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Adapter for json/yaml configurations

There is a newer version: 1.6.5

/*
 *    Copyright 2024 Whilein
 *
 *    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 w.config.mapper;

import org.jetbrains.annotations.NotNull;

import java.util.List;
import java.util.Map;

/**
 * @author whilein
 */
public final class StringMapper extends AbstractMapper {
    private static final AbstractMapper INSTANCE = new StringMapper();

    private StringMapper() {
        super(String.class);
    }

    public static @NotNull AbstractMapper stringMapper() {
        return INSTANCE;
    }

    @Override
    protected String doMap(final Object o) {
        return o instanceof List || o instanceof Map ? null : o.toString();
    }

}