+
−from __future__ import print_function
+
−
+
−from cubicweb.schema import PURE_VIRTUAL_RTYPES
+
−from cubicweb.server.schema2sql import rschema_has_table
+
−
+
−
+
−def add_foreign_keys():
+
−    source = repo.system_source
+
−    if not source.dbhelper.alter_column_support:
+
−        return
+
−    for rschema in schema.relations():
+
−        if rschema.inlined:
+
−            add_foreign_keys_inlined(rschema)
+
−        elif rschema_has_table(rschema, skip_relations=PURE_VIRTUAL_RTYPES):
+
−            add_foreign_keys_relation(rschema)
+
−    for eschema in schema.entities():
+
−        if eschema.final:
+
−            continue
+
−        add_foreign_key_etype(eschema)
+
−
+
−
+
−def add_foreign_keys_relation(rschema):
+
−    args = {'r': rschema.type}
+
−    count = sql('SELECT COUNT(*) FROM ('
+
−                '    SELECT eid_from FROM %(r)s_relation'
+
−                '  UNION'
+
−                '    SELECT eid_to FROM %(r)s_relation'
+
−                '  EXCEPT'
+
−                '    SELECT eid FROM entities) AS eids' % args,
+
−                ask_confirm=False)[0][0]
+
−    if count:
+
−        print('%s references %d unknown entities, deleting' % (rschema, count))
+
−        sql('DELETE FROM %(r)s_relation '
+
−            'WHERE eid_from IN (SELECT eid_from FROM %(r)s_relation EXCEPT SELECT eid FROM entities)' % args)
+
−        sql('DELETE FROM %(r)s_relation '
+
−            'WHERE eid_to IN (SELECT eid_to FROM %(r)s_relation EXCEPT SELECT eid FROM entities)' % args)
+
−
+
−    args['from_fk'] = '%(r)s_relation_eid_from_fkey' % args
+
−    args['to_fk'] = '%(r)s_relation_eid_to_fkey' % args
+
−    args['table'] = '%(r)s_relation' % args
+
−    if repo.system_source.dbdriver == 'postgres':
+
−        sql('ALTER TABLE %(table)s DROP CONSTRAINT IF EXISTS %(from_fk)s' % args,
+
−            ask_confirm=False)
+
−        sql('ALTER TABLE %(table)s DROP CONSTRAINT IF EXISTS %(to_fk)s' % args,
+
−            ask_confirm=False)
+
−    elif repo.system_source.dbdriver.startswith('sqlserver'):
+
−        sql("IF OBJECT_ID('%(from_fk)s', 'F') IS NOT NULL "
+
−            "ALTER TABLE %(table)s DROP CONSTRAINT %(from_fk)s" % args,
+
−            ask_confirm=False)
+
−        sql("IF OBJECT_ID('%(to_fk)s', 'F') IS NOT NULL "
+
−            "ALTER TABLE %(table)s DROP CONSTRAINT %(to_fk)s" % args,
+
−            ask_confirm=False)
+
−    sql('ALTER TABLE %(table)s ADD CONSTRAINT %(from_fk)s '
+
−        'FOREIGN KEY (eid_from) REFERENCES entities (eid)' % args,
+
−        ask_confirm=False)
+
−    sql('ALTER TABLE %(table)s ADD CONSTRAINT %(to_fk)s '
+
−        'FOREIGN KEY (eid_to) REFERENCES entities (eid)' % args,
+
−        ask_confirm=False)
+
−
+
−
+
−def add_foreign_keys_inlined(rschema):
+
−    for eschema in rschema.subjects():
+
−        args = {'e': eschema.type, 'r': rschema.type}
+
−        args['c'] = 'cw_%(e)s_cw_%(r)s_fkey' % args
+
−
+
−        if eschema.rdef(rschema).cardinality[0] == '1':
+
−            broken_eids = sql('SELECT cw_eid FROM cw_%(e)s WHERE cw_%(r)s IS NULL' % args,
+
−                              ask_confirm=False)
+
−            if broken_eids:
+
−                print('Required relation %(e)s.%(r)s missing' % args)
+
−                args['eids'] = ', '.join(str(eid) for eid, in broken_eids)
+
−                rql('DELETE %(e)s X WHERE X eid IN (%(eids)s)' % args)
+
−            broken_eids = sql('SELECT cw_eid FROM cw_%(e)s WHERE cw_%(r)s IN (SELECT cw_%(r)s FROM cw_%(e)s '
+
−                              'EXCEPT SELECT eid FROM entities)' % args,
+
−                              ask_confirm=False)
+
−            if broken_eids:
+
−                print('Required relation %(e)s.%(r)s references unknown objects, deleting subject entities' % args)
+
−                args['eids'] = ', '.join(str(eid) for eid, in broken_eids)
+
−                rql('DELETE %(e)s X WHERE X eid IN (%(eids)s)' % args)
+
−        else:
+
−            if sql('SELECT COUNT(*) FROM ('
+
−                   '    SELECT cw_%(r)s FROM cw_%(e)s WHERE cw_%(r)s IS NOT NULL'
+
−                   '  EXCEPT'
+
−                   '    SELECT eid FROM entities) AS eids' % args,
+
−                   ask_confirm=False)[0][0]:
+
−                print('%(e)s.%(r)s references unknown entities, deleting relation' % args)
+
−                sql('UPDATE cw_%(e)s SET cw_%(r)s = NULL WHERE cw_%(r)s IS NOT NULL AND cw_%(r)s IN '
+
−                    '(SELECT cw_%(r)s FROM cw_%(e)s EXCEPT SELECT eid FROM entities)' % args)
+
−
+
−        if repo.system_source.dbdriver == 'postgres':
+
−            sql('ALTER TABLE cw_%(e)s DROP CONSTRAINT IF EXISTS %(c)s' % args,
+
−                ask_confirm=False)
+
−        elif repo.system_source.dbdriver.startswith('sqlserver'):
+
−            sql("IF OBJECT_ID('%(c)s', 'F') IS NOT NULL "
+
−                "ALTER TABLE cw_%(e)s DROP CONSTRAINT %(c)s" % args,
+
−                ask_confirm=False)
+
−        sql('ALTER TABLE cw_%(e)s ADD CONSTRAINT %(c)s '
+
−            'FOREIGN KEY (cw_%(r)s) references entities(eid)' % args,
+
−            ask_confirm=False)
+
−
+
−
+
−def add_foreign_key_etype(eschema):
+
−    args = {'e': eschema.type}
+
−    if sql('SELECT COUNT(*) FROM ('
+
−           '    SELECT cw_eid FROM cw_%(e)s'
+
−           '  EXCEPT'
+
−           '    SELECT eid FROM entities) AS eids' % args,
+
−           ask_confirm=False)[0][0]:
+
−        print('%(e)s has nonexistent entities, deleting' % args)
+
−        sql('DELETE FROM cw_%(e)s WHERE cw_eid IN '
+
−            '(SELECT cw_eid FROM cw_%(e)s EXCEPT SELECT eid FROM entities)' % args)
+
−    args['c'] = 'cw_%(e)s_cw_eid_fkey' % args
+
−    if repo.system_source.dbdriver == 'postgres':
+
−        sql('ALTER TABLE cw_%(e)s DROP CONSTRAINT IF EXISTS %(c)s' % args,
+
−            ask_confirm=False)
+
−    elif repo.system_source.dbdriver.startswith('sqlserver'):
+
−        sql("IF OBJECT_ID('%(c)s', 'F') IS NOT NULL "
+
−            "ALTER TABLE cw_%(e)s DROP CONSTRAINT %(c)s" % args,
+
−            ask_confirm=False)
+
−    sql('ALTER TABLE cw_%(e)s ADD CONSTRAINT %(c)s '
+
−        'FOREIGN KEY (cw_eid) REFERENCES entities (eid)' % args,
+
−        ask_confirm=False)
+
−
+
−
+
−add_foreign_keys()
+
−
+
−cu = session.cnxset.cu
+
−helper = repo.system_source.dbhelper
+
−
+
−helper.drop_index(cu, 'entities', 'extid', False)
+
−# don't use create_index because it doesn't work for columns that may be NULL
+
−# on sqlserver
+
−for query in helper.sqls_create_multicol_unique_index('entities', ['extid']):
+
−    cu.execute(query)
+
−
+
−if 'moved_entities' not in helper.list_tables(cu):
+
−    sql('''
+
−    CREATE TABLE moved_entities (
+
−      eid INTEGER PRIMARY KEY NOT NULL,
+
−      extid VARCHAR(256) UNIQUE
+
−    )
+
−    ''')
+
−
+
−moved_entities = sql('SELECT -eid, extid FROM entities WHERE eid < 0',
+
−                     ask_confirm=False)
+
−if moved_entities:
+
−    cu.executemany('INSERT INTO moved_entities (eid, extid) VALUES (%s, %s)',
+
−                   moved_entities)
+
−    sql('DELETE FROM entities WHERE eid < 0')
+
−
+
−commit()
+
−
+
−sync_schema_props_perms('CWEType')
+
−
+
−sync_schema_props_perms('cwuri')
+
−
+
−from cubicweb.server.schema2sql import check_constraint
+
−
+
−for cwconstraint in rql('Any C WHERE R constrained_by C').entities():
+
−    cwrdef = cwconstraint.reverse_constrained_by[0]
+
−    rdef = cwrdef.yams_schema()
+
−    cstr = rdef.constraint_by_eid(cwconstraint.eid)
+
−    if cstr.type() not in ('BoundaryConstraint', 'IntervalBoundConstraint', 'StaticVocabularyConstraint'):
+
−        continue
+
−    cstrname, check = check_constraint(rdef.subject, rdef.object, rdef.rtype.type,
+
−            cstr, helper, prefix='cw_')
+
−    args = {'e': rdef.subject.type, 'c': cstrname, 'v': check}
+
−    if repo.system_source.dbdriver == 'postgres':
+
−        sql('ALTER TABLE cw_%(e)s DROP CONSTRAINT IF EXISTS %(c)s' % args)
+
−    elif repo.system_source.dbdriver.startswith('sqlserver'):
+
−        sql("IF OBJECT_ID('%(c)s', 'C') IS NOT NULL "
+
−            "ALTER TABLE cw_%(e)s DROP CONSTRAINT %(c)s" % args)
+
−    sql('ALTER TABLE cw_%(e)s ADD CONSTRAINT %(c)s CHECK(%(v)s)' % args)
+
−commit()