01 /*
02 * Copyright 2008-2015 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core.storage;
17
18 import javax.annotation.Nonnull;
19 import javax.annotation.Nullable;
20 import java.util.Collection;
21
22 /**
23 * @author Andres Almiray
24 * @since 2.0.0
25 */
26 public interface ObjectStorage<T> {
27 @Nonnull
28 String[] getKeys();
29
30 @Nonnull
31 Collection<T> getValues();
32
33 @Nullable
34 T get(@Nonnull String key);
35
36 @Nullable
37 T remove(@Nonnull String key);
38
39 void set(@Nonnull String key, @Nonnull T instance);
40
41 boolean contains(@Nonnull String key);
42 }
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