Struct SimulationDatabase 

pub struct SimulationDatabase {
    pub rows: Vec<DbRow>,
    pub name: String,
}

A simple in-memory relational table for simulation data.

Supports insert, column-based equality filtering, and projection.

Fields

rows: Vec<DbRow>

All rows stored in the table.

name: String

Table name for metadata/export purposes.

Implementations

impl SimulationDatabase

pub fn new(name: impl Into<String>) -> Self

Create a new, named, empty table.

pub fn insert(&mut self, row: DbRow)

Insert a row into the table.

pub fn row_count(&self) -> usize

Count the number of rows.

pub fn query_eq(&self, col: &str, val: &DbValue) -> Vec<&DbRow>

Query rows where column col equals val.

pub fn query_range(&self, col: &str, lo: f64, hi: f64) -> Vec<&DbRow>

Query rows where column col (numeric) is in [lo, hi].

pub fn project(&self, cols: &[&str]) -> Vec<HashMap<String, DbValue>>

Return a projected view: for each row, extract the listed columns.

pub fn delete_eq(&mut self, col: &str, val: &DbValue) -> usize

Delete all rows where column col equals val.

Returns the number of rows deleted.

pub fn clear(&mut self)

Clear all rows.

pub fn column_mean(&self, col: &str) -> Option<f64>

Compute the mean of a numeric column across all rows.

Returns None if no numeric values are found.

Trait Implementations

impl Debug for SimulationDatabase

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

Formats the value using the given formatter.

impl Default for SimulationDatabase

fn default() -> SimulationDatabase

Returns the “default value” for a type.