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9a2afc7a9b
ReferenceUnion is a hack to work around the mismatch between how we store references (by roid) and how they are represented in EPP (by foreign key). If it ever needed to exist (not entirely clear...) it should have remained tightly scoped within the domain commands and resources. Instead it has leaked everywhere in the project, causing lots of boilerplate. This CL hides all of that behind standard Refs, and should be followed by work to remove ReferenceUnion completely. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=122424416
72 lines
2.4 KiB
Java
72 lines
2.4 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.model.domain;
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import com.googlecode.objectify.Ref;
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import com.googlecode.objectify.annotation.Embed;
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import com.googlecode.objectify.annotation.Index;
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import google.registry.model.EppResource;
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import google.registry.model.ImmutableObject;
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import google.registry.model.contact.ContactResource;
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import google.registry.model.host.HostResource;
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import javax.xml.bind.annotation.adapters.XmlAdapter;
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/**
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* Legacy shell of a "union" type to represent referenced objects as either a foreign key or as a
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* link to another object in the datastore. In its current form it merely wraps a {@link Ref}.
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* <p>
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* This type always marshals as the "foreign key". We no longer use this type for unmarshalling.
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*
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* @param <T> the type being referenced
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*/
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@Embed
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public class ReferenceUnion<T extends EppResource> extends ImmutableObject {
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@Index
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Ref<T> linked;
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public Ref<T> getLinked() {
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return linked;
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}
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/** An adapter that marshals the linked {@link Ref} as its loaded foreign key. */
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public static class Adapter<T extends EppResource>
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extends XmlAdapter<String, ReferenceUnion<T>> {
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@Override
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public ReferenceUnion<T> unmarshal(String foreignKey) throws Exception {
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throw new UnsupportedOperationException();
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}
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@Override
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public String marshal(ReferenceUnion<T> reference) throws Exception {
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return reference.getLinked().get().getForeignKey();
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}
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}
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/** An adapter for references to contacts. */
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static class ContactReferenceUnionAdapter extends Adapter<ContactResource>{}
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/** An adapter for references to hosts. */
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static class HostReferenceUnionAdapter extends Adapter<HostResource>{}
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public static <T extends EppResource> ReferenceUnion<T> create(Ref<T> linked) {
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ReferenceUnion<T> instance = new ReferenceUnion<>();
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instance.linked = linked;
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return instance;
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}
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}
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