cn.maarlakes.enumx.jackson.EnumValueKeyDeserializer Maven / Gradle / Ivy

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enumx 提供枚举值的统一接口，枚举值扩展接口，以及一些常见的枚举工具方法。

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package cn.maarlakes.enumx.jackson;

import cn.maarlakes.enumx.EnumValue;
import cn.maarlakes.enumx.Enums;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.KeyDeserializer;
import jakarta.annotation.Nonnull;

import java.io.IOException;

/**
 * @author linjpxc
 */
@SuppressWarnings("unchecked")
public class EnumValueKeyDeserializer & EnumValue, V> extends KeyDeserializer {

    private final Class enumType;
    private final Class enumValueType;

    public EnumValueKeyDeserializer(@Nonnull Class enumType) {
        if (!(enumType.isEnum() && EnumValue.class.isAssignableFrom(enumType))) {
            throw new IllegalArgumentException();
        }
        this.enumType = (Class) enumType;
        this.enumValueType = Enums.getValueType((Class) enumType);
    }

    @Override
    public Object deserializeKey(String key, DeserializationContext ctxt) throws IOException {
        if (key == null) {
            return null;
        }
        final String newKey = key.trim();
        if (newKey.isEmpty()) {
            return key;
        }
        return Enums.valueOf(this.enumType, this.enumValueType, newKey, true);
    }
}