Get and unpack extra metadata for this
int getExtraMetadata ( Uint32& version, void** data, Uint32* length ) const
Parameters. This method takes the following three parameters:
version: By convention, as used in NDB Cluster code,
1means that the extra metadata contains a
BLOB) as in NDB 7.6 and earlier;
2indicates that it is serialized dictionary information as in NDB 8.0. The values are actually arbritrary, and application-specific.
data: The stored data retrieved as metadata.
length: The length of the stored data (metadata).
0 on success, any other value on
failure. A nonzer4o value should be interpreted as an error code
for the type of error.
This method was added in NDB 8.0.13.