public final class VersionedRecordExtension extends Object implements DynamoDbEnhancedClientExtension
This extension is loaded by default when you instantiate a
DynamoDbEnhancedClient so unless you are using a custom extension
there is no need to specify it.
To utilize versioned record locking, first create an attribute in your model that will be used to store the record
version number. This attribute must be an 'integer' type numeric (long or integer), and you need to tag it as the
version attribute. If you are using the
you should use the
annotation, otherwise if you are using the
then you should use the
VersionedRecordExtension.AttributeTags.versionAttribute() static attribute tag.
Then, whenever a record is written the write operation will only succeed if the version number of the record has not been modified since it was last read by the application. Every time a new version of the record is successfully written to the database, the record version number will be automatically incremented.
|Modifier and Type||Class and Description|
|Modifier and Type||Method and Description|
This hook is called just before an operation is going to write data to the database.
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public static VersionedRecordExtension.Builder builder()
public WriteModification beforeWrite(DynamoDbExtensionContext.BeforeWrite context)