forked from eclipse-ee4j/jersey
/
JsonGsonFeature.java
75 lines (65 loc) · 2.75 KB
/
JsonGsonFeature.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
/*
* Copyright (c) 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.gson;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.Feature;
import javax.ws.rs.core.FeatureContext;
import org.glassfish.jersey.CommonProperties;
import org.glassfish.jersey.gson.internal.JsonGsonAutoDiscoverable;
import org.glassfish.jersey.gson.internal.JsonGsonProvider;
import org.glassfish.jersey.internal.InternalProperties;
import org.glassfish.jersey.internal.util.PropertiesHelper;
/**
* Feature used to register Gson providers.
* <p>
* The Feature is automatically enabled when {@link JsonGsonAutoDiscoverable} is on classpath.
* Default GSON configuration obtained by calling {@code GsonBuilder.create()} is used.
* <p>
* Custom configuration, if required, can be achieved by implementing custom {@link javax.ws.rs.ext.ContextResolver} and
* registering it as a provider into JAX-RS runtime:
* <pre>
* @Provider
* @class GsonContextResolver implements ContextResolver<Gson> {
* @Override
* public Gson getContext(Class<?> type) {
* GsonBuilder builder = new GsonBuilder();
* // add custom configuration
* return builder.create();
* }
* }
* </pre>
*
*/
public class JsonGsonFeature implements Feature {
private static final String JSON_FEATURE = JsonGsonFeature.class.getSimpleName();
@Override
public boolean configure(final FeatureContext context) {
final Configuration config = context.getConfiguration();
final String jsonFeature = CommonProperties.getValue(
config.getProperties(),
config.getRuntimeType(),
InternalProperties.JSON_FEATURE, JSON_FEATURE, String.class);
// Other JSON providers registered.
if (!JSON_FEATURE.equalsIgnoreCase(jsonFeature)) {
return false;
}
// Disable other JSON providers.
context.property(PropertiesHelper.getPropertyNameForRuntime(
InternalProperties.JSON_FEATURE, config.getRuntimeType()), JSON_FEATURE);
context.register(JsonGsonProvider.class);
return true;
}
}