This crate contains the traits and primitives used in the Bolt v1 protocol. The Message and Value enums are of particular importance, and are the primary units of information sent and consumed by Bolt clients/servers.

The Message enum encapsulates all possible messages that can be sent between client and server. rust pub enum Message { Init(Init), Run(Run), DiscardAll, PullAll, AckFailure, Reset, Record(Record), Success(Success), Failure(Failure), Ignored, } For empty variants, it's simple to just use the variant directly. For variants with associated data, you can use Message::from with one of the provided wrapper structs. See the documentation for more details.

The Value enum encapsulates all possible values that can be stored in data from each kind of Message. Structures like List and Map allow Values to be nested with arbitrary complexity. rust pub enum Value { Boolean(bool), Integer(Integer), Float(f64), List(List), Map(Map), Null, String(std::string::String), Node(Node), Relationship(Relationship), Path(Path), UnboundRelationship(UnboundRelationship), } You should rarely ever have to construct variants directly (with the exception of Value::Null). Instead, you should typically use Value::from for the type you wish to convert. See the documentation for more details.

The Serialize and Deserialize traits provide interfaces for converting Message and Value types to and from streams of bytes, to be consumed by a compatible Bolt server.