Trait diesel::query_builder::BindCollector

pub trait BindCollector<'a, DB: TypeMetadata>: Sized {
    type Buffer;

    fn push_bound_value<T, U>(
        &mut self,
        bind: &'a U,
        metadata_lookup: &mut DB::MetadataLookup
    ) -> QueryResult<()>
    where
        DB: Backend + HasSqlType<T>,
        U: ToSql<T, DB> + 'a;
}

A type which manages serializing bind parameters during query construction.

The only reason you would ever need to interact with this trait is if you are adding support for a new backend to Diesel. Plugins which are extending the query builder will use AstPass::push_bind_param instead.

Required Associated Types

type Buffer

The internal buffer type used by this bind collector

Required Methods

fn push_bound_value<T, U>(
    &mut self,
    bind: &'a U,
    metadata_lookup: &mut DB::MetadataLookup
) -> QueryResult<()>where
    DB: Backend + HasSqlType<T>,
    U: ToSql<T, DB> + 'a,

Serializes the given bind value, and collects the result.

Implementors

impl<'a, DB> BindCollector<'a, DB> for RawBytesBindCollector<DB>where
    DB: Backend<BindCollector = Self> + TypeMetadata,

type Buffer = ByteWrapper<'a>