1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69

use idx_binary::IdxBinary;
use versatile_data::IdxSized;

use super::SessionCollectionRow;

pub struct SessionDepend {
    key: String,
    collection_row: SessionCollectionRow,
}
impl SessionDepend{
    pub fn new(key:&str,collection_row:SessionCollectionRow)->Self{
        Self { key:key.to_owned(), collection_row }
    }
    pub fn collection_id(&self)->i32{
        self.collection_row.collection_id()
    }
    pub fn row(&self)->i64{
        self.collection_row.row()
    }
    pub fn key(&self)->&str{
        &self.key
    }
}

pub struct SessionRelationRows {
    pub(crate) key: IdxSized<u32>,
    pub(crate) session_row: IdxSized<u32>,
    pub(crate) depend: IdxSized<SessionCollectionRow>,
}
pub struct SessionRelation {
    pub(crate) key_names: IdxBinary,
    pub(crate) rows: SessionRelationRows,
}
impl SessionRelation {
    pub fn new(session_dir: &str) -> Self {
        let relation_dir = session_dir.to_string() + "/relation/";
        if !std::path::Path::new(&relation_dir).exists() {
            std::fs::create_dir_all(&relation_dir).unwrap();
        }
        Self {
            key_names: IdxBinary::new(&(relation_dir.to_string() + "/key_name")).unwrap(),
            rows: SessionRelationRows {
                key: IdxSized::new(&(relation_dir.to_string() + "/key.i")).unwrap(),
                session_row: IdxSized::new(&(relation_dir.to_string() + "/session_row.i")).unwrap(),
                depend: IdxSized::new(&(relation_dir.to_string() + "/depend.i")).unwrap(),
            },
        }
    }
    pub fn insert(&mut self, relation_key: &str, session_row: u32, depend: SessionCollectionRow) {
        if let Ok(key_id) = self.key_names.entry(relation_key.as_bytes()) {
            self.rows.key.insert(key_id).unwrap();
            self.rows.session_row.insert(session_row).unwrap();

            self.rows.depend.insert(depend).unwrap();
        }
    }
    pub fn from_session_row(&mut self, session_row: u32, new_session_row: u32) {
        for session_relation_row in self.rows.session_row.select_by_value(&session_row).iter() {
            if let (Some(key), Some(depend)) = (
                self.rows.key.value(*session_relation_row),
                self.rows.depend.value(*session_relation_row),
            ) {
                self.rows.key.insert(key).unwrap();
                self.rows.session_row.insert(new_session_row).unwrap();
                self.rows.depend.insert(depend).unwrap();
            }
        }
    }
}