io.delta.kernel.expressions

Class Column

Object

io.delta.kernel.expressions.Column

All Implemented Interfaces:

Expression

@Evolving
public final class Column
extends Object
implements Expression

An expression type that refers to a column (case-sensitive) in the input. The column name is either a single name or array of names (when referring to a nested column).

Since:

3.0.0

Constructor Summary

Constructors

Constructor and Description
Column(String name) Create a column expression for referring to a column.
Column(String[] names) Create a column expression to refer to a nested column.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
java.util.List<Expression>	getChildren()
String[]	getNames()
int	hashCode()
String	toString()

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Column

public Column(String name)

Create a column expression for referring to a column.

Column

public Column(String[] names)

Create a column expression to refer to a nested column.

Method Detail

getNames

public String[] getNames()

Returns:

the column names. Each part in the name correspond to one level of nested reference.

getChildren

public java.util.List<Expression> getChildren()

Specified by:

getChildren in interface Expression

Returns:

a list of expressions that are input to this expression.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object