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Mybatis toolkit context project for Spring Boot

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package io.github.nichetoolkit.mybatis;

import io.github.nichetoolkit.rest.reflect.RestGenericTypes;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * MybatisMapper
 * The mybatis mapper interface.
 * @param  {@link java.lang.Object} The parameter can be of any type.
 * @author Cyan ([email protected])
 * @since Jdk1.8
 */
public interface MybatisMapper {
    /**
     * mapperType
     * The mapper type method.
     * @return {@link java.lang.Class} The mapper type return object is Class type.
     * @see java.lang.Class
     * @see java.lang.SuppressWarnings
     */
    @SuppressWarnings(value = "unchecked")
    default Class mapperType() {
        return (Class) Instance.mapperType(getClass());
    }

    /**
     * table
     * The table method.
     * @return {@link io.github.nichetoolkit.mybatis.MybatisTable} The table return object is MybatisTable type.
     * @see io.github.nichetoolkit.mybatis.MybatisTable
     */
    default MybatisTable table() {
        return MybatisFactory.createTable(mapperType(), null, null, null);
    }

    /**
     * Instance
     * The instance class.
     * @author Cyan ([email protected])
     * @since Jdk1.8
     */
    class Instance {

        /**
         * MAPPER_TYPES
         * {@link java.util.Map} The MAPPER_TYPES field.
         * @see java.util.Map
         */
        private static Map, Class> MAPPER_TYPES;

        /**
         * mapperType
         * The mapper type method.
         * @param clazz {@link java.lang.Class} The clazz parameter is Class type.
         * @return {@link java.lang.Class} The mapper type return object is Class type.
         * @see java.lang.Class
         */
        private static Class mapperType(Class clazz) {
            if (MAPPER_TYPES == null) {
                MAPPER_TYPES = new ConcurrentHashMap<>();
            }
            if (!MAPPER_TYPES.containsKey(clazz)) {
                MAPPER_TYPES.put(clazz, RestGenericTypes.resolveClass(RestGenericTypes.resolveType(
                        MybatisMapper.class.getTypeParameters()[0], clazz, MybatisMapper.class)));
            }
            return MAPPER_TYPES.get(clazz);
        }
    }
}