Trait pgrx::datum::WithTypeIds

pub trait WithTypeIds {
    const ITEM_ID: Lazy<TypeId>;
    const OPTION_ID: Lazy<Option<TypeId>>;
    const VEC_ID: Lazy<Option<TypeId>>;
    const VEC_OPTION_ID: Lazy<Option<TypeId>>;
    const OPTION_VEC_ID: Lazy<Option<TypeId>>;
    const OPTION_VEC_OPTION_ID: Lazy<Option<TypeId>>;
    const ARRAY_ID: Lazy<Option<TypeId>>;
    const OPTION_ARRAY_ID: Lazy<Option<TypeId>>;
    const VARIADICARRAY_ID: Lazy<Option<TypeId>>;
    const OPTION_VARIADICARRAY_ID: Lazy<Option<TypeId>>;
    const VARLENA_ID: Lazy<Option<TypeId>>;
    const OPTION_VARLENA_ID: Lazy<Option<TypeId>>;

    // Provided methods
    fn register_with_refs(map: &mut HashSet<RustSqlMapping>, single_sql: String)
       where Self: 'static { ... }
    fn register_sized_with_refs(
        _map: &mut HashSet<RustSqlMapping>,
        _single_sql: String
    )
       where Self: 'static { ... }
    fn register_sized(_map: &mut HashSet<RustSqlMapping>, _single_sql: String)
       where Self: 'static { ... }
    fn register_varlena_with_refs(
        _map: &mut HashSet<RustSqlMapping>,
        _single_sql: String
    )
       where Self: 'static { ... }
    fn register_varlena(_map: &mut HashSet<RustSqlMapping>, _single_sql: String)
       where Self: 'static { ... }
    fn register_array_with_refs(
        _map: &mut HashSet<RustSqlMapping>,
        _single_sql: String
    )
       where Self: 'static { ... }
    fn register_array(_map: &mut HashSet<RustSqlMapping>, _single_sql: String)
       where Self: 'static { ... }
    fn register(set: &mut HashSet<RustSqlMapping>, single_sql: String)
       where Self: 'static { ... }
}

A type which can have it’s core::any::TypeIds registered for Rust to SQL mapping.

An example use of this trait:

use pgrx::prelude::*;
use serde::{Serialize, Deserialize};

#[derive(Debug, Clone, Copy, Serialize, Deserialize, PostgresType)]
struct Treat<'a> { best_part: &'a str, };

let mut mappings = Default::default();
let treat_string = stringify!(Treat).to_string();
<Treat<'static> as pgrx::datum::WithTypeIds>::register_with_refs(&mut mappings, treat_string.clone());

assert!(mappings.iter().any(|x| x.id == core::any::TypeId::of::<Treat<'static>>()));

This trait uses the fact that inherent implementations are a higher priority than trait implementations.

Required Associated Constants

const ITEM_ID: Lazy<TypeId>

const OPTION_ID: Lazy<Option<TypeId>>

const VEC_ID: Lazy<Option<TypeId>>

const VEC_OPTION_ID: Lazy<Option<TypeId>>

const OPTION_VEC_ID: Lazy<Option<TypeId>>

const OPTION_VEC_OPTION_ID: Lazy<Option<TypeId>>

const ARRAY_ID: Lazy<Option<TypeId>>

const OPTION_ARRAY_ID: Lazy<Option<TypeId>>

const VARIADICARRAY_ID: Lazy<Option<TypeId>>

const OPTION_VARIADICARRAY_ID: Lazy<Option<TypeId>>

const VARLENA_ID: Lazy<Option<TypeId>>

const OPTION_VARLENA_ID: Lazy<Option<TypeId>>

Provided Methods

fn register_with_refs(map: &mut HashSet<RustSqlMapping>, single_sql: String)

where Self: 'static,

fn register_sized_with_refs( _map: &mut HashSet<RustSqlMapping>, _single_sql: String )

where Self: 'static,

fn register_sized(_map: &mut HashSet<RustSqlMapping>, _single_sql: String)

where Self: 'static,

fn register_varlena_with_refs( _map: &mut HashSet<RustSqlMapping>, _single_sql: String )

where Self: 'static,

fn register_varlena(_map: &mut HashSet<RustSqlMapping>, _single_sql: String)

where Self: 'static,

fn register_array_with_refs( _map: &mut HashSet<RustSqlMapping>, _single_sql: String )

where Self: 'static,

fn register_array(_map: &mut HashSet<RustSqlMapping>, _single_sql: String)

where Self: 'static,

fn register(set: &mut HashSet<RustSqlMapping>, single_sql: String)

where Self: 'static,

Object Safety

This trait is not object safe.

Implementors

impl<T: 'static + ?Sized> WithTypeIds for T

const ITEM_ID: Lazy<TypeId> = _

const OPTION_ID: Lazy<Option<TypeId>> = _

const VEC_ID: Lazy<Option<TypeId>> = _

const VEC_OPTION_ID: Lazy<Option<TypeId>> = _

const OPTION_VEC_ID: Lazy<Option<TypeId>> = _

const OPTION_VEC_OPTION_ID: Lazy<Option<TypeId>> = _

const ARRAY_ID: Lazy<Option<TypeId>> = _

const OPTION_ARRAY_ID: Lazy<Option<TypeId>> = _

const VARIADICARRAY_ID: Lazy<Option<TypeId>> = _

const OPTION_VARIADICARRAY_ID: Lazy<Option<TypeId>> = _

const VARLENA_ID: Lazy<Option<TypeId>> = _

const OPTION_VARLENA_ID: Lazy<Option<TypeId>> = _