                      C context)

Specified by:

accept in class RowExpression

canonicalize

public RowExpression canonicalize()

Specified by:

canonicalize in class RowExpression

Returns:

Canonical form of RowExpression by removing non-critical information from the node, like source location. Does NOT canonicalize the child expressions.

equals

public boolean equals(Object obj)

Specified by:

equals in class RowExpression

compareTo

public int compareTo(VariableReferenceExpression o)

Specified by:

compareTo in interface Comparable<VariableReferenceExpression>