Struct EntityBlock 

pub struct EntityBlock {
    pub entity: String,
    pub ids: Vec<[u8; 16]>,
    pub columns: Vec<ColumnData>,
}

A block of entities from a query result.

Uses column-oriented storage for efficient serialization and processing.

Fields

entity: String

Entity type name.

ids: Vec<[u8; 16]>

Entity IDs (parallel with column values).

columns: Vec<ColumnData>

Column data (each column has same length as ids).

Implementations

impl EntityBlock

pub fn new(entity: impl Into<String>) -> Self

Create a new empty entity block.

pub fn with_data( entity: impl Into<String>, ids: Vec<[u8; 16]>, columns: Vec<ColumnData>, ) -> Self

Create an entity block with data.

pub fn len(&self) -> usize

Get the number of rows in this block.

pub fn is_empty(&self) -> bool

Check if this block is empty.

pub fn column(&self, name: &str) -> Option<&ColumnData>

Get a column by name.

pub fn get(&self, row: usize, column: &str) -> Option<&Value>

Get the value at a specific row and column.

pub fn rows(&self) -> impl Iterator<Item = (&[u8; 16], Vec<(&str, &Value)>)>

Iterate over rows as (id, field_values) pairs.

Trait Implementations

impl Archive for EntityBlock

where String: Archive, Vec<[u8; 16]>: Archive, Vec<ColumnData>: Archive,

const COPY_OPTIMIZATION: CopyOptimization<Self>

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

type Archived = ArchivedEntityBlock

The archived representation of this type.

type Resolver = EntityBlockResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve(&self, resolver: Self::Resolver, out: Place<Self::Archived>)

Creates the archived version of this value at the given position and writes it to the given output.

impl Clone for EntityBlock

fn clone(&self) -> EntityBlock

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EntityBlock

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EntityBlock

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<__D: Fallible + ?Sized> Deserialize<EntityBlock, __D> for Archived<EntityBlock>

where String: Archive, <String as Archive>::Archived: Deserialize<String, __D>, Vec<[u8; 16]>: Archive, <Vec<[u8; 16]> as Archive>::Archived: Deserialize<Vec<[u8; 16]>, __D>, Vec<ColumnData>: Archive, <Vec<ColumnData> as Archive>::Archived: Deserialize<Vec<ColumnData>, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<EntityBlock, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl PartialEq for EntityBlock

fn eq(&self, other: &EntityBlock) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<__S: Fallible + ?Sized> Serialize<__S> for EntityBlock

where String: Serialize<__S>, Vec<[u8; 16]>: Serialize<__S>, Vec<ColumnData>: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl Serialize for EntityBlock

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EntityBlock