Package org.apache.druid.sql.calcite.expression

Enum Class DruidExpression.NodeType

java.lang.Object

java.lang.Enum<DruidExpression.NodeType>

org.apache.druid.sql.calcite.expression.DruidExpression.NodeType

All Implemented Interfaces:

Serializable, Comparable<DruidExpression.NodeType>, Constable

Enclosing class:

DruidExpression

public static enum DruidExpression.NodeType
extends Enum<DruidExpression.NodeType>

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
EXPRESSION	Standard native druid expression, which can compute a string that can be parsed into Expr, or used as an ExpressionVirtualColumn
IDENTIFIER	Identifier for a direct physical or virtual column access (column name or virtual column name)
LITERAL	constant value
SPECIALIZED	Expression backed by a specialized VirtualColumn, which might provide more optimized evaluation than is possible with the standard

Method Summary

Modifier and Type	Method	Description
static DruidExpression.NodeType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static DruidExpression.NodeType[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

LITERAL

public static final DruidExpression.NodeType LITERAL

constant value

IDENTIFIER

public static final DruidExpression.NodeType IDENTIFIER

Identifier for a direct physical or virtual column access (column name or virtual column name)

EXPRESSION

public static final DruidExpression.NodeType EXPRESSION

Standard native druid expression, which can compute a string that can be parsed into Expr, or used as an ExpressionVirtualColumn

SPECIALIZED

public static final DruidExpression.NodeType SPECIALIZED

Expression backed by a specialized VirtualColumn, which might provide more optimized evaluation than is possible with the standard

Method Details

values

public static DruidExpression.NodeType[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static DruidExpression.NodeType valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null