Package org.apache.flink.table.dataview

Class NullSerializer

java.lang.Object

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

org.apache.flink.api.common.typeutils.base.TypeSerializerSingleton<Object>

org.apache.flink.table.dataview.NullSerializer

All Implemented Interfaces:

Serializable

@Internal
public class NullSerializer
extends org.apache.flink.api.common.typeutils.base.TypeSerializerSingleton<Object>

A serializer for null.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	NullSerializer.NullSerializerSnapshot	Serializer configuration snapshot for compatibility and format evolution.

Field Summary

Fields

Modifier and Type	Field	Description
static final NullSerializer	INSTANCE

Method Summary

Modifier and Type	Method	Description
Object	copy(Object from)
Object	copy(Object from, Object reuse)
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
Object	createInstance()
Object	deserialize(Object reuse, org.apache.flink.core.memory.DataInputView source)
Object	deserialize(org.apache.flink.core.memory.DataInputView source)
int	getLength()
boolean	isImmutableType()
void	serialize(Object record, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<Object>	snapshotConfiguration()

Methods inherited from class org.apache.flink.api.common.typeutils.base.TypeSerializerSingleton

duplicate, equals, hashCode

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final NullSerializer INSTANCE

Method Details

isImmutableType

public boolean isImmutableType()

Specified by:

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

createInstance

public Object createInstance()

Specified by:

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

copy

public Object copy(Object from)

Specified by:

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

copy

public Object copy(Object from,
 Object reuse)

Specified by:

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

getLength

public int getLength()

Specified by:

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

serialize

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

Specified by:

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

Throws:

IOException

deserialize

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

Specified by:

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

Throws:

IOException

deserialize

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

Specified by:

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

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<Object>

Throws:

IOException

snapshotConfiguration

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

Specified by:

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