T
- The type of the class represented by this type information.@Public public class WritableTypeInfo<T extends org.apache.hadoop.io.Writable> extends TypeInformation<T> implements AtomicType<T>
Writable
interface. The Writable
interface defines the serialization and deserialization routines for the data type.Constructor and Description |
---|
WritableTypeInfo(Class<T> typeClass) |
Modifier and Type | Method and Description |
---|---|
boolean |
canEqual(Object obj)
Returns true if the given object can be equaled with this object.
|
TypeComparator<T> |
createComparator(boolean sortOrderAscending,
ExecutionConfig executionConfig)
Creates a comparator for this type.
|
TypeSerializer<T> |
createSerializer(ExecutionConfig executionConfig)
Creates a serializer for the type.
|
boolean |
equals(Object obj) |
int |
getArity()
Gets the arity of this type - the number of fields without nesting.
|
int |
getTotalFields()
Gets the number of logical fields in this type.
|
Class<T> |
getTypeClass()
Gets the class of the type represented by this type information.
|
int |
hashCode() |
boolean |
isBasicType()
Checks if this type information represents a basic type.
|
boolean |
isKeyType()
Checks whether this type can be used as a key.
|
boolean |
isTupleType()
Checks if this type information represents a Tuple type.
|
String |
toString() |
getGenericParameters, isSortKeyType, of, of
@PublicEvolving public WritableTypeInfo(Class<T> typeClass)
@PublicEvolving public TypeComparator<T> createComparator(boolean sortOrderAscending, ExecutionConfig executionConfig)
AtomicType
createComparator
in interface AtomicType<T extends org.apache.hadoop.io.Writable>
sortOrderAscending
- True, if the comparator should define the order to be ascending,
false, if the comparator should define the order to be descending.executionConfig
- The config from which the comparator will be parametrized. Parametrization
includes for example registration of class tags for frameworks like Kryo.@PublicEvolving public boolean isBasicType()
TypeInformation
BasicTypeInfo
and are primitives, their boxing types,
Strings, Date, Void, ...isBasicType
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
@PublicEvolving public boolean isTupleType()
TypeInformation
isTupleType
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
@PublicEvolving public int getArity()
TypeInformation
getArity
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
@PublicEvolving public int getTotalFields()
TypeInformation
The total number of fields must be at least 1.
getTotalFields
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
@PublicEvolving public Class<T> getTypeClass()
TypeInformation
getTypeClass
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
@PublicEvolving public boolean isKeyType()
TypeInformation
isKeyType
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
@PublicEvolving public TypeSerializer<T> createSerializer(ExecutionConfig executionConfig)
TypeInformation
createSerializer
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
executionConfig
- The config used to parameterize the serializer.public String toString()
toString
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
public int hashCode()
hashCode
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
public boolean equals(Object obj)
equals
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
public boolean canEqual(Object obj)
TypeInformation
canEqual
in class TypeInformation<T extends org.apache.hadoop.io.Writable>
obj
- Object which wants to take part in the equality relationCopyright © 2014–2019 The Apache Software Foundation. All rights reserved.