Struct SchemaInspector 

pub struct SchemaInspector { /* private fields */ }

Schema inspector widget for displaying dataset schema

Shows field names, Arrow types, and nullable status.

Example

let adapter = DatasetAdapter::from_dataset(&dataset)?;
let inspector = SchemaInspector::new(&adapter);

for line in inspector.render_lines() {
    println!("{}", line);
}

Implementations

impl SchemaInspector

pub fn new(adapter: &DatasetAdapter) -> Self

Create a new schema inspector from a dataset adapter

pub fn with_width(adapter: &DatasetAdapter, width: u16) -> Self

Create a new schema inspector with specific width

pub fn field_count(&self) -> usize

Get the number of fields

pub fn is_empty(&self) -> bool

Check if schema is empty

pub fn display_width(&self) -> u16

Get the display width

pub fn render_lines(&self) -> Vec<String>

Render the schema as lines

pub fn field(&self, index: usize) -> Option<(&str, &str, bool)>

Get field info by index

pub fn field_names(&self) -> Vec<&str>

Get all field names

pub fn type_names(&self) -> Vec<&str>

Get all type names

Trait Implementations

impl Clone for SchemaInspector

fn clone(&self) -> SchemaInspector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaInspector

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

Formats the value using the given formatter.