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

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
boolean	canEqual(Object obj) Returns true if the given object can be equaled with this object.
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()
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

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 final 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>

canEqual

public boolean canEqual(Object obj)

Description copied from class: TypeSerializer

Returns true if the given object can be equaled with this object. If not, it returns false.

Specified by:

canEqual in class TypeSerializer<T>

Parameters:

obj - Object which wants to take part in the equality relation

Returns:

true if obj can be equaled with this, otherwise false