java - Spring Data JPA NamedStoredProcedureQuery Multiple Out Parameters

Java - Spring Data JPA NamedStoredProcedureQuery Multiple Out Parameters

When working with stored procedures in Spring Data JPA that have multiple out parameters, you can utilize @NamedStoredProcedureQuery along with @ProcedureParameter annotations to handle them. However, Spring Data JPA does not directly support multiple out parameters in the same way as you might handle multiple result sets from a stored procedure.

One common approach to handle multiple out parameters is to use a wrapper class to hold the result. Here's how you can do it:

Assuming you have a stored procedure with multiple out parameters like this:

CREATE PROCEDURE get_user_info(IN user_id INT, OUT user_name VARCHAR(255), OUT user_email VARCHAR(255)) BEGIN SELECT name, email INTO user_name, user_email FROM users WHERE id = user_id; END
  1. Create a Java class to hold the result:
public class UserInfo { private String userName; private String userEmail; // Getters and setters }
  1. Define the named stored procedure query:
import org.springframework.data.jpa.repository.query.Procedure; import org.springframework.data.repository.query.Param; import org.springframework.data.jpa.repository.query.Procedure; import org.springframework.data.jpa.repository.query.ProcedureParameter; @NamedStoredProcedureQuery( name = "getUserInfo", procedureName = "get_user_info", resultClasses = UserInfo.class, parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "user_id", type = Integer.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "user_name", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "user_email", type = String.class) } ) public interface UserRepository extends JpaRepository<User, Long> { @Procedure(name = "getUserInfo") void getUserInfo(@Param("user_id") int userId); }
  1. In your service or repository, call the stored procedure and receive the result:
@Autowired private UserRepository userRepository; public void getUserInfo(int userId) { userRepository.getUserInfo(userId); }
  1. Process the result:
UserInfo userInfo = userRepository.getUserInfo(userId); String userName = userInfo.getUserName(); String userEmail = userInfo.getUserEmail();

This way, you wrap the multiple out parameters into a single object (UserInfo), and Spring Data JPA handles the mapping for you.

Examples

  1. Spring Data JPA NamedStoredProcedureQuery with Multiple Out Parameters

    • Description: Discover how to define a NamedStoredProcedureQuery in Spring Data JPA with multiple out parameters.
    @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter2", type = Integer.class) } )

  2. Spring Data JPA NamedStoredProcedureQuery with Multiple Output Parameters

    • Description: Implement a NamedStoredProcedureQuery in Spring Data JPA with multiple output parameters.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter2", type = Integer.class) } ) public class MyEntity { // Entity mapping }

  3. Spring Data JPA NamedStoredProcedureQuery with Multiple Result Sets

    • Description: Define a NamedStoredProcedureQuery in Spring Data JPA to handle multiple result sets.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", resultClasses = {ResultEntity1.class, ResultEntity2.class} ) public class MyEntity { // Entity mapping }

  4. Spring Data JPA NamedStoredProcedureQuery with Out Parameters

    • Description: Configure a NamedStoredProcedureQuery in Spring Data JPA to handle out parameters.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter", type = String.class) } ) public class MyEntity { // Entity mapping }

  5. Spring Data JPA NamedStoredProcedureQuery with Multiple Output Parameters and Result Classes

    • Description: Utilize a NamedStoredProcedureQuery in Spring Data JPA with multiple output parameters and result classes.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter2", type = Integer.class) }, resultClasses = {ResultEntity1.class, ResultEntity2.class} ) public class MyEntity { // Entity mapping }

  6. Spring Data JPA NamedStoredProcedureQuery with Output Parameters and Result Set Mapping

    • Description: Define a NamedStoredProcedureQuery in Spring Data JPA with output parameters and result set mapping.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter", type = String.class) }, resultSetMappings = "MyResultSetMapping" ) public class MyEntity { // Entity mapping }

  7. Spring Data JPA NamedStoredProcedureQuery with Multiple Out Parameters and Result Set Mapping

    • Description: Implement a NamedStoredProcedureQuery in Spring Data JPA with multiple out parameters and result set mapping.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter2", type = Integer.class) }, resultSetMappings = "MyResultSetMapping" ) public class MyEntity { // Entity mapping }

  8. Spring Data JPA NamedStoredProcedureQuery with Out Parameters and Result Set Mapping

    • Description: Configure a NamedStoredProcedureQuery in Spring Data JPA with out parameters and result set mapping.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter", type = String.class) }, resultSetMappings = "MyResultSetMapping" ) public class MyEntity { // Entity mapping }

  9. Spring Data JPA NamedStoredProcedureQuery with Multiple Out Parameters and Result Class

    • Description: Define a NamedStoredProcedureQuery in Spring Data JPA with multiple out parameters and a result class.
    @Entity @NamedStoredProcedureQuery( name = "myStoredProcedure", procedureName = "my_procedure", parameters = { @StoredProcedureParameter(mode = ParameterMode.IN, name = "inputParameter", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter1", type = String.class), @StoredProcedureParameter(mode = ParameterMode.OUT, name = "outParameter2", type = Integer.class) }, resultClass = MyResultClass.class ) public class MyEntity { // Entity mapping }

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