Struct SimpleExtensions 

pub struct SimpleExtensions {
    urns: BTreeMap<u32, String>,
    extensions: BTreeMap<(u32, ExtensionKind), (u32, CompoundName)>,
}

ExtensionLookup contains mappings from anchors to extension URNs, functions, types, and type variations.

Fields

urns: BTreeMap<u32, String>

extensions: BTreeMap<(u32, ExtensionKind), (u32, CompoundName)>

Implementations

impl SimpleExtensions

pub fn new() -> Self

pub fn from_extensions<'a>( urns: impl IntoIterator<Item = &'a SimpleExtensionUrn>, extensions: impl IntoIterator<Item = &'a SimpleExtensionDeclaration>, ) -> (Self, Vec<InsertError>)

pub fn add_extension_urn( &mut self, urn: String, anchor: u32, ) -> Result<(), InsertError>

pub fn add_extension( &mut self, kind: ExtensionKind, urn: u32, anchor: u32, name: String, ) -> Result<(), InsertError>

pub fn is_empty(&self) -> bool

pub fn to_extension_urns(&self) -> Vec<SimpleExtensionUrn>

Convert the extension URNs to protobuf format for Plan construction.

pub fn to_extension_declarations(&self) -> Vec<SimpleExtensionDeclaration>

Convert the extensions to protobuf format for Plan construction.

pub fn write<W: Write>(&self, w: &mut W, indent: &str) -> Result

Write the extensions to the given writer, with the given indent.

The header will be included if there are any extensions.

pub fn to_string(&self, indent: &str) -> String

impl SimpleExtensions

pub fn find_urn(&self, anchor: u32) -> Result<&str, MissingReference>

pub fn find_by_anchor( &self, kind: ExtensionKind, anchor: u32, ) -> Result<(u32, &CompoundName), MissingReference>

pub fn find_by_name( &self, kind: ExtensionKind, name: &str, ) -> Result<u32, MissingReference>

pub fn is_name_unique( &self, kind: ExtensionKind, anchor: u32, name: &str, ) -> Result<bool, MissingReference>

Returns true when no other extension of the same kind has the same full compound name (i.e. the anchor display can be suppressed).

Returns Err when anchor is not registered for kind.

pub fn lookup_function( &self, anchor: u32, ) -> Result<ResolvedFunction<'_>, MissingReference>

Look up a function anchor and return its full resolution metadata. The caller already has anchor from the Substrait plan and needs the name, URN, and uniqueness flags.

pub fn resolve_function( &self, name: &str, anchor: Option<u32>, ) -> Result<ResolvedFunction<'_>, MissingReference>

Resolve a CompoundName written in the plan to a ResolvedFunction.

• anchor = Some(a) — the anchor identifies the function; the name is validated for consistency using CompoundName::matches.
• anchor = None — the name must be unambiguous on its own:
  • Simple (no :): base-name search; fails if more than one function shares that base name.
  • Full (has :): exact match only.

fn is_base_name_unique( &self, kind: ExtensionKind, anchor: u32, ) -> Result<bool, MissingReference>

fn find_by_base_name( &self, kind: ExtensionKind, base: &str, ) -> Result<u32, MissingReference>

Trait Implementations

impl Clone for SimpleExtensions

fn clone(&self) -> SimpleExtensions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SimpleExtensions

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

Formats the value using the given formatter.

impl Default for SimpleExtensions

fn default() -> SimpleExtensions

Returns the “default value” for a type.

impl PartialEq for SimpleExtensions

fn eq(&self, other: &SimpleExtensions) -> 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 SimpleExtensions