backend/src/main/java/nju/seec/helper/dto/question/BaseQuestionDTO.java

package nju.seec.helper.dto.question;

import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import lombok.Data;
import nju.seec.helper.dto.groups.Create;
import org.hibernate.validator.constraints.Length;

import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import java.util.List;

/**
 * @author cst
 */
@Data
@JsonTypeInfo(
        use = JsonTypeInfo.Id.NAME,
        include = JsonTypeInfo.As.EXISTING_PROPERTY,
        property = "type",
        visible = true
)
@JsonSubTypes({
        @JsonSubTypes.Type(value = ChoiceQuestionDTO.class, name = BaseQuestionDTO.CHOICE),
        @JsonSubTypes.Type(value = TrueOrFalseQuestionDTO.class, name = BaseQuestionDTO.TRUE_FALSE)
})
public abstract class BaseQuestionDTO {
    protected static final String CHOICE = "choice";
    protected static final String TRUE_FALSE = "true_false";

    @NotBlank(message = "题干不能为空")
    @Length(max = 1000, message = "题干长度不能超过1000")
    protected String stem;
    @Length(max = 1000, message = "解析长度不能超过1000")
    protected String analysis;
    @NotNull(message = "缺少题目类型", groups = Create.class)
    protected String type;

    protected String keyPoints;
    protected List<String> tags;
    protected List<String> knowledgeId;
}