- alternative fix

CHANGES.rst

@@ -4,6 +4,9 @@ Changelog
 3.0.9 (unreleased)
 ------------------
 
+- fix ImportError under Zope 5 due to moved dependencies
+  (`#19 <https://github.com/zopefoundation/Products.ZSQLMethods/pull/19>`_)
+
 
 3.0.8 (2019-08-05)
 ------------------

src/Shared/DC/ZRDB/DA.py

@@ -50,6 +50,30 @@
 from .sqlvar import SQLVar
 
 
+try:
+    from OFS import bbb
+except ImportError:
+    bbb = None
+
+
+if bbb is not None and bbb.HAS_ZSERVER:
+    from webdav.Resource import Resource
+    from webdav.Lockable import ResourceLockedError
+else:
+    from zExceptions import ResourceLockedError
+
+    class Resource:
+        def dav__init(self, request, response):
+            pass
+
+        def dav__validate(self, object, methodname, REQUEST):
+            pass
+
+        def dav__simpleifhandler(self, request, response, method='PUT',
+                                 col=0, url=None, refresh=0):
+            pass
+
+
 def _getPath(home, prefix, name, suffixes):
 
     dir = os.path.join(home, prefix)
@@ -294,6 +318,9 @@ def manage_edit(self, title, connection_id, arguments, template,
             return self._er(title, connection_id, arguments, template,
                             SUBMIT, dtpref_cols, dtpref_rows, REQUEST)
 
+        if self.wl_isLocked():
+            raise ResourceLockedError('SQL Method is locked via WebDAV')
+
         self.title = str(title)
         self.connection_id = str(connection_id)
         arguments = str(arguments)