Package alluxio.job.util

Class SerializationUtils

  • @ThreadSafe
public final class SerializationUtils
extends java.lang.Object
    Serialization related utility methods.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method 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