PunchSettle-Server/src/main/java/com/punchsettle/server/common/converter/enums/IntegerToEnumConverter.java

package com.punchsettle.server.common.converter.enums;

import java.util.HashMap;
import java.util.Map;

import org.springframework.core.convert.converter.Converter;

/**
 * 转换器 数值转换为枚举
 *
 * @author tyuio
 */
public class IntegerToEnumConverter<T extends IJsonEnum<Integer>> implements Converter<Integer, T> {

    private final Map<Integer, T> enumMap = new HashMap<>();

    public IntegerToEnumConverter(Class<T> enumType) {
        T[] enums = enumType.getEnumConstants();
        for (T e : enums) {
            enumMap.put(e.getCode(), e);
        }
    }

    @Override
    public T convert(Integer source) {
        T t = enumMap.get(source);
        if (t == null) {
            throw new IllegalArgumentException("无法匹配对应的枚举类型");
        }
        return t;
    }

}