Not able to use custom POJO classes for my spring data jpa queries. Repeatedly fails with the following exception
"org.hibernate.MappingException: Unknown entity:
com.app.mycompany.AgileCenterServices.entities.ComponentDetailedInfo"*
Tried replacing the custom ComponentDetailedInfo.class and not mentioning anything during the call to entityManager.createNativeQuery(componentQuery.toString()), but then Object List returned fails to be converted to the specific POJO class after the query.
#Override
public ComponentListResponsePaginated findComponentByProjectId(String projectId, Pageable pageable) {
logger.info(" Inside findComponentByProjectId() API in IssueComponentServiceImpl");
String componentQuery = "select c.*, u.fullname "
+ "from issue_component c "
+ "left join user u on c.component_lead = u.username "
+ "where "
+ "upper(c.project_id) = upper(" + projectId + ")";
List<ComponentDetailedInfo> compList = new ArrayList<ComponentDetailedInfo>();
try {
logger.info(" ************* Printing query ******************************* ");
logger.info(componentQuery.toString());
compList = entityManager.createNativeQuery(componentQuery.toString(), ComponentDetailedInfo.class) .setFirstResult(pageable.getOffset())
.setMaxResults(pageable.getPageSize())
.getResultList();
}
}
Also tried the following
List<? extends Object> objList = null;
objList = entityManager.createNativeQuery(componentQuery.toString()) .setFirstResult(pageable.getOffset())
.setMaxResults(pageable.getPageSize())
.getResultList();
if(objList != null && objList.size() > 0) {
for(Object rec: objList) {
logger.info(" Printing Object ::: " + rec.toString());
compList.add((ComponentDetailedInfo)rec);
}
}
However the compList fails with the
java.lang.ClassCastException
The custom query returned should get typecast to the specific class type passed to the entityManager.createNativeQuery. However, I am facing the exception as mentioned above when I pass the class to createNativeQuery().
Even tried by totally removed the class in the createNativeQuery...
You have to define a constructor result mapping if you want to use a POJO as a result of a native query.
Here is an example query:
Query q = em.createNativeQuery(
"SELECT c.id, c.name, COUNT(o) as orderCount, AVG(o.price) AS avgOrder " +
"FROM Customer c " +
"JOIN Orders o ON o.cid = c.id " +
"GROUP BY c.id, c.name",
"CustomerDetailsResult");
And that's the mapping you have to add to your Entity:
#SqlResultSetMapping(name="CustomerDetailsResult",
classes={
#ConstructorResult(targetClass=com.acme.CustomerDetails.class,
columns={
#ColumnResult(name="id"),
#ColumnResult(name="name"),
#ColumnResult(name="orderCount"),
#ColumnResult(name="avgOrder", type=Double.class)})
})
If you don't like that approach you could use QLRM. Learn more about it here: https://github.com/simasch/qlrm
Related
I am trying to sort my table's content on the backend side, so I am sending org.springframework.data.domain.Pageable object to controller. It arrives correctly, but at the repository I am getting org.hibernate.hql.internal.ast.InvalidPathException. Somehow the field name I would use for sorting gets an org. package name infront of the filed name.
The Pageable object logged in the controller:
Page request [number: 0, size 10, sort: referenzNumber: DESC]
Exception in repository:
Invalid path: 'org.referenzNumber'","logger_name":"org.hibernate.hql.internal.ast.ErrorTracker","thread_name":"http-nio-8080-exec-2","level":"ERROR","level_value":40000,"stack_trace":"org.hibernate.hql.internal.ast.InvalidPathException: Invalid path: 'org.referenzNumber'\n\tat org.hibernate.hql.internal.ast.util.LiteralProcessor.lookupConstant(LiteralProcessor.java:111)
My controller endpoint:
#GetMapping(value = "/get-orders", params = { "page", "size" }, produces = { MediaType.APPLICATION_JSON_VALUE })
public ResponseEntity<PagedModel<KryptoOrder>> getOrders(
#ApiParam(name = "searchrequest", required = true) #Validated final OrderSearchRequest orderSearchRequest,
#PageableDefault(size = 500) final Pageable pageable, final BindingResult bindingResult,
final PagedResourcesAssembler<OrderVo> pagedResourcesAssembler) {
if (bindingResult.hasErrors()) {
return ResponseEntity.badRequest().build();
}
PagedModel<Order> orderPage = PagedModel.empty();
try {
var orderVoPage = orderPort.processOrderSearch(resourceMapper.toOrderSearchRequestVo(orderSearchRequest), pageable);
orderPage = pagedResourcesAssembler.toModel(orderVoPage, orderAssembler);
} catch (MissingRequiredField m) {
log.warn(RESPONSE_MISSING_REQUIRED_FIELD, m);
return ResponseEntity.badRequest().build();
}
return ResponseEntity.ok(orderPage);
}
the repository:
#Repository
public interface OrderRepository extends JpaRepository<Order, UUID> {
static final String SEARCH_ORDER = "SELECT o" //
+ " FROM Order o " //
+ " WHERE (cast(:partnerernumber as org.hibernate.type.IntegerType) is null or o.tradeBasis.account.retailpartner.partnerbank.partnerernumber = :partnerernumber)"
+ " and (cast(:accountnumber as org.hibernate.type.BigDecimalType) is null or o.tradeBasis.account.accountnumber = :accountnumber)"
+ " and (cast(:orderReference as org.hibernate.type.LongType) is null or o.tradeBasis.referenceNumber = :orderReference)"
+ " and (cast(:orderReferenceExtern as org.hibernate.type.StringType) is null or o.tradeBasis.kundenreferenceExternesFrontend = :orderReferenceExtern)"
+ " and (cast(:dateFrom as org.hibernate.type.DateType) is null or o.tradeBasis.timestamp > :dateFrom) "
+ " and (cast(:dateTo as org.hibernate.type.DateType) is null or o.tradeBasis.timestamp < :dateTo) ";
#Query(SEARCH_ORDER)
Page<Order> searchOrder(#Param("partnerernumber") Integer partnerernumber,
#Param("accountnumber") BigDecimal accountnumber, #Param("orderReference") Long orderReference,
#Param("orderReferenceExtern") String orderReferenceExtern, #Param("dateFrom") LocalDateTime dateFrom,
#Param("dateTo") LocalDateTime dateTo, Pageable pageable);
}
Update:
I removed the parameters from the sql query, and put them back one by one to see where it goes sideways. It seems as soon as the dates are involved the wierd "org." appears too.
Update 2:
If I change cast(:dateTo as org.hibernate.type.DateType) to cast(:dateFrom as date) then it appends the filed name with date. instead of org..
Thanks in advance for the help
My guess is, Spring Data is confused by the query you are using and can't properly append the order by clause to it. I would recommend you to use a Specification instead for your various filters. That will not only improve the performance of your queries because the database can better optimize queries, but will also make use of the JPA Criteria API behind the scenes, which requires no work from Spring Data to apply an order by specification.
Since your entity Order is named as the order by clause of HQL/SQL, my guess is that Spring Data tries to do something stupid with the string to determine the alias of the root entity.
I have a custom model for order and item that will hold minimum data than the actual entity class
Models
class OrderMinimalModel {
long id;
String comment;
List<ItemMinimalModel> items;
}
class ItemMinimalModel{
long id;
String name;
}
Query I am looking for
#Query( value = "SELECT O.id as orderId, O.comment as orderComment, I.id as itemId, I.name as itemName FROM order O "
+ " left join item I on I.order_id = O.id"
+ " WHERE O.status = 1 ",nativeQuery = true)
List<OrderMinimalModel > findAllOrderMinimal();
But I am getting bellow error
org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [org.springframework.data.jpa.repository.query.AbstractJpaQuery$TupleConverter$TupleBackedMap] to type [com.example.model.OrderMinimalModel]
Maybe I am doing wrong.
I have to extract data for statistic purpose. I've created a native query and used #SqlResultSetMapping to map the resultset to an object.
Hibernate needs to declare this class (Elaboration) as #Entity BUT IS NOT A TABLE, and I don't want a table because I have only to extract data on the fly when needed.
The code works fine but the gitlab pipeline fails during validation with
schemaManagementException: Schema-validation: missing table [elaboration].
Here my code so far:
SqlResultSetMapping(name="ValueMapping",
classes={
#ConstructorResult(
targetClass=Elaboration.class,
columns={
#ColumnResult(name="areadesc", type=String.class),
#ColumnResult(name="subsectordesc", type=String.class),
#ColumnResult(name="eurovalue", type=BigDecimal.class),
#ColumnResult(name="eurotch", type=BigDecimal.class),
}
)
})
#Entity
public class Elaboration{
#Id
private Long id;
private String areadesc;
private String subsectordesc;
private Integer dossiercount;
private BigDecimal eurovalue;
private BigDecimal eurotch;
....
and the custom query:
String statisticValueQuery = "select a.mdescr as areadesc, s.mdescr as subsectordesc, sum(euro_value) as eurovalue,
sum(euro_value_tch) as eurotch " +
"from dossier d " +
"join dossier_document dd on d.id = dd.dossier_id " +
"join dossier_country dc on d.id = dc.dossier_id " +
"join country c on dc.country_id = c.id " +
"join area a on c.area_id = a.id " +
"join dossier_subsector ds on d.id = ds.dossier_id " +
"join subsector s on ds.subsector_id = s.id " +
"where dd.document_id = :document " +
"and d.submission_date >= :startdate and d.submission_date <= :enddate " +
"group by s.id, a.id;";
public List<Elaboration> getValueElaboration(ElaborationRequestDTO elaborationRequestDTO){
Query resultMapping = em.createNativeQuery(statisticValueQuery, "ValueMapping");
resultMapping.setParameter("startdate", elaborationRequestDTO.getElaborateFromEquals());
resultMapping.setParameter("enddate", elaborationRequestDTO.getElaborateToEquals());
resultMapping.setParameter("document", elaborationRequestDTO.getDocumentIdEquals());
return resultMapping.getResultList();
Is there a way to pass the validation test?
Thanks
This is wrong statement.
Hibernate needs to declare this class (Elaboration) as #Entity
You should just put your #SqlResultSetMapping declaration above some #Entity but it can be some other entity not related to the Elaboration.
#SqlResultSetMapping(name="ValueMapping",
classes={
#ConstructorResult(
targetClass=Elaboration.class,
columns={
#ColumnResult(name="areadesc", type=String.class),
#ColumnResult(name="subsectordesc", type=String.class),
#ColumnResult(name="eurovalue", type=BigDecimal.class),
#ColumnResult(name="eurotch", type=BigDecimal.class),
}
)
})
#Entity
public class SomeEntity {
}
And if Elaboration is not an entity you should not annotate it as such.
I am a JPA newbie and wanted to have a JPA native query for a single table (below) which I would like to fetch in my #Entity based class called TestRequest. It has a column 'RequestTime' that is fetched with DAYNAME() and then with DATEDIFF() functions.
SELECT TestRequest.Id AS Id
, TestRequest.RequestTime AS RequestTime
, DAYNAME(TestRequest.RequestTime) AS RequestDay
, TestRequest.StatusMessage AS StatusMessage
, DATEDIFF(CURDATE(), TestRequest.RequestTime) AS HowLongAgo
FROM TestRequest
LEFT JOIN TestRun
ON TestRequest.TestRunId = TestRun.Id
WHERE Requestor = '[NAME]'
ORDER BY Id DESC
Is there any way in which the column (fetched second time as HowLongAgo) be set into a property which is not mapped to a table column within the TestRequest class? Are there any field level annotations for this?
You need to use Interface-based projections:
You will need to create an interface that define the getters for each field in your projection like:
public interface RequestJoinRunProjection {
int getId();
LocalDate getRequestTime();
String getMessage();
String getRequestDay();
Long getHowLongAgo();
}
Then you define a method on your Repository that has the native query you want to run:
public interface TestRequestRepository extends CrudRepository<TestRequest, Long> {
// Any other custom method for TestRequest entity
#Query(value = "SELECT trq.Id AS id " +
" , trq.RequestTime AS requestTime " +
" , DAYNAME(trq.RequestTime) AS requestDay " +
" , trq.StatusMessage AS statusMessage " +
" , DATEDIFF(YEAR, CURDATE(), trq.RequestTime) AS howLongAgo " +
"FROM TestRequest trq " +
" LEFT JOIN TestRun tr " +
" ON trq.TestRunId = tr.Id " +
"WHERE Requestor = ?1 ORDER BY Id DESC"), nativeQuery = true)
List<RequestJoinRunProjection> findTestSumary(String name);
}
Notice query must be native since you are using database functions, also the column names must match the setters of your projection interface(following bean rules), so use AS in order to change the names in your query.
I strongly suggest you test your query on h2 before injecting into #Query annotation. DATEDIFF requires 3 parameters.
Assume I have those DTO:
public interface ForumDTO extends ForumBaseDTO{
Integer getId();
ThreadDTO getLastThread();
}
public interface ThreadDTO {
Integer getId();
Integer getCommentCount()
}
In my Repository I have this query using those DTO as projection:
#Query("select forum.id as id, " +
"forum.name as name, " +
"lastThread.id as lastThread_id " +
"from Forum forum " +
"inner join forum.lastThread as lastThread " +
"where forum.parent.id = ?:"
)
Iterable<ForumDTO> findAllByParentId(Integer id);
I can access id,name in ForumDTO using this repo just fine, but with lastThread it just return null. I have tried as lastThread.Id,as lastThread_id, as lastThreadId but none of them work.
You're almost there.
You need to access it from forum to follow out the foreign key:
#Query("select forum.id as id, " +
"forum.name as name, " +
"**forum.lastThread.id** as lastThread_id " +
"from Forum forum " +
"inner join forum.lastThread as lastThread " +
"where forum.parent.id = ?:"
)
Iterable<ForumDTO> findAllByParentId(Integer id);
That said, you're killing yourself with extra work.
The same Query can be written as:
#Query("select forum from Forum where forum.parent.id = :forumId")
Iterable<ForumDTO> findAllByParentId(#Param("forumId")Integer id);
You just need to make sure that the foreign key to Parent is present on the entity.
Also notice the #Param annotation. It makes your parameters easier to track, and also does some basic type checking against the db. It's very useful to prevent SQL injection attacks, and UncheckedTypeExceptions.