Use TransactionManager APIs in DatastoreHelper (#849)

* Make DatastoreHelper support Postgresql

* Rebase on HEAD

* Resolve comments

* Use put* inside insert* and update*

* Resolve comments

db/src/main/resources/sql/er_diagram/brief_er_diagram.html

@@ -261,11 +261,11 @@ td.section {
     </tr> 
     <tr> 
      <td class="property_name">generated on</td> 
-     <td class="property_value">2020-10-26 15:49:09.291097</td> 
+     <td class="property_value">2020-10-26 18:19:17.415062</td> 
     </tr> 
     <tr>
      <td class="property_name">last flyway file</td>
-     <td id="lastFlywayFile" class="property_value">V67__grace_period_history_ids.sql</td>
+     <td id="lastFlywayFile" class="property_value">V68__make_reserved_list_nullable_in_registry.sql</td>
     </tr>
    </tbody>
   </table> 
@@ -284,7 +284,7 @@ td.section {
      generated on
     </text> 
     <text text-anchor="start" x="3310.05" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">
-     2020-10-26 15:49:09.291097
+     2020-10-26 18:19:17.415062
     </text> 
     <polygon fill="none" stroke="#888888" points="3222.55,-4 3222.55,-44 3487.55,-44 3487.55,-4 3222.55,-4" /> <!-- allocationtoken_a08ccbef --> 
     <g id="node1" class="node"> 

db/src/main/resources/sql/er_diagram/full_er_diagram.html

@@ -261,11 +261,11 @@ td.section {
     </tr> 
     <tr> 
      <td class="property_name">generated on</td> 
-     <td class="property_value">2020-10-26 15:49:07.386754</td> 
+     <td class="property_value">2020-10-26 18:19:15.617359</td> 
     </tr> 
     <tr>
      <td class="property_name">last flyway file</td>
-     <td id="lastFlywayFile" class="property_value">V67__grace_period_history_ids.sql</td>
+     <td id="lastFlywayFile" class="property_value">V68__make_reserved_list_nullable_in_registry.sql</td>
     </tr>
    </tbody>
   </table> 
@@ -284,7 +284,7 @@ td.section {
      generated on
     </text> 
     <text text-anchor="start" x="3735.5" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">
-     2020-10-26 15:49:07.386754
+     2020-10-26 18:19:15.617359
     </text> 
     <polygon fill="none" stroke="#888888" points="3648,-4 3648,-44 3913,-44 3913,-4 3648,-4" /> <!-- allocationtoken_a08ccbef --> 
     <g id="node1" class="node"> 
@@ -5600,7 +5600,7 @@ td.section {
      <text text-anchor="start" x="3780.5" y="-6672.4" font-family="Helvetica,sans-Serif" font-size="14.00"> 
      </text> 
      <text text-anchor="start" x="3788.5" y="-6672.4" font-family="Helvetica,sans-Serif" font-size="14.00">
-      _text not null
+      _text
      </text> 
      <text text-anchor="start" x="3509.5" y="-6653.4" font-family="Helvetica,sans-Serif" font-size="14.00">
       restore_billing_cost_amount
@@ -11740,7 +11740,7 @@ td.section {
     <tr> 
      <td class="spacer"></td> 
      <td class="minwidth">reserved_list_names</td> 
-     <td class="minwidth">_text not null</td> 
+     <td class="minwidth">_text</td> 
     </tr> 
     <tr> 
      <td class="spacer"></td> 

db/src/main/resources/sql/flyway.txt

@@ -65,3 +65,4 @@ V64__transfer_history_columns.sql
 V65__local_date_date_type.sql
 V66__create_rde_revision.sql
 V67__grace_period_history_ids.sql
+V68__make_reserved_list_nullable_in_registry.sql

db/src/main/resources/sql/flyway/V68__make_reserved_list_nullable_in_registry.sql

@@ -0,0 +1,15 @@
+-- Copyright 2020 The Nomulus Authors. All Rights Reserved.
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+ALTER TABLE "Tld" ALTER COLUMN reserved_list_names DROP NOT NULL;

db/src/main/resources/sql/schema/db-schema.sql.generated

@@ -646,7 +646,7 @@
         registry_lock_or_unlock_cost_currency text,
         renew_billing_cost_transitions hstore not null,
         renew_grace_period_length interval not null,
-        reserved_list_names text[] not null,
+        reserved_list_names text[],
         restore_billing_cost_amount numeric(19, 2),
         restore_billing_cost_currency text,
         roid_suffix text,

db/src/main/resources/sql/schema/nomulus.golden.sql

@@ -904,7 +904,7 @@ CREATE TABLE public."Tld" (
     registry_lock_or_unlock_cost_currency text,
     renew_billing_cost_transitions public.hstore NOT NULL,
     renew_grace_period_length interval NOT NULL,
-    reserved_list_names text[] NOT NULL,
+    reserved_list_names text[],
     restore_billing_cost_amount numeric(19,2),
     restore_billing_cost_currency text,
     roid_suffix text,