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A Jackson Module for serializing 'com.github.codeframes.hal.tooling.core.HalRepresentable' types (hal-tooling-core) to the JSON format of the HAL standard: application/hal+json.

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/*
 * Copyright © 2016 Richard Burrow (https://github.com/codeframes)
 *
 * 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 com.github.codeframes.hal.tooling.json.ser;

import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializationConfig;
import com.fasterxml.jackson.databind.ser.BeanSerializerModifier;
import com.fasterxml.jackson.databind.ser.std.BeanSerializerBase;
import com.github.codeframes.hal.tooling.core.HalRepresentable;
import com.github.codeframes.hal.tooling.json.ser.config.HalSerializationConfig;

public final class HalRepresentableSerializerModifier extends BeanSerializerModifier {

    private final HalSerializationConfig halSerializationConfig;

    public HalRepresentableSerializerModifier(HalSerializationConfig halSerializationConfig) {
        this.halSerializationConfig = halSerializationConfig;
    }

    @Override
    public JsonSerializer modifySerializer(SerializationConfig serializationConfig,
                                              BeanDescription beanDesc,
                                              JsonSerializer serializer) {

        if (serializer instanceof BeanSerializerBase && HalRepresentable.class.isAssignableFrom(beanDesc.getBeanClass())) {
            return HalSerializerFactory.newHalSerializer(halSerializationConfig, (BeanSerializerBase) serializer);
        }
        return super.modifySerializer(serializationConfig, beanDesc, serializer);
    }
}