Struct FieldDescriptor 

pub struct FieldDescriptor {
    pub name: &'static str,
    pub kind: DataKind,
    pub nullable: bool,
    pub description: Option<&'static str>,
}

Engine-agnostic field definition.

This replaces arrow::datatypes::Field in the Protocol trait, allowing protocol parsers to be used with any SQL backend.

Fields

name: &'static str

Field name (snake_case, e.g., “src_port”)

kind: DataKind

Data type

nullable: bool

Whether the field can be NULL

description: Option<&'static str>

Optional description for documentation

Implementations

impl FieldDescriptor

pub const fn new(name: &'static str, kind: DataKind) -> Self

Create a new non-nullable field.

pub const fn nullable(name: &'static str, kind: DataKind) -> Self

Create a new nullable field.

pub const fn with_description(self, desc: &'static str) -> Self

Add a description to the field.

pub const fn set_nullable(self, nullable: bool) -> Self

Builder: set nullability.

impl FieldDescriptor

Helper macros for common field patterns.

pub const fn frame_number() -> Self

Frame number field (present in all protocol tables).

pub const fn timestamp() -> Self

Timestamp field.

pub const fn src_port() -> Self

Source port field.

pub const fn dst_port() -> Self

Destination port field.

pub const fn ipv4_field(name: &'static str) -> Self

IPv4 address field (stored as UInt32).

pub const fn ipv6_field(name: &'static str) -> Self

IPv6 address field (stored as 16-byte binary).

pub const fn mac_field(name: &'static str) -> Self

MAC address field (stored as 6-byte binary).

Trait Implementations

impl Clone for FieldDescriptor

fn clone(&self) -> FieldDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldDescriptor

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

Formats the value using the given formatter.

impl PartialEq for FieldDescriptor

fn eq(&self, other: &FieldDescriptor) -> 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 StructuralPartialEq for FieldDescriptor