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 org.codehaus.griffon.runtime.core;
17
18 import griffon.core.Context;
19
20 import javax.annotation.Nonnull;
21 import javax.annotation.Nullable;
22 import java.util.HashSet;
23 import java.util.Map;
24 import java.util.Set;
25 import java.util.concurrent.ConcurrentHashMap;
26
27 import static griffon.util.GriffonNameUtils.requireNonBlank;
28
29 /**
30 * @author Andres Almiray
31 * @since 2.2.0
32 */
33 public class DefaultContext extends AbstractContext {
34 protected static final String ERROR_KEY_BLANK = "Argument 'key' must not be blank";
35 private final Map<String, Object> attributes = new ConcurrentHashMap<>();
36
37 public DefaultContext() {
38 this(null);
39 }
40
41 public DefaultContext(@Nullable Context parentContext) {
42 super(parentContext);
43 }
44
45 @Nullable
46 @Override
47 protected Object doGet(@Nonnull String key) {
48 requireNonBlank(key, ERROR_KEY_BLANK);
49 return attributes.get(key);
50 }
51
52 @Override
53 public boolean hasKey(@Nonnull String key) {
54 requireNonBlank(key, ERROR_KEY_BLANK);
55 return attributes.containsKey(key);
56 }
57
58 @Nullable
59 @Override
60 public Object remove(@Nonnull String key) {
61 requireNonBlank(key, ERROR_KEY_BLANK);
62 return attributes.remove(key);
63 }
64
65 @Override
66 public void put(@Nonnull String key, @Nullable Object value) {
67 requireNonBlank(key, ERROR_KEY_BLANK);
68 attributes.put(key, value);
69 }
70
71 @Override
72 public void putAt(@Nonnull String key, @Nullable Object value) {
73 put(key, value);
74 }
75
76 @Override
77 public void destroy() {
78 attributes.clear();
79 super.destroy();
80 }
81
82 @Nonnull
83 @Override
84 public Set<String> keySet() {
85 Set<String> keys = new HashSet<>(attributes.keySet());
86 if (parentContext != null) {
87 keys.addAll(parentContext.keySet());
88 }
89 return keys;
90 }
91 }
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