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use super::{Fact, SemanticError, SemanticStore};
impl SemanticStore {
/// Get a fact by ID from SQLite.
///
/// Returns `None` if the fact does not exist or its content cannot be decrypted.
pub fn get_fact(&self, fact_id: &str) -> Result<Option<Fact>, SemanticError> {
let pool = &self.db;
Ok(self.db.with_conn(|conn| {
let result = conn.query_row(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts WHERE id = ?1",
[fact_id],
|row| {
let raw_object: String = row.get(5)?;
Ok((
Fact {
id: row.get(0)?,
namespace: row.get(1)?,
category: row.get(2)?,
subject: row.get(3)?,
predicate: row.get(4)?,
object: String::new(),
confidence: row.get(6)?,
source_episode_id: row.get(7)?,
agent: row.get(8)?,
},
raw_object,
))
},
);
match result {
Ok((mut fact, raw_object)) => match pool.try_decrypt_content(&raw_object) {
Some(obj) => {
fact.object = obj;
Ok(Some(fact))
}
None => Ok(None),
},
Err(rusqlite::Error::QueryReturnedNoRows) => Ok(None),
Err(e) => Err(e.into()),
}
})?)
}
/// Get all facts by category, optionally filtered by namespace.
pub fn get_facts_by_category(
&self,
category: &str,
namespace: Option<&str>,
) -> Result<Vec<Fact>, SemanticError> {
let pool = &self.db;
Ok(self.db.with_conn(|conn| {
let (sql, params): (String, Vec<Box<dyn rusqlite::types::ToSql>>) = match namespace {
Some(ns) => (
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts
WHERE category = ?1 AND (namespace = ?2 OR namespace LIKE ?3) AND superseded_by IS NULL
ORDER BY updated_at DESC"
.to_string(),
vec![
Box::new(category.to_string()),
Box::new(ns.to_string()),
Box::new(format!("{ns}/%")),
],
),
None => (
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts WHERE category = ?1 AND superseded_by IS NULL
ORDER BY updated_at DESC"
.to_string(),
vec![Box::new(category.to_string())],
),
};
let mut stmt = conn.prepare(&sql)?;
let params_ref: Vec<&dyn rusqlite::types::ToSql> =
params.iter().map(|p| p.as_ref()).collect();
let facts = stmt
.query_map(params_ref.as_slice(), |row| {
let raw_object: String = row.get(5)?;
Ok((
Fact {
id: row.get(0)?,
namespace: row.get(1)?,
category: row.get(2)?,
subject: row.get(3)?,
predicate: row.get(4)?,
object: String::new(),
confidence: row.get(6)?,
source_episode_id: row.get(7)?,
agent: row.get(8)?,
},
raw_object,
))
})?
.filter_map(|r| match r {
Ok((mut fact, raw)) => {
let obj = pool.try_decrypt_content(&raw)?;
fact.object = obj;
Some(fact)
}
Err(_) => None,
})
.collect::<Vec<_>>();
Ok(facts)
})?)
}
/// Get all facts about a specific subject.
pub fn get_facts_about(&self, subject: &str) -> Result<Vec<Fact>, SemanticError> {
self.get_facts_about_in_namespace(subject, None)
}
/// Get facts about a specific subject, optionally filtered by namespace.
pub fn get_facts_about_in_namespace(
&self,
subject: &str,
namespace: Option<&str>,
) -> Result<Vec<Fact>, SemanticError> {
let pool = &self.db;
Ok(self.db.with_conn(|conn| {
let row_to_raw_fact = |row: &rusqlite::Row<'_>| -> rusqlite::Result<(Fact, String)> {
let raw_object: String = row.get(5)?;
Ok((
Fact {
id: row.get(0)?,
namespace: row.get(1)?,
category: row.get(2)?,
subject: row.get(3)?,
predicate: row.get(4)?,
object: String::new(),
confidence: row.get(6)?,
source_episode_id: row.get(7)?,
agent: row.get(8)?,
},
raw_object,
))
};
let decrypt_filter = |r: rusqlite::Result<(Fact, String)>| -> Option<Fact> {
let (mut fact, raw) = r.ok()?;
fact.object = pool.try_decrypt_content(&raw)?;
Some(fact)
};
let facts: Vec<Fact> = if let Some(ns) = namespace {
let mut stmt = conn.prepare(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts
WHERE subject = ?1 AND (namespace = ?2 OR namespace LIKE ?3)
ORDER BY confidence DESC",
)?;
let prefix = format!("{ns}/%");
let rows =
stmt.query_map(rusqlite::params![subject, ns, &prefix], row_to_raw_fact)?;
rows.filter_map(decrypt_filter).collect()
} else {
let mut stmt = conn.prepare(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts
WHERE subject = ?1
ORDER BY confidence DESC",
)?;
let rows = stmt.query_map([subject], row_to_raw_fact)?;
rows.filter_map(decrypt_filter).collect()
};
Ok(facts)
})?)
}
/// List all active (non-superseded) facts, optionally scoped to a namespace.
pub fn list_all(&self) -> Result<Vec<Fact>, SemanticError> {
self.list_by_namespace(None)
}
/// List all active facts in a namespace. **Unbounded** — kept for
/// callers that genuinely need the full set (memory-summary
/// inspection). New API surface (HTTP/gRPC) should use
/// [`list_by_namespace_paginated`] so a multi-thousand-fact store
/// doesn't return a single mega-response.
pub fn list_by_namespace(&self, namespace: Option<&str>) -> Result<Vec<Fact>, SemanticError> {
self.list_by_namespace_paginated(namespace, None, 0)
}
/// Paginated variant of [`list_by_namespace`]. `limit = None` means
/// "no LIMIT clause" (matches the legacy unbounded behavior);
/// `Some(n)` appends `LIMIT n OFFSET offset`. `offset` is ignored
/// when `limit` is `None`.
pub fn list_by_namespace_paginated(
&self,
namespace: Option<&str>,
limit: Option<usize>,
offset: usize,
) -> Result<Vec<Fact>, SemanticError> {
let pool = &self.db;
Ok(self.db.with_conn(|conn| {
let row_to_raw_fact = |row: &rusqlite::Row<'_>| -> rusqlite::Result<(Fact, String)> {
let raw_object: String = row.get(5)?;
Ok((
Fact {
id: row.get(0)?,
namespace: row.get(1)?,
category: row.get(2)?,
subject: row.get(3)?,
predicate: row.get(4)?,
object: String::new(),
confidence: row.get(6)?,
source_episode_id: row.get(7)?,
agent: row.get(8)?,
},
raw_object,
))
};
let decrypt_filter = |r: rusqlite::Result<(Fact, String)>| -> Option<Fact> {
let (mut fact, raw) = r.ok()?;
fact.object = pool.try_decrypt_content(&raw)?;
Some(fact)
};
let limit_clause = match limit {
Some(n) => format!(" LIMIT {n} OFFSET {offset}"),
None => String::new(),
};
let facts: Vec<Fact> = if let Some(ns) = namespace {
let sql = format!(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts
WHERE superseded_by IS NULL AND (namespace = ?1 OR namespace LIKE ?2)
ORDER BY rowid DESC{limit_clause}"
);
let mut stmt = conn.prepare(&sql)?;
let prefix = format!("{ns}/%");
let rows: Vec<Fact> = stmt
.query_map(rusqlite::params![ns, &prefix], row_to_raw_fact)?
.filter_map(decrypt_filter)
.collect();
rows
} else {
let sql = format!(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts WHERE superseded_by IS NULL
ORDER BY rowid DESC{limit_clause}"
);
let mut stmt = conn.prepare(&sql)?;
let rows: Vec<Fact> = stmt
.query_map([], row_to_raw_fact)?
.filter_map(decrypt_filter)
.collect();
rows
};
Ok(facts)
})?)
}
/// Cheap existence probe used by `namespace_is_empty` callers (chat /
/// recall onboarding hints). Avoids loading + decrypting every fact in
/// the namespace just to check `.is_empty()`.
pub fn has_facts_in_namespace(&self, namespace: Option<&str>) -> Result<bool, SemanticError> {
Ok(self.db.with_conn(|conn| {
let exists: i64 = if let Some(ns) = namespace {
let prefix = format!("{ns}/%");
conn.query_row(
"SELECT EXISTS(SELECT 1 FROM semantic_facts
WHERE superseded_by IS NULL
AND (namespace = ?1 OR namespace LIKE ?2)
LIMIT 1)",
rusqlite::params![ns, &prefix],
|row| row.get(0),
)?
} else {
conn.query_row(
"SELECT EXISTS(SELECT 1 FROM semantic_facts
WHERE superseded_by IS NULL
LIMIT 1)",
[],
|row| row.get(0),
)?
};
Ok(exists != 0)
})?)
}
/// List all namespaces with their fact and episode counts.
///
/// SQLite doesn't have `FULL OUTER JOIN`, so the merge is done with
/// a `UNION ALL` of two per-table count queries reaggregated by
/// `SUM`. One prepared statement, one round-trip, no Rust-side
/// HashMap merge — replaces the previous two-query + merge shape
/// that O(namespaces × hash) was paying for at every call.
pub fn list_namespaces(&self) -> Result<Vec<NamespaceStats>, SemanticError> {
Ok(self.db.with_conn(|conn| {
let mut stmt = conn.prepare(
"SELECT namespace,
SUM(fact_count) AS fact_count,
SUM(episode_count) AS episode_count
FROM (
SELECT namespace, COUNT(*) AS fact_count, 0 AS episode_count
FROM semantic_facts
WHERE superseded_by IS NULL
GROUP BY namespace
UNION ALL
SELECT namespace, 0 AS fact_count, COUNT(*) AS episode_count
FROM episodes
GROUP BY namespace
)
GROUP BY namespace
ORDER BY namespace",
)?;
let rows: Vec<NamespaceStats> = stmt
.query_map([], |row| {
Ok(NamespaceStats {
namespace: row.get(0)?,
fact_count: row.get(1)?,
episode_count: row.get(2)?,
})
})?
.collect::<Result<Vec<_>, _>>()?;
Ok(rows)
})?)
}
/// Delete a fact from both SQLite and RuVector.
pub async fn delete_fact(&self, fact_id: &str) -> Result<(), SemanticError> {
self.db.with_conn(|conn| {
conn.execute("DELETE FROM semantic_facts WHERE id = ?1", [fact_id])?;
Ok(())
})?;
let ruv_result = self.ruv.delete("facts_vec", fact_id).await;
if let Err(e) = ruv_result {
tracing::warn!(
"RuVector delete failed for {}, re-syncing on next startup",
fact_id
);
return Err(SemanticError::RuVector(e));
}
Ok(())
}
/// Delete many facts from both SQLite and RuVector in one round-trip
/// each. Used by `handle_forget` so an N-result match collapses from
/// N pool-lock acquisitions to one SQL `DELETE … WHERE id IN (…)`
/// plus one batched RuVector pass. Returns the number of rows the
/// SQL DELETE actually removed (may be smaller than `ids.len()` if a
/// fact was already gone). Per-id RuVector failures are logged but
/// don't fail the call — the deferred re-sync on next startup
/// reconciles divergence, same as `delete_fact` already does.
pub async fn delete_facts_batch(&self, ids: &[&str]) -> Result<usize, SemanticError> {
if ids.is_empty() {
return Ok(0);
}
let deleted = self.db.with_conn(|conn| {
let placeholders = std::iter::repeat_n("?", ids.len())
.collect::<Vec<_>>()
.join(",");
let sql = format!("DELETE FROM semantic_facts WHERE id IN ({placeholders})");
let params: Vec<&dyn rusqlite::ToSql> =
ids.iter().map(|id| id as &dyn rusqlite::ToSql).collect();
let rows = conn.execute(&sql, params.as_slice())?;
Ok(rows)
})?;
let failures = self
.ruv
.delete_batch("facts_vec", ids)
.await
.map_err(SemanticError::RuVector)?;
for (id, e) in failures {
tracing::warn!(
fact_id = %id,
"RuVector delete failed (batch), re-syncing on next startup: {e}"
);
}
Ok(deleted)
}
/// Find facts whose subject, predicate, or object contains the query string.
///
/// Used by the Forget intent to find facts matching a target description.
pub fn find_facts_matching(
&self,
query: &str,
namespace: Option<&str>,
) -> Result<Vec<Fact>, SemanticError> {
let pool = &self.db;
let escaped = query.replace('%', r"\%").replace('_', r"\_");
let pattern = format!("%{escaped}%");
Ok(self.db.with_conn(|conn| {
let row_to_raw_fact = |row: &rusqlite::Row<'_>| -> rusqlite::Result<(Fact, String)> {
let raw_object: String = row.get(5)?;
Ok((
Fact {
id: row.get(0)?,
namespace: row.get(1)?,
category: row.get(2)?,
subject: row.get(3)?,
predicate: row.get(4)?,
object: String::new(),
confidence: row.get(6)?,
source_episode_id: row.get(7)?,
agent: row.get(8)?,
},
raw_object,
))
};
let decrypt_filter = |r: rusqlite::Result<(Fact, String)>| -> Option<Fact> {
let (mut fact, raw) = r.ok()?;
fact.object = pool.try_decrypt_content(&raw)?;
Some(fact)
};
let facts: Vec<Fact> = if let Some(ns) = namespace {
let mut stmt = conn.prepare(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts
WHERE superseded_by IS NULL
AND (namespace = ?2 OR namespace LIKE ?3)
AND (subject LIKE ?1 ESCAPE '\\' OR predicate LIKE ?1 ESCAPE '\\' OR object LIKE ?1 ESCAPE '\\')
ORDER BY rowid DESC
LIMIT 50",
)?;
let prefix = format!("{ns}/%");
let rows =
stmt.query_map(rusqlite::params![&pattern, ns, &prefix], row_to_raw_fact)?;
rows.filter_map(decrypt_filter).collect()
} else {
let mut stmt = conn.prepare(
"SELECT id, namespace, category, subject, predicate, object, confidence, source_episode_id, agent
FROM semantic_facts
WHERE superseded_by IS NULL
AND (subject LIKE ?1 ESCAPE '\\' OR predicate LIKE ?1 ESCAPE '\\' OR object LIKE ?1 ESCAPE '\\')
ORDER BY rowid DESC
LIMIT 50",
)?;
let rows = stmt.query_map([&pattern], row_to_raw_fact)?;
rows.filter_map(decrypt_filter).collect()
};
Ok(facts)
})?)
}
}
/// Statistics for a single namespace.
#[derive(Debug, Clone)]
pub struct NamespaceStats {
pub namespace: String,
pub fact_count: i64,
pub episode_count: i64,
}