org.apache.shardingsphere.sql.parser.core.constant

Enum Paren

java.lang.Object

java.lang.Enum<Paren>

org.apache.shardingsphere.sql.parser.core.constant.Paren

All Implemented Interfaces:

Serializable, Comparable<Paren>

public enum Paren
extends Enum<Paren>

Paren of SQL.

Author:

zhangliang

Enum Constant Summary

Enum Constants

Enum Constant and Description
BRACES
BRACKET
PARENTHESES

Method Summary

Modifier and Type	Method and Description
static boolean	isLeftParen(char token) Judge passed token is left paren or not.
static boolean	match(char leftToken, char rightToken) Judge left paren match right paren or not.
static Paren	valueOf(String name) Returns the enum constant of this type with the specified name.
static Paren[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

PARENTHESES

public static final Paren PARENTHESES

BRACKET

public static final Paren BRACKET

BRACES

public static final Paren BRACES

Method Detail

values

public static Paren[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Paren c : Paren.values())
    System.out.println(c);

Returns:

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

valueOf

public static Paren valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null

isLeftParen

public static boolean isLeftParen(char token)

Judge passed token is left paren or not.

Parameters:

token - token

Returns:

is left paren or not

match

public static boolean match(char leftToken,
                            char rightToken)

Judge left paren match right paren or not.

Parameters:

leftToken - left token

rightToken - right token

Returns:

match or not