User defined deserializer/serializer in collection

src/main/java/org/eclipse/yasson/internal/deserializer/DeserializationModelCreator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2022 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2023 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
@@ -269,9 +269,10 @@ private ModelDeserializer<JsonParser> createCollectionDeserializer(CachedItem ca
                 ? ((ParameterizedType) type).getActualTypeArguments()[0]
                 : Object.class;
         colType = ReflectionUtils.resolveType(chain, colType);
+        ClassModel classModel = jsonbContext.getMappingContext().getOrCreateClassModel(ReflectionUtils.getRawType(colType));
         ModelDeserializer<JsonParser> typeProcessor = typeProcessor(chain,
                                                                     colType,
-                                                                    propertyCustomization,
+                                                                    classModel.getClassCustomization(),
                                                                     JustReturn.instance());
         CollectionDeserializer collectionDeserializer = new CollectionDeserializer(typeProcessor);
         CollectionInstanceCreator instanceDeserializer = new CollectionInstanceCreator(collectionDeserializer, type);

src/main/java/org/eclipse/yasson/internal/serializer/SerializationModelCreator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2022 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2023 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
@@ -286,7 +286,10 @@ private ModelSerializer createCollectionSerializer(LinkedList<Type> chain,
         Type colType = type instanceof ParameterizedType
                 ? ((ParameterizedType) type).getActualTypeArguments()[0]
                 : Object.class;
-        ModelSerializer typeSerializer = memberSerializer(chain, colType, customization, false);
+        Type resolvedKey = ReflectionUtils.resolveType(chain, colType);
+        Class<?> rawClass = ReflectionUtils.getRawType(resolvedKey);
+        ClassModel classModel = jsonbContext.getMappingContext().getOrCreateClassModel(rawClass);
+        ModelSerializer typeSerializer = memberSerializer(chain, colType, classModel.getClassCustomization(), false);
         CollectionSerializer collectionSerializer = new CollectionSerializer(typeSerializer);
         KeyWriter keyWriter = new KeyWriter(collectionSerializer);
         NullVisibilitySwitcher nullVisibilitySwitcher = new NullVisibilitySwitcher(true, keyWriter);

src/test/java/org/eclipse/yasson/serializers/SerializersTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2022 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2023 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
@@ -51,6 +51,8 @@
 import org.eclipse.yasson.serializers.model.Author;
 import org.eclipse.yasson.serializers.model.Box;
 import org.eclipse.yasson.serializers.model.BoxWithAnnotations;
+import org.eclipse.yasson.serializers.model.Containee;
+import org.eclipse.yasson.serializers.model.Container;
 import org.eclipse.yasson.serializers.model.Crate;
 import org.eclipse.yasson.serializers.model.CrateDeserializer;
 import org.eclipse.yasson.serializers.model.CrateDeserializerWithConversion;
@@ -797,4 +799,17 @@ public void testBoxToArray() {
         assertThat(jsonb.toJson(box), is(expected));
     }
 
+    @Test
+    public void testCustomSerializersInContainer(){
+        Jsonb jsonb = JsonbBuilder.create();
+
+        Container expected = new Container(List.of(new Containee("k", "v")));
+
+        String expectedJson = jsonb.toJson(expected);
+        System.out.println(expectedJson);
+
+        assertEquals(expected, jsonb.fromJson(expectedJson, Container.class));
+
+    }
+
 }

src/test/java/org/eclipse/yasson/serializers/model/Containee.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2023 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,
+ * or the Eclipse Distribution License v. 1.0 which is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+ */
+
+package org.eclipse.yasson.serializers.model;
+
+import java.util.Objects;
+
+import jakarta.json.bind.annotation.JsonbTypeDeserializer;
+import jakarta.json.bind.annotation.JsonbTypeSerializer;
+
+@JsonbTypeDeserializer(ContaineeDeserializer.class)
+@JsonbTypeSerializer(ContaineeSerializer.class)
+public class Containee {
+    final String key;
+    final String value;
+
+    public Containee(String key, String value) {
+        this.key = key;
+        this.value = value;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Containee containee = (Containee) o;
+        return Objects.equals(key, containee.key) && Objects.equals(value, containee.value);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(key, value);
+    }
+}

src/test/java/org/eclipse/yasson/serializers/model/ContaineeDeserializer.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2023 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,
+ * or the Eclipse Distribution License v. 1.0 which is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+ */
+
+package org.eclipse.yasson.serializers.model;
+
+import java.lang.reflect.Type;
+
+import jakarta.json.bind.serializer.DeserializationContext;
+import jakarta.json.bind.serializer.JsonbDeserializer;
+import jakarta.json.stream.JsonParser;
+
+public class ContaineeDeserializer implements JsonbDeserializer<Containee> {
+
+    @Override
+    public Containee deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
+        String key = null;
+        String value = "";
+        while (parser.hasNext()) {
+            var event = parser.next();
+            if (event == JsonParser.Event.KEY_NAME && parser.getString().equals("key")) {
+                parser.next(); // move to VALUE
+                key = parser.getString();
+            } else if (event == JsonParser.Event.KEY_NAME && parser.getString().equals("value")) {
+                parser.next(); // move to VALUE
+                value = parser.getString();
+            }
+        }
+        assert key != null;
+        return new Containee(key, value);
+    }
+
+}

src/test/java/org/eclipse/yasson/serializers/model/ContaineeSerializer.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2023 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,
+ * or the Eclipse Distribution License v. 1.0 which is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+ */
+
+package org.eclipse.yasson.serializers.model;
+
+import jakarta.json.bind.serializer.JsonbSerializer;
+import jakarta.json.bind.serializer.SerializationContext;
+import jakarta.json.stream.JsonGenerator;
+
+public class ContaineeSerializer implements JsonbSerializer<Containee> {
+
+    @Override
+    public void serialize(Containee obj, JsonGenerator generator, SerializationContext ctx) {
+        generator.writeStartObject();
+        generator.write("key", obj.key);
+        generator.write("value", obj.value);
+        generator.writeEnd();
+    }
+
+}

src/test/java/org/eclipse/yasson/serializers/model/Container.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2023 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,
+ * or the Eclipse Distribution License v. 1.0 which is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+ */
+
+package org.eclipse.yasson.serializers.model;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+public class Container {
+
+    private List<Containee> containees;
+
+    public Container() {
+        containees = new ArrayList<>();
+    }
+
+    public Container(List<Containee> containees) {
+        this.containees = containees;
+    }
+
+    public void setContainees(List<Containee> containees) {
+        this.containees = containees;
+    }
+
+    public List<Containee> getContainees() {
+        return containees;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Container container = (Container) o;
+        return Objects.equals(containees, container.containees);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(containees);
+    }
+}