load bsfs storage

4 files changed, 98 insertions, 3 deletions

diff --git a/tagit/apps/desktop.py b/tagit/apps/desktop.py
index 65501ad..f30b504 100644
--- a/tagit/apps/desktop.py
+++ b/tagit/apps/desktop.py
@@ -13,6 +13,8 @@ from kivy.app import App
 from kivy.uix.settings import SettingsWithSidebar
 
 # tagit imports
+from tagit import config
+from tagit.utils import bsfs
 from tagit.windows import desktop
 
 # exports
@@ -38,11 +40,23 @@ class TagitApp(App):
 
         #from tagit.config.loader import load_settings, TAGITRC
         #cfg = load_settings(TAGITRC, 0)
-        from tagit.config import Settings
-        cfg = Settings.Open(os.path.join(os.path.dirname(__file__), 'port-config.yaml'))
+        cfg = config.Settings.Open(os.path.join(os.path.dirname(__file__), 'port-config.yaml'))
+
+        # FIXME: mb/port/bsfs
+        # open BSFS storage
+        store = bsfs.Open(cfg('session', 'bsfs'))
+        # check storage schema
+        # FIXME: Move somewhere else?!
+        with open(os.path.join(os.path.dirname(__file__), 'port-schema.nt'), 'rt') as ifile:
+            required_schema = bsfs.schema.from_string(ifile.read())
+
+        # FIXME: Since the store isn't persistent, we migrate to the required one here.
+        #if not required_schema <= store.schema:
+        #    raise Exception('')
+        store.migrate(required_schema)
 
         # create widget
-        return desktop.MainWindow(cfg, None, None) # FIXME: expects cfg, stor, log arguments
+        return desktop.MainWindow(cfg, store, None) # FIXME: expects cfg, stor, log arguments
 
     def on_start(self):
         # trigger startup operations
@@ -55,6 +69,10 @@ def main(argv):
     app = TagitApp()
     app.run()
 
+## config
+
+config.declare(('session', 'bsfs'), config.Any(), {},
+    __name__, 'bsfs config', 'Configuration to connect to a BSFS storage.')
 
 ## main ##
 
diff --git a/tagit/apps/port-config.yaml b/tagit/apps/port-config.yaml
index d5c45e9..76fc580 100644
--- a/tagit/apps/port-config.yaml
+++ b/tagit/apps/port-config.yaml
@@ -2,6 +2,11 @@ session:
   first_start: false
   paths:
     searchlog: ~/.tagit.log
+  bsfs: # FIXME: rename to storage, but that space is currently polluted
+    Graph:
+      backend:
+        SparqlStore: {}
+      user: 'http://example.com/me'
 storage:
   index:
     preview_size:
diff --git a/tagit/apps/port-schema.nt b/tagit/apps/port-schema.nt
new file mode 100644
index 0000000..ec111d4
--- /dev/null
+++ b/tagit/apps/port-schema.nt
@@ -0,0 +1,62 @@
+# common external prefixes
+prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+prefix xsd: <http://www.w3.org/2001/XMLSchema#>
+prefix schema: <http://schema.org/>
+
+# common bsfs prefixes
+prefix bsfs: <http://bsfs.ai/schema/>
+prefix bse: <http://bsfs.ai/schema/Entity#>
+prefix bst: <http://bsfs.ai/schema/Tag#>
+
+# essential nodes
+bsfs:Entity rdfs:subClassOf bsfs:Node .
+bsfs:File rdfs:subClassOf bsfs:Entity .
+bsfs:Tag rdfs:subClassOf bsfs:Node .
+bsfs:Group rdfs:subClassOf bsfs:Node .
+
+# common definitions
+bsfs:Number rdfs:subClassOf bsfs:Literal .
+bsfs:Time rdfs:subClassOf bsfs:Literal .
+xsd:string rdfs:subClassOf bsfs:Literal .
+xsd:integer rdfs:subClassOf bsfs:Number .
+
+bse:filename rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:File ;
+    rdfs:range xsd:string ;
+    rdfs:label "File name"^^xsd:string ;
+    schema:description "Filename of entity in some filesystem."^^xsd:string ;
+    bsfs:unique "false"^^xsd:boolean .
+
+bse:filesize rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:File ;
+    rdfs:range xsd:integer ;
+    rdfs:label "File size"^^xsd:string ;
+    schema:description "File size of entity in some filesystem."^^xsd:string ;
+    bsfs:unique "false"^^xsd:boolean .
+
+bse:tag rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:File ;
+    rdfs:range bsfs:Tag ;
+    bsfs:unique "false"^^xsd:boolean .
+
+bst:label rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:Tag ;
+    rdfs:range xsd:string ;
+    bsfs:unique "true"^^xsd:boolean .
+
+bse:author rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:Entity ;
+    rdfs:range xsd:string ;
+    bsfs:unique "true"^^xsd:boolean .
+
+bse:comment rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:Node ;
+    rdfs:range xsd:string ;
+    bsfs:unique "false"^^xsd:boolean .
+
+bse:group rdfs:subClassOf bsfs:Predicate ;
+    rdfs:domain bsfs:Entity ;
+    rdfs:range bsfs:Group ;
+    bsfs:unique "false"^^xsd:boolean .
+
diff --git a/tagit/windows/__init__.py b/tagit/windows/__init__.py
new file mode 100644
index 0000000..c3ec3c0
--- /dev/null
+++ b/tagit/windows/__init__.py
@@ -0,0 +1,10 @@
+"""
+
+Part of the tagit module.
+A copy of the license is provided with the project.
+Author: Matthias Baumgartner, 2022
+"""
+# inner-module imports
+from .desktop import MainWindow
+
+## EOF ##