NullableMapTypeInfo (Flink : Core 2.1.1-cp2 API)

java.lang.Object
- org.apache.flink.api.common.typeinfo.TypeInformation<Map<K,V>>
- - org.apache.flink.api.java.typeutils.MapTypeInfo<K,V>
  - - org.apache.flink.api.java.typeutils.NullableMapTypeInfo<K,V>

Type Parameters:

K - The type of the keys in the map.

V - The type of the values in the map.

All Implemented Interfaces:

Serializable
```
@PublicEvolving
public class NullableMapTypeInfo<K,V>
extends MapTypeInfo<K,V>
```
A TypeInformation for the map types of the Java API, accepting null collection and null key/values.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor	Description
`NullableMapTypeInfo(Class<K> keyClass, Class<V> valueClass)`
`NullableMapTypeInfo(TypeInformation<K> keyTypeInfo, TypeInformation<V> valueTypeInfo)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`TypeSerializer<Map<K,V>>`	`createSerializer(SerializerConfig config)`	Creates a serializer for the type.
`String`	`toString()`

Methods inherited from class org.apache.flink.api.java.typeutils.MapTypeInfo
canEqual, equals, getArity, getKeyTypeInfo, getTotalFields, getTypeClass, getValueTypeInfo, hashCode, isBasicType, isKeyType, isTupleType

Methods inherited from class org.apache.flink.api.common.typeinfo.TypeInformation
getGenericParameters, isSortKeyType, of, of

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - NullableMapTypeInfo
```
public NullableMapTypeInfo(TypeInformation<K> keyTypeInfo,
                           TypeInformation<V> valueTypeInfo)
```
  - NullableMapTypeInfo
```
public NullableMapTypeInfo(Class<K> keyClass,
                           Class<V> valueClass)
```
- Method Detail
  - createSerializer
```
public TypeSerializer<Map<K,V>> createSerializer(SerializerConfig config)
```
    Description copied from class: TypeInformation
    
    Creates a serializer for the type. The serializer may use the ExecutionConfig for parameterization.
    
    Overrides:
    
    createSerializer in class MapTypeInfo<K,V>
    
    Parameters:
    
    config - The config used to parameterize the serializer.
    
    Returns:
    
    A serializer for this type.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class MapTypeInfo<K,V>