Struct diesel::query_builder::bind_collector::RawBytesBindCollector

#[non_exhaustive]
pub struct RawBytesBindCollector<DB: Backend + TypeMetadata> {
    pub metadata: Vec<DB::TypeMetadata>,
    pub binds: Vec<Option<Vec<u8>>>,
}

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

A bind collector used by backends which transmit bind parameters as an opaque blob of bytes.

For most backends, this is the concrete implementation of BindCollector that should be used.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

metadata: Vec<DB::TypeMetadata>

The metadata associated with each bind parameter.

This vec is guaranteed to be the same length as binds.

binds: Vec<Option<Vec<u8>>>

The serialized bytes for each bind parameter.

This vec is guaranteed to be the same length as metadata.

Implementations

impl<DB: Backend + TypeMetadata> RawBytesBindCollector<DB>

pub fn new() -> Self

Construct an empty RawBytesBindCollector

Trait Implementations

impl<'a, DB> BindCollector<'a, DB> for RawBytesBindCollector<DB>

where for<'b> DB: Backend<BindCollector<'b> = Self> + TypeMetadata,

type Buffer = ByteWrapper<'a>

The internal buffer type used by this bind collector

fn push_bound_value<T, U>( &mut self, bind: &U, metadata_lookup: &mut DB::MetadataLookup ) -> QueryResult<()>

where DB: HasSqlType<T>, U: ToSql<T, DB> + ?Sized,

Serializes the given bind value, and collects the result.

fn push_null_value(&mut self, metadata: DB::TypeMetadata) -> QueryResult<()>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Push a null value with the given type information onto the bind collector

impl<DB: Debug + Backend + TypeMetadata> Debug for RawBytesBindCollector<DB>

where DB::TypeMetadata: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<DB: Backend + TypeMetadata> Default for RawBytesBindCollector<DB>

fn default() -> Self

Returns the “default value” for a type.

impl<DB> MoveableBindCollector<DB> for RawBytesBindCollector<DB>

where for<'a> DB: Backend<BindCollector<'a> = Self> + TypeMetadata + 'static, <DB as TypeMetadata>::TypeMetadata: Clone + Send,

type BindData = RawBytesBindCollector<DB>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

The movable bind data of this bind collector

fn moveable(&self) -> Self::BindData

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Builds a movable version of the bind collector

fn append_bind_data(&mut self, from: &Self::BindData)

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Refill the bind collector with its bind data