Import code from internal repository to git

java/com/google/domain/registry/rde/RdeAdapter.java

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+// Copyright 2016 Google Inc. 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 com.google.domain.registry.rde;
+
+import static com.google.common.base.Strings.emptyToNull;
+import static com.google.common.base.Strings.isNullOrEmpty;
+
+import com.google.domain.registry.xjc.rde.XjcRdeRrType;
+
+import javax.annotation.CheckForNull;
+import javax.annotation.Nullable;
+
+/** Utility class that converts database objects to RDE XML objects. */
+final class RdeAdapter {
+
+  /** Create {@link XjcRdeRrType} with optional {@code client} attribute. */
+  @Nullable
+  @CheckForNull
+  static XjcRdeRrType convertRr(@Nullable String value, @Nullable String client) {
+    if (isNullOrEmpty(value)) {
+      return null;
+    }
+    XjcRdeRrType rrType = new XjcRdeRrType();
+    rrType.setValue(value);
+    rrType.setClient(emptyToNull(client));
+    return rrType;
+  }
+}