public class VersionValue extends Object implements UnsavedValueStrategy
Modifier and Type | Field and Description |
---|---|
static VersionValue |
NEGATIVE
Assume the transient instance is newly instantiated if the version
is negative, otherwise assume it is a detached instance.
|
static VersionValue |
NULL
Assume the transient instance is newly instantiated if the version
is null, otherwise assume it is a detached instance.
|
static VersionValue |
UNDEFINED
Assume the transient instance is newly instantiated if the version
is null, otherwise defer to the identifier unsaved-value.
|
Modifier | Constructor and Description |
---|---|
protected |
VersionValue() |
|
VersionValue(Object value)
Assume the transient instance is newly instantiated if
its version is null or equal to value
|
Modifier and Type | Method and Description |
---|---|
Object |
getDefaultValue(Object currentValue)
Get a default value meant to indicate transience.
|
Boolean |
isUnsaved(Object version)
Make the transient/detached determination
|
String |
toString() |
public static final VersionValue NULL
public static final VersionValue UNDEFINED
public static final VersionValue NEGATIVE
protected VersionValue()
public VersionValue(Object value)
value
- value to compare topublic Boolean isUnsaved(Object version) throws MappingException
UnsavedValueStrategy
isUnsaved
in interface UnsavedValueStrategy
version
- The value to be testedtrue
indicates the value corresponds to unsaved data (aka, transient state); false
indicates the value does not corresponds to unsaved data (aka, detached state); null
indicates that
this strategy was not able to determine conclusively.MappingException
public Object getDefaultValue(Object currentValue)
UnsavedValueStrategy
getDefaultValue
in interface UnsavedValueStrategy
currentValue
- The current state value.Copyright © 2001-2021 Red Hat, Inc. All Rights Reserved.