org.apache.flink.table.types.logical.utils

类 LogicalTypeParser

java.lang.Object

org.apache.flink.table.types.logical.utils.LogicalTypeParser

@PublicEvolving
public final class LogicalTypeParser
extends Object

Parser for creating instances of LogicalType from a serialized string created with LogicalType.asSerializableString().

In addition to the serializable string representations, this parser also supports common shortcuts for certain types. This includes:

• STRING as a synonym for VARCHAR(INT_MAX)
• BYTES as a synonym for VARBINARY(INT_MAX)
• NUMERIC and DEC as synonyms for DECIMAL
• INTEGER as a synonym for INT
• DOUBLE PRECISION as a synonym for DOUBLE
• TIME WITHOUT TIME ZONE as a synonym for TIME
• TIMESTAMP WITHOUT TIME ZONE as a synonym for TIMESTAMP
• type ARRAY as a synonym for ARRAY<type>
• type MULTISET as a synonym for MULTISET<type>
• ROW(...) as a synonym for ROW<...>
• type NULL as a synonym for type

Furthermore, it returns UnresolvedUserDefinedType for unknown types (partially or fully qualified such as [catalog].[database].[type]).

构造器概要

构造器

构造器和说明
LogicalTypeParser()

方法概要

限定符和类型	方法和说明
static LogicalType	parse(String typeString) Parses a type string.
static LogicalType	parse(String typeString, ClassLoader classLoader) Parses a type string.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

LogicalTypeParser

public LogicalTypeParser()

方法详细资料

parse

public static LogicalType parse(String typeString,
                                ClassLoader classLoader)

Parses a type string. All types will be fully resolved except for UnresolvedUserDefinedTypes.

参数:

typeString - a string like "ROW(field1 INT, field2 BOOLEAN)"

classLoader - class loader for loading classes of the RAW type

抛出:

ValidationException - in case of parsing errors.

parse

public static LogicalType parse(String typeString)

Parses a type string. All types will be fully resolved except for UnresolvedUserDefinedTypes.

参数:

typeString - a string like "ROW(field1 INT, field2 BOOLEAN)"

抛出:

ValidationException - in case of parsing errors.