Enum scylla_cql::frame::response::result::ResultMetadataHolder

pub enum ResultMetadataHolder {
    SelfBorrowed(SelfBorrowedMetadataContainer),
    SharedCached(Arc<ResultMetadata<'static>>),
}

Versatile container for ResultMetadata. Allows 2 types of ownership of ResultMetadata:

1. owning it in a borrowed form, self-borrowed from the RESULT:Rows frame;
2. sharing ownership of metadata cached in PreparedStatement.

Variants

SelfBorrowed(SelfBorrowedMetadataContainer)

SharedCached(Arc<ResultMetadata<'static>>)

Implementations

impl ResultMetadataHolder

pub fn inner(&self) -> &ResultMetadata<'_>

Returns reference to the stored ResultMetadata.

Note that ResultMetadataHolder cannot implement Deref, because Deref does not permit that Deref::Target’s lifetime depend on lifetime of &self.

pub fn mock_empty() -> Self

Creates an empty ResultMetadataHolder.

Trait Implementations

impl Debug for ResultMetadataHolder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.