org.apache.flink.util

Class CompressedSerializedValue<T>

java.lang.Object

org.apache.flink.util.SerializedValue<T>

org.apache.flink.util.CompressedSerializedValue<T>

All Implemented Interfaces:

Serializable

@Internal
public class CompressedSerializedValue<T>
extends SerializedValue<T>

An extension of SerializedValue that compresses the value after the serialization.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
T	deserializeValue(ClassLoader loader) Decompress and deserialize the data to get the original object.
static <T> CompressedSerializedValue<T>	fromBytes(byte[] compressedSerializedData) Construct a compressed serialized value with a serialized byte array.
static <T> CompressedSerializedValue<T>	fromObject(T object) Constructs a compressed serialized value for the given object.
int	getSize() Returns the size of the compressed serialized data.
String	toString()

Methods inherited from class org.apache.flink.util.SerializedValue

equals, getByteArray, hashCode

Methods inherited from class java.lang.Object

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

Method Detail

deserializeValue

public T deserializeValue(ClassLoader loader)
                   throws IOException,
                          ClassNotFoundException

Decompress and deserialize the data to get the original object.

Overrides:

deserializeValue in class SerializedValue<T>

Parameters:

loader - the classloader to deserialize

Returns:

the deserialized object

Throws:

IOException - exception during decompression and deserialization

ClassNotFoundException - if class is not found in the classloader

getSize

public int getSize()

Returns the size of the compressed serialized data.

fromObject

public static <T> CompressedSerializedValue<T> fromObject(T object)
                                                   throws IOException

Constructs a compressed serialized value for the given object.

Parameters:

object - the object to serialize and compress

Throws:

NullPointerException - if object is null

IOException - exception during serialization and compression

fromBytes

public static <T> CompressedSerializedValue<T> fromBytes(byte[] compressedSerializedData)

Construct a compressed serialized value with a serialized byte array.

The byte array must be the result of serialization and compression with InstantiationUtil.serializeObjectAndCompress(java.lang.Object).

Type Parameters:

T - type of the object

Parameters:

compressedSerializedData - the compressed serialized byte array

Returns:

CompressedSerializedValue that can be deserialized as the object

toString

public String toString()

Overrides:

toString in class SerializedValue<T>