org.apache.flink.api.java.typeutils.runtime

Class TupleSerializerBase<T>

java.lang.Object

org.apache.flink.api.common.typeutils.TypeSerializer<T>

org.apache.flink.api.java.typeutils.runtime.TupleSerializerBase<T>

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

TupleSerializer

@Internal
public abstract class TupleSerializerBase<T>
extends TypeSerializer<T>

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	arity
protected TypeSerializer<Object>[]	fieldSerializers
protected Class<T>	tupleClass

Constructor Summary

Constructors

Constructor and Description
TupleSerializerBase(Class<T> tupleClass, TypeSerializer<?>[] fieldSerializers)

Method Summary

Modifier and Type	Method and Description
void	copy(DataInputView source, DataOutputView target) Copies exactly one record from the source input view to the target output view.
abstract T	createInstance(Object[] fields)
abstract T	createOrReuseInstance(Object[] fields, T reuse)
boolean	equals(Object obj)
int	getArity()
TypeSerializer<Object>[]	getFieldSerializers()
int	getLength() Gets the length of the data type, if it is a fix length data type.
Class<T>	getTupleClass()
int	hashCode()
boolean	isImmutableType() Gets whether the type is an immutable type.

Methods inherited from class org.apache.flink.api.common.typeutils.TypeSerializer

copy, copy, createInstance, deserialize, deserialize, duplicate, serialize, snapshotConfiguration

Methods inherited from class java.lang.Object

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

Field Detail

tupleClass

protected final Class<T> tupleClass

fieldSerializers

protected TypeSerializer<Object>[] fieldSerializers

arity

protected final int arity

Constructor Detail

TupleSerializerBase

public TupleSerializerBase(Class<T> tupleClass,
                           TypeSerializer<?>[] fieldSerializers)

Method Detail

getTupleClass

public Class<T> getTupleClass()

isImmutableType

public boolean isImmutableType()

Description copied from class: TypeSerializer

Gets whether the type is an immutable type.

Specified by:

isImmutableType in class TypeSerializer<T>

Returns:

True, if the type is immutable.

getLength

public int getLength()

Description copied from class: TypeSerializer

Gets the length of the data type, if it is a fix length data type.

Specified by:

getLength in class TypeSerializer<T>

Returns:

The length of the data type, or -1 for variable length data types.

getArity

public int getArity()

createInstance

public abstract T createInstance(Object[] fields)

createOrReuseInstance

public abstract T createOrReuseInstance(Object[] fields,
                                        T reuse)

copy

public void copy(DataInputView source,
                 DataOutputView target)
          throws IOException

Description copied from class: TypeSerializer

Copies exactly one record from the source input view to the target output view. Whether this operation works on binary data or partially de-serializes the record to determine its length (such as for records of variable length) is up to the implementer. Binary copies are typically faster. A copy of a record containing two integer numbers (8 bytes total) is most efficiently implemented as target.write(source, 8);.

Specified by:

copy in class TypeSerializer<T>

Parameters:

source - The input view from which to read the record.

target - The target output view to which to write the record.

Throws:

IOException - Thrown if any of the two views raises an exception.

hashCode

public int hashCode()

Specified by:

hashCode in class TypeSerializer<T>

equals

public boolean equals(Object obj)

Specified by:

equals in class TypeSerializer<T>

getFieldSerializers

@VisibleForTesting
public TypeSerializer<Object>[] getFieldSerializers()