MySqlType (Reactive Relational Database Connectivity

java.lang.Object
- java.lang.Enum<MySqlType>
- - io.asyncer.r2dbc.mysql.constant.MySqlType

All Implemented Interfaces:

io.r2dbc.spi.Type, Serializable, Comparable<MySqlType>
```
public enum MySqlType
extends Enum<MySqlType>
implements io.r2dbc.spi.Type
```
Enumeration of MySQL data types.

Nested Class Summary
- Nested classes/interfaces inherited from interface io.r2dbc.spi.Type
  io.r2dbc.spi.Type.InferredType

Enum Constant Summary

Enum Constants
Enum Constant and Description
`BIGINT` A signed 64-bits integer type.
`BIGINT_UNSIGNED` An unsigned 64-bits integer type.
`BIT` A bitmap type.
`BLOB` A binary type.
`DATE` A date type.
`DATETIME` A date time type.
`DECIMAL` A decimal number type in string form.
`DOUBLE` A IEEE-754 double-precision floating point number type.
`ENUM` A enumerable string type.
`FLOAT` A IEEE-754 single-precision floating point number type.
`GEOMETRY` A geometry type.
`INT` A signed 32-bits integer type.
`INT_UNSIGNED` An unsigned 32-bits integer type.
`JSON` A json type.
`LONGBLOB` A binary type.
`LONGTEXT` A string type.
`MEDIUMBLOB` A binary type.
`MEDIUMINT` A signed 24-bits integer type.
`MEDIUMINT_UNSIGNED` An unsigned 24-bits integer type.
`MEDIUMTEXT` A string type.
`NULL` A `null` type.
`SET` A string set type.
`SMALLINT` A signed 16-bits integer type.
`SMALLINT_UNSIGNED` An unsigned 16-bits integer type.
`TEXT` A string type.
`TIME` A time type.
`TIMESTAMP` A timestamp type, it will automatically synchronize with the server timezone.
`TINYBLOB` A binary type.
`TINYINT` A signed 8-bits integer type.
`TINYINT_UNSIGNED` An unsigned 8-bits integer type.
`TINYTEXT` A string type.
`UNKNOWN` Unknown type, should check the native type identifier and column definitions.
`VARBINARY` A binary type.
`VARCHAR` A variable-length string type.
`YEAR` A year type.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getBinarySize()` Get the fixed byte size of the data type in the binary protocol, otherwise 0 means that there is no fixed size.
`int`	`getId()`
`Class<?>`	`getJavaType()`
`String`	`getName()`
`boolean`	`isBinary()` Checks if this type can be decoded as a binary buffer, all string types should be `true`.
`boolean`	`isFractional()` Checks if this type can be decoded as a fractional number.
`boolean`	`isLob()` Checks if this type is a BLOB or CLOB.
`boolean`	`isNumeric()` Checks if this type is a numeric type.
`boolean`	`isString()` Checks if this type can be decoded as a string without loss of precision and without ambiguity in both of text and binary protocol.
`static MySqlType`	`of(int id, ColumnDefinition definition)`
`static MySqlType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static MySqlType[]`	`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
  - UNKNOWN
```
public static final MySqlType UNKNOWN
```
    Unknown type, should check the native type identifier and column definitions.
  - DECIMAL
```
public static final MySqlType DECIMAL
```
    A decimal number type in string form.
    It should be defined as DECIMAL(M = 10, D = 0):
    1. M is the maximum number of digits/precision. The range is 1 to 65
    2. D is the number of scale. The range is 0 to 30, cannot be greater than M
  - TINYINT
```
public static final MySqlType TINYINT
```
    A signed 8-bits integer type.
  - TINYINT_UNSIGNED
```
public static final MySqlType TINYINT_UNSIGNED
```
    An unsigned 8-bits integer type.
  - SMALLINT
```
public static final MySqlType SMALLINT
```
    A signed 16-bits integer type.
  - SMALLINT_UNSIGNED
```
public static final MySqlType SMALLINT_UNSIGNED
```
    An unsigned 16-bits integer type.
  - INT
```
public static final MySqlType INT
```
    A signed 32-bits integer type.
  - INT_UNSIGNED
```
public static final MySqlType INT_UNSIGNED
```
    An unsigned 32-bits integer type.
  - FLOAT
```
public static final MySqlType FLOAT
```
    A IEEE-754 single-precision floating point number type. It cannot be unsigned when the server version is 8.0 or higher. Otherwise, the server will report a warning when defining the column.
  - DOUBLE
```
public static final MySqlType DOUBLE
```
    A IEEE-754 double-precision floating point number type. It cannot be unsigned when the server version is 8.0 or higher. Otherwise, the server will report a warning when defining the column.
  - NULL
```
public static final MySqlType NULL
```
    A null type.
  - TIMESTAMP
```
public static final MySqlType TIMESTAMP
```
    A timestamp type, it will automatically synchronize with the server timezone. It still uses string format to transfer the timestamp value.
  - BIGINT
```
public static final MySqlType BIGINT
```
    A signed 64-bits integer type.
  - BIGINT_UNSIGNED
```
public static final MySqlType BIGINT_UNSIGNED
```
    An unsigned 64-bits integer type.
  - MEDIUMINT
```
public static final MySqlType MEDIUMINT
```
    A signed 24-bits integer type.
  - MEDIUMINT_UNSIGNED
```
public static final MySqlType MEDIUMINT_UNSIGNED
```
    An unsigned 24-bits integer type.
  - DATE
```
public static final MySqlType DATE
```
    A date type. It contains neither time nor timezone.
  - TIME
```
public static final MySqlType TIME
```
    A time type. It contains neither date nor timezone.
  - DATETIME
```
public static final MySqlType DATETIME
```
    A date time type. It does not contain timezone. It uses string format to transfer the value.
  - YEAR
```
public static final MySqlType YEAR
```
    A year type. It contains neither leap year information nor timezone.
  - VARCHAR
```
public static final MySqlType VARCHAR
```
    A variable-length string type. The MySQL uses custom character collation rules, so the NVARCHAR is an alias of this type.
  - BIT
```
public static final MySqlType BIT
```
    A bitmap type. The precision range is 1 to 64.
  - JSON
```
public static final MySqlType JSON
```
    A json type. The maximum length is 4,294,967,295 characters.
    Note: from MariaDB 10.2.7, it is an alias for LONGBLOB.
  - ENUM
```
public static final MySqlType ENUM
```
    A enumerable string type. It is a virtual type, server will enabled ENUMERABLE in column definitions and type is as VARCHAR.
  - SET
```
public static final MySqlType SET
```
    A string set type. It is a virtual type, server will enabled SET in column definitions and type is as VARCHAR.
  - TINYBLOB
```
public static final MySqlType TINYBLOB
```
    A binary type. The maximum length 255 bytes.
  - TINYTEXT
```
public static final MySqlType TINYTEXT
```
    A string type. The maximum length 255 characters.
  - MEDIUMBLOB
```
public static final MySqlType MEDIUMBLOB
```
    A binary type. The maximum length 16,777,215 bytes.
  - MEDIUMTEXT
```
public static final MySqlType MEDIUMTEXT
```
    A string type. The maximum length 16,777,215 characters.
  - LONGBLOB
```
public static final MySqlType LONGBLOB
```
    A binary type. The maximum length is 4,294,967,295 bytes.
  - LONGTEXT
```
public static final MySqlType LONGTEXT
```
    A string type. The maximum length is 4,294,967,295 characters.
  - BLOB
```
public static final MySqlType BLOB
```
    A binary type. The maximum length 65,535 bytes.
  - TEXT
```
public static final MySqlType TEXT
```
    A string type. The maximum length 65,535 characters.
  - VARBINARY
```
public static final MySqlType VARBINARY
```
    A binary type. It uses the same identifier as the varchar.
  - GEOMETRY
```
public static final MySqlType GEOMETRY
```
    A geometry type. The type can be more specific. Such as POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON and GEOMETRYCOLLECTION.
    Explaining this type is a huge task. It's recommended to find official documents to help.
- Method Detail
  - values
```
public static MySqlType[] 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 (MySqlType c : MySqlType.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static MySqlType 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
  - getId
```
public int getId()
```
  - getJavaType
```
public Class<?> getJavaType()
```
    Specified by:
    
    getJavaType in interface io.r2dbc.spi.Type
  - getName
```
public String getName()
```
    Specified by:
    
    getName in interface io.r2dbc.spi.Type
  - isLob
```
public boolean isLob()
```
    Checks if this type is a BLOB or CLOB.
    
    Returns:
    
    if it is a BLOB/CLOB type.
  - isString
```
public boolean isString()
```
    Checks if this type can be decoded as a string without loss of precision and without ambiguity in both of text and binary protocol. e.g. JSON, VARCHAR, SET, etc.
    Counterexample:
    - INT/DOUBLE/DATETIME uses different encodings in text protocol and binary protocol.
    - BIT/VARBINARY/BLOB cannot be decoded as a string.
    Returns:
    
    if it is a string type.
  - isNumeric
```
public boolean isNumeric()
```
    Checks if this type is a numeric type. The YEAR is an 16-bits integer.
    
    Returns:
    
    if it is a numeric type.
  - isFractional
```
public boolean isFractional()
```
    Checks if this type can be decoded as a fractional number. This means that it may have the scale of the column.
    
    Returns:
    
    if it is a fractional type.
  - isBinary
```
public boolean isBinary()
```
    Checks if this type can be decoded as a binary buffer, all string types should be true.
    
    Returns:
    
    if it is a binary type.
  - getBinarySize
```
public int getBinarySize()
```
    Get the fixed byte size of the data type in the binary protocol, otherwise 0 means that there is no fixed size.
    
    Returns:
    
    the fixed size in binary protocol.
  - of
```
public static MySqlType of(int id,
                           ColumnDefinition definition)
```

Enum MySqlType

Nested Class Summary

Nested classes/interfaces inherited from interface io.r2dbc.spi.Type

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

UNKNOWN

DECIMAL

TINYINT

TINYINT_UNSIGNED

SMALLINT

SMALLINT_UNSIGNED

INT

INT_UNSIGNED

FLOAT

DOUBLE

NULL

TIMESTAMP

BIGINT

BIGINT_UNSIGNED

MEDIUMINT

MEDIUMINT_UNSIGNED

DATE

TIME

DATETIME

YEAR

VARCHAR

BIT

JSON

ENUM

SET

TINYBLOB

TINYTEXT

MEDIUMBLOB

MEDIUMTEXT

LONGBLOB

LONGTEXT

BLOB

TEXT

VARBINARY

GEOMETRY

Method Detail

values

valueOf

getId

getJavaType

getName

isLob

isString

isNumeric

isFractional

isBinary

getBinarySize

of