global: addition of functions registry

* FIX Removes dependency on JSONAlchemy from Invenio package.

Signed-off-by: Jiri Kuncar <[email protected]>

invenio_records/api.py

@@ -30,6 +30,7 @@
 from invenio.utils.datastructures import SmartDict
 
 from .models import RecordMetadata
+from .registry import functions
 from .signals import (after_record_insert, after_record_update,
                       before_record_insert, before_record_update)
 
@@ -72,7 +73,6 @@ def create(cls, data, schema=None):
         try:
             record = cls(unicodifier(data))
 
-            from invenio.modules.jsonalchemy.registry import functions
             list(functions('recordext'))
 
             toposort_send(before_record_insert, record)
@@ -103,7 +103,6 @@ def patch(self, patch):
     def commit(self):
         db.session.begin(subtransactions=True)
         try:
-            from invenio.modules.jsonalchemy.registry import functions
             list(functions('recordext'))
 
             toposort_send(before_record_update, self)

invenio_records/registry.py

@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of Invenio.
+# Copyright (C) 2013, 2014, 2015 CERN.
+#
+# Invenio is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+#
+# Invenio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Invenio; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+
+"""Define registries for extending *Record* class."""
+
+from flask_registry import PkgResourcesDirDiscoveryRegistry, \
+    ModuleAutoDiscoveryRegistry, RegistryProxy
+
+from invenio.ext.registry import ModuleAutoDiscoverySubRegistry
+from invenio.utils.datastructures import LazyDict
+
+
+def jsonext(namespace):
+    return RegistryProxy(namespace, ModuleAutoDiscoveryRegistry, namespace)
+
+
+def function_proxy(namespace):
+    return RegistryProxy(
+        namespace + '.functions',
+        ModuleAutoDiscoverySubRegistry,
+        'functions',
+        registry_namespace=jsonext(namespace)
+    )
+
+
+def functions(namespace=None):
+    funcs = dict((module.__name__.split('.')[-1],
+                 getattr(module, module.__name__.split('.')[-1]))
+                 for module in function_proxy('jsonext'))
+    if namespace is not None:
+        funcs.update((module.__name__.split('.')[-1],
+                     getattr(module, module.__name__.split('.')[-1]))
+                     for module in function_proxy(namespace))
+    return funcs