--- a/cubicweb/misc/scripts/ldapuser2ldapfeed.py	Fri Sep 30 18:24:17 2016 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,98 +0,0 @@
-"""turn a pyro source into a datafeed source
-
-Once this script is run, execute c-c db-check to cleanup relation tables.
-"""
-from __future__ import print_function
-
-import sys
-from collections import defaultdict
-from logilab.common.shellutils import generate_password
-
-try:
-    source_name, = __args__
-    source = repo.sources_by_uri[source_name]
-except ValueError:
-    print('you should specify the source name as script argument (i.e. after --'
-          ' on the command line)')
-    sys.exit(1)
-except KeyError:
-    print('%s is not an active source' % source_name)
-    sys.exit(1)
-
-# check source is reachable before doing anything
-if not source.get_connection().cnx:
-    print('%s is not reachable. Fix this before running this script' % source_name)
-    sys.exit(1)
-
-raw_input('Ensure you have shutdown all instances of this application before continuing.'
-          ' Type enter when ready.')
-
-system_source = repo.system_source
-
-from datetime import datetime
-from cubicweb.server.edition import EditedEntity
-
-
-print('******************** backport entity content ***************************')
-
-todelete = defaultdict(list)
-extids = set()
-duplicates = []
-for entity in rql('Any X WHERE X cw_source S, S eid %(s)s', {'s': source.eid}).entities():
-    etype = entity.cw_etype
-    if not source.support_entity(etype):
-        print("source doesn't support %s, delete %s" % (etype, entity.eid))
-        todelete[etype].append(entity)
-        continue
-    try:
-        entity.complete()
-    except Exception:
-        print('%s %s much probably deleted, delete it (extid %s)' % (
-            etype, entity.eid, entity.cw_metainformation()['extid']))
-        todelete[etype].append(entity)
-        continue
-    print('get back', etype, entity.eid)
-    entity.cw_edited = EditedEntity(entity, **entity.cw_attr_cache)
-    if not entity.creation_date:
-        entity.cw_edited['creation_date'] = datetime.utcnow()
-    if not entity.modification_date:
-        entity.cw_edited['modification_date'] = datetime.utcnow()
-    if not entity.upassword:
-        entity.cw_edited['upassword'] = generate_password()
-    extid = entity.cw_metainformation()['extid']
-    if not entity.cwuri:
-        entity.cw_edited['cwuri'] = '%s/?dn=%s' % (
-            source.urls[0], extid.decode('utf-8', 'ignore'))
-    print(entity.cw_edited)
-    if extid in extids:
-        duplicates.append(extid)
-        continue
-    extids.add(extid)
-    system_source.add_entity(session, entity)
-    sql("UPDATE entities SET source='system' "
-        "WHERE eid=%(eid)s", {'eid': entity.eid})
-
-# only cleanup entities table, remaining stuff should be cleaned by a c-c
-# db-check to be run after this script
-if duplicates:
-    print('found %s duplicate entries' % len(duplicates))
-    from pprint import pprint
-    pprint(duplicates)
-
-print(len(todelete), 'entities will be deleted')
-for etype, entities in todelete.items():
-    print('deleting', etype, [e.login for e in entities])
-    system_source.delete_info_multi(session, entities, source_name)
-
-
-
-source_ent = rql('CWSource S WHERE S eid %(s)s', {'s': source.eid}).get_entity(0, 0)
-source_ent.cw_set(type=u"ldapfeed", parser=u"ldapfeed")
-
-
-if raw_input('Commit?') in 'yY':
-    print('committing')
-    commit()
-else:
-    rollback()
-    print('rolled back')

--- a/cubicweb/misc/scripts/pyroforge2datafeed.py	Fri Sep 30 18:24:17 2016 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,134 +0,0 @@
-"""turn a pyro source into a datafeed source
-
-Once this script is run, execute c-c db-check to cleanup relation tables.
-"""
-from __future__ import print_function
-
-import sys
-
-try:
-    source_name, = __args__
-    source = repo.sources_by_uri[source_name]
-except ValueError:
-    print('you should specify the source name as script argument (i.e. after --'
-          ' on the command line)')
-    sys.exit(1)
-except KeyError:
-    print('%s is not an active source' % source_name)
-    sys.exit(1)
-
-# check source is reachable before doing anything
-try:
-    source.get_connection()._repo
-except AttributeError:
-    print('%s is not reachable. Fix this before running this script' % source_name)
-    sys.exit(1)
-
-raw_input('Ensure you have shutdown all instances of this application before continuing.'
-          ' Type enter when ready.')
-
-system_source = repo.system_source
-
-from base64 import b64encode
-from cubicweb.server.edition import EditedEntity
-
-DONT_GET_BACK_ETYPES = set(( # XXX edit as desired
-        'State',
-        'RecipeStep', 'RecipeStepInput', 'RecipeStepOutput',
-        'RecipeTransition', 'RecipeTransitionCondition',
-        'NarvalConditionExpression', 'Recipe',
-        # XXX TestConfig
-        ))
-
-
-print('******************** backport entity content ***************************')
-
-from cubicweb.server import debugged
-todelete = {}
-host = source.config['base-url'].split('://')[1]
-for entity in rql('Any X WHERE X cw_source S, S eid %(s)s', {'s': source.eid}).entities():
-        etype = entity.cw_etype
-        if not source.support_entity(etype):
-            print("source doesn't support %s, delete %s" % (etype, entity.eid))
-        elif etype in DONT_GET_BACK_ETYPES:
-            print('ignore %s, delete %s' % (etype, entity.eid))
-        else:
-            try:
-                entity.complete()
-                if not host in entity.cwuri:
-                    print('SKIP foreign entity', entity.cwuri, source.config['base-url'])
-                    continue
-            except Exception:
-                print('%s %s much probably deleted, delete it (extid %s)' % (
-                    etype, entity.eid, entity.cw_metainformation()['extid']))
-            else:
-                print('get back', etype, entity.eid)
-                entity.cw_edited = EditedEntity(entity, **entity.cw_attr_cache)
-                system_source.add_entity(session, entity)
-                sql("UPDATE entities SET asource=%(asource)s, source='system', extid=%(extid)s "
-                    "WHERE eid=%(eid)s", {'asource': source_name,
-                                          'extid': b64encode(entity.cwuri),
-                                          'eid': entity.eid})
-                continue
-        todelete.setdefault(etype, []).append(entity)
-
-# only cleanup entities table, remaining stuff should be cleaned by a c-c
-# db-check to be run after this script
-for entities in todelete.values():
-    system_source.delete_info_multi(session, entities, source_name)
-
-
-print('******************** backport mapping **********************************')
-session.disable_hook_categories('cw.sources')
-mapping = []
-for mappart in rql('Any X,SCH WHERE X cw_schema SCH, X cw_for_source S, S eid %(s)s',
-                   {'s': source.eid}).entities():
-    schemaent = mappart.cw_schema[0]
-    if schemaent.cw_etype != 'CWEType':
-        assert schemaent.cw_etype == 'CWRType'
-        sch = schema._eid_index[schemaent.eid]
-        for rdef in sch.rdefs.values():
-            if not source.support_entity(rdef.subject) \
-                    or not source.support_entity(rdef.object):
-                continue
-            if rdef.subject in DONT_GET_BACK_ETYPES \
-                    and rdef.object in DONT_GET_BACK_ETYPES:
-                print('dont map', rdef)
-                continue
-            if rdef.subject in DONT_GET_BACK_ETYPES:
-                options = u'action=link\nlinkattr=name'
-                roles = 'object',
-            elif rdef.object in DONT_GET_BACK_ETYPES:
-                options = u'action=link\nlinkattr=name'
-                roles = 'subject',
-            else:
-                options = u'action=copy'
-                if rdef.rtype in ('use_environment',):
-                    roles = 'object',
-                else:
-                    roles = 'subject',
-            print('map', rdef, options, roles)
-            for role in roles:
-                mapping.append( (
-                        (str(rdef.subject), str(rdef.rtype), str(rdef.object)),
-                        options + '\nrole=%s' % role) )
-    mappart.cw_delete()
-
-source_ent = rql('CWSource S WHERE S eid %(s)s', {'s': source.eid}).get_entity(0, 0)
-source_ent.init_mapping(mapping)
-
-# change source properties
-config = u'''synchronize=yes
-synchronization-interval=10min
-delete-entities=no
-'''
-rql('SET X type "datafeed", X parser "cw.entityxml", X url %(url)s, X config %(config)s '
-    'WHERE X eid %(x)s',
-    {'x': source.eid, 'config': config,
-     'url': source.config['base-url']+'/project'})
-
-
-commit()
-
-from cubes.apycot import recipes
-recipes.create_quick_recipe(session)

--- a/cubicweb/server/repository.py	Fri Sep 30 18:24:17 2016 +0200
+++ b/cubicweb/server/repository.py	Wed Sep 28 22:17:36 2016 +0200
@@ -454,10 +454,10 @@
         # iter on sources_by_uri then check enabled source since sources doesn't
         # contain copy based sources
         for source in self.sources_by_uri.values():
-            if self.config.source_enabled(source) and source.support_entity('CWUser'):
+            if self.config.source_enabled(source):
                 try:
                     return source.authenticate(cnx, login, **authinfo)
-                except AuthenticationError:
+                except (NotImplementedError, AuthenticationError):
                     continue
         else:
             raise AuthenticationError('authentication failed with all sources')

--- a/cubicweb/server/sources/__init__.py	Fri Sep 30 18:24:17 2016 +0200
+++ b/cubicweb/server/sources/__init__.py	Wed Sep 28 22:17:36 2016 +0200
@@ -71,11 +71,6 @@
     # migration
     connect_for_migration = True
 
-    # mappings telling which entities and relations are available in the source
-    # keys are supported entity/relation types and values are boolean indicating
-    # wether the support is read-only (False) or read-write (True)
-    support_entities = {}
-    support_relations = {}
     # a global identifier for this source, which has to be set by the source
     # instance
     uri = None
@@ -101,7 +96,6 @@
     def __init__(self, repo, source_config, eid=None):
         self.repo = repo
         self.set_schema(repo.schema)
-        self.support_relations['identity'] = False
         self.eid = eid
         self.public_config = source_config.copy()
         self.public_config['use-cwuri-as-url'] = self.use_cwuri_as_url
@@ -264,44 +258,6 @@
 
     # external source api ######################################################
 
-    def support_entity(self, etype, write=False):
-        """return true if the given entity's type is handled by this adapter
-        if write is true, return true only if it's a RW support
-        """
-        try:
-            wsupport = self.support_entities[etype]
-        except KeyError:
-            return False
-        if write:
-            return wsupport
-        return True
-
-    def support_relation(self, rtype, write=False):
-        """return true if the given relation's type is handled by this adapter
-        if write is true, return true only if it's a RW support
-
-        current implementation return true if the relation is defined into
-        `support_relations` or if it is a final relation of a supported entity
-        type
-        """
-        try:
-            wsupport = self.support_relations[rtype]
-        except KeyError:
-            rschema = self.schema.rschema(rtype)
-            if not rschema.final or rschema.type == 'has_text':
-                return False
-            for etype in rschema.subjects():
-                try:
-                    wsupport = self.support_entities[etype]
-                    break
-                except KeyError:
-                    continue
-            else:
-                return False
-        if write:
-            return wsupport
-        return True
-
     def before_entity_insertion(self, cnx, lid, etype, eid, sourceparams):
         """called by the repository when an eid has been attributed for an
         entity stored here but the entity has not been inserted in the system

--- a/cubicweb/server/sources/native.py	Fri Sep 30 18:24:17 2016 +0200
+++ b/cubicweb/server/sources/native.py	Wed Sep 28 22:17:36 2016 +0200
@@ -505,22 +505,6 @@
             authentifier.set_schema(self.schema)
         clear_cache(self, 'need_fti_indexation')
 
-    def support_entity(self, etype, write=False):
-        """return true if the given entity's type is handled by this adapter
-        if write is true, return true only if it's a RW support
-        """
-        return etype not in NONSYSTEM_ETYPES
-
-    def support_relation(self, rtype, write=False):
-        """return true if the given relation's type is handled by this adapter
-        if write is true, return true only if it's a RW support
-        """
-        if write:
-            return rtype not in NONSYSTEM_RELATIONS
-        # due to current multi-sources implementation, the system source
-        # can't claim not supporting a relation
-        return True  #not rtype == 'content_for'
-
     @statsd_timeit
     def authenticate(self, cnx, login, **kwargs):
         """return CWUser eid for the given login and other authentication