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/util/PredicateUtils.java

@@ -0,0 +1,45 @@
+// 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.util;
+
+import com.google.common.base.Predicate;
+
+/** Utility class containing {@link Predicate} methods. */
+public class PredicateUtils {
+
+  /**
+   * A predicate for a given class X that checks if tested classes are supertypes of X.
+   *
+   * <p>We need our own predicate because Guava's class predicates are backwards.
+   * @see "https://github.com/google/guava/issues/1444"
+   */
+  private static class SupertypeOfPredicate implements Predicate<Class<?>> {
+
+    private final Class<?> subClass;
+
+    SupertypeOfPredicate(Class<?> subClass) {
+      this.subClass = subClass;
+    }
+
+    @Override
+    public boolean apply(Class<?> superClass) {
+      return superClass.isAssignableFrom(subClass);
+    }
+  }
+
+  public static Predicate<Class<?>> supertypeOf(Class<?> subClass) {
+    return new SupertypeOfPredicate(subClass);
+  }
+}