refstore: Add non-transactional store and rw store

5 files changed, 60 insertions, 0 deletions

diff --git a/refstore/batch.go b/refstore/batch.go
new file mode 100644
index 00000000..05e0f1cb
--- /dev/null
+++ b/refstore/batch.go
@@ -0,0 +1,38 @@
+package refstore
+
+import "codeberg.org/lindenii/furgit/objectid"
+
+// Batch applies reference operations immediately, one operation at a time.
+//
+// Unlike Transaction, Batch does not stage changes for one atomic commit.
+// Each method attempts its update immediately and returns that operation's
+// error, if any.
+type Batch interface {
+	// Create creates one detached reference, requiring that the logical
+	// reference does not already exist.
+	Create(name string, newID objectid.ObjectID) error
+	// Update updates one detached reference, requiring that the current logical
+	// reference value matches oldID.
+	Update(name string, newID, oldID objectid.ObjectID) error
+	// Delete deletes one detached reference, requiring that the current logical
+	// reference value matches oldID.
+	Delete(name string, oldID objectid.ObjectID) error
+	// Verify verifies that the current logical reference value matches oldID.
+	Verify(name string, oldID objectid.ObjectID) error
+
+	// CreateSymbolic creates one symbolic reference, requiring that the named
+	// reference does not already exist.
+	CreateSymbolic(name, newTarget string) error
+	// UpdateSymbolic updates one symbolic reference directly, requiring that its
+	// current target matches oldTarget.
+	UpdateSymbolic(name, newTarget, oldTarget string) error
+	// DeleteSymbolic deletes one symbolic reference directly, requiring that its
+	// current target matches oldTarget.
+	DeleteSymbolic(name, oldTarget string) error
+	// VerifySymbolic verifies that the named symbolic reference currently points
+	// at oldTarget.
+	VerifySymbolic(name, oldTarget string) error
+
+	// Close releases any resources associated with the batch.
+	Close() error
+}
diff --git a/refstore/batch_store.go b/refstore/batch_store.go
new file mode 100644
index 00000000..8e821eb6
--- /dev/null
+++ b/refstore/batch_store.go
@@ -0,0 +1,7 @@
+package refstore
+
+// BatchStore begins non-atomic reference batches.
+type BatchStore interface {
+	// BeginBatch creates one new immediate-apply batch.
+	BeginBatch() (Batch, error)
+}
diff --git a/refstore/read_write.go b/refstore/read_write.go
new file mode 100644
index 00000000..8ac592bb
--- /dev/null
+++ b/refstore/read_write.go
@@ -0,0 +1,7 @@
+package refstore
+
+// ReadWriteStore supports both reading and atomic transactional updates.
+type ReadWriteStore interface {
+	ReadingStore
+	TransactionalStore
+}
diff --git a/refstore/read_write_store.go b/refstore/read_write_store.go
new file mode 100644
index 00000000..506a9aae
--- /dev/null
+++ b/refstore/read_write_store.go
@@ -0,0 +1,8 @@
+package refstore
+
+// ReadWriteStore supports reading, atomic transactions, and immediate batches.
+type ReadWriteStore interface {
+	ReadingStore
+	TransactionalStore
+	BatchStore
+}
diff --git a/refstore/transactional.go b/refstore/transactional_store.go
index 8f5c32cd..8f5c32cd 100644
--- a/refstore/transactional.go
+++ b/refstore/transactional_store.go