Struct CollectionDescriptor 

pub struct CollectionDescriptor {
    pub collection_id: u32,
    pub primary_root: u64,
    pub type_version: u32,
    pub next_id: u64,
    pub indexes: Vec<IndexDescriptor>,
}

On-disk description of a collection.

Encoded with postcard as the value of a catalog B-tree row. The exact shape is documented in docs/format.md § Catalog.

Fields

collection_id: u32

Catalog-assigned numeric id for this collection.

primary_root: u64

Page-id of the collection’s primary B-tree root.

type_version: u32

Current Document::VERSION for the collection’s type.

next_id: u64

Next-id watermark — the next Id the allocator will hand out for this collection.

indexes: Vec<IndexDescriptor>

Secondary indexes. Empty in M5; populated in M7.

Implementations

impl CollectionDescriptor

pub const fn new( collection_id: u32, primary_root: u64, type_version: u32, ) -> Self

Construct a descriptor for a freshly-registered collection. primary_root is the page-id of the collection’s empty primary B-tree (allocated by the caller before Catalog::insert); collection_id is the value the catalog will assign.

Trait Implementations

impl Clone for CollectionDescriptor

fn clone(&self) -> CollectionDescriptor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CollectionDescriptor

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CollectionDescriptor

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CollectionDescriptor

fn eq(&self, other: &CollectionDescriptor) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CollectionDescriptor

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for CollectionDescriptor

impl StructuralPartialEq for CollectionDescriptor