use std::sync::Arc;
use teaql_core::{
AggregationCacheOptions, DeleteCommand, Entity, Expr, InsertCommand, Record, RecoverCommand,
RelationAggregate, SelectQuery, SmartList, UpdateCommand, Value,
};
use teaql_sql::{CompiledQuery, SqlDialect};
use crate::{
CheckObjectStatus, EntityEvent, RepositoryBehavior, RepositoryError, RuntimeError,
SqlLogOperation, clear_record_status, mark_record_status,
};
use super::{
AggregationCacheBackend, ContextRepository, InMemoryAggregationCache, QueryExecutor,
ResolvedRepository, UserContextMetadata, helpers::*,
};
impl<'a, D, E> ResolvedRepository<'a, D, E>
where
D: SqlDialect,
E: QueryExecutor,
{
pub(super) fn query_behavior(&self, entity: &str) -> Option<Arc<dyn RepositoryBehavior>> {
self.repository.metadata.context.repository_behavior(entity)
}
pub(super) fn behavior(&self) -> Option<Arc<dyn RepositoryBehavior>> {
self.repository
.metadata
.context
.repository_behavior(&self.entity)
}
pub fn entity(&self) -> &str {
&self.entity
}
pub fn select(&self) -> SelectQuery {
SelectQuery::new(self.entity.clone())
}
pub fn insert_command(&self) -> InsertCommand {
InsertCommand::new(self.entity.clone())
}
pub fn prepare_insert_command(
&self,
command: &InsertCommand,
) -> Result<InsertCommand, RuntimeError> {
let mut command = command.clone();
if let Some(behavior) = self.behavior() {
behavior.before_insert(self.repository.metadata.context, &mut command)?;
}
let entity = self
.repository
.metadata
.context
.require_entity(&command.entity)?;
if let Some(id_property) = entity.id_property() {
let needs_id = !command.values.contains_key(&id_property.name)
|| matches!(command.values.get(&id_property.name), Some(Value::Null));
if needs_id {
let id = self.repository.metadata.context.next_id(&command.entity)?;
command
.values
.insert(id_property.name.clone(), Value::U64(id));
}
}
mark_record_status(&mut command.values, CheckObjectStatus::Create);
let check_result = self
.repository
.metadata
.context
.check_and_fix_record(&command.entity, &mut command.values);
clear_record_status(&mut command.values);
check_result?;
Ok(command)
}
pub fn update_command(&self, id: impl Into<Value>) -> UpdateCommand {
UpdateCommand::new(self.entity.clone(), id)
}
pub fn prepare_update_command(
&self,
command: &UpdateCommand,
) -> Result<UpdateCommand, RuntimeError> {
let mut command = command.clone();
if let Some(behavior) = self.behavior() {
behavior.before_update(self.repository.metadata.context, &mut command)?;
}
mark_record_status(&mut command.values, CheckObjectStatus::Update);
let check_result = self
.repository
.metadata
.context
.check_and_fix_record(&command.entity, &mut command.values);
clear_record_status(&mut command.values);
check_result?;
Ok(command)
}
pub fn delete_command(&self, id: impl Into<Value>) -> DeleteCommand {
DeleteCommand::new(self.entity.clone(), id)
}
pub fn recover_command(&self, id: impl Into<Value>, expected_version: i64) -> RecoverCommand {
RecoverCommand::new(self.entity.clone(), id, expected_version)
}
pub fn compile(&self, query: &SelectQuery) -> Result<CompiledQuery, RuntimeError> {
let mut query = query.clone();
if let Some(behavior) = self.query_behavior(&query.entity) {
behavior.before_select(self.repository.metadata.context, &mut query)?;
}
self.repository.compile(&query)
}
pub fn fetch_all(&self, query: &SelectQuery) -> Result<Vec<Record>, RepositoryError<E::Error>> {
let mut query = query.clone();
if let Some(behavior) = self.query_behavior(&query.entity) {
behavior
.before_select(self.repository.metadata.context, &mut query)
.map_err(RepositoryError::Runtime)?;
}
let mut rows = self.fetch_prepared_query(&query)?;
self.enhance_object_group_bys(&mut rows, &query.object_group_bys)?;
self.enhance_child_queries(&mut rows, &query.child_enhancements)?;
Ok(rows)
}
fn fetch_prepared_query(
&self,
query: &SelectQuery,
) -> Result<Vec<Record>, RepositoryError<E::Error>> {
let compiled = self
.repository
.compile(query)
.map_err(RepositoryError::Runtime)?;
if let Some(options) = query.aggregation_cache.filter(|options| options.enabled) {
if let Some(cache) = self
.repository
.metadata
.context
.get_resource::<Arc<dyn AggregationCacheBackend>>()
{
return self.fetch_prepared_query_with_cache(
query,
&compiled,
options,
cache.as_ref(),
);
}
if let Some(cache) = self
.repository
.metadata
.context
.get_resource::<InMemoryAggregationCache>()
{
return self.fetch_prepared_query_with_cache(query, &compiled, options, cache);
}
}
self.repository.log_sql(SqlLogOperation::Select, &compiled);
self.repository
.executor
.fetch_all(&compiled)
.map_err(RepositoryError::Executor)
}
fn fetch_prepared_query_with_cache(
&self,
query: &SelectQuery,
compiled: &CompiledQuery,
options: AggregationCacheOptions,
cache: &dyn AggregationCacheBackend,
) -> Result<Vec<Record>, RepositoryError<E::Error>> {
let key = aggregation_cache_key(
cache.namespace(),
&aggregation_cache_namespace(&query.entity),
compiled,
);
if let Some(rows) = cache.get(&key, options.cache_expired_millis) {
return Ok(rows);
}
self.repository.log_sql(SqlLogOperation::Select, compiled);
let rows = self
.repository
.executor
.fetch_all(compiled)
.map_err(RepositoryError::Executor)?;
cache.put(key, rows.clone());
Ok(rows)
}
pub fn fetch_all_with_relation_aggregates(
&self,
query: &SelectQuery,
relation_aggregates: &[RelationAggregate],
) -> Result<Vec<Record>, RepositoryError<E::Error>> {
let mut rows = self.fetch_all(query)?;
self.enhance_relation_aggregates(&mut rows, relation_aggregates, query.aggregation_cache)?;
Ok(rows)
}
pub fn fetch_smart_list(
&self,
query: &SelectQuery,
) -> Result<SmartList<Record>, RepositoryError<E::Error>> {
let mut query = query.clone();
if let Some(behavior) = self.query_behavior(&query.entity) {
behavior
.before_select(self.repository.metadata.context, &mut query)
.map_err(RepositoryError::Runtime)?;
}
self.repository.fetch_smart_list(&query)
}
pub fn fetch_smart_list_with_relation_aggregates(
&self,
query: &SelectQuery,
relation_aggregates: &[RelationAggregate],
) -> Result<SmartList<Record>, RepositoryError<E::Error>> {
self.fetch_all_with_relation_aggregates(query, relation_aggregates)
.map(SmartList::from)
}
pub fn fetch_entities<T>(
&self,
query: &SelectQuery,
) -> Result<SmartList<T>, RepositoryError<E::Error>>
where
T: Entity,
{
let mut query = query.clone();
if let Some(behavior) = self.query_behavior(&query.entity) {
behavior
.before_select(self.repository.metadata.context, &mut query)
.map_err(RepositoryError::Runtime)?;
}
self.repository.fetch_entities(&query)
}
pub fn fetch_entities_with_relation_aggregates<T>(
&self,
query: &SelectQuery,
relation_aggregates: &[RelationAggregate],
) -> Result<SmartList<T>, RepositoryError<E::Error>>
where
T: Entity,
{
self.fetch_all_with_relation_aggregates(query, relation_aggregates)?
.into_iter()
.map(T::from_record)
.collect::<Result<Vec<_>, _>>()
.map(SmartList::from)
.map_err(RepositoryError::Entity)
}
pub fn fetch_enhanced_entities_with_relation_aggregates<T>(
&self,
query: &SelectQuery,
relation_aggregates: &[RelationAggregate],
) -> Result<SmartList<T>, RepositoryError<E::Error>>
where
T: Entity,
{
let mut query = query.clone();
if let Some(behavior) = self.query_behavior(&query.entity) {
behavior
.before_select(self.repository.metadata.context, &mut query)
.map_err(RepositoryError::Runtime)?;
}
let mut rows = self.repository.fetch_all(&query)?;
self.enhance_relation_aggregates(&mut rows, relation_aggregates, query.aggregation_cache)?;
self.enhance_query_relations(&mut rows, &query)?;
self.enhance_relations(&mut rows)?;
rows.into_iter()
.map(T::from_record)
.collect::<Result<Vec<_>, _>>()
.map(SmartList::from)
.map_err(RepositoryError::Entity)
}
pub fn fetch_enhanced_entities<T>(
&self,
query: &SelectQuery,
) -> Result<SmartList<T>, RepositoryError<E::Error>>
where
T: Entity,
{
let mut query = query.clone();
if let Some(behavior) = self.query_behavior(&query.entity) {
behavior
.before_select(self.repository.metadata.context, &mut query)
.map_err(RepositoryError::Runtime)?;
}
let mut rows = self.repository.fetch_all(&query)?;
self.enhance_query_relations(&mut rows, &query)?;
self.enhance_relations(&mut rows)?;
rows.into_iter()
.map(T::from_record)
.collect::<Result<Vec<_>, _>>()
.map(SmartList::from)
.map_err(RepositoryError::Entity)
}
pub fn insert(&self, command: &InsertCommand) -> Result<u64, RepositoryError<E::Error>> {
let command = self
.prepare_insert_command(command)
.map_err(RepositoryError::Runtime)?;
self.execute_prepared_insert(command)
}
pub fn update(&self, command: &UpdateCommand) -> Result<u64, RepositoryError<E::Error>> {
let command = self
.prepare_update_command(command)
.map_err(RepositoryError::Runtime)?;
self.execute_prepared_update(command)
}
pub fn delete(&self, command: &DeleteCommand) -> Result<u64, RepositoryError<E::Error>> {
let mut command = command.clone();
if let Some(behavior) = self.behavior() {
behavior
.before_delete(self.repository.metadata.context, &mut command)
.map_err(RepositoryError::Runtime)?;
}
let old_values = self.fetch_current_event_row(&command.entity, &command.id)?;
let affected = self.repository.delete(&command)?;
self.emit_event(EntityEvent::deleted_with_old_values(
command.entity,
command.id,
command.expected_version,
old_values,
))
.map_err(RepositoryError::Runtime)?;
Ok(affected)
}
pub fn recover(&self, command: &RecoverCommand) -> Result<u64, RepositoryError<E::Error>> {
let mut command = command.clone();
if let Some(behavior) = self.behavior() {
behavior
.before_recover(self.repository.metadata.context, &mut command)
.map_err(RepositoryError::Runtime)?;
}
let old_values = self.fetch_current_event_row(&command.entity, &command.id)?;
let affected = self.repository.recover(&command)?;
self.emit_event(EntityEvent::recovered_with_old_values(
command.entity,
command.id,
command.expected_version,
old_values,
))
.map_err(RepositoryError::Runtime)?;
Ok(affected)
}
fn emit_event(&self, event: EntityEvent) -> Result<(), RuntimeError> {
self.repository.metadata.context.send_event(event)
}
pub(super) fn execute_prepared_insert(
&self,
command: InsertCommand,
) -> Result<u64, RepositoryError<E::Error>> {
let affected = self.repository.insert(&command)?;
self.emit_event(EntityEvent::created(command.entity, command.values))
.map_err(RepositoryError::Runtime)?;
Ok(affected)
}
pub(super) fn execute_prepared_update(
&self,
command: UpdateCommand,
) -> Result<u64, RepositoryError<E::Error>> {
let old_values = self.fetch_current_event_row(&command.entity, &command.id)?;
let affected = self.repository.update(&command)?;
let updated_fields = command.values.keys().cloned().collect();
let mut values = command.values.clone();
values.insert("id".to_owned(), command.id.clone());
if let Some(version) = command.expected_version {
values.insert("version".to_owned(), Value::I64(version + 1));
}
let mut new_values = old_values.clone().unwrap_or_default();
for (field, value) in &values {
new_values.insert(field.clone(), value.clone());
}
self.emit_event(EntityEvent::updated_with_old_values(
command.entity,
values,
old_values,
new_values,
updated_fields,
))
.map_err(RepositoryError::Runtime)?;
Ok(affected)
}
fn fetch_current_event_row(
&self,
entity: &str,
id: &Value,
) -> Result<Option<Record>, RepositoryError<E::Error>> {
if self.repository.metadata.context.event_sink.is_none() {
return Ok(None);
}
let descriptor = self
.repository
.metadata
.context
.require_entity(entity)
.map_err(RepositoryError::Runtime)?;
let Some(id_property) = descriptor.id_property() else {
return Ok(None);
};
let mut rows = self.fetch_all(
&SelectQuery::new(entity).filter(Expr::eq(id_property.name.clone(), id.clone())),
)?;
Ok(rows.pop())
}
pub(super) fn scoped_repository(&self, entity: String) -> ResolvedRepository<'a, D, E> {
ResolvedRepository {
entity,
repository: ContextRepository {
metadata: UserContextMetadata {
context: self.repository.metadata.context,
},
dialect: self.repository.dialect,
executor: self.repository.executor,
},
}
}
}