CodeTextEnumDeserializer.java

package com.keruyun.kic.commons.enums;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer;

import java.io.IOException;

public class CodeTextEnumDeserializer
        extends StdScalarDeserializer<CodeTextEnum<?, ?>> implements ContextualDeserializer {

    public CodeTextEnumDeserializer() {
        super(CodeTextEnum.class);
    }

    public CodeTextEnumDeserializer(JavaType javaType) {
        super(javaType.getRawClass());
    }

    @Override
    public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property)
            throws JsonMappingException {
        JavaType type = ctxt.getContextualType() != null ? ctxt.getContextualType() : property.getMember().getType();
        return new CodeTextEnumDeserializer(type);
    }

    @Override
    public CodeTextEnum<?, ?> deserialize(JsonParser parser, DeserializationContext ctxt)
            throws IOException {
        return fromCode(handledType(), parser.getNumberValue());
    }

    @SuppressWarnings("unchecked")
    private <E extends Enum<E> & CodeTextEnum<Number, E>> CodeTextEnum<?, ?> fromCode(Class<?> clz, Number value) {
        return CodeTextEnum.fromCode((Class<E>) clz, value);
    }
}