Enum OpenRequest 

enum OpenRequest {
    Open {
        sender: GenericCallback<ConnectionMsg>,
        db_name: String,
        version: Option<u64>,
        processed: bool,
        pending_upgrade: Option<VersionUpgrade>,
        pending_close: HashSet<Uuid>,
        pending_versionchange: HashSet<Uuid>,
        id: Uuid,
    },
    Delete {
        sender: GenericCallback<BackendResult<u64>>,
        _origin: ImmutableOrigin,
        _db_name: String,
        processed: bool,
        id: Uuid,
    },
}

https://w3c.github.io/IndexedDB/#request-open-request Used here to implement the https://w3c.github.io/IndexedDB/#connection-queue

Variants

Open

Fields

sender: GenericCallback<ConnectionMsg>

The callback used to send a result to script.

db_name: String

The name of the database.

version: Option<u64>

Optionnaly, a requested db version. Note: when the open algorithm starts, this will be mutated and set to something as per the algo.

processed: bool

https://w3c.github.io/IndexedDB/#request-processed-flag

pending_upgrade: Option<VersionUpgrade>

Optionally, a version pending upgrade.

pending_close: HashSet<Uuid>

This request is pending on these connections to close.

pending_versionchange: HashSet<Uuid>

This request is pending on these connections to fire a versionchange event. Note: This starts as equal to pending_close, but when all events have fired, not all connections need to have closed, in which case the blocked event is fired on this request.

id: Uuid

Delete

Fields

sender: GenericCallback<BackendResult<u64>>

The callback used to send a result to script.

_origin: ImmutableOrigin

The origin of the request. TODO: storage key. Note: will be used when the full spec is implemented.

_db_name: String

The name of the database. Note: will be used when the full spec is implemented.

processed: bool

https://w3c.github.io/IndexedDB/#request-processed-flag

id: Uuid

Implementations

impl OpenRequest

fn get_id(&self) -> Uuid

fn is_open(&self) -> bool

fn is_pending(&self) -> bool

An open request remains pending until it has been processed, and while waiting on upgrade completion or other connections.

fn abort(&self) -> Option<u64>

Abort the open request, optionally returning a version to revert to.

Trait Implementations

impl MallocSizeOf for OpenRequest

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.