toql_core 0.4.2

//!  Aggregated data for function calls inside the SQL Builder.

use crate::{
    query::{field_order::FieldOrder, field_path::FieldPath},
    sql_arg::SqlArg,
};
use std::collections::{HashMap, HashSet};

pub(crate) struct BuildContext {
    pub(crate) query_home_path: String,
    pub(crate) local_joined_paths: HashSet<String>,
    pub(crate) local_selected_paths: HashSet<String>,
    pub(crate) local_selected_fields: HashSet<String>,
    pub(crate) ordering: HashMap<u8, Vec<(FieldOrder, String)>>,
    pub(crate) on_aux_params: HashMap<String, SqlArg>, // generic build params
}

impl BuildContext {
    pub fn new() -> Self {
        BuildContext {
            query_home_path: "".to_string(),
            local_joined_paths: HashSet::new(),
            local_selected_paths: HashSet::new(),
            local_selected_fields: HashSet::new(),
            ordering: HashMap::new(),
            on_aux_params: HashMap::new(),
        }
    }

    pub fn update_joins_from_selections(&mut self) {
        for path in self.local_selected_paths.iter().map(|p| FieldPath::from(p)) {
            for p in path.step_down() {
                self.local_joined_paths.insert(p.to_string());
            }
        }

        for path in self
            .local_selected_fields
            .iter()
            .map(|f| FieldPath::trim_basename(f))
        {
            for p in path.step_down() {
                self.local_joined_paths.insert(p.to_string());
            }
        }
    }
}