org.apache.paimon.types

类 MapType

java.lang.Object

org.apache.paimon.types.DataType

org.apache.paimon.types.MapType

所有已实现的接口:

Serializable

@Public
public class MapType
extends DataType

Data type of an associative array that maps keys (including NULL) to values (including NULL). A map cannot contain duplicate keys; each key can map to at most one value. There is no restriction of key types; it is the responsibility of the user to ensure uniqueness. The map type is an extension to the SQL standard.

从以下版本开始:

0.4.0

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 String	FORMAT

构造器概要

构造器

构造器和说明
MapType(boolean isNullable, DataType keyType, DataType valueType)
MapType(DataType keyType, DataType valueType)

方法概要

限定符和类型	方法和说明
<R> R	accept(DataTypeVisitor<R> visitor)
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(boolean isNullable) Returns a deep copy of this type with possibly different nullability.
boolean	equals(Object o)
DataType	getKeyType()
DataType	getValueType()
int	hashCode()
void	serializeJson(org.apache.paimon.shade.jackson2.com.fasterxml.jackson.core.JsonGenerator generator)

从类继承的方法 org.apache.paimon.types.DataType

copy, equalsIgnoreNullable, 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

FORMAT

public static final String FORMAT

另请参阅:

常量字段值

构造器详细资料

MapType

public MapType(boolean isNullable,
               DataType keyType,
               DataType valueType)

MapType

public MapType(DataType keyType,
               DataType valueType)

方法详细资料

getKeyType

public DataType getKeyType()

getValueType

public DataType getValueType()

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

asSQLString

public String asSQLString()

从类复制的说明: DataType

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.

指定者:

asSQLString 在类中 DataType

serializeJson

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

覆盖:

serializeJson 在类中 DataType

抛出:

IOException

equals

public boolean equals(Object o)

覆盖:

equals 在类中 DataType

hashCode

public int hashCode()

覆盖:

hashCode 在类中 DataType

accept

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

指定者:

accept 在类中 DataType

collectFieldIds

public void collectFieldIds(Set<Integer> fieldIds)

覆盖:

collectFieldIds 在类中 DataType