Struct WindowUDFFieldArgs 

pub struct WindowUDFFieldArgs<'a> {
    input_fields: &'a [Arc<Field>],
    display_name: &'a str,
}

Metadata for defining the result field from evaluating a user-defined window function.

Fields

input_fields: &'a [Arc<Field>]

display_name: &'a str

Implementations

impl<'a> WindowUDFFieldArgs<'a>

pub fn new( input_fields: &'a [Arc<Field>], display_name: &'a str, ) -> WindowUDFFieldArgs<'a>

Create an instance of WindowUDFFieldArgs.

Arguments

• input_fields - The fields corresponding to the arguments to the user-defined window function.
• function_name - The qualified schema name of the user-defined window function expression.

pub fn input_fields(&self) -> &[Arc<Field>]

Returns the field of input expressions passed as arguments to the user-defined window function.

pub fn name(&self) -> &str

Returns the name for the field of the final result of evaluating the user-defined window function.

pub fn get_input_field(&self, index: usize) -> Option<Arc<Field>>

Returns Some(Field) of input expression at index, otherwise returns None if the index is out of bounds.