Struct SchemaOnlyFunction 

pub struct SchemaOnlyFunction { /* private fields */ }

A function that carries a schema but has no native implementation.

This is used to represent functions declared in inline catalogs that the server sends as part of capabilities negotiation. The client knows the function exists (and its declared return type) but cannot execute it.

Implementations

impl SchemaOnlyFunction

pub fn new(name: String, return_type: ReturnType) -> Self

Create a new schema-only function from a runtime String name.

The name is leaked via Box::leak to produce the &'static str required by FunctionImplementation::name. This leak is bounded: inline catalogs are registered exactly once at startup (via MessageProcessor::register_inline_catalog) and never unloaded for the lifetime of the processor, so the leaked memory is proportional to the (small, fixed) set of inline functions a client advertises — it does not grow unboundedly.

Trait Implementations

impl FunctionImplementation for SchemaOnlyFunction

fn name(&self) -> &'static str

The function name as it appears in the catalog.

fn return_type(&self) -> ReturnType

The return type of this function.

fn execute( &self, _args: &HashMap<String, Value>, _context: &DataContext<'_>, ) -> Result<Value, A2uiError>

Execute the function with resolved arguments.