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  1. JBoss Enterprise Application Platform
  2. JBEAP-22263

[GSS](7.4.z) Serialization of a Map fails if the key uses a custom Serializer

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      Use an adapter for the map:

      public class LocaleJsonbAdapter implements JsonbAdapter<Map<Locale, String>, Map<String, String>> {
    @Override
    public Map<String, String> adaptToJson(final Map<Locale, String> obj) throws Exception {
        final Map<String, String> copy = new LinkedHashMap<>();
        for (Map.Entry<Locale, String> entry : obj.entrySet()) {
            copy.put(entry.getKey().toLanguageTag(), entry.getValue());
        }
        return copy;
    }

    @Override
    public Map<Locale, String> adaptFromJson(final Map<String, String> obj) throws Exception {
        final Map<Locale, String> copy = new LinkedHashMap<>();
        for (Map.Entry<String, String> entry : obj.entrySet()) {
            copy.put(Locale.forLanguageTag(entry.getKey()), entry.getValue());
        }
        return copy;
    }
}
      Show
      Use an adapter for the map: public class LocaleJsonbAdapter implements JsonbAdapter<Map<Locale, String >, Map< String , String >> { @Override public Map< String , String > adaptToJson( final Map<Locale, String > obj) throws Exception { final Map< String , String > copy = new LinkedHashMap<>(); for (Map.Entry<Locale, String > entry : obj.entrySet()) { copy.put(entry.getKey().toLanguageTag(), entry.getValue()); } return copy; } @Override public Map<Locale, String > adaptFromJson( final Map< String , String > obj) throws Exception { final Map<Locale, String > copy = new LinkedHashMap<>(); for (Map.Entry< String , String > entry : obj.entrySet()) { copy.put(Locale.forLanguageTag(entry.getKey()), entry.getValue()); } return copy; } }
    • Hide

      With the attached maven project just execute test on it:

      unzip issue-map-locale-key.zip
cd issue-map-locale-key
mvn clean test
      Show
      With the attached maven project just execute test on it: unzip issue-map-locale-key.zip cd issue-map-locale-key mvn clean test

    Description

      If you define a custom Serializer for a Locale object like the following:

          public static class LocaleSerializer implements JsonbSerializer<Locale> {
        @Override
        public void serialize(Locale obj, JsonGenerator generator, SerializationContext ctx) {
            generator.write(obj.toLanguageTag());
        }
    }

      And use a Pojo class that contains a Map field with Locale as the key:

      public class TestObject {
  private Map<Locale, String> localeKeyMap;
  ...
}

      If you try to serialize it with current yasson (version 2.0.2 or 1.0.9 included in EAP), like the following code:

              Jsonb jsonb = JsonbBuilder.create(new JsonbConfig()
                .withSerializers(new LocaleSerializer())
                .withDeserializers(new LocaleDeserializer()));
        TestObject o = new TestObject();
        o.getLocaleKeyMap().put(Locale.US, "us");
        jsonb.toJson(o);

      The following exception is thrown:

      jakarta.json.bind.JsonbException: Unable to serialize property 'values' from test.MapObjectTest.MapObjectLocaleString
	at org.eclipse.yasson.internal.serializer.ObjectSerializer.serializeInternal(ObjectSerializer.java:71)
	at org.eclipse.yasson.internal.serializer.AbstractContainerSerializer.serialize(AbstractContainerSerializer.java:107)
	at org.eclipse.yasson.internal.Marshaller.serializeRoot(Marshaller.java:147)
	at org.eclipse.yasson.internal.Marshaller.marshall(Marshaller.java:73)
	at org.eclipse.yasson.internal.Marshaller.marshall(Marshaller.java:101)
	at org.eclipse.yasson.internal.JsonBinding.toJson(JsonBinding.java:126)
	at test.MapObjectTest.test1(MapObjectTest.java:95)
	...
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Locale
	at test.MapObjectTest$LocaleSerializer.serialize(MapObjectTest.java:27)
	at org.eclipse.yasson.internal.serializer.UserSerializerSerializer.serialize(UserSerializerSerializer.java:53)
	at org.eclipse.yasson.internal.serializer.AbstractContainerSerializer.serializerCaptor(AbstractContainerSerializer.java:125)
	at org.eclipse.yasson.internal.serializer.AbstractContainerSerializer.serializeItem(AbstractContainerSerializer.java:194)
	at org.eclipse.yasson.internal.serializer.MapToEntriesArraySerializer.lambda$serializeContainer(MapToEntriesArraySerializer.java:111)
	at java.util.HashMap.forEach(HashMap.java:1289)
	at org.eclipse.yasson.internal.serializer.MapToEntriesArraySerializer.serializeContainer(MapToEntriesArraySerializer.java:106)
	at org.eclipse.yasson.internal.serializer.MapSerializer.serializeInternal(MapSerializer.java:156)
	at org.eclipse.yasson.internal.serializer.MapSerializer.serializeInternal(MapSerializer.java:27)
	at org.eclipse.yasson.internal.serializer.AbstractContainerSerializer.serialize(AbstractContainerSerializer.java:107)
	at org.eclipse.yasson.internal.serializer.AbstractContainerSerializer.serializerCaptor(AbstractContainerSerializer.java:125)
	at org.eclipse.yasson.internal.serializer.ObjectSerializer.marshallProperty(ObjectSerializer.java:121)
	at org.eclipse.yasson.internal.serializer.ObjectSerializer.serializeInternal(ObjectSerializer.java:69)
	... 38 more

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          is incorporated by

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. JBEAP-22839 [GSS](7.4.z) Upgrade yasson from 1.0.9.redhat-00001 to 1.0.10.redhat-00001

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          links to

          Web Link Issue in yasson #500

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              rhn-support-rmartinc Ricardo Martin Camarero
              rhn-support-rmartinc Ricardo Martin Camarero
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                Updated:
                Resolved: