Every method on the Strata struct, grouped by category.

Database

Method	Signature	Returns
open	(path: impl AsRef<Path>) -> Result<Self>	New Strata instance
cache	() -> Result<Self>	Ephemeral in-memory instance
new_handle	() -> Result<Self>	Independent handle to same database
ping	() -> Result<String>	Version string
info	() -> Result<DatabaseInfo>	Database statistics
flush	() -> Result<()>	Flushes pending writes
compact	() -> Result<()>	Triggers compaction

Branch Context

Method	Signature	Returns
current_branch	() -> &str	Current branch name
set_branch	(name: &str) -> Result<()>	Switches current branch
create_branch	(name: &str) -> Result<()>	Creates empty branch
list_branches	() -> Result<Vec<String>>	All branch names
delete_branch	(name: &str) -> Result<()>	Deletes branch + data
fork_branch	(dest: &str) -> Result<()>	Copies current branch to dest
branches	() -> Branches<'_>	Power API handle

Space Context

Method	Signature	Returns
current_space	() -> &str	Current space name
set_space	(name: &str) -> Result<()>	Switches current space
list_spaces	() -> Result<Vec<String>>	All space names in current branch
delete_space	(name: &str) -> Result<()>	Deletes empty space
delete_space_force	(name: &str) -> Result<()>	Deletes space and all its data

Note: All data methods (KV, Event, State, JSON, Vector) operate on the current space set via set_space. The default space is "default".

KV Store

Method	Signature	Returns	Notes
kv_put	(key: &str, value: impl Into<Value>) -> Result<u64>	Version	Creates or overwrites
kv_get	(key: &str) -> Result<Option<Value>>	Value or None
kv_delete	(key: &str) -> Result<bool>	Whether key existed
kv_list	(prefix: Option<&str>) -> Result<Vec<String>>	Key names

Event Log

Method	Signature	Returns	Notes
event_append	(event_type: &str, payload: Value) -> Result<u64>	Sequence number	Payload must be Object
event_get	(sequence: u64) -> Result<Option<VersionedValue>>	Event or None
event_get_by_type	(event_type: &str) -> Result<Vec<VersionedValue>>	All events of type
event_len	() -> Result<u64>	Total event count

State Cell

Method	Signature	Returns	Notes
state_set	(cell: &str, value: impl Into<Value>) -> Result<u64>	Version	Unconditional write
state_get	(cell: &str) -> Result<Option<Value>>	Value or None
state_init	(cell: &str, value: impl Into<Value>) -> Result<u64>	Version	Only if absent
state_cas	(cell: &str, expected: Option<u64>, value: impl Into<Value>) -> Result<Option<u64>>	New version or None	CAS

JSON Store

Method	Signature	Returns	Notes
json_set	(key: &str, path: &str, value: impl Into<Value>) -> Result<u64>	Version	Use ”$” for root
json_get	(key: &str, path: &str) -> Result<Option<Value>>	Value or None
json_delete	(key: &str, path: &str) -> Result<u64>	Count deleted
json_list	(prefix: Option<String>, cursor: Option<String>, limit: u64) -> Result<(Vec<String>, Option<String>)>	Keys + cursor

Vector Store

Method	Signature	Returns	Notes
vector_create_collection	(name: &str, dimension: u64, metric: DistanceMetric) -> Result<u64>	Version
vector_delete_collection	(name: &str) -> Result<bool>	Whether it existed
vector_list_collections	() -> Result<Vec<CollectionInfo>>	All collections
vector_collection_stats	(collection: &str) -> Result<CollectionInfo>	Collection details	Includes index_type, memory_bytes
vector_upsert	(collection: &str, key: &str, vector: Vec<f32>, metadata: Option<Value>) -> Result<u64>	Version
vector_batch_upsert	(collection: &str, entries: Vec<BatchVectorEntry>) -> Result<Vec<u64>>	Versions	Atomic bulk insert
vector_get	(collection: &str, key: &str) -> Result<Option<VersionedVectorData>>	Vector data or None
vector_delete	(collection: &str, key: &str) -> Result<bool>	Whether it existed
vector_search	(collection: &str, query: Vec<f32>, k: u64) -> Result<Vec<VectorMatch>>	Top-k matches	8 metadata filter operators

Branch Operations (Low-Level)

Method	Signature	Returns
branch_create	(branch_id: Option<String>, metadata: Option<Value>) -> Result<(BranchInfo, u64)>	Info + version
branch_get	(branch: &str) -> Result<Option<VersionedBranchInfo>>	Branch info or None
branch_list	(state: Option<BranchStatus>, limit: Option<u64>, offset: Option<u64>) -> Result<Vec<VersionedBranchInfo>>	Branch info list
branch_exists	(branch: &str) -> Result<bool>	Whether branch exists
branch_delete	(branch: &str) -> Result<()>	Deletes branch

Bundle Operations

Method	Signature	Returns
branch_export	(branch_id: &str, path: &str) -> Result<BranchExportResult>	Export info
branch_import	(path: &str) -> Result<BranchImportResult>	Import info
branch_validate_bundle	(path: &str) -> Result<BundleValidateResult>	Validation info

Branches Power API

Methods on the Branches handle returned by db.branches():

Method	Signature	Returns
list	() -> Result<Vec<String>>	Branch names
exists	(name: &str) -> Result<bool>	Whether branch exists
create	(name: &str) -> Result<()>	Creates empty branch
delete	(name: &str) -> Result<()>	Deletes branch
fork	(source: &str, dest: &str) -> Result<ForkInfo>	Copies branch data
diff	(branch1: &str, branch2: &str) -> Result<BranchDiff>	Compares two branches
merge	(source: &str, target: &str, strategy: MergeStrategy) -> Result<MergeInfo>	Merges source into target

Session

Method	Signature	Returns
Session::new	(db: Arc<Database>) -> Self	New session
execute	(cmd: Command) -> Result<Output>	Command result
in_transaction	() -> bool	Whether a txn is active