01 /*
02 * Copyright 2008-2014 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.storage;
17
18
19 import griffon.core.Configuration;
20 import griffon.core.GriffonApplication;
21 import griffon.core.storage.ObjectFactory;
22
23 import javax.annotation.Nonnull;
24 import javax.inject.Inject;
25 import java.util.Collections;
26 import java.util.List;
27 import java.util.Map;
28
29 import static griffon.util.ConfigUtils.getConfigValue;
30 import static griffon.util.GriffonNameUtils.requireNonBlank;
31 import static java.util.Objects.requireNonNull;
32
33 /**
34 * @author Andres Almiray
35 * @since 2.0.0
36 */
37 public abstract class AbstractObjectFactory<T> implements ObjectFactory<T> {
38 private final Configuration configuration;
39 private final GriffonApplication application;
40
41 @Inject
42 public AbstractObjectFactory(@Nonnull Configuration configuration, @Nonnull GriffonApplication application) {
43 this.configuration = requireNonNull(configuration, "Argument 'configuration' must not be null");
44 this.application = requireNonNull(application, "Argument 'application' must not be null");
45 }
46
47 @Nonnull
48 public Configuration getConfiguration() {
49 return configuration;
50 }
51
52 @Nonnull
53 public GriffonApplication getApplication() {
54 return application;
55 }
56
57 @Nonnull
58 protected abstract String getSingleKey();
59
60 @Nonnull
61 protected abstract String getPluralKey();
62
63 protected void event(@Nonnull String eventName, @Nonnull List<?> args) {
64 application.getEventRouter().publishEvent(eventName, args);
65 }
66
67 @Nonnull
68 @SuppressWarnings({"unchecked", "ConstantConditions"})
69 protected Map<String, Object> narrowConfig(@Nonnull String name) {
70 requireNonBlank(name, "Argument 'name' must not be blank");
71 if (KEY_DEFAULT.equals(name) && configuration.containsKey(getSingleKey())) {
72 return (Map<String, Object>) configuration.get(getSingleKey());
73 } else if (configuration.containsKey(getPluralKey())) {
74 Map<String, Object> elements = (Map<String, Object>) configuration.get(getPluralKey());
75 return getConfigValue(elements, name, Collections.<String, Object>emptyMap());
76 }
77 return Collections.emptyMap();
78 }
79 }
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