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

Class 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]).

Constructor Summary

Constructors

Constructor and Description
LogicalTypeParser()

Method Summary

Modifier and Type	Method and Description
static LogicalType	parse(String typeString) Parses a type string.
static LogicalType	parse(String typeString, ClassLoader classLoader) Parses a type string.

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicalTypeParser

public LogicalTypeParser()

Method Detail

parse

public static LogicalType parse(String typeString,
                                ClassLoader classLoader)

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

Parameters:

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

classLoader - class loader for loading classes of the RAW type

Throws:

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.

Parameters:

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

Throws:

ValidationException - in case of parsing errors.