Struct semilattice_database::Database
source · pub struct Database { /* private fields */ }Implementations§
source§impl Database
impl Database
pub fn new(dir: &str) -> Result<Self, Error>
sourcepub fn root_dir(&self) -> &str
pub fn root_dir(&self) -> &str
Examples found in repository?
src/session.rs (line 93)
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pub fn new(main_database: &Database, name: impl Into<String>) -> Result<Self, std::io::Error> {
let mut name: String = name.into();
assert!(name != "");
if name == "" {
name = "untitiled".to_owned();
}
let session_dir = main_database.root_dir().to_string() + "/sessions/" + &name;
if !std::path::Path::new(&session_dir).exists() {
std::fs::create_dir_all(&session_dir).unwrap();
}
let session_data = Self::new_data(&session_dir)?;
let temporary_data = Self::init_temporary_data(&session_data);
Ok(Self {
name,
session_data: Some(session_data),
temporary_data,
})
}pub fn session(&self, session_name: &str) -> Result<Session, Error>
pub fn commit(&mut self, session: &mut Session) -> Result<(), Error>
sourcepub fn session_clear(&self, session: &mut Session) -> Result<(), Error>
pub fn session_clear(&self, session: &mut Session) -> Result<(), Error>
Examples found in repository?
src/lib.rs (line 97)
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pub fn commit(&mut self, session: &mut Session) -> Result<(), std::io::Error> {
if let Some(ref mut data) = session.session_data {
commit::commit(self, data)?;
self.session_clear(session)?;
}
Ok(())
}
pub fn session_clear(&self, session: &mut Session) -> Result<(), std::io::Error> {
let session_dir = self.session_dir(session.name());
session.session_data = None;
if std::path::Path::new(&session_dir).exists() {
std::fs::remove_dir_all(&session_dir)?;
}
Ok(())
}
pub fn session_start(&self, session: &mut Session) {
let session_dir = self.session_dir(session.name());
if let Ok(session_data) = Session::new_data(&session_dir) {
session.session_data = Some(session_data);
}
}
pub fn session_restart(&self, session: &mut Session) -> Result<(), std::io::Error> {
self.session_clear(session)?;
self.session_start(session);
Ok(())
}sourcepub fn session_start(&self, session: &mut Session)
pub fn session_start(&self, session: &mut Session)
pub fn session_restart(&self, session: &mut Session) -> Result<(), Error>
pub fn update(
&self,
session: &mut Session,
records: Vec<Record>
) -> Result<(), Error>
sourcepub fn collection(&self, id: i32) -> Option<&Collection>
pub fn collection(&self, id: i32) -> Option<&Collection>
Examples found in repository?
src/session.rs (line 210)
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pub fn field_bytes<'a>(
&'a self,
database: &'a Database,
collection_id: i32,
row: i64,
key: &str,
) -> &[u8] {
if let Some(tmp_col) = self.temporary_data.get(&collection_id) {
if let Some(tmp_row) = tmp_col.get(&row) {
if let Some(val) = tmp_row.fields.get(key) {
return val;
}
}
}
if row > 0 {
if let Some(col) = database.collection(collection_id) {
return col.field_bytes(row as u32, key);
}
}
b""
}More examples
src/search.rs (line 155)
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pub(super) fn result(&self, database: &Database) -> RowSet {
let mut rows = RowSet::default();
if let Some(collection) = database.collection(self.collection_id) {
if self.conditions.len() > 0 {
let (tx, rx) = std::sync::mpsc::channel();
for c in &self.conditions {
Self::exec_cond(collection, &database.relation, c, tx.clone());
}
drop(tx);
let mut fst = true;
for rs in rx {
if fst {
rows = rs;
fst = false;
} else {
rows = rows.intersection(&rs).map(|&x| x).collect()
}
}
} else {
for row in collection.data.all() {
rows.insert(row);
}
}
}
rows
}src/session/search.rs (line 152)
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pub(crate) fn result(self, database: &Database) -> BTreeSet<i64> {
let mut new_rows: BTreeSet<i64> = BTreeSet::new();
if let Some(collection) = database.collection(self.collection_id) {
let mut search = database.search(collection);
for c in &self.conditions {
search = search.search(c.clone());
}
let r = database.result(search);
if let Some(tmp) = self.session.temporary_data.get(&self.collection_id) {
for row in r {
if let Some(ent) = tmp.get(&(row as i64)) {
let mut is_match = true;
for c in &self.conditions {
is_match = Self::temporary_data_match(ent, c);
if !is_match {
break;
}
}
if is_match {
new_rows.insert(row as i64);
}
} else {
new_rows.insert(row as i64);
}
}
for (row, _) in tmp {
//セッション中に新規作成されたデータ
let row = *row;
if row < 0 {
new_rows.insert(row);
}
}
} else {
new_rows = r.into_iter().map(|x| x as i64).collect();
}
}
new_rows
}sourcepub fn collection_mut(&mut self, id: i32) -> Option<&mut Collection>
pub fn collection_mut(&mut self, id: i32) -> Option<&mut Collection>
Examples found in repository?
src/commit.rs (line 32)
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pub fn commit(
main_database: &mut Database,
session_data: &SessionData,
) -> Result<(), std::io::Error> {
let mut session_collection_row_map: HashMap<u32, CollectionRow> = HashMap::new();
let mut relation: HashMap<u32, Vec<(u32, SessionCollectionRow)>> = HashMap::new();
for row in 1..session_data.relation.rows.session_row.max_rows() {
if let (Some(session_row), Some(depend)) = (
session_data.relation.rows.session_row.value(row),
session_data.relation.rows.depend.value(row),
) {
let m = relation.entry(session_row).or_insert(Vec::new());
m.push((row, depend));
}
}
for session_row in 1..session_data.sequence.max_rows() {
if let (Some(op), Some(collection_id), Some(row)) = (
session_data.operation.value(session_row),
session_data.collection_id.value(session_row),
session_data.row.value(session_row),
) {
if let Some(collection) = main_database.collection_mut(collection_id) {
match op {
SessionOperation::New | SessionOperation::Update => {
let mut fields: Vec<KeyValue> = Vec::new();
for (key, ref field_data) in &session_data.fields {
if let Some(val) = field_data.get(session_row) {
fields.push(KeyValue::new(key, val));
}
}
let activity = if session_data.activity.value(session_row).unwrap() == 1 {
Activity::Active
} else {
Activity::Inactive
};
let term_begin =
Term::Overwrite(session_data.term_begin.value(session_row).unwrap());
let term_end =
Term::Overwrite(session_data.term_end.value(session_row).unwrap());
let row = if row == 0 {
//new
collection.create_row(&activity, &term_begin, &term_end, &fields)
} else {
assert!(row > 0);
let row = row as u32;
collection.update_row(row, &activity, &term_begin, &term_end, &fields);
row
};
let collection_row = CollectionRow::new(collection_id, row);
session_collection_row_map.insert(session_row, collection_row);
if let Some(depend_rows) = relation.get(&session_row) {
for (session_row, depend) in depend_rows {
let key =
session_data.relation.rows.key.value(*session_row).unwrap();
let key = unsafe { session_data.relation.key_names.str(key) };
if depend.row < 0 {
if let Some(depend) =
session_collection_row_map.get(&((-depend.row) as u32))
{
main_database.relation.insert(
key,
*depend,
collection_row,
)?;
}
} else {
main_database.relation.insert(
key,
CollectionRow::new(depend.collection_id, depend.row as u32),
collection_row,
)?;
};
}
}
}
SessionOperation::Delete => {
//todo!("セッション考慮の削除処理");
delete_recursive(
main_database,
&SessionCollectionRow::new(collection_id, row),
);
}
}
}
}
}
Ok(())
}
pub(super) fn delete_recursive(database: &mut Database, target: &SessionCollectionRow) {
if target.row > 0 {
let depend = CollectionRow::new(target.collection_id, target.row as u32);
let c = database.relation.index_depend().select_by_value(&depend);
for relation_row in c {
if let Some(collection_row) = database.relation.index_pend().value(relation_row) {
delete_recursive(
database,
&SessionCollectionRow::new(
collection_row.collection_id(),
collection_row.row() as i64,
),
);
if let Some(collection) = database.collection_mut(collection_row.collection_id()) {
collection.update(&Operation::Delete {
row: collection_row.row(),
});
}
}
database.relation.delete(relation_row);
}
}
}pub fn collection_id(&self, name: &str) -> Option<i32>
pub fn collection_id_or_create(&mut self, name: &str) -> Result<i32, Error>
sourcepub fn relation(&self) -> &RelationIndex
pub fn relation(&self) -> &RelationIndex
Examples found in repository?
src/update.rs (line 223)
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pub(super) fn update_recursive(
master_database: &Database,
session_data: &mut SessionData,
temporary_data: &mut TemporaryData,
session_dir: &str,
sequence_number: usize,
records: &Vec<Record>,
depend_by_pend: Option<(&str, u32)>,
) -> Result<(), std::io::Error> {
for record in records {
if let Ok(session_row) = session_data.sequence.insert(sequence_number) {
session_data.row.resize_to(session_row)?;
session_data.operation.resize_to(session_row)?;
session_data.activity.resize_to(session_row)?;
session_data.term_begin.resize_to(session_row)?;
session_data.term_end.resize_to(session_row)?;
match record {
Record::New {
collection_id,
activity,
term_begin,
term_end,
fields,
depends,
pends,
} => {
let collection_id = *collection_id;
let virtual_row = -(session_row as i64);
let term_begin = if let Term::Overwrite(term_begin) = term_begin {
*term_begin
} else {
chrono::Local::now().timestamp()
};
let term_end = if let Term::Overwrite(term_end) = term_end {
*term_end
} else {
0
};
let col = temporary_data
.entry(collection_id)
.or_insert(HashMap::new());
let mut tmp_fields = HashMap::new();
for kv in fields {
tmp_fields.insert(kv.key().to_string(), kv.value().to_vec());
}
col.insert(
virtual_row,
TemporaryDataEntity {
activity: *activity,
term_begin,
term_end,
fields: tmp_fields,
},
);
session_data
.collection_id
.update(session_row, collection_id)?;
session_data
.operation
.update(session_row, SessionOperation::New)?;
update_row(
session_dir,
session_data,
session_row,
0,
activity,
term_begin,
term_end,
fields,
);
if let Depends::Overwrite(depends) = depends {
for (key, depend) in depends {
session_data.relation.insert(key, session_row, *depend);
}
}
if let Some((key, depend_session_row)) = depend_by_pend {
incidentally_depend(session_data, session_row, key, depend_session_row);
}
for pend in pends {
update_recursive(
master_database,
session_data,
temporary_data,
session_dir,
sequence_number,
pend.records(),
Some((pend.key(), session_row)),
)?;
}
}
Record::Update {
collection_id,
row, //-の場合はセッション新規データの更新
activity,
term_begin,
term_end,
fields,
depends,
pends,
} => {
let collection_id = *collection_id;
let row = *row;
let term_begin = if let Term::Overwrite(term_begin) = term_begin {
*term_begin
} else {
chrono::Local::now().timestamp()
};
let term_end = if let Term::Overwrite(term_end) = term_end {
*term_end
} else {
0
};
let col = temporary_data
.entry(collection_id)
.or_insert(HashMap::new());
let entity = col.entry(row).or_insert(TemporaryDataEntity {
activity: *activity,
term_begin,
term_end,
fields: HashMap::new(),
});
for kv in fields {
entity.fields.insert(kv.key().into(), kv.value().into());
}
session_data
.collection_id
.update(session_row, collection_id)?;
session_data
.operation
.update(session_row, SessionOperation::Update)?;
update_row(
session_dir,
session_data,
session_row,
row,
activity,
term_begin,
term_end,
fields,
);
match depends {
Depends::Default => {
if row > 0 {
let depends =
master_database.relation().index_pend().select_by_value(
&CollectionRow::new(collection_id, row as u32),
);
for i in depends {
if let Some(depend) =
master_database.relation().depend(i as u32)
{
session_data.relation.insert(
unsafe { master_database.relation().key(i as u32) },
session_row,
SessionCollectionRow::new(
depend.collection_id(),
depend.row() as i64,
),
);
}
}
} else {
session_data
.relation
.from_session_row((-row) as u32, session_row);
}
}
Depends::Overwrite(depends) => {
for (key, depend) in depends {
session_data.relation.insert(key, session_row, *depend);
}
}
}
if let Some((key, depend_session_row)) = depend_by_pend {
incidentally_depend(session_data, session_row, key, depend_session_row);
}
for pend in pends {
update_recursive(
master_database,
session_data,
temporary_data,
session_dir,
sequence_number,
pend.records(),
Some((pend.key(), session_row)),
)?;
}
}
Record::Delete { collection_id, row } => {
session_data
.collection_id
.update(session_row, *collection_id)?;
session_data.row.update(session_row, *row as i64)?;
session_data
.operation
.update(session_row, SessionOperation::Delete)?;
}
}
}
}
Ok(())
}sourcepub fn search(&self, colletion: &Collection) -> Search
pub fn search(&self, colletion: &Collection) -> Search
Examples found in repository?
src/session/search.rs (line 153)
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pub(crate) fn result(self, database: &Database) -> BTreeSet<i64> {
let mut new_rows: BTreeSet<i64> = BTreeSet::new();
if let Some(collection) = database.collection(self.collection_id) {
let mut search = database.search(collection);
for c in &self.conditions {
search = search.search(c.clone());
}
let r = database.result(search);
if let Some(tmp) = self.session.temporary_data.get(&self.collection_id) {
for row in r {
if let Some(ent) = tmp.get(&(row as i64)) {
let mut is_match = true;
for c in &self.conditions {
is_match = Self::temporary_data_match(ent, c);
if !is_match {
break;
}
}
if is_match {
new_rows.insert(row as i64);
}
} else {
new_rows.insert(row as i64);
}
}
for (row, _) in tmp {
//セッション中に新規作成されたデータ
let row = *row;
if row < 0 {
new_rows.insert(row);
}
}
} else {
new_rows = r.into_iter().map(|x| x as i64).collect();
}
}
new_rows
}sourcepub fn result(&self, search: Search) -> RowSet
pub fn result(&self, search: Search) -> RowSet
Examples found in repository?
src/session/search.rs (line 157)
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pub(crate) fn result(self, database: &Database) -> BTreeSet<i64> {
let mut new_rows: BTreeSet<i64> = BTreeSet::new();
if let Some(collection) = database.collection(self.collection_id) {
let mut search = database.search(collection);
for c in &self.conditions {
search = search.search(c.clone());
}
let r = database.result(search);
if let Some(tmp) = self.session.temporary_data.get(&self.collection_id) {
for row in r {
if let Some(ent) = tmp.get(&(row as i64)) {
let mut is_match = true;
for c in &self.conditions {
is_match = Self::temporary_data_match(ent, c);
if !is_match {
break;
}
}
if is_match {
new_rows.insert(row as i64);
}
} else {
new_rows.insert(row as i64);
}
}
for (row, _) in tmp {
//セッション中に新規作成されたデータ
let row = *row;
if row < 0 {
new_rows.insert(row);
}
}
} else {
new_rows = r.into_iter().map(|x| x as i64).collect();
}
}
new_rows
}