JPA with hibernate implementation is generating wrong named query - spring-data-jpa

Question

I configured JPA with spring. I am using spring 4.
I have an entity
#Entity
#NamedQueries({
#NamedQuery(name="PartnerCourseMapping.findByPartnerCourseIdAndHandlerName", query="select pm from PartnerCourseMapping pm where pm.partnerCourseId=:partnerCourseId and pm.handlerName=:handlerName")
})
#Table(name="PARTNER_COURSE_MAPPING")
public class PartnerCourseMapping implements Serializable {
private static final long serialVersionUID = 1L;
#Id
protected Long id;
#Column(name="COURSE_ID")
protected Long courseId;
#Column(name="PARTNER_COURSE_ID")
protected String partnerCourseId;
#Column(name="PARTNER_ID")
protected Integer partnerId;
#Column(name="PRODUCT_TYPE")
protected String productType;
#Column(name="HANDLER_NAME")
protected String handlerName;
//getters and setters
}
I have another entity which i defined like below
#Entity
#NamedNativeQueries({
#NamedNativeQuery(
name="ExternalCourse.findExternalCourseMappingByLearningSessionGuid",
query="SELECT PCM.*, LE.id AS LearnerEnrollmentId, LE.LEARNER_ID AS LearnerId "
+ "FROM LEARNINGSESSION LS "
+ "INNER JOIN LEARNERENROLLMENT LE ON LE.ID = LS.ENROLLMENT_ID "
+ "INNER JOIN PARTNER_COURSE_MAPPING PCM ON PCM.COURSE_ID = LE.COURSE_ID "
+ "WHERE LS.LEARNINGSESSIONGUID = :learningSessionGuid",
resultSetMapping="externalCourseMapping"
)
})
#SqlResultSetMappings({
#SqlResultSetMapping(
name="externalCourseMapping",
classes = {
#ConstructorResult(targetClass = ExternalCourse.class,
columns={
#ColumnResult(name = "ID", type=Long.class ),
// remaing ColumnResult
}
)
}
)
})
public class ExternalCourse extends PartnerCourseMapping /*implements Serializable*/ {
private Long learnerEnrollmentId;
private Long learnerId;
//default constructor
public ExternalCourse(Long id, Long courseId, String partnerCourseId, Integer partnerId, String productType,
String handlerName, Long learnerEnrollmentId, Long learnerId) {
this.id = id;
// remaing values
}
//getters and setters for learnerEnrollmentId and learnerId
}
Now I query PartnerCourseMapping.findByPartnerCourseIdAndHandlerName
TypedQuery<PartnerCourseMapping> query = entityManager.createNamedQuery("PartnerCourseMapping.findByPartnerCourseIdAndHandlerName", PartnerCourseMapping.class);
query.setParameter("partnerCourseId", paernerCourseId);
query.setParameter("handlerName", handlerName);
return getResult(query);
protected T getResult(TypedQuery<T> query) {
List<T> list = query.getResultList();
return CollectionUtils.isEmpty(list) ? null : list.get(0);
}
Hibernate is generating exception that
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not extract ResultSet
...
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: Invalid column name 'learnerEnrollmentId'.
When I debug then I saw hibernate is generating query like below
select partnercou0_.id as id2_13_,
partnercou0_.COURSE_ID as COURSE_I3_13_,
partnercou0_.HANDLER_NAME as HANDLER_4_13_,
partnercou0_.PARTNER_COURSE_ID as PARTNER_5_13_,
partnercou0_.PARTNER_ID as PARTNER_6_13_,
partnercou0_.PRODUCT_TYPE as PRODUCT_7_13_,
partnercou0_.learnerEnrollmentId as learnerE8_13_,
partnercou0_.learnerId as learnerI9_13_,
partnercou0_.DTYPE as DTYPE1_13_
from PARTNER_COURSE_MAPPING partnercou0_ where partnercou0_.PARTNER_COURSE_ID=? and partnercou0_.HANDLER_NAME=?
I want to ask that why hibernate is including learnerEnrollmentId and learnerId column? I am passing the query name and query. If I refactor my code like below then I get the correct result
#Entity
#NamedNativeQueries({
#NamedNativeQuery(
name="ExternalCourse.findExternalCourseMappingByLearningSessionGuid",
...
resultSetMapping="externalCourseMapping"
)
})
#SqlResultSetMappings({
#SqlResultSetMapping(
name="externalCourseMapping",
classes = {
..
}
)
})
public class ExternalCourse implements Serializable {
private static final long serialVersionUID = 1L;
#Id
private Long id;
private Long courseId;
private String partnerCourseId;
private Integer partnerId;
private String productType;
private String handlerName;
private Long learnerEnrollmentId;
private Long learnerId;
//default constructor
//constructor with all parameters
//getters and setters
}
Why I am getting exception when I am extending class? I am passing the query name. Why ?
Thanks