risinglight 0.2.0

An OLAP database system for educational purpose
Documentation 
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// Copyright 2022 RisingLight Project Authors. Licensed under Apache-2.0.

use std::fmt;

use serde::Serialize;

use super::*;

/// A dummy plan.
#[derive(Debug, Clone, Serialize)]
pub struct Dummy {
    schema: Vec<ColumnDesc>,
}

impl Dummy {
    pub fn new(schema: Vec<ColumnDesc>) -> Self {
        Self { schema }
    }
}

impl PlanTreeNodeLeaf for Dummy {}
impl_plan_tree_node_for_leaf!(Dummy);
impl PlanNode for Dummy {
    fn schema(&self) -> Vec<ColumnDesc> {
        self.schema.clone()
    }
}
impl fmt::Display for Dummy {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        writeln!(f, "Dummy:")
    }
}