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Utilities to output ONIX as JSON

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/*
 * Copyright (C) 2012-2023 Zach Melamed
 *
 * Latest version available online at https://github.com/zach-m/jonix
 * Contact me at [email protected]
 *
 * 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.tectonica.jonix.jackson;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

import java.text.SimpleDateFormat;
import java.util.TimeZone;

public class JonixPublicFieldsObjectMapper extends ObjectMapper {
    public JonixPublicFieldsObjectMapper() {
        // configure to use public fields only, consistent with Jonix design
        setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.PUBLIC_ONLY);
        setVisibility(PropertyAccessor.GETTER, JsonAutoDetect.Visibility.NONE);
        setVisibility(PropertyAccessor.SETTER, JsonAutoDetect.Visibility.NONE);

        // general configuration
        setSerializationInclusion(JsonInclude.Include.NON_NULL);
        enable(SerializationFeature.INDENT_OUTPUT);

        enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
        disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
        setDateFormat(sdf);
    }
}