public class ArrayStateImage
extends java.lang.Object
Object[]
of field values with one extra index containing a
BitSet
of loaded fields. This simplistic state image might be used
for optimistic versioning.Constructor and Description |
---|
ArrayStateImage() |
Modifier and Type | Method and Description |
---|---|
static java.lang.Object[] |
clone(java.lang.Object[] state)
Clone a state array.
|
static java.util.BitSet |
getLoaded(java.lang.Object[] state)
Get the loaded mask from a state image.
|
static boolean |
isImage(java.lang.Object obj)
Return true if the given version object appears to be an array state
image.
|
static java.lang.Object[] |
newImage(int numFields)
Create a new state image for the given number of fields.
|
static boolean |
sameVersion(java.lang.Object[] state1,
java.lang.Object[] state2)
Return whether the given images are equivalent from an optimistic
locking perspective.
|
static void |
setLoaded(java.lang.Object[] state,
java.util.BitSet loaded)
Set the loaded mask into a state image.
|
public static java.lang.Object[] newImage(int numFields)
public static boolean isImage(java.lang.Object obj)
public static java.util.BitSet getLoaded(java.lang.Object[] state)
public static void setLoaded(java.lang.Object[] state, java.util.BitSet loaded)
public static java.lang.Object[] clone(java.lang.Object[] state)
public static boolean sameVersion(java.lang.Object[] state1, java.lang.Object[] state2)