Trait toql_core::tree::tree_index::TreeIndex

pub trait TreeIndex<R, E> {
    fn index<'a, I>(
        descendents: I, 
        rows: &[R], 
        row_offset: usize, 
        index: &mut HashMap<u64, Vec<usize>>
    ) -> Result<(), E>
    where
        I: Iterator<Item = FieldPath<'a>> + Clone;
}

The trait indexes all rows for nested structs. It deserializes the entity key from the row array and saves its array index.

The trait is implemented by the Toql derive for structs that can be deserialize from rows R is a database row type , E the database error

Required Methods

fn index<'a, I>(
    descendents: I,
    rows: &[R],
    row_offset: usize,
    index: &mut HashMap<u64, Vec<usize>>
) -> Result<(), E> where
    I: Iterator<Item = FieldPath<'a>> + Clone, 

Implementors

impl<T, R, E> TreeIndex<R, E> for Join<T> where
    T: Keyed + TreeIndex<R, E>,
    E: From<ToqlError>,