java 避免MapStruct中的重复Map

mklgxw1f 于 2023-03-28 发布在 Java

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我有两个MapStructMap器类，其中一些目标/源类和一些字段完全相同：

///Mapper 1
  @Mappings({
          @Mapping(target = "tenantTitleId", expression = "java(order.getProductID())"),
          @Mapping(target = "tenantId", constant = "MGM"),
          @Mapping(target = "titleName", expression = "java(order.getProductDesc())"),
          @Mapping(target = "orders", source = "order", qualifiedBy = ComplexMapper.class),
  })
  @BeanMapping(ignoreByDefault = true)
  public abstract TargetClass toTargetClass(SourceClass sourceClass) throws Exception;

  ///Mapper 2
  @Mappings({
          @Mapping(target = "tenantTitleId", expression = "java(order.getProductID())"),
          @Mapping(target = "tenantId", constant = "MGM"),
          @Mapping(target = "titleName", expression = "java(order.getProductDesc())"),
          @Mapping(target = "orders", source = "order", qualifiedBy = AnotherComplexMapper.class),
  })
  @BeanMapping(ignoreByDefault = true)
  public abstract TargetClass toTargetClass(SourceClass sourceClass) throws Exception;

前3个Map是完全相同的。有没有一种方法可以不重复这个Map的MapStruct方式？

Java

来源：https://stackoverflow.com/questions/66020979/avoid-duplicate-mapping-in-mapstruct

1条答案

按热度按时间

zc0qhyus1#

您可以使用Map组合来避免重复。
例如

@Retention(RetentionPolicy.CLASS)
@Mapping(target = "tenantTitleId", expression = "productID")
@Mapping(target = "tenantId", constant = "MGM")
@Mapping(target = "titleName", expression = "productDesc")
public @interface CommonMappings { }

然后你的mapper看起来像这样：

///Mapper 1
  @CommonMappings
  @Mapping(target = "orders", source = "order", qualifiedBy = ComplexMapper.class)
  @BeanMapping(ignoreByDefault = true)
  public abstract TargetClass toTargetClass(SourceClass sourceClass) throws Exception;

  ///Mapper 2
  @CommonMappings
  @Mapping(target = "orders", source = "order", qualifiedBy = AnotherComplexMapper.class)
  @BeanMapping(ignoreByDefault = true)
  public abstract TargetClass toTargetClass(SourceClass sourceClass) throws Exception;

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java 避免MapStruct中的重复Map

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