org.apache.flink.table.runtime.typeutils

Class RowDataSerializer

java.lang.Object

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

org.apache.flink.table.runtime.typeutils.PagedTypeSerializer<T>

org.apache.flink.table.runtime.typeutils.AbstractRowDataSerializer<org.apache.flink.table.data.RowData>

org.apache.flink.table.runtime.typeutils.RowDataSerializer

All Implemented Interfaces:

Serializable

@Internal
public class RowDataSerializer
extends AbstractRowDataSerializer<org.apache.flink.table.data.RowData>

Serializer for RowData.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RowDataSerializer.RowDataSerializerSnapshot TypeSerializerSnapshot for BinaryRowDataSerializer.

Constructor Summary

Constructors

Constructor and Description
RowDataSerializer(org.apache.flink.table.types.logical.LogicalType... types)
RowDataSerializer(org.apache.flink.table.types.logical.LogicalType[] types, org.apache.flink.api.common.typeutils.TypeSerializer<?>[] fieldSerializers)
RowDataSerializer(org.apache.flink.table.types.logical.RowType rowType)

Method Summary

Modifier and Type	Method and Description
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.table.data.RowData	copy(org.apache.flink.table.data.RowData from)
org.apache.flink.table.data.RowData	copy(org.apache.flink.table.data.RowData from, org.apache.flink.table.data.RowData reuse)
org.apache.flink.table.data.RowData	createInstance()
org.apache.flink.table.data.RowData	deserialize(org.apache.flink.core.memory.DataInputView source)
org.apache.flink.table.data.RowData	deserialize(org.apache.flink.table.data.RowData reuse, org.apache.flink.core.memory.DataInputView source)
org.apache.flink.table.data.RowData	deserializeFromPages(org.apache.flink.runtime.memory.AbstractPagedInputView source) De-serializes a record from the given source paged input view.
org.apache.flink.table.data.RowData	deserializeFromPages(org.apache.flink.table.data.RowData reuse, org.apache.flink.runtime.memory.AbstractPagedInputView source) Reuse version of PagedTypeSerializer.deserializeFromPages(AbstractPagedInputView).
org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>	duplicate()
boolean	equals(Object obj)
int	getArity() Get the number of fields.
int	getLength()
int	hashCode()
boolean	isImmutableType()
org.apache.flink.table.data.RowData	mapFromPages(org.apache.flink.table.data.RowData reuse, org.apache.flink.runtime.memory.AbstractPagedInputView source) Map a reused record from the given source paged input view.
void	serialize(org.apache.flink.table.data.RowData row, org.apache.flink.core.memory.DataOutputView target)
int	serializeToPages(org.apache.flink.table.data.RowData row, org.apache.flink.runtime.memory.AbstractPagedOutputView target) Serializes the given record to the given target paged output view.
void	skipRecordFromPages(org.apache.flink.runtime.memory.AbstractPagedInputView source) Skip over bytes of one record from the paged input view, discarding the skipped bytes.
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<org.apache.flink.table.data.RowData>	snapshotConfiguration()
org.apache.flink.table.data.binary.BinaryRowData	toBinaryRow(org.apache.flink.table.data.RowData row) Convert RowData into BinaryRowData.

Methods inherited from class java.lang.Object

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

Constructor Detail

RowDataSerializer

public RowDataSerializer(org.apache.flink.table.types.logical.RowType rowType)

RowDataSerializer

public RowDataSerializer(org.apache.flink.table.types.logical.LogicalType... types)

RowDataSerializer

public RowDataSerializer(org.apache.flink.table.types.logical.LogicalType[] types,
                         org.apache.flink.api.common.typeutils.TypeSerializer<?>[] fieldSerializers)

Method Detail

duplicate

public org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData> duplicate()

Specified by:

duplicate in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

createInstance

public org.apache.flink.table.data.RowData createInstance()

Specified by:

createInstance in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

serialize

public void serialize(org.apache.flink.table.data.RowData row,
                      org.apache.flink.core.memory.DataOutputView target)
               throws IOException

Specified by:

serialize in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

Throws:

IOException

deserialize

public org.apache.flink.table.data.RowData deserialize(org.apache.flink.core.memory.DataInputView source)
                                                throws IOException

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

Throws:

IOException

deserialize

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

Specified by:

deserialize in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

Throws:

IOException

copy

public org.apache.flink.table.data.RowData copy(org.apache.flink.table.data.RowData from)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

copy

public org.apache.flink.table.data.RowData copy(org.apache.flink.table.data.RowData from,
                                                org.apache.flink.table.data.RowData reuse)

Specified by:

copy in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

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<org.apache.flink.table.data.RowData>

Throws:

IOException

getArity

public int getArity()

Description copied from class: AbstractRowDataSerializer

Get the number of fields.

Specified by:

getArity in class AbstractRowDataSerializer<org.apache.flink.table.data.RowData>

toBinaryRow

public org.apache.flink.table.data.binary.BinaryRowData toBinaryRow(org.apache.flink.table.data.RowData row)

Convert RowData into BinaryRowData. TODO modify it to code gen.

Specified by:

toBinaryRow in class AbstractRowDataSerializer<org.apache.flink.table.data.RowData>

serializeToPages

public int serializeToPages(org.apache.flink.table.data.RowData row,
                            org.apache.flink.runtime.memory.AbstractPagedOutputView target)
                     throws IOException

Description copied from class: PagedTypeSerializer

Serializes the given record to the given target paged output view. Some implementations may skip some bytes if current page does not have enough space left, .e.g BinaryRowData.

Specified by:

serializeToPages in class PagedTypeSerializer<org.apache.flink.table.data.RowData>

Parameters:

row - The record to serialize.

target - The output view to write the serialized data to.

Returns:

Returns the skipped number of bytes.

Throws:

IOException - Thrown, if the serialization encountered an I/O related error. Typically raised by the output view, which may have an underlying I/O channel to which it delegates.

deserializeFromPages

public org.apache.flink.table.data.RowData deserializeFromPages(org.apache.flink.runtime.memory.AbstractPagedInputView source)
                                                         throws IOException

Description copied from class: PagedTypeSerializer

De-serializes a record from the given source paged input view. For consistency with serialize format, some implementations may need to skip some bytes of source before de-serializing, .e.g BinaryRowData. Typically, the content read from source should be copied out when de-serializing, and we are not expecting the underlying data from source is reused. If you have such requirement, see #mapFromPages(T, AbstractPagedInputView).

Specified by:

deserializeFromPages in class PagedTypeSerializer<org.apache.flink.table.data.RowData>

Parameters:

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

Returns:

The de-serialized element.

Throws:

IOException - Thrown, if the de-serialization encountered an I/O related error. Typically raised by the input view, which may have an underlying I/O channel from which it reads.

deserializeFromPages

public org.apache.flink.table.data.RowData deserializeFromPages(org.apache.flink.table.data.RowData reuse,
                                                                org.apache.flink.runtime.memory.AbstractPagedInputView source)
                                                         throws IOException

Description copied from class: PagedTypeSerializer

Reuse version of PagedTypeSerializer.deserializeFromPages(AbstractPagedInputView).

Specified by:

deserializeFromPages in class PagedTypeSerializer<org.apache.flink.table.data.RowData>

Throws:

IOException

mapFromPages

public org.apache.flink.table.data.RowData mapFromPages(org.apache.flink.table.data.RowData reuse,
                                                        org.apache.flink.runtime.memory.AbstractPagedInputView source)
                                                 throws IOException

Description copied from class: PagedTypeSerializer

Map a reused record from the given source paged input view. This method provides a possibility to achieve zero copy when de-serializing. You can either choose copy or not copy the content read from source, but we encourage to make it zero copy.

If you choose the zero copy way, you have to deal with the lifecycle of the pages properly.

Specified by:

mapFromPages in class PagedTypeSerializer<org.apache.flink.table.data.RowData>

Parameters:

reuse - the reused record to be mapped

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

Returns:

The mapped record.

Throws:

IOException - Thrown, if the de-serialization encountered an I/O related error. Typically raised by the input view, which may have an underlying I/O channel from which it reads.

skipRecordFromPages

public void skipRecordFromPages(org.apache.flink.runtime.memory.AbstractPagedInputView source)
                         throws IOException

Description copied from class: PagedTypeSerializer

Skip over bytes of one record from the paged input view, discarding the skipped bytes.

Specified by:

skipRecordFromPages in class PagedTypeSerializer<org.apache.flink.table.data.RowData>

Throws:

IOException

equals

public boolean equals(Object obj)

Specified by:

equals in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

hashCode

public int hashCode()

Specified by:

hashCode in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

isImmutableType

public boolean isImmutableType()

Specified by:

isImmutableType in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

getLength

public int getLength()

Specified by:

getLength in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>

snapshotConfiguration

public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<org.apache.flink.table.data.RowData> snapshotConfiguration()

Specified by:

snapshotConfiguration in class org.apache.flink.api.common.typeutils.TypeSerializer<org.apache.flink.table.data.RowData>