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64 lines
1.7 KiB
64 lines
1.7 KiB
use rusqlite::{params, Connection}; |
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use serde::{Deserialize, Serialize}; |
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use std::sync::{Arc, Mutex}; |
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#[derive(Debug, Serialize, Deserialize)] |
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pub struct Segment { |
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pub id: Option<u64>, |
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pub from: u64, |
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pub to: u64, |
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} |
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// TODO: find a way to remove this unsafe |
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unsafe impl Sync for DataService {} |
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pub struct DataService { |
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connection: Arc<Mutex<Connection>>, |
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} |
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impl DataService { |
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pub fn new() -> anyhow::Result<DataService> { |
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let conn = Connection::open("./data.db")?; |
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conn.execute( |
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"CREATE TABLE IF NOT EXISTS segment ( |
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id INTEGER PRIMARY KEY, |
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start INTEGER NOT NULL, |
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end INTEGER NOT NULL |
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)", |
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[], |
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)?; |
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Ok(DataService { |
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connection: Arc::new(Mutex::new(conn)) |
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}) |
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} |
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pub fn insert_segment(&self, segment: &Segment) -> anyhow::Result<u64> { |
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// TODO: merge with other segments |
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self.connection.lock().unwrap().execute( |
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"INSERT INTO segment (start, end) VALUES (?1, ?2)", |
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params![segment.from, segment.to], |
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)?; |
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Ok(10) |
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} |
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pub fn get_segments(&self, from: u64, to: u64) -> anyhow::Result<Vec<Segment>> { |
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let conn = self.connection.lock().unwrap(); |
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let mut stmt = |
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conn.prepare("SELECT id, start, end FROM person WHERE ?1 < start AND end < ?2")?; |
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let res = stmt |
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.query_map(params![from, to], |row| { |
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Ok(Segment { |
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id: row.get(0)?, |
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from: row.get(1)?, |
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to: row.get(2)?, |
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}) |
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})? |
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.map(|e| e.unwrap()) |
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.collect(); |
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Ok(res) |
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} |
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}
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