ZSQLCatalog: Stop hiding possible duplicates in z_getitem_by_{path,uid}

LIMIT hides duplicates. We want to know if we ever violate the
soft-constraint of path unicity in catalog, so stop setting a LIMIT.
Also, for uid lookup, LIMIT is meaningless as this is ha hard unicity
constraint (must be enforced by relational database for ERP5 to work).

Also, simplify both the DTML and the SQL by having fewer ways to be
invoked (backward-compatible).

product/ERP5/bootstrap/erp5_mysql_innodb_catalog/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_getitem_by_path.sql

-SELECT <dtml-if uid_only>uid<dtml-else>uid,path</dtml-if> from catalog 
-WHERE 
-<dtml-if path_list>
-  path IN (<dtml-in path_list><dtml-sqlvar sequence-item type="string">
-           <dtml-if sequence-end><dtml-else>,</dtml-if></dtml-in>)
-  LIMIT <dtml-sqlvar expr="len(path_list)" type="int">
-<dtml-else>
-  <dtml-sqltest path op=eq type="string">
-  LIMIT 1
-</dtml-if>
+SELECT uid, path FROM catalog WHERE <dtml-sqltest column="path" expr="path_list" op=eq type="string" multiple>

product/ERP5/bootstrap/erp5_mysql_innodb_catalog/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_getitem_by_path.xml

@@ -14,9 +14,7 @@
         </item>
         <item>
             <key> <string>arguments_src</string> </key>
-            <value> <string>path\r\n
-path_list\r\n
-uid_only</string> </value>
+            <value> <string>path_list</string> </value>
         </item>
         <item>
             <key> <string>cache_time_</string> </key>

product/ERP5/bootstrap/erp5_mysql_innodb_catalog/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_getitem_by_uid.sql

-SELECT <dtml-if path_only>path<dtml-else>uid,path</dtml-if> from catalog 
-WHERE 
-<dtml-if uid_list>
-  uid IN (<dtml-in uid_list><dtml-sqlvar sequence-item type="int">
-          <dtml-if sequence-end><dtml-else>,</dtml-if></dtml-in>)
-  LIMIT <dtml-sqlvar expr="len(uid_list)" type="int">
-<dtml-else>
-  <dtml-sqltest uid op=eq type="int">
-  LIMIT 1
-</dtml-if>
+SELECT uid, path FROM catalog WHERE <dtml-sqltest column="uid" expr="uid_list" op=eq type="int" multiple>

product/ERP5/bootstrap/erp5_mysql_innodb_catalog/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/z_getitem_by_uid.xml

@@ -14,9 +14,7 @@
         </item>
         <item>
             <key> <string>arguments_src</string> </key>
-            <value> <string>uid\r\n
-uid_list\r\n
-path_only</string> </value>
+            <value> <string>uid_list</string> </value>
         </item>
         <item>
             <key> <string>cache_time_</string> </key>

product/ZSQLCatalog/SQLCatalog.py

@@ -886,11 +886,11 @@ class Catalog(Folder,
     # It could also have a performance impact for traversals to objects in
     # the acquisition context on Zope 2.12 even when it didn't raise a weird
     # error.
-    method = self._getOb(self.getSqlGetitemByUid())
-    search_result = method(uid = uid)
-    if len(search_result) > 0:
-      return search_result[0]
-    raise KeyError, uid
+    search_result = self._getOb(self.getSqlGetitemByUid())(uid_list=[uid])
+    if search_result:
+      result, = search_result
+      return result
+    raise KeyError(uid)
 
   security.declarePrivate('editSchema')
   def editSchema(self, names_list):
@@ -1369,7 +1369,7 @@ class Catalog(Folder,
           # exceptional case.
           error_message = 'uid %r is shared between %r (catalog) and %r (being indexed) ! This can break relations' % (
             uid,
-            uid_path_dict[uid],
+            catalog_path,
             path,
           )
           if self.sql_catalog_raise_error_on_uid_check:
@@ -1605,9 +1605,9 @@ class Catalog(Folder,
       for x in self._getOb(
         self.getSqlGetitemByPath()
       )(
-        path=None,
+        path=None, # BBB
         path_list=path_list,
-        uid_only=False,
+        uid_only=False, # BBB
       )
     }
 
@@ -1619,9 +1619,9 @@ class Catalog(Folder,
       for x in self._getOb(
         self.getSqlGetitemByUid()
       )(
-        uid=None,
+        uid=None, # BBB
         uid_list=uid_list,
-        path_only=False,
+        path_only=False, # BBB
       )
     }
 

product/ZSQLCatalog/tests/testZSQLCatalog.py

@@ -58,7 +58,7 @@ class TestSQLCatalog(unittest.TestCase):
     # test that our method actually gets called while looking records up by
     # uid by raising our own exception
     self._catalog.sql_getitem_by_uid = 'z_dummy_lookup_method'
-    def z_dummy_lookup_method(uid):
+    def z_dummy_lookup_method(uid_list):
       raise MyError('foo')
     self._catalog.z_dummy_lookup_method = z_dummy_lookup_method
     self.assertRaises(MyError, self._catalog.getRecordForUid, 1)