CODEWITHSUNDEEP
javaspringspring-data-jpa
Pracede
Pracede

Reputation: 4361

Spring data jpa cannot find my custom implementation method

I am trying to provide a Custom Implementation of repository using Spring Data JPA. I have :

public interface PersonRepositoryCustom{

    List<Person> chercher(String name);

}

And the implementation :

 public class PersonRepositoryImpl implements PersonRepositoryCustom{

        List<Person> chercher(String name){ 
// my implementation
         }

    }

The two classes are in the jpa:repositories package

Here is my Person DAO: 

public interface IPersonDAO extends CrudRepository<Person, Long>,PersonRepositoryCustom{ 
// other methods here
}

When i launch the server i am getting the error :

org.springframework.data.mapping.PropertyReferenceException: No property chercher found for type Person
at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:75)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:307)
    at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:270)
    at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:241)
    at org.springframework.data.repository.query.parser.Part.<init>(Part.java:76)
    at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:201)
    at org.springframework.data.repository.query.parser.PartTree$Predicate.buildTree(PartTree.java:291)
    at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:271)
    at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:80)
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:57)
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:91)
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:162)
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:69)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:304)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:161)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:224)
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:210)
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:84)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612)

Upvotes: 3

Views: 3401

Answers (1)

Pracede
Pracede

Reputation: 4361

I've found the answer. Spring-data-jpa use a convention to write CustomRepository. To achieve this task : we have to have as explained in the Spring Data JPA documentation . We have to create a interface in which we add custom method :

public interface PersonRepositoryCustom{

    List<Person> chercher(String name);

}

Suppose we have following DAOService :

public interface IPersonDAO extends CrudRepository<Person, Long>,PersonRepositoryCustom{ 
// other methods here
}

So the implementation of custom repository is :IPersonDAOImpl

public class IPersonDAOImpl implements PersonRepositoryCustom{

        List<Person> chercher(String name){ 
// my implementation
         }

    }

And not PersonRepositoryImpl

I hope this will help.

Upvotes: 9

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