<commit_before>extern crate rmp as msgpack;
extern crate redis;
extern crate rustc_serialize;

use std::collections::HashMap;

use redis::Commands;

mod encoder;
use encoder::*;

mod decoder;
use decoder::*;

mod save;
use save::SAVE;

pub trait Ohmer : rustc_serialize::Encodable + rustc_serialize::Decodable + Sized {
    fn id_field(&self) -> String { "id".to_string() }
    fn id(&self) -> usize;
    fn set_id(&mut self, id: usize);

    fn defaults() -> Self;
    fn get<T: Ohmer>(id: usize, r: &redis::Client) -> Result<T, DecoderError> {
        let mut obj = T::defaults();
        try!(obj.load(id, r));
        Ok(obj)
    }

    fn get_class_name(&self) -> String {
        let mut encoder = Encoder::new();
        self.encode(&mut encoder).unwrap();
        encoder.features.remove("name").unwrap()
    }

    fn load(&mut self, id: usize, r: &redis::Client) -> Result<(), DecoderError> {
        let mut properties:HashMap<String, String> = try!(try!(r.get_connection()).hgetall(format!("{}:{}", "Person", id)));
        properties.insert("id".to_string(), format!("{}", id));

        let mut decoder = Decoder::new(properties);
        *self = try!(rustc_serialize::Decodable::decode(&mut decoder));
        Ok(())
    }

    fn save(&mut self, r: &redis::Client) -> Result<(), EncoderError>{
        let mut encoder = Encoder::new();
        encoder.id_field = self.id_field();
        try!(self.encode(&mut encoder));
        let script = redis::Script::new(SAVE);
        let id = try!(script
                .arg(try!(msgpack_encode(&encoder.features)))
                .arg(try!(msgpack_encode(&encoder.attributes.iter().map(|x| &*x).collect::<Vec<_>>())))
                .arg(try!(msgpack_encode(&Vec::new() as &Vec<u8>)))
                .arg(try!(msgpack_encode(&Vec::new() as &Vec<u8>)))
                .invoke(&try!(r.get_connection())));
        self.set_id(id);
        Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use redis;
    use rustc_serialize::Encodable;

    #[derive(RustcEncodable, RustcDecodable, PartialEq, Debug)]
    struct Person {
        id: usize,
        name: String,
    }
    impl Ohmer for Person {
        fn id(&self) -> usize { self.id }
        fn set_id(&mut self, id: usize) { self.id = id; }
        fn defaults() -> Self {
            Person {
                id: 0,
                name: "".to_string(),
            }
        }
    }

    #[test]
    fn test_save() {
        let client = redis::Client::open("redis://127.0.0.1/").unwrap();
        let mut person = Person { id: 0, name: "John".to_string() };
        person.save(&client).unwrap();
    }

    #[test]
    fn test_save_load() {
        let client = redis::Client::open("redis://127.0.0.1/").unwrap();
        let mut person = Person { id: 0, name: "Jane".to_string() };
        person.save(&client).unwrap();
        let person2 = Person::get::<Person>(person.id, &client).unwrap();<commit_msg>Extract get<commit_after>extern crate rmp as msgpack;
extern crate redis;
extern crate rustc_serialize;

use std::collections::HashMap;

use redis::Commands;

mod encoder;
use encoder::*;

mod decoder;
use decoder::*;

mod save;
use save::SAVE;

pub fn get<T: Ohmer>(id: usize, r: &redis::Client) -> Result<T, DecoderError> {
    let mut obj = T::defaults();
    try!(obj.load(id, r));
    Ok(obj)
}

pub trait Ohmer : rustc_serialize::Encodable + rustc_serialize::Decodable + Sized {
    fn id_field(&self) -> String { "id".to_string() }
    fn id(&self) -> usize;
    fn set_id(&mut self, id: usize);

    fn defaults() -> Self;

    fn get_class_name(&self) -> String {
        let mut encoder = Encoder::new();
        self.encode(&mut encoder).unwrap();
        encoder.features.remove("name").unwrap()
    }

    fn load(&mut self, id: usize, r: &redis::Client) -> Result<(), DecoderError> {
        let mut properties:HashMap<String, String> = try!(try!(r.get_connection()).hgetall(format!("{}:{}", "Person", id)));
        properties.insert("id".to_string(), format!("{}", id));

        let mut decoder = Decoder::new(properties);
        *self = try!(rustc_serialize::Decodable::decode(&mut decoder));
        Ok(())
    }

    fn save(&mut self, r: &redis::Client) -> Result<(), EncoderError>{
        let mut encoder = Encoder::new();
        encoder.id_field = self.id_field();
        try!(self.encode(&mut encoder));
        let script = redis::Script::new(SAVE);
        let id = try!(script
                .arg(try!(msgpack_encode(&encoder.features)))
                .arg(try!(msgpack_encode(&encoder.attributes.iter().map(|x| &*x).collect::<Vec<_>>())))
                .arg(try!(msgpack_encode(&Vec::new() as &Vec<u8>)))
                .arg(try!(msgpack_encode(&Vec::new() as &Vec<u8>)))
                .invoke(&try!(r.get_connection())));
        self.set_id(id);
        Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use redis;
    use rustc_serialize::Encodable;

    #[derive(RustcEncodable, RustcDecodable, PartialEq, Debug)]
    struct Person {
        id: usize,
        name: String,
    }
    impl Ohmer for Person {
        fn id(&self) -> usize { self.id }
        fn set_id(&mut self, id: usize) { self.id = id; }
        fn defaults() -> Self {
            Person {
                id: 0,
                name: "".to_string(),
            }
        }
    }

    #[test]
    fn test_save() {
        let client = redis::Client::open("redis://127.0.0.1/").unwrap();
        let mut person = Person { id: 0, name: "John".to_string() };
        person.save(&client).unwrap();
    }

    #[test]
    fn test_save_load() {
        let client = redis::Client::open("redis://127.0.0.1/").unwrap();
        let mut person = Person { id: 0, name: "Jane".to_string() };
        person.save(&client).unwrap();
        let person2 = get(person.id, &client).unwrap();
{'fraction_non_alphanumeric': 0.18197366170685822, 'fraction_numerical': 0.0061570035915854285, 'mean_word_length': 2.5789473684210527, 'pattern_counts': {'":': 0, '<': 22, '<?xml version=': 0, '>': 40, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 4, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '442012', 'n_tokens_mistral': 1962, 'n_tokens_neox': 1933, 'n_words': 419}