mv com/google/domain/registry google/registry

This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.

java/google/registry/model/JsonMapBuilder.java

@@ -0,0 +1,91 @@
+// Copyright 2016 The Domain Registry 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 com.google.domain.registry.model;
+
+import com.google.common.base.Function;
+import com.google.common.base.Functions;
+import com.google.common.collect.FluentIterable;
+
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import javax.annotation.Nullable;
+
+/**
+ * Helper class for {@link Jsonifiable} classes to generate JSON maps for RPC responses.
+ *
+ * <p>The returned map is mutable. Map entries can be {@code null} but list entries can not. If a
+ * list is passed as {@code null}, it'll be substituted with empty list. Lists are not mutable.
+ */
+public final class JsonMapBuilder {
+
+  private static final Function<Jsonifiable, Map<String, Object>> TO_JSON_OBJECT =
+      new Function<Jsonifiable, Map<String, Object>>() {
+        @Override
+        public Map<String, Object> apply(Jsonifiable input) {
+          return input.toJsonMap();
+        }};
+
+  private final Map<String, Object> map = new LinkedHashMap<>();
+
+  public JsonMapBuilder put(String name, @Nullable Boolean value) {
+    map.put(name, value);
+    return this;
+  }
+
+  public JsonMapBuilder put(String name, @Nullable Number value) {
+    map.put(name, value);
+    return this;
+  }
+
+  public JsonMapBuilder put(String name, @Nullable String value) {
+    map.put(name, value);
+    return this;
+  }
+
+  public JsonMapBuilder put(String name, @Nullable Jsonifiable value) {
+    map.put(name, value == null ? null : value.toJsonMap());
+    return this;
+  }
+
+  public JsonMapBuilder put(String name, @Nullable Enum<?> value) {
+    map.put(name, value == null ? null : value.name());
+    return this;
+  }
+
+  public <T> JsonMapBuilder putString(String name, @Nullable T value) {
+    map.put(name, value == null ? null : value.toString());
+    return this;
+  }
+
+  public <T> JsonMapBuilder putListOfStrings(String name, @Nullable Iterable<T> value) {
+    map.put(name, value == null ? Collections.EMPTY_LIST
+        : FluentIterable.from(value).transform(Functions.toStringFunction()).toList());
+    return this;
+  }
+
+  public JsonMapBuilder putListOfJsonObjects(
+      String name, @Nullable Iterable<? extends Jsonifiable> value) {
+    map.put(name, value == null ? Collections.EMPTY_LIST
+        : FluentIterable.from(value).transform(TO_JSON_OBJECT).toList());
+    return this;
+  }
+
+  /** Returns mutable JSON object. Please dispose of the builder object after calling me. */
+  public Map<String, Object> build() {
+    return map;
+  }
+}