---
source: crates/edgedb_codegen/tests/codegen.rs
expression: "&content"
---
pub mod example {
    use ::edgedb_codegen::exports as e;
    /// Execute the desired query.
    #[cfg(feature = "query")]
    pub async fn query(
        client: &e::edgedb_tokio::Client,
        props: &Input,
    ) -> core::result::Result<Output, e::edgedb_errors::Error> {
        client.query_required_single(QUERY, props).await
    }
    /// Compose the query as part of a larger transaction.
    #[cfg(feature = "query")]
    pub async fn transaction(
        conn: &mut e::edgedb_tokio::Transaction,
        props: &Input,
    ) -> core::result::Result<Output, e::edgedb_errors::Error> {
        conn.query_required_single(QUERY, props).await
    }
    #[derive(Clone, Debug)]
    #[cfg_attr(feature = "builder", derive(e::typed_builder::TypedBuilder))]
    #[cfg_attr(feature = "query", derive(e::edgedb_derive::Queryable))]
    #[cfg_attr(feature = "serde", derive(e::serde::Serialize, e::serde::Deserialize))]
    pub struct Input {
        #[cfg_attr(feature = "builder", builder(setter(into)))]
        pub custom: String,
    }
    impl e::edgedb_protocol::query_arg::QueryArgs for Input {
        fn encode(
            &self,
            encoder: &mut e::edgedb_protocol::query_arg::Encoder,
        ) -> core::result::Result<(), e::edgedb_errors::Error> {
            let map = e::edgedb_protocol::named_args! {
                "custom" => self.custom.clone(),
            };
            map.encode(encoder)
        }
    }
    #[derive(Clone, Debug)]
    #[cfg_attr(feature = "query", derive(e::edgedb_derive::Queryable))]
    #[cfg_attr(feature = "serde", derive(e::serde::Serialize, e::serde::Deserialize))]
    pub struct Output {
        pub hello: String,
        pub custom: String,
    }
    /// The original query string provided to the macro. Can be reused in your codebase.
    pub const QUERY: &str = "select { hello := \"world\", custom := <str>$custom }";
}