01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.codehaus.griffon.runtime.core.storage;
19
20
21 import griffon.core.Configuration;
22 import griffon.core.GriffonApplication;
23 import griffon.core.storage.ObjectFactory;
24
25 import javax.annotation.Nonnull;
26 import javax.inject.Inject;
27 import java.util.Collections;
28 import java.util.List;
29 import java.util.Map;
30
31 import static griffon.util.ConfigUtils.getConfigValue;
32 import static griffon.util.GriffonNameUtils.requireNonBlank;
33 import static java.util.Objects.requireNonNull;
34
35 /**
36 * @author Andres Almiray
37 * @since 2.0.0
38 */
39 public abstract class AbstractObjectFactory<T> implements ObjectFactory<T> {
40 private final Configuration configuration;
41 private final GriffonApplication application;
42
43 @Inject
44 public AbstractObjectFactory(@Nonnull Configuration configuration, @Nonnull GriffonApplication application) {
45 this.configuration = requireNonNull(configuration, "Argument 'configuration' must not be null");
46 this.application = requireNonNull(application, "Argument 'application' must not be null");
47 }
48
49 @Nonnull
50 public Configuration getConfiguration() {
51 return configuration;
52 }
53
54 @Nonnull
55 public GriffonApplication getApplication() {
56 return application;
57 }
58
59 @Nonnull
60 protected abstract String getSingleKey();
61
62 @Nonnull
63 protected abstract String getPluralKey();
64
65 protected void event(@Nonnull String eventName, @Nonnull List<?> args) {
66 application.getEventRouter().publishEvent(eventName, args);
67 }
68
69 @Nonnull
70 @SuppressWarnings({"unchecked", "ConstantConditions"})
71 protected Map<String, Object> narrowConfig(@Nonnull String name) {
72 requireNonBlank(name, "Argument 'name' must not be blank");
73 if (KEY_DEFAULT.equals(name) && configuration.containsKey(getSingleKey())) {
74 return (Map<String, Object>) configuration.get(getSingleKey());
75 } else if (configuration.containsKey(getPluralKey())) {
76 Map<String, Object> elements = (Map<String, Object>) configuration.get(getPluralKey());
77 return getConfigValue(elements, name, Collections.<String, Object>emptyMap());
78 }
79 return Collections.emptyMap();
80 }
81 }
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