Trait ViewDefinitionColumnTrait

Source

pub trait ViewDefinitionColumnTrait {
    // Required methods
    fn name(&self) -> Option<&str>;
    fn path(&self) -> Option<&str>;
    fn collection(&self) -> Option<bool>;
}

Expand description

Trait for abstracting ViewDefinitionColumn across FHIR versions.

This trait provides version-agnostic access to column definitions, which specify how to extract data from FHIR resources and map it to output table columns. Columns are the fundamental building blocks of ViewDefinition output structure.

§Key Properties

Name: The output column name in the result table
Path: The FHIRPath expression to extract the value
Collection: Whether this column contains array/collection values

§Examples

use helios_sof::traits::ViewDefinitionColumnTrait;

fn describe_column<T: ViewDefinitionColumnTrait>(col: &T) {
    if let Some(name) = col.name() {
        print!("Column '{}'", name);
         
        if let Some(path) = col.path() {
            print!(" from path '{}'", path);
        }
         
        if col.collection() == Some(true) {
            print!(" (collection)");
        }
         
        println!();
    }
}