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35 lines
1.3 KiB
Java
35 lines
1.3 KiB
Java
// Copyright 2016 The Nomulus 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.util;
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import com.google.appengine.api.datastore.Key;
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import com.google.common.base.Function;
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import com.google.common.base.Optional;
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/** Utility methods for working with the AppEngine datastore service. */
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public class DatastoreServiceUtils {
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/** Helper function that extracts the kind from a regular datastore entity key. */
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public static final Function<Key, String> KEY_TO_KIND_FUNCTION = new Function<Key, String>() {
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@Override
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public String apply(Key key) {
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return key.getKind();
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}};
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/** Returns the name or id of a key, which may be a string or a long. */
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public static Object getNameOrId(Key key) {
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return Optional.<Object>fromNullable(key.getName()).or(key.getId());
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}
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}
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