Add type converter for Key<ReservedList> and Key<PremiumList> (#796)

* Add converter for reservedlist and premiumlist keys

* Remove public modifier from test classes

core/src/main/java/google/registry/persistence/converter/PremiumListKeyConverter.java

@@ -0,0 +1,37 @@
+// 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.
+
+package google.registry.persistence.converter;
+
+import static google.registry.model.common.EntityGroupRoot.getCrossTldKey;
+
+import com.googlecode.objectify.Key;
+import google.registry.model.registry.label.PremiumList;
+import javax.persistence.AttributeConverter;
+import javax.persistence.Converter;
+
+/** JPA converter for a {@link Key} containing a {@link PremiumList} */
+@Converter(autoApply = true)
+public class PremiumListKeyConverter implements AttributeConverter<Key<PremiumList>, String> {
+
+  @Override
+  public String convertToDatabaseColumn(Key<PremiumList> attribute) {
+    return (attribute == null) ? null : attribute.getName();
+  }
+
+  @Override
+  public Key<PremiumList> convertToEntityAttribute(String dbData) {
+    return (dbData == null) ? null : Key.create(getCrossTldKey(), PremiumList.class, dbData);
+  }
+}

core/src/main/java/google/registry/persistence/converter/ReservedListKeyConverter.java

@@ -0,0 +1,37 @@
+// 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.
+
+package google.registry.persistence.converter;
+
+import static google.registry.model.common.EntityGroupRoot.getCrossTldKey;
+
+import com.googlecode.objectify.Key;
+import google.registry.model.registry.label.ReservedList;
+import javax.persistence.AttributeConverter;
+import javax.persistence.Converter;
+
+/** JPA converter for a {@link Key} containing a {@link ReservedList} */
+@Converter(autoApply = true)
+public class ReservedListKeyConverter implements AttributeConverter<Key<ReservedList>, String> {
+
+  @Override
+  public String convertToDatabaseColumn(Key<ReservedList> attribute) {
+    return (attribute == null) ? null : attribute.getName();
+  }
+
+  @Override
+  public Key<ReservedList> convertToEntityAttribute(String dbData) {
+    return (dbData == null) ? null : Key.create(getCrossTldKey(), ReservedList.class, dbData);
+  }
+}

core/src/main/resources/META-INF/persistence.xml

@@ -79,7 +79,9 @@
     <class>google.registry.persistence.converter.InetAddressSetConverter</class>
     <class>google.registry.persistence.converter.LocalDateConverter</class>
     <class>google.registry.persistence.converter.PostalInfoChoiceListConverter</class>
+    <class>google.registry.persistence.converter.PremiumListKeyConverter</class>
     <class>google.registry.persistence.converter.RegistrarPocSetConverter</class>
+    <class>google.registry.persistence.converter.ReservedListKeyConverter</class>
     <class>google.registry.persistence.converter.Spec11ThreatMatchThreatTypeSetConverter</class>
     <class>google.registry.persistence.converter.StatusValueSetConverter</class>
     <class>google.registry.persistence.converter.StringListConverter</class>