alluxio.job.util

Class SerializationUtils

java.lang.Object

alluxio.job.util.SerializationUtils

@ThreadSafe
public final class SerializationUtils
extends java.lang.Object

Serialization related utility methods.

Method Summary

Modifier and Type	Method and Description
static java.io.Serializable	deserialize(byte[] bytes) Deserializes a byte array into an object.
static java.io.Serializable	deserialize(byte[] bytes, java.lang.String errorMessage) Wrapper around #deserialize(Object) which throws a runtime exception with the given message on failure.
static <S,T extends java.io.Serializable> java.util.Map<S,java.util.ArrayList<T>>	makeValuesSerializable(java.util.Map<S,java.util.Collection<T>> map)
static byte[]	serialize(java.lang.Object obj) Serializes an object into a byte array.
static byte[]	serialize(java.lang.Object obj, java.lang.String errorMessage) Wrapper around serialize(Object) which throws a runtime exception with the given message on failure.

Methods inherited from class java.lang.Object

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

Method Detail

serialize

public static byte[] serialize(java.lang.Object obj)
                        throws java.io.IOException

Serializes an object into a byte array. When the object is null, returns null.

Parameters:

obj - the object to serialize

Returns:

the serialized bytes

Throws:

java.io.IOException - if the serialization fails

serialize

public static byte[] serialize(java.lang.Object obj,
                               java.lang.String errorMessage)

Wrapper around serialize(Object) which throws a runtime exception with the given message on failure.

Parameters:

obj - the object the serialize

errorMessage - the message to show if serialization fails

Returns:

the serialized bytes

deserialize

public static java.io.Serializable deserialize(byte[] bytes)
                                        throws java.io.IOException,
                                               java.lang.ClassNotFoundException

Deserializes a byte array into an object. When the bytes are null, returns null.

Parameters:

bytes - the byte array to deserialize

Returns:

the deserialized object

Throws:

java.io.IOException - if the deserialization fails

java.lang.ClassNotFoundException - if no class found to deserialize into

deserialize

public static java.io.Serializable deserialize(byte[] bytes,
                                               java.lang.String errorMessage)

Wrapper around #deserialize(Object) which throws a runtime exception with the given message on failure.

Parameters:

bytes - the byte array the deserialize

errorMessage - the message to show if deserialization fails

Returns:

the deserialized object

makeValuesSerializable

public static <S,T extends java.io.Serializable> java.util.Map<S,java.util.ArrayList<T>> makeValuesSerializable(java.util.Map<S,java.util.Collection<T>> map)

Type Parameters:

S - the key type for the Map

T - the type of the values in the collections which are the values for the Map

Parameters:

map - a map to make serializable

Returns:

a copy of the map with serializable values