Spring Data MongDB 2.1.0中的PropertyReferenceException

Question

I am using spring data mongdb 2.1.0. And have custom implementation of repository as given below:

public class ProductItemRepositoryImpl implements ProductItemRepositoryCustom {


  @Override
  public List<String> getItemIdsGivenSkuOrCode(String itemIdType, String itemId) {
    Query query = new Query();
    query.addCriteria(Criteria.where(itemIdType).is(itemId));
    return mongoTemplate
        .findDistinct(query, FieldNames.PRODUCT_ITEM_ID, ProductItem.COLLECTION_NAME,
            String.class);
  }
} 

Custom repo :

public interface ProductItemRepositoryCustom {
  List<String> getItemIdsGivenSkuOrCode(String itemIdType, String itemId);
}

Repo :

public interface ProductItemRepository
    extends MongoRepository<ProductItem, Long>, ProductItemRepositoryCustom {
}

I dont understand why it is considering custom method(getItemIdsGivenSkuOrCode) as property. When i am running this, getting below given error :

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productItemRepository': Invocation of init method failed; nested exception is org.springframework.data.mapping.PropertyReferenceException: No property getItemIdsGivenSku found for type ProductItem!
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1699) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:573) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:740) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]

Answer 1

I think it has to do something with method naming

Assuming your fields in ProductItem are

String itemIdType;
String itemId;

Method Name would be

public interface ProductItemRepositoryCustom {
  List<String> findByItemIdTypeOrItemId(String itemIdType, String itemId);
}

or to be on safer side you can add query

@Query("{ 'itemIdType': ?0, 'itemId': ?1}")
public List<String> findByItemIdTypeOrItemId(String itemIdType, String itemId);