LogicalTypeParser (Flink : Table : Common 2.0-preview1 API)

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 Summary

Constructors
Constructor Description

LogicalTypeParser()

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static LogicalType`	`parse(String typeString)`	Deprecated. You should use `parse(String, ClassLoader)` to correctly load user types
`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
```
@Deprecated
public static LogicalType parse(String typeString)
```
    Deprecated.
    You should use parse(String, ClassLoader) to correctly load user types
    
    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.