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package pers.clare.hisql.support;

import pers.clare.hisql.function.ResultSetValueConverter;

import java.io.InputStream;
import java.sql.ResultSet;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class ResultSetConverter {

    private final Map, ResultSetValueConverter> converterMap = new ConcurrentHashMap<>();

    {
        register(InputStream.class, ResultSet::getBinaryStream);
    }

    public void register(Class returnClass, ResultSetValueConverter resultSetValueConverter) {
        converterMap.put(returnClass, resultSetValueConverter);
    }

    @SuppressWarnings("unchecked")
    public  ResultSetValueConverter get(Class returnClass) {
        return (ResultSetValueConverter) converterMap.get(returnClass);
    }

}