org.apache.paimon.types

类 DataType

java.lang.Object

org.apache.paimon.types.DataType

所有已实现的接口:

Serializable

直接已知子类:

ArrayType, BigIntType, BinaryType, BooleanType, CharType, DateType, DecimalType, DoubleType, FloatType, IntType, LocalZonedTimestampType, MapType, MultisetType, RowType, SmallIntType, TimestampType, TimeType, TinyIntType, VarBinaryType, VarCharType

@Public
public abstract class DataType
extends Object
implements Serializable

Describes the data type in the paimon ecosystem.

从以下版本开始:

0.4.0

另请参阅:

DataTypes, 序列化表格

构造器概要

构造器

构造器和说明
DataType(boolean isNullable, DataTypeRoot typeRoot)

方法概要

限定符和类型	方法和说明
abstract <R> R	accept(DataTypeVisitor<R> visitor)
abstract String	asSQLString() Returns a string that summarizes this type as SQL standard string for printing to a console.
void	collectFieldIds(Set<Integer> fieldIds)
DataType	copy() Returns a deep copy of this type.
abstract DataType	copy(boolean isNullable) Returns a deep copy of this type with possibly different nullability.
boolean	equals(Object o)
boolean	equalsIgnoreNullable(DataType o) Compare two data types without nullable.
DataTypeRoot	getTypeRoot() Returns the root of this type.
int	hashCode()
boolean	is(DataTypeFamily family) Returns whether the family type of the type equals to the family or not.
boolean	is(DataTypeRoot typeRoot) Returns whether the root of the type equals to the typeRoot or not.
boolean	isAnyOf(DataTypeFamily... typeFamilies) Returns whether the root of the type is part of at least one family of the typeFamily or not.
boolean	isAnyOf(DataTypeRoot... typeRoots) Returns whether the root of the type equals to at least on of the typeRoots or not.
boolean	isNullable() Returns whether a value of this type can be null.
DataType	notNull()
DataType	nullable()
void	serializeJson(org.apache.paimon.shade.jackson2.com.fasterxml.jackson.core.JsonGenerator generator)
String	toString()
protected String	withNullability(String format, Object... params)

从类继承的方法 java.lang.Object

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

构造器详细资料

DataType

public DataType(boolean isNullable,
                DataTypeRoot typeRoot)

方法详细资料

isNullable

public boolean isNullable()

Returns whether a value of this type can be null.

getTypeRoot

public DataTypeRoot getTypeRoot()

Returns the root of this type. It is an essential description without additional parameters.

is

public boolean is(DataTypeRoot typeRoot)

Returns whether the root of the type equals to the typeRoot or not.

参数:

typeRoot - The root type to check against for equality

isAnyOf

public boolean isAnyOf(DataTypeRoot... typeRoots)

Returns whether the root of the type equals to at least on of the typeRoots or not.

参数:

typeRoots - The root types to check against for equality

isAnyOf

public boolean isAnyOf(DataTypeFamily... typeFamilies)

Returns whether the root of the type is part of at least one family of the typeFamily or not.

参数:

typeFamilies - The families to check against for equality

is

public boolean is(DataTypeFamily family)

Returns whether the family type of the type equals to the family or not.

参数:

family - The family type to check against for equality

copy

public abstract DataType copy(boolean isNullable)

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

参数:

isNullable - the intended nullability of the copied type

返回:

a deep copy

copy

public final DataType copy()

Returns a deep copy of this type. It requires an implementation of copy(boolean).

返回:

a deep copy

equalsIgnoreNullable

public boolean equalsIgnoreNullable(@Nonnull
                                    DataType o)

Compare two data types without nullable.

参数:

o - the target data type

equals

public boolean equals(Object o)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

asSQLString

public abstract String asSQLString()

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

serializeJson

public void serializeJson(org.apache.paimon.shade.jackson2.com.fasterxml.jackson.core.JsonGenerator generator)
                   throws IOException

抛出:

IOException

withNullability

protected String withNullability(String format,
                                 Object... params)

toString

public String toString()

覆盖:

toString 在类中 Object

accept

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

collectFieldIds

public void collectFieldIds(Set<Integer> fieldIds)

notNull

public DataType notNull()

nullable

public DataType nullable()