Trait apache_age::AgeClient

source · [−]
pub trait AgeClient {
    fn connect_age<T>(params: &str, tls_mode: T) -> Result<Client, Error>
   where
        T: MakeTlsConnect<Socket> + 'static + Send,
        T::TlsConnect: Send,
        T::Stream: Send,
        <T::TlsConnect as TlsConnect<Socket>>::Future: Send;
    fn constraint(
        &mut self,
        graph: &str,
        label: &str,
        name: &str,
        constraint_text: &str
    ) -> Result<u64, Error>;
    fn unique_index(
        &mut self,
        graph: &str,
        label: &str,
        name: &str,
        field: &str
    ) -> Result<u64, Error>;
    fn required_constraint(
        &mut self,
        graph: &str,
        label: &str,
        name: &str,
        field: &str
    ) -> Result<u64, Error>;
    fn create_graph(&mut self, name: &str) -> Result<u64, Error>;
    fn drop_graph(&mut self, name: &str) -> Result<u64, Error>;
    fn graph_exists(&mut self, name: &str) -> Result<bool, Error>;
    fn execute_cypher<T>(
        &mut self,
        graph: &str,
        cypher: &str,
        agtype: Option<AgType<T>>
    ) -> Result<u64, Error>
   where
        T: Serialize,
        T: Debug,
        T: Sync;
    fn query_cypher<T>(
        &mut self,
        graph: &str,
        cypher: &str,
        agtype: Option<AgType<T>>
    ) -> Result<Vec<Row>, Error>
   where
        T: Serialize,
        T: Debug,
        T: Sync;
}
Expand description

Handles connecting, configuring and querying graph dbs within postgres instance

Required Methods

Create a new constraint for the certain label within graph

IMPORTANT: At least one object has to be created with a certain label

Create unique index for the certain field for the label within graph

IMPORTANT: At least one object has to be created with a certain label

Exexute cypher query, without any rows to be retured

Query cypher for a single agtype (in a format of json)

IMPORTANT: You need to return result of the query as a map

Example:

MATCH (n: Person) WHERE n.name = 'Alfred' RETURN {name: n.name, surname: n.surname}

Implementors