org.h2.util
Class ObjectUtils

java.lang.Object
  org.h2.util.ObjectUtils

public class ObjectUtils
extends java.lang.Object

Utility class for object creation and serialization. Starting with Java 1.5, some objects are re-used.

Method Summary

static void	arrayCopy(java.lang.Object[] source, java.lang.Object[] target, int size) Copy the elements of the source array to the target array.
static java.lang.Object	deserialize(byte[] data) De-serialize the byte array to an object.
static int	hashCode(java.lang.Object o) Calculate the hash code of the given object.
static byte[]	serialize(java.lang.Object obj) Serialize the object to a byte array.

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.sql.SQLException

Serialize the object to a byte array.

Parameters:

obj - the object to serialize

Returns:

the byte array

Throws:

java.sql.SQLException

deserialize

public static java.lang.Object deserialize(byte[] data)
                                    throws java.sql.SQLException

De-serialize the byte array to an object.

Parameters:

data - the byte array

Returns:

the object

Throws:

java.sql.SQLException

arrayCopy

public static void arrayCopy(java.lang.Object[] source,
                             java.lang.Object[] target,
                             int size)

Copy the elements of the source array to the target array. System.arraycopy is used for larger arrays, but for very small arrays it is faster to use a regular loop.

Parameters:

source - the source array

target - the target array

size - the number of elements to copy

hashCode

public static int hashCode(java.lang.Object o)

Calculate the hash code of the given object. The object may be null.

Parameters:

o - the object

Returns:

the hash code, or 0 if the object is null