Struct yrs::Transaction

pub struct Transaction(/* private fields */);

Transaction is one of the core types in Yrs. All operations that need to touch or modify a document’s contents (a.k.a. block store), need to be executed in scope of a transaction.

Trait Implementations

impl ReadTxn for Transaction

fn store(&self) -> &Store

fn state_vector(&self) -> StateVector

Returns state vector describing current state of the updates.

fn snapshot(&self) -> Snapshot

Returns a snapshot which describes a current state of updates and removals made within the corresponding document.

fn encode_state_from_snapshot<E>( &self, snapshot: &Snapshot, encoder: &mut E ) -> Result<(), Error>where E: Encoder,

Encodes all changes from current transaction block store up to a given snapshot. This enables to encode state of a document at some specific point in the past.

fn encode_diff<E>(&self, state_vector: &StateVector, encoder: &mut E)where E: Encoder,

Encodes the difference between remove peer state given its state_vector and the state of a current local peer

fn encode_diff_v1(&self, state_vector: &StateVector) -> Vec<u8>

fn encode_state_as_update<E>(&self, sv: &StateVector, encoder: &mut E)where E: Encoder,

fn encode_state_as_update_v1(&self, sv: &StateVector) -> Vec<u8>

fn encode_state_as_update_v2(&self, sv: &StateVector) -> Vec<u8>

fn is_alive<B>(&self, node: &B) -> boolwhere B: SharedRef,

Check if given node is alive. Returns false if node has been deleted.

fn root_refs(&self) -> RootRefs<'_>

Returns an iterator over top level (root) shared types available in current Doc.

fn subdoc_guids(&self) -> SubdocGuids<'_>

Returns a collection of globally unique identifiers of sub documents linked within the structures of this document store.

fn subdocs(&self) -> SubdocsIter<'_>

Returns a collection of sub documents linked within the structures of this document store.

fn get_text(&self, name: &str) -> Option<TextRef>

Returns a TextRef data structure stored under a given name. Text structures are used for collaborative text editing: they expose operations to append and remove chunks of text, which are free to execute concurrently by multiple peers over remote boundaries.

fn get_array(&self, name: &str) -> Option<ArrayRef>

Returns an ArrayRef data structure stored under a given name. Array structures are used for storing a sequences of elements in ordered manner, positioning given element accordingly to its index.

fn get_map(&self, name: &str) -> Option<MapRef>

Returns a MapRef data structure stored under a given name. Maps are used to store key-value pairs associated together. These values can be primitive data (similar but not limited to a JavaScript Object Notation) as well as other shared types (Yrs maps, arrays, text structures etc.), enabling to construct a complex recursive tree structures.

fn get_xml_fragment(&self, name: &str) -> Option<XmlFragmentRef>

Returns a XmlFragmentRef data structure stored under a given name. XML elements represent nodes of XML document. They can contain attributes (key-value pairs, both of string type) as well as other nested XML elements or text values, which are stored in their insertion order.

fn get_xml_element(&self, name: &str) -> Option<XmlElementRef>

Returns a XmlElementRef data structure stored under a given name. XML elements represent nodes of XML document. They can contain attributes (key-value pairs, both of string type) as well as other nested XML elements or text values, which are stored in their insertion order.

fn get_xml_text(&self, name: &str) -> Option<XmlTextRef>

Returns a XmlTextRef data structure stored under a given name. Text structures are used for collaborative text editing: they expose operations to append and remove chunks of text, which are free to execute concurrently by multiple peers over remote boundaries.