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java.lang.Object org.apache.openjpa.util.ArrayStateImage
public class ArrayStateImage
Utilities for dealing with a simple state image consisting of an
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 Summary | |
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ArrayStateImage()
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Method Summary | |
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static Object[] |
clone(Object[] state)
Clone a state array. |
static BitSet |
getLoaded(Object[] state)
Get the loaded mask from a state image. |
static boolean |
isImage(Object obj)
Return true if the given version object appears to be an array state image. |
static Object[] |
newImage(int numFields)
Create a new state image for the given number of fields. |
static boolean |
sameVersion(Object[] state1,
Object[] state2)
Return whether the given images are equivalent from an optimistic locking perspective. |
static void |
setLoaded(Object[] state,
BitSet loaded)
Set the loaded mask into a state image. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ArrayStateImage()
Method Detail |
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public static Object[] newImage(int numFields)
public static boolean isImage(Object obj)
public static BitSet getLoaded(Object[] state)
public static void setLoaded(Object[] state, BitSet loaded)
public static Object[] clone(Object[] state)
public static boolean sameVersion(Object[] state1, Object[] state2)
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