org.apache.flink.cdc.common.types

类 CharType

java.lang.Object

org.apache.flink.cdc.common.types.DataType

org.apache.flink.cdc.common.types.CharType

所有已实现的接口:

Serializable

@PublicEvolving
public class CharType
extends DataType

Data type of a fixed-length character string.

A conversion from and to byte[] assumes UTF-8 encoding.

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_LENGTH
static int	EMPTY_LITERAL_LENGTH
static int	MAX_LENGTH
static int	MIN_LENGTH

构造器概要

构造器

构造器和说明
CharType()
CharType(boolean isNullable, int length)
CharType(int length)

方法概要

限定符和类型	方法和说明
<R> R	accept(DataTypeVisitor<R> visitor)
String	asSerializableString() Returns a string that fully serializes this instance.
String	asSummaryString() Returns a string that summarizes this type for printing to a console.
DataType	copy(boolean isNullable) Returns a deep copy of this type with possibly different nullability.
boolean	equals(Object o)
List<DataType>	getChildren()
int	getLength()
int	hashCode()
static CharType	ofEmptyLiteral() The SQL standard defines that character string literals are allowed to be zero-length strings (i.e., to contain no characters) even though it is not permitted to declare a type that is zero.

从类继承的方法 org.apache.flink.cdc.common.types.DataType

copy, getTypeRoot, is, is, isAnyOf, isAnyOf, isNullable, notNull, nullable, toString, withNullability

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

EMPTY_LITERAL_LENGTH

public static final int EMPTY_LITERAL_LENGTH

另请参阅:

常量字段值

MIN_LENGTH

public static final int MIN_LENGTH

另请参阅:

常量字段值

MAX_LENGTH

public static final int MAX_LENGTH

另请参阅:

常量字段值

DEFAULT_LENGTH

public static final int DEFAULT_LENGTH

另请参阅:

常量字段值

构造器详细资料

CharType

public CharType(boolean isNullable,
                int length)

CharType

public CharType(int length)

CharType

public CharType()

方法详细资料

ofEmptyLiteral

public static CharType ofEmptyLiteral()

The SQL standard defines that character string literals are allowed to be zero-length strings (i.e., to contain no characters) even though it is not permitted to declare a type that is zero.

This method enables this special kind of character string.

Zero-length character strings have no serializable string representation.

getLength

public int getLength()

copy

public DataType copy(boolean isNullable)

从类复制的说明: DataType

Returns a deep copy of this type with possibly different nullability.

指定者:

copy 在类中 DataType

参数:

isNullable - the intended nullability of the copied type

返回:

a deep copy

asSerializableString

public String asSerializableString()

从类复制的说明: DataType

Returns a string that fully serializes this instance. The serialized string can be used for transmitting or persisting a type.

指定者:

asSerializableString 在类中 DataType

返回:

detailed string for transmission or persistence

asSummaryString

public String asSummaryString()

从类复制的说明: DataType

Returns a string that summarizes this type for printing to a console. An implementation might shorten long names or skips very specific properties.

Use DataType.asSerializableString() for a type string that fully serializes this instance.

覆盖:

asSummaryString 在类中 DataType

返回:

summary string of this type for debugging purposes

getChildren

public List<DataType> getChildren()

指定者:

getChildren 在类中 DataType

accept

public <R> R accept(DataTypeVisitor<R> visitor)

指定者:

accept 在类中 DataType

equals

public boolean equals(Object o)

覆盖:

equals 在类中 DataType

hashCode

public int hashCode()

覆盖:

hashCode 在类中 DataType