Method append_row

nodedb-columnar/src/memtable/mod.rs:58–79

Append a row of values. Validates types and nullability.

(&mut self, values: &[Value])

    /// Append a row of values. Validates types and nullability.
    pub fn append_row(&mut self, values: &[Value]) -> Result<(), ColumnarError> {
        if values.len() != self.schema.columns.len() {
            return Err(ColumnarError::SchemaMismatch {
                expected: self.schema.columns.len(),
                got: values.len(),
            });
        }

        for (i, (col_def, value)) in self.schema.columns.iter().zip(values.iter()).enumerate() {
            if matches!(value, Value::Null) && !col_def.nullable {
                return Err(ColumnarError::NullViolation(col_def.name.clone()));
            }
            self.columns[i].push(value, &col_def.name, &col_def.column_type)?;
        }

        self.row_count += 1;
        debug_assert!(
            self.columns.iter().all(|c| c.len() == self.row_count),
            "column lengths must stay aligned with row_count"
        );
        Ok(())
    }

    /// Number of rows currently buffered.
    pub fn row_count(&self) -> usize {