org.apache.paimon.types

枚举 DataTypeRoot

java.lang.Object

java.lang.Enum<DataTypeRoot>

org.apache.paimon.types.DataTypeRoot

所有已实现的接口:

Serializable, Comparable<DataTypeRoot>

@Public
public enum DataTypeRoot
extends Enum<DataTypeRoot>

An enumeration of Data type roots containing static information about logical data types.

A root is an essential description of a DataType without additional parameters. For example, a parameterized Data type DECIMAL(12,3) possesses all characteristics of its root DECIMAL. Additionally, a Data type root enables efficient comparison during the evaluation of types.

See the type-implementing classes for a more detailed description of each type.

Note to implementers: Whenever we perform a match against a type root (e.g. using a switch/case statement), it is recommended to:

• Order the items by the type root definition in this class for easy readability.
• Think about the behavior of all type roots for the implementation. A default fallback is dangerous when introducing a new type root in the future.

从以下版本开始:

0.4.0

枚举常量概要

枚举常量

枚举常量和说明
ARRAY
BIGINT
BINARY
BOOLEAN
CHAR
DATE
DECIMAL
DOUBLE
FLOAT
INTEGER
MAP
MULTISET
ROW
SMALLINT
TIME_WITHOUT_TIME_ZONE
TIMESTAMP_WITH_LOCAL_TIME_ZONE
TIMESTAMP_WITHOUT_TIME_ZONE
TINYINT
VARBINARY
VARCHAR

方法概要

限定符和类型	方法和说明
Set<DataTypeFamily>	getFamilies()
static DataTypeRoot	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static DataTypeRoot[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

CHAR

public static final DataTypeRoot CHAR

VARCHAR

public static final DataTypeRoot VARCHAR

BOOLEAN

public static final DataTypeRoot BOOLEAN

BINARY

public static final DataTypeRoot BINARY

VARBINARY

public static final DataTypeRoot VARBINARY

DECIMAL

public static final DataTypeRoot DECIMAL

TINYINT

public static final DataTypeRoot TINYINT

SMALLINT

public static final DataTypeRoot SMALLINT

INTEGER

public static final DataTypeRoot INTEGER

BIGINT

public static final DataTypeRoot BIGINT

FLOAT

public static final DataTypeRoot FLOAT

DOUBLE

public static final DataTypeRoot DOUBLE

DATE

public static final DataTypeRoot DATE

TIME_WITHOUT_TIME_ZONE

public static final DataTypeRoot TIME_WITHOUT_TIME_ZONE

TIMESTAMP_WITHOUT_TIME_ZONE

public static final DataTypeRoot TIMESTAMP_WITHOUT_TIME_ZONE

TIMESTAMP_WITH_LOCAL_TIME_ZONE

public static final DataTypeRoot TIMESTAMP_WITH_LOCAL_TIME_ZONE

ARRAY

public static final DataTypeRoot ARRAY

MULTISET

public static final DataTypeRoot MULTISET

MAP

public static final DataTypeRoot MAP

ROW

public static final DataTypeRoot ROW

方法详细资料

values

public static DataTypeRoot[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

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

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static DataTypeRoot valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

getFamilies

public Set<DataTypeFamily> getFamilies()