de.escalon.hypermedia.spring.de.escalon.hypermedia.spring.jackson.JacksonHydraModule.java Source code

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Here is the source code for de.escalon.hypermedia.spring.de.escalon.hypermedia.spring.jackson.JacksonHydraModule.java

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/*
 * Copyright (c) 2014. Escalon System-Entwicklung, Dietrich Schulten
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 */

package de.escalon.hypermedia.spring.de.escalon.hypermedia.spring.jackson;

import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
import com.fasterxml.jackson.databind.ser.std.BeanSerializerBase;
import de.escalon.hypermedia.hydra.serialize.JacksonHydraSerializer;
import org.springframework.hateoas.Resource;
import org.springframework.hateoas.ResourceSupport;
import org.springframework.hateoas.Resources;

/**
 * Jackson Module which applies json-ld serialization to Spring Hateoas responses.
 * Created by dschulten on 14.09.2014.
 */
public class JacksonHydraModule extends SimpleModule {

    public JacksonHydraModule() {
        super("json-hydra-module", new Version(1, 0, 0, null, "de.escalon.hypermedia", "hydra-spring"));

        setMixInAnnotation(ResourceSupport.class, ResourceSupportMixin.class);
        setMixInAnnotation(Resources.class, ResourcesMixin.class);
        setMixInAnnotation(Resource.class, ResourceMixin.class);
        addSerializer(Resource.class, new ResourceSerializer());
    }

    public void setupModule(SetupContext context) {
        super.setupModule(context);

        context.addBeanSerializerModifier(new BeanSerializerModifier() {

            public JsonSerializer<?> modifySerializer(SerializationConfig config, BeanDescription beanDesc,
                    JsonSerializer<?> serializer) {

                if (serializer instanceof BeanSerializerBase) {
                    return new JacksonHydraSerializer((BeanSerializerBase) serializer);
                } else {
                    return serializer;
                }
            }
        });
    }

}