Package 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
  • TIMESTAMP WITH LOCAL TIME ZONE as a synonym for TIMESTAMP_LTZ
  • 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 Details

    • LogicalTypeParser

      public LogicalTypeParser()

  • Method Details

    • 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.