Trait sdb::Storable [−]
pub trait Storable: Debug { type PageReferences: Iterator; fn page_references(&self) -> Self::PageReferences; fn compare<T>(&self, _txn: &T, _b: &Self) -> Ordering
where
T: LoadPage, { ... } }
Expand description
Types that can be stored on disk. This trait may be used in
conjunction with Sized
in order to determine the on-disk size,
or with UnsizedStorable
when special arrangements are needed.
Associated Types
type PageReferences: Iterator
type PageReferences: Iterator
An iterator over the offsets to pages contained in this
value. Only values from this crate can generate non-empty
iterators, but combined values (like tuples) must chain the
iterators returned by method page_offsets
.
Required methods
fn page_references(&self) -> Self::PageReferences
fn page_references(&self) -> Self::PageReferences
If this value is an offset to another page at offset offset
,
return Some(offset)
. Return None
else.
Provided methods
Implementations on Foreign Types
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <i8 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <() as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <u16 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <i64 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <u8 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <u32 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <i16 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <i32 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <u64 as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <[u8; 16] as Storable>::PageReferences
type PageReferences = Empty<u64>
pub fn page_references(&self) -> <[u8] as Storable>::PageReferences