org.apache.flink.table.runtime.typeutils

Class ExternalSerializer<I,E>

java.lang.Object

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

org.apache.flink.table.runtime.typeutils.ExternalSerializer<I,E>

Type Parameters:

I - internal data structure

E - external data structure

All Implemented Interfaces:

Serializable

@Internal
public final class ExternalSerializer<I,E>
extends org.apache.flink.api.common.typeutils.TypeSerializer<E>

A serializer that can serialize and deserialize all data structures defined by a DataType.

This class combines DataStructureConverters and InternalSerializers into one entity. The serialized binary format is always an internal binary format.

Serializing null in the top-level is not supported.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExternalSerializer.ExternalSerializerSnapshot<I,E> TypeSerializerSnapshot for ExternalSerializer.

Method Summary

Modifier and Type	Method and Description
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
E	copy(E from)
E	copy(E from, E reuse)
E	createInstance()
E	deserialize(org.apache.flink.core.memory.DataInputView source)
E	deserialize(E reuse, org.apache.flink.core.memory.DataInputView source)
org.apache.flink.api.common.typeutils.TypeSerializer<E>	duplicate()
boolean	equals(Object o)
org.apache.flink.table.types.DataType	getDataType()
int	getLength()
int	hashCode()
boolean	isImmutableType()
boolean	isInternalInput()
static <I,E> ExternalSerializer<I,E>	of(org.apache.flink.table.types.DataType dataType) Creates an instance of a ExternalSerializer defined by the given DataType.
static <I,E> ExternalSerializer<I,E>	of(org.apache.flink.table.types.DataType dataType, boolean isInternalInput) Creates an instance of a ExternalSerializer defined by the given DataType.
void	serialize(E record, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<E>	snapshotConfiguration()

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <I,E> ExternalSerializer<I,E> of(org.apache.flink.table.types.DataType dataType)

Creates an instance of a ExternalSerializer defined by the given DataType.

of

public static <I,E> ExternalSerializer<I,E> of(org.apache.flink.table.types.DataType dataType,
                                               boolean isInternalInput)

Creates an instance of a ExternalSerializer defined by the given DataType.

getDataType

public org.apache.flink.table.types.DataType getDataType()

isInternalInput

public boolean isInternalInput()

isImmutableType

public boolean isImmutableType()

Specified by:

isImmutableType in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

duplicate

public org.apache.flink.api.common.typeutils.TypeSerializer<E> duplicate()

Specified by:

duplicate in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

createInstance

public E createInstance()

Specified by:

createInstance in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

copy

public E copy(E from)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

copy

public E copy(E from,
              E reuse)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

getLength

public int getLength()

Specified by:

getLength in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

serialize

public void serialize(E record,
                      org.apache.flink.core.memory.DataOutputView target)
               throws IOException

Specified by:

serialize in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

Throws:

IOException

deserialize

public E deserialize(org.apache.flink.core.memory.DataInputView source)
              throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

Throws:

IOException

deserialize

public E deserialize(E reuse,
                     org.apache.flink.core.memory.DataInputView source)
              throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

Throws:

IOException

copy

public void copy(org.apache.flink.core.memory.DataInputView source,
                 org.apache.flink.core.memory.DataOutputView target)
          throws IOException

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

Throws:

IOException

equals

public boolean equals(Object o)

Specified by:

equals in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

hashCode

public int hashCode()

Specified by:

hashCode in class org.apache.flink.api.common.typeutils.TypeSerializer<E>

snapshotConfiguration

public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<E> snapshotConfiguration()

Specified by:

snapshotConfiguration in class org.apache.flink.api.common.typeutils.TypeSerializer<E>