Added the interfaces we need to implement in order to support Loading/Saving of ActivityPub items

storage/filters.go

@@ -0,0 +1,22 @@
+package storage
+
+import (
+	as "github.com/go-ap/activitystreams"
+)
+
+// Filterable
+type Filterable interface {
+	Types() []as.ActivityVocabularyType
+	IRIs() []as.IRI
+}
+
+// Paginator
+type Paginator interface {
+	QueryString() string
+	BasePage() Paginator
+	CurrentPage() Paginator
+	NextPage() Paginator
+	PrevPage() Paginator
+	FirstPage() Paginator
+	CurrentIndex() int
+}

storage/repository.go

@@ -0,0 +1,35 @@
+package storage
+
+import (
+	as "github.com/go-ap/activitystreams"
+)
+
+// Loader
+type Loader interface {
+	Load(f Filterable) (as.ItemCollection, error)
+}
+// ActivityLoader
+type ActivityLoader interface {
+	LoadActivities(f Filterable) (as.ItemCollection, error)
+}
+// ActorLoader
+type ActorLoader interface {
+	LoadActors(f Filterable) (as.ItemCollection, error)
+}
+// ObjectLoader
+type ObjectLoader interface {
+	LoadObjects(f Filterable) (as.ItemCollection, error)
+}
+// ActivitySaver
+type ActivitySaver interface {
+	SaveActivity(as.Item) (as.Item, error)
+}
+// ActorSaver
+type ActorSaver interface {
+	SaveActor(as.Item) (as.Item, error)
+}
+// ObjectSaver
+type ObjectSaver interface {
+	SaveObject(as.Item) (as.Item, error)
+}
+