1use std::sync::Arc;
2use std::time::{Instant, SystemTime};
3
4use teaql_core::{
5 AggregationCacheOptions, DeleteCommand, Entity, Expr, InsertCommand, Record, RecoverCommand,
6 RelationAggregate, SelectQuery, SmartList, UpdateCommand, Value,
7};
8use teaql_sql::{CompiledQuery, SqlDialect};
9
10use crate::{
11 CheckObjectStatus, EntityEvent, RepositoryBehavior, RepositoryError, RuntimeError,
12 SqlLogOperation, clear_record_status, mark_record_status,
13};
14
15use super::{
16 AggregationCacheBackend, ContextRepository, InMemoryAggregationCache, QueryExecutor,
17 ResolvedRepository, UserContextMetadata, helpers::*,
18};
19
20impl<'a, D, E> ResolvedRepository<'a, D, E>
21where
22 D: SqlDialect,
23 E: QueryExecutor,
24{
25 pub(super) fn query_behavior(&self, entity: &str) -> Option<Arc<dyn RepositoryBehavior>> {
26 self.repository.metadata.context.repository_behavior(entity)
27 }
28
29 pub(super) fn behavior(&self) -> Option<Arc<dyn RepositoryBehavior>> {
30 self.repository
31 .metadata
32 .context
33 .repository_behavior(&self.entity)
34 }
35
36 pub fn entity(&self) -> &str {
37 &self.entity
38 }
39
40 pub fn select(&self) -> SelectQuery {
41 SelectQuery::new(self.entity.clone())
42 }
43
44 pub fn insert_command(&self) -> InsertCommand {
45 InsertCommand::new(self.entity.clone())
46 }
47
48 fn enforce_insert_policy(&self, command: &mut InsertCommand) -> Result<(), RuntimeError> {
49 if let Some(policy) = self.repository.metadata.context.request_policy.as_ref() {
50 policy.enforce_insert(self.repository.metadata.context, command)?;
51 }
52 Ok(())
53 }
54
55 fn enforce_update_policy(&self, command: &mut UpdateCommand) -> Result<(), RuntimeError> {
56 if let Some(policy) = self.repository.metadata.context.request_policy.as_ref() {
57 policy.enforce_update(self.repository.metadata.context, command)?;
58 }
59 Ok(())
60 }
61
62 fn enforce_delete_policy(&self, command: &mut DeleteCommand) -> Result<(), RuntimeError> {
63 if let Some(policy) = self.repository.metadata.context.request_policy.as_ref() {
64 policy.enforce_delete(self.repository.metadata.context, command)?;
65 }
66 Ok(())
67 }
68
69 fn enforce_recover_policy(&self, command: &mut RecoverCommand) -> Result<(), RuntimeError> {
70 if let Some(policy) = self.repository.metadata.context.request_policy.as_ref() {
71 policy.enforce_recover(self.repository.metadata.context, command)?;
72 }
73 Ok(())
74 }
75
76 fn prepare_select_query(&self, query: &SelectQuery) -> Result<SelectQuery, RuntimeError> {
77 let mut query = query.clone();
78 if let Some(behavior) = self.query_behavior(&query.entity) {
79 behavior.before_select(self.repository.metadata.context, &mut query)?;
80 }
81 if let Some(policy) = self.repository.metadata.context.request_policy.as_ref() {
82 policy.enforce_select(self.repository.metadata.context, &mut query)?;
83 }
84 Ok(query)
85 }
86
87 pub fn prepare_insert_command(
88 &self,
89 command: &InsertCommand,
90 ) -> Result<InsertCommand, RuntimeError> {
91 let mut command = command.clone();
92 if let Some(behavior) = self.behavior() {
93 behavior.before_insert(self.repository.metadata.context, &mut command)?;
94 }
95 self.enforce_insert_policy(&mut command)?;
96
97 let entity = self
98 .repository
99 .metadata
100 .context
101 .require_entity(&command.entity)?;
102 if let Some(id_property) = entity.id_property() {
103 let needs_id = !command.values.contains_key(&id_property.name)
104 || is_unassigned_id(command.values.get(&id_property.name));
105 if needs_id {
106 let id = self.repository.metadata.context.next_id(&command.entity)?;
107 command
108 .values
109 .insert(id_property.name.clone(), Value::U64(id));
110 }
111 }
112 ensure_initial_version(&mut command.values, entity);
113 mark_record_status(&mut command.values, CheckObjectStatus::Create);
114 let check_result = self
115 .repository
116 .metadata
117 .context
118 .check_and_fix_record(&command.entity, &mut command.values);
119 clear_record_status(&mut command.values);
120 check_result?;
121
122 Ok(command)
123 }
124
125 pub fn update_command(&self, id: impl Into<Value>) -> UpdateCommand {
126 UpdateCommand::new(self.entity.clone(), id)
127 }
128
129 pub fn prepare_update_command(
130 &self,
131 command: &UpdateCommand,
132 ) -> Result<UpdateCommand, RuntimeError> {
133 let mut command = command.clone();
134 if let Some(behavior) = self.behavior() {
135 behavior.before_update(self.repository.metadata.context, &mut command)?;
136 }
137 self.enforce_update_policy(&mut command)?;
138 mark_record_status(&mut command.values, CheckObjectStatus::Update);
139 let check_result = self
140 .repository
141 .metadata
142 .context
143 .check_and_fix_record(&command.entity, &mut command.values);
144 clear_record_status(&mut command.values);
145 check_result?;
146 Ok(command)
147 }
148
149 pub fn delete_command(&self, id: impl Into<Value>) -> DeleteCommand {
150 DeleteCommand::new(self.entity.clone(), id)
151 }
152
153 pub fn recover_command(&self, id: impl Into<Value>, expected_version: i64) -> RecoverCommand {
154 RecoverCommand::new(self.entity.clone(), id, expected_version)
155 }
156
157 pub fn compile(&self, query: &SelectQuery) -> Result<CompiledQuery, RuntimeError> {
158 let query = self.prepare_select_query(query)?;
159 self.repository.compile(&query)
160 }
161
162 pub fn fetch_all(&self, query: &SelectQuery) -> Result<Vec<Record>, RepositoryError<E::Error>> {
163 let query = self
164 .prepare_select_query(query)
165 .map_err(RepositoryError::Runtime)?;
166 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
167 let mut rows = self.fetch_prepared_query(&query)?;
168 self.enhance_object_group_bys(&mut rows, &query.object_group_bys)?;
169 self.enhance_child_queries(&mut rows, &query.child_enhancements)?;
170 Ok(rows)
171 }
172
173 fn fetch_prepared_query(
174 &self,
175 query: &SelectQuery,
176 ) -> Result<Vec<Record>, RepositoryError<E::Error>> {
177 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
178 let mut compiled = self
179 .repository
180 .compile(query)
181 .map_err(RepositoryError::Runtime)?;
182 compiled.comment = self.repository.resolve_final_comment(query.comment.clone());
183 if let Some(options) = query.aggregation_cache.filter(|options| options.enabled) {
184 if let Some(cache) = self
185 .repository
186 .metadata
187 .context
188 .get_resource::<Arc<dyn AggregationCacheBackend>>()
189 {
190 return self.fetch_prepared_query_with_cache(
191 query,
192 &compiled,
193 options,
194 cache.as_ref(),
195 );
196 }
197 if let Some(cache) = self
198 .repository
199 .metadata
200 .context
201 .get_resource::<InMemoryAggregationCache>()
202 {
203 return self.fetch_prepared_query_with_cache(query, &compiled, options, cache);
204 }
205 }
206 let started_at = SystemTime::now();
207 let started = Instant::now();
208 let rows = self
209 .repository
210 .executor
211 .fetch_all(&compiled)
212 .map_err(RepositoryError::Executor)?;
213 self.repository.log_sql_result(
214 SqlLogOperation::Select,
215 &compiled,
216 started_at,
217 started,
218 Some(rows.len()),
219 Some(query.entity.clone()),
220 None,
221 query.comment.clone(),
222 );
223 Ok(rows)
224 }
225
226 fn fetch_prepared_query_with_cache(
227 &self,
228 query: &SelectQuery,
229 compiled: &CompiledQuery,
230 options: AggregationCacheOptions,
231 cache: &dyn AggregationCacheBackend,
232 ) -> Result<Vec<Record>, RepositoryError<E::Error>> {
233 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
234 let key = aggregation_cache_key(
235 cache.namespace(),
236 &aggregation_cache_namespace(&query.entity),
237 compiled,
238 );
239 if let Some(rows) = cache.get(&key, options.cache_expired_millis) {
240 return Ok(rows);
241 }
242 let started_at = SystemTime::now();
243 let started = Instant::now();
244 let rows = self
245 .repository
246 .executor
247 .fetch_all(compiled)
248 .map_err(RepositoryError::Executor)?;
249 self.repository.log_sql_result(
250 SqlLogOperation::Select,
251 compiled,
252 started_at,
253 started,
254 Some(rows.len()),
255 Some(query.entity.clone()),
256 None,
257 query.comment.clone(),
258 );
259 cache.put(key, rows.clone());
260 Ok(rows)
261 }
262
263 pub fn fetch_all_with_relation_aggregates(
264 &self,
265 query: &SelectQuery,
266 relation_aggregates: &[RelationAggregate],
267 ) -> Result<Vec<Record>, RepositoryError<E::Error>> {
268 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
269 let mut rows = self.fetch_all(query)?;
270 self.enhance_relation_aggregates(&mut rows, relation_aggregates, query.aggregation_cache)?;
271 Ok(rows)
272 }
273
274 pub fn fetch_smart_list(
275 &self,
276 query: &SelectQuery,
277 ) -> Result<SmartList<Record>, RepositoryError<E::Error>> {
278 let query = self
279 .prepare_select_query(query)
280 .map_err(RepositoryError::Runtime)?;
281 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
282 self.repository.fetch_smart_list(&query)
283 }
284
285 pub fn fetch_smart_list_with_relation_aggregates(
286 &self,
287 query: &SelectQuery,
288 relation_aggregates: &[RelationAggregate],
289 ) -> Result<SmartList<Record>, RepositoryError<E::Error>> {
290 self.fetch_all_with_relation_aggregates(query, relation_aggregates)
291 .map(SmartList::from)
292 }
293
294 pub fn fetch_entities<T>(
295 &self,
296 query: &SelectQuery,
297 ) -> Result<SmartList<T>, RepositoryError<E::Error>>
298 where
299 T: Entity,
300 {
301 let query = self
302 .prepare_select_query(query)
303 .map_err(RepositoryError::Runtime)?;
304 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
305 self.repository.fetch_entities(&query)
306 }
307
308 pub fn fetch_entities_with_relation_aggregates<T>(
309 &self,
310 query: &SelectQuery,
311 relation_aggregates: &[RelationAggregate],
312 ) -> Result<SmartList<T>, RepositoryError<E::Error>>
313 where
314 T: Entity,
315 {
316 self.fetch_all_with_relation_aggregates(query, relation_aggregates)?
317 .into_iter()
318 .map(T::from_record)
319 .collect::<Result<Vec<_>, _>>()
320 .map(SmartList::from)
321 .map_err(RepositoryError::Entity)
322 }
323
324 pub fn fetch_enhanced_entities_with_relation_aggregates<T>(
325 &self,
326 query: &SelectQuery,
327 relation_aggregates: &[RelationAggregate],
328 ) -> Result<SmartList<T>, RepositoryError<E::Error>>
329 where
330 T: Entity,
331 {
332 let query = self
333 .prepare_select_query(query)
334 .map_err(RepositoryError::Runtime)?;
335
336 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
337
338 let mut rows = self.repository.fetch_all(&query)?;
339 self.enhance_relation_aggregates(&mut rows, relation_aggregates, query.aggregation_cache)?;
340 self.enhance_query_relations(&mut rows, &query)?;
341 self.enhance_relations(&mut rows)?;
342 rows.into_iter()
343 .map(T::from_record)
344 .collect::<Result<Vec<_>, _>>()
345 .map(SmartList::from)
346 .map_err(RepositoryError::Entity)
347 }
348
349 pub fn fetch_enhanced_entities<T>(
350 &self,
351 query: &SelectQuery,
352 ) -> Result<SmartList<T>, RepositoryError<E::Error>>
353 where
354 T: Entity,
355 {
356 let query = self
357 .prepare_select_query(query)
358 .map_err(RepositoryError::Runtime)?;
359 let _guard = crate::context::QueryCommentGuard::new(self.repository.metadata.context, query.comment.clone());
360
361 let mut rows = self.repository.fetch_all(&query)?;
362 self.enhance_query_relations(&mut rows, &query)?;
363 self.enhance_relations(&mut rows)?;
364 rows.into_iter()
365 .map(T::from_record)
366 .collect::<Result<Vec<_>, _>>()
367 .map(SmartList::from)
368 .map_err(RepositoryError::Entity)
369 }
370
371 pub fn insert(&self, command: &InsertCommand) -> Result<u64, RepositoryError<E::Error>> {
372 let command = self
373 .prepare_insert_command(command)
374 .map_err(RepositoryError::Runtime)?;
375 self.execute_prepared_insert(command)
376 }
377
378 pub fn update(&self, command: &UpdateCommand) -> Result<u64, RepositoryError<E::Error>> {
379 let command = self
380 .prepare_update_command(command)
381 .map_err(RepositoryError::Runtime)?;
382 self.execute_prepared_update(command)
383 }
384
385 pub fn delete(&self, command: &DeleteCommand) -> Result<u64, RepositoryError<E::Error>> {
386 let mut command = command.clone();
387 if let Some(behavior) = self.behavior() {
388 behavior
389 .before_delete(self.repository.metadata.context, &mut command)
390 .map_err(RepositoryError::Runtime)?;
391 }
392 self.enforce_delete_policy(&mut command)
393 .map_err(RepositoryError::Runtime)?;
394 let old_values = self.fetch_current_event_row(&command.entity, &command.id)?;
395 let affected = self.repository.delete(&command)?;
396 self.emit_event(EntityEvent::deleted_with_old_values(
397 command.entity,
398 command.id,
399 command.expected_version,
400 old_values,
401 ))
402 .map_err(RepositoryError::Runtime)?;
403 Ok(affected)
404 }
405
406 pub fn recover(&self, command: &RecoverCommand) -> Result<u64, RepositoryError<E::Error>> {
407 let mut command = command.clone();
408 if let Some(behavior) = self.behavior() {
409 behavior
410 .before_recover(self.repository.metadata.context, &mut command)
411 .map_err(RepositoryError::Runtime)?;
412 }
413 self.enforce_recover_policy(&mut command)
414 .map_err(RepositoryError::Runtime)?;
415 let old_values = self.fetch_current_event_row(&command.entity, &command.id)?;
416 let affected = self.repository.recover(&command)?;
417 self.emit_event(EntityEvent::recovered_with_old_values(
418 command.entity,
419 command.id,
420 command.expected_version,
421 old_values,
422 ))
423 .map_err(RepositoryError::Runtime)?;
424 Ok(affected)
425 }
426
427 fn emit_event(&self, event: EntityEvent) -> Result<(), RuntimeError> {
428 self.repository.metadata.context.send_event(event)
429 }
430
431 pub(super) fn execute_prepared_insert(
432 &self,
433 command: InsertCommand,
434 ) -> Result<u64, RepositoryError<E::Error>> {
435 let affected = self.repository.insert(&command)?;
436 self.emit_event(EntityEvent::created(command.entity, command.values))
437 .map_err(RepositoryError::Runtime)?;
438 Ok(affected)
439 }
440
441 pub(super) fn execute_prepared_update(
442 &self,
443 command: UpdateCommand,
444 ) -> Result<u64, RepositoryError<E::Error>> {
445 let old_values = self.fetch_current_event_row(&command.entity, &command.id)?;
446 let affected = self.repository.update(&command)?;
447 let updated_fields = command.values.keys().cloned().collect();
448 let mut values = command.values.clone();
449 values.insert("id".to_owned(), command.id.clone());
450 if let Some(version) = command.expected_version {
451 values.insert("version".to_owned(), Value::I64(version + 1));
452 }
453 let mut new_values = old_values.clone().unwrap_or_default();
454 for (field, value) in &values {
455 new_values.insert(field.clone(), value.clone());
456 }
457 self.emit_event(EntityEvent::updated_with_old_values(
458 command.entity,
459 values,
460 old_values,
461 new_values,
462 updated_fields,
463 ))
464 .map_err(RepositoryError::Runtime)?;
465 Ok(affected)
466 }
467
468 fn fetch_current_event_row(
469 &self,
470 entity: &str,
471 id: &Value,
472 ) -> Result<Option<Record>, RepositoryError<E::Error>> {
473 if self.repository.metadata.context.event_sink.is_none() {
474 return Ok(None);
475 }
476 let descriptor = self
477 .repository
478 .metadata
479 .context
480 .require_entity(entity)
481 .map_err(RepositoryError::Runtime)?;
482 let Some(id_property) = descriptor.id_property() else {
483 return Ok(None);
484 };
485 let mut rows = self.fetch_all(
486 &SelectQuery::new(entity).filter(Expr::eq(id_property.name.clone(), id.clone())),
487 )?;
488 Ok(rows.pop())
489 }
490
491 pub(super) fn scoped_repository(&self, entity: String) -> ResolvedRepository<'a, D, E> {
492 ResolvedRepository {
493 entity,
494 repository: ContextRepository {
495 metadata: UserContextMetadata {
496 context: self.repository.metadata.context,
497 },
498 dialect: self.repository.dialect,
499 executor: self.repository.executor,
500 },
501 }
502 }
503}