Duplicate columns in sleep mode with Select Query
I have a problem with HSQL statements generated by sleeping move where I select query has DUPLICATE columns when retrieving an entity along with its one-to-many. My class definitions look like this:
@javax.persistence.Entity
@Table(name = "SCHOOL")
public Class School implements Serializable {
@Id
private long id;
@Column(name="NAME")
private String name;
@Column(name="ZIP_CODE")
private String zipCode;
@OneToMany
@JoinColumn(name="NAME", referencedColumnName="SCHOOL_NAME")
private Set<Student> students= new HashSet<Student>();
/*
*
*followed by other variable definitions, getters and setters
*/
}
@javax.persistence.Entity
@Table(name = "STUDENT")
public Class Student implements Serializable {
@Id
private long id;
@Column(name="FNAME")
private String fName;
@Column(name="LNAME")
private String lName;
@Column(name="SCHOOL_NAME")
private String schoolName;
@Column(name="DOB")
private Date dateOfBirth;
/*
*
*followed by other variable definitions, getters and setters
*/
}
I have the following criteria for retrieving schools and corresponding students in a specific zipcode.
Criteria criteria = session.createCriteria(School.class);
criteria.add(Restrictions.in("zipCode", 56789));
List<School> schools = criteria.list();
The above criteria generate the following HSQL in the background with duplicate columns for the STUDENT columns in the SELECT query.
select
this_.ZIP_CODE as ZIP_CODE1_16_3_,
this_.name as NAME_16_3_,
this_.LICENSE_NUM as LICENSE_N3_16_3_,
student3_.FNAME as ZIP_CODE1_16_5_,
student3_.LNAME as NAME_16_5_,
student3_.GRADE as GRADE4_16_5_,
student3_.ETHNICITY as ETHNICITY5_16_5_,
student3_.SCHOOL_NAME as SCHOOL_NA6_16_5_,
student3_.FNAME as ZIP_CODE1_14_5_,
student3_.LNAME as NAME_14_5_,
student3_.GRADE as GRADE4_14_5_,
student3_.ETHNICITY as ETHNICITY5_14_5_,
student3_.SCHOOL_NAME as SCHOOL_NA6_14_5_,
student3_.FNAME as ZIP_CODE1_14_1_,
student3_.LNAME as NAME_14_1_,
student3_.GRADE as GRADE4_14_1_,
student3_.ETHNICITY as ETHNICITY5_14_1_,
student3_.SCHOOL_NAME as SCHOOL_NA6_14_1_
from
SCHOOL this_,
STUDENT student3_
where
and this_.name=student3_.SCHOOL_NAME(+)
and this_.ZIP_CODE=56789;
(The request was previously modified a bit before posting it here.)
Please suggest a solution by which I can get rid of duplicate columns in SELECT query.
Note. I am using hibernate 4.2.7 and hibernate-jpa-2.0-api
+3
source to share
No one has answered this question yet
Check out similar questions: