Class DereferenceExpression

java.lang.Object

io.trino.sql.tree.Node

io.trino.sql.tree.Expression

io.trino.sql.tree.DereferenceExpression

public class DereferenceExpression
extends Expression

Constructor Summary

Constructors

Constructor	Description
DereferenceExpression(Expression base, Identifier field)
DereferenceExpression(Identifier label)
DereferenceExpression(NodeLocation location, Expression base, Identifier field)
DereferenceExpression(NodeLocation location, Identifier label)

Method Summary

Modifier and Type	Method	Description
<R, C> R	accept(AstVisitor<R,C> visitor, C context)	Accessible for AstVisitor, use AstVisitor.process(Node, Object) instead.
boolean	equals(Object o)
static Expression	from(QualifiedName name)
Expression	getBase()
List<Node>	getChildren()
Optional<Identifier>	getField()
static QualifiedName	getQualifiedName(DereferenceExpression expression)	If this DereferenceExpression looks like a QualifiedName, return QualifiedName.
int	hashCode()
static boolean	isQualifiedAllFieldsReference(Expression expression)
boolean	shallowEquals(Node other)	Compare with another node by considering internal state excluding any Node returned by getChildren()

Methods inherited from class io.trino.sql.tree.Expression

toString

Methods inherited from class io.trino.sql.tree.Node

getLocation

Methods inherited from class java.lang.Object

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

Constructor Details

DereferenceExpression

public DereferenceExpression(Expression base,
 Identifier field)

DereferenceExpression

public DereferenceExpression(NodeLocation location,
 Expression base,
 Identifier field)

DereferenceExpression

public DereferenceExpression(Identifier label)

DereferenceExpression

public DereferenceExpression(NodeLocation location,
 Identifier label)

Method Details

accept

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

Description copied from class: Expression

Accessible for AstVisitor, use AstVisitor.process(Node, Object) instead.

Overrides:

accept in class Expression

getChildren

public List<Node> getChildren()

Specified by:

getChildren in class Node

getBase

public Expression getBase()

getField

public Optional<Identifier> getField()

getQualifiedName

public static QualifiedName getQualifiedName(DereferenceExpression expression)

If this DereferenceExpression looks like a QualifiedName, return QualifiedName. Otherwise return null

from

public static Expression from(QualifiedName name)

isQualifiedAllFieldsReference

public static boolean isQualifiedAllFieldsReference(Expression expression)

equals

public boolean equals(Object o)

Specified by:

equals in class Node

hashCode

public int hashCode()

Specified by:

hashCode in class Node

shallowEquals

public boolean shallowEquals(Node other)

Description copied from class: Node

Compare with another node by considering internal state excluding any Node returned by getChildren()

Overrides:

shallowEquals in class Node