Why getting org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join! when joining 3 tables - spring-boot

Question

I have three entity basicInfo, gender and department. If I join with basicInfo and gender model then it works fine but when want to join department along with other two entities same time then showing
.QuerySyntaxException: Path expected for join!
My Three entity classes here,
#Entity
#Table(name = "employeebasicinfo")
public class BasicInfoModel {
#Id private String employeeId;
#NotBlank private String firstName;
#NotBlank private String lastName;
#NotNull private Integer companyId;
#Transient private String companyName;
private String phoneNo;
#Column(name = "sex")
private char sexId;
#Transient private String sexName;
#Temporal(TemporalType.TIMESTAMP)
private Date birthDate;
#Temporal(TemporalType.TIMESTAMP)
private Date joiningDate;
#NotNull private Integer department;
#Transient private String departmentName;
#ManyToOne()
#JoinColumn(name = "sex", referencedColumnName = "id", insertable = false, updatable = false)
private GenderModel genderModel;
#ManyToOne
#JoinColumn(
name = "department",
referencedColumnName = "id",
insertable = false,
updatable = false)
private DepartmentModel departmentModel;
// getter setter
}
Gender Model
#Entity
#Table(name = "gender")
public class GenderModel implements Serializable {
#Id
#Column(name = "id")
private char id;
#Column(name = "name")
private String name;
//getter setter
}
And Department model
#Entity
#Table(name = "department")
public class DepartmentModel {
#Id private int id;
private String name;
//getter setter
}
My Dto class
public class BasicInfoDto {
private String employeeId;
private String firstName;
private String lastName;
private Integer companyId;
private String companyName;
private String phoneNo;
private char sexId;
private String sexName;
private Date birthDate;
private Date joiningDate;
private Integer department;
private String departmentName;
public BasicInfoDto(char sexId, String sexName, int department, String departmentName) {
this.sexId = sexId;
this.sexName = sexName;
this.department = department;
this.departmentName = departmentName;
//getter setter
}
My Repository class is below:
#Repository
public interface BasicInfoRepository extends JpaRepository<BasicInfoModel, String> {
#Query(
value =
"SELECT new com.employeeAttendance.employeeAttendance.dto.BasicInfoDto ("
+ " a.sexId, b.name, a.department,c.name) FROM "
+ " BasicInfoModel a INNER JOIN GenderModel b on a.sexId = b.id" +
" INNER JOIN DepartmentMode c on a.department = c.id")
List<BasicInfoDto> getBasicInfoList();
}
And finally I am getting this error
Caused by: java.lang.IllegalArgumentException:
org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for
join! [SELECT new
com.employeeAttendance.employeeAttendance.dto.BasicInfoDto ( a.sexId,
b.name, a.department,c.name) FROM
com.employeeAttendance.employeeAttendance.model.BasicInfoModel a INNER
JOIN com.employeeAttendance.employeeAttendance.model.GenderModel b on
a.sexId = b.id INNER JOIN DepartmentMode c on a.department = c.id]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:713)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:23)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[na:1.8.0_191]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[na:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:350)
~[spring-orm-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at com.sun.proxy.$Proxy109.createQuery(Unknown Source) ~[na:na]
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:87)
~[spring-data-jpa-2.1.4.RELEASE.jar:2.1.4.RELEASE]
... 76 common frames omitted
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join! [SELECT new
com.employeeAttendance.employeeAttendance.dto.BasicInfoDto ( a.sexId,
b.name, a.department,c.name) FROM
com.employeeAttendance.employeeAttendance.model.BasicInfoModel a INNER
JOIN com.employeeAttendance.employeeAttendance.model.GenderModel b on
a.sexId = b.id INNER JOIN DepartmentMode c on a.department = c.id]
at org.hibernate.hql.internal.ast.QuerySyntaxException.convert(QuerySyntaxException.java:74)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.hql.internal.ast.ErrorTracker.throwQueryException(ErrorTracker.java:93)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:277)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:191)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:143)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:119)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.(HQLQueryPlan.java:80)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:153)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:595)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:704)
~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
... 84 common frames omitted
However, if I remove 2nd join with department then it work fine.

Answer 1

You are working on the entity properties in jpql not on tables. So you only tell jpql which property to use to join:
"SELECT new com.employeeAttendance.employeeAttendance.dto.BasicInfoDto ("
+ " a.sexId, b.name, a.department,c.name) FROM "
+ " BasicInfoModel a INNER JOIN a.genderModel b "
+ " INNER JOIN a.departmentModel c";