Refactor RDE import stuff into its own rde.imports package

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=141566236

java/google/registry/rde/imports/XjcToEppResourceConverter.java

@@ -0,0 +1,63 @@
+// Copyright 2016 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.rde.imports;
+
+import com.google.common.base.Joiner;
+import google.registry.model.EppResource;
+import java.io.ByteArrayOutputStream;
+import java.util.Arrays;
+import javax.xml.bind.JAXBContext;
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.JAXBException;
+import javax.xml.bind.Marshaller;
+
+/**
+ * Base class for Jaxb object to {@link EppResource} converters
+ */
+public abstract class XjcToEppResourceConverter {
+
+  /** List of packages to initialize JAXBContext. **/
+  private static final String JAXB_CONTEXT_PACKAGES = Joiner.on(":")
+      .join(Arrays.asList(
+          "google.registry.xjc.contact",
+          "google.registry.xjc.domain",
+          "google.registry.xjc.host",
+          "google.registry.xjc.mark",
+          "google.registry.xjc.rde",
+          "google.registry.xjc.rdecontact",
+          "google.registry.xjc.rdedomain",
+          "google.registry.xjc.rdeeppparams",
+          "google.registry.xjc.rdeheader",
+          "google.registry.xjc.rdeidn",
+          "google.registry.xjc.rdenndn",
+          "google.registry.xjc.rderegistrar",
+          "google.registry.xjc.smd"));
+
+  /** Creates a {@link Marshaller} for serializing Jaxb objects */
+  private static Marshaller createMarshaller() throws JAXBException {
+    return JAXBContext.newInstance(JAXB_CONTEXT_PACKAGES).createMarshaller();
+  }
+
+  protected static byte[] getObjectXml(JAXBElement<?> jaxbElement) {
+    try {
+      Marshaller marshaller = createMarshaller();
+      ByteArrayOutputStream bout = new ByteArrayOutputStream();
+      marshaller.marshal(jaxbElement, bout);
+      return bout.toByteArray();
+    } catch (JAXBException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}