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Creating query exception in JPA while creting custom query method

JPA repository throwing Error for custom query method:
org.h2.jdbc.JdbcSQLException: Table "NBMRBANKDTLSENTITY" not found; SQL statement:
select NBMRBankDtlsEntity from NBMRBankDtlsEntity where NBMRBankDtlsEntity.ipphId = ? [42102-191]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
Class :
#Repository
public interface NBMRBankDtlsRepository extends JpaRepository<NBMRBankDtlsEntity, Long> {
#Query(value ="select n from NBMRBankDtlsEntity n where n.ipphId = :ipphId",nativeQuery = true)
Optional<NBMRBankDtlsEntity> findByIPPHId(#Param("ipphId") Long ipphId);
}

The error message tells you: Table "NBMRBANKDTLSENTITY" not found. Therefore it probably doesn't exist. To fix this you'll have to create the table, manually through a script or through hibernates schema creation feature.

I am already creating a table also inserting the record, After that only i am calling this custom query method.
I have found the issue as i am using nativeQuery = true so it is expecting normal sql query to query DB directly not the java query which is creating issue. Now after changing below it works fine ,
#Query(value = "SELECT * from NB_MR_BANK_DTLS WHERE IPPH_ID = :ipphId",nativeQuery = true)
For java query we can use directly as it internally converts to SQL while querying the DB,
#Query(value = "select p from NBMRBankDtlsEntity p WHERE p.ipphId = :ipphId")

How does a native sql query bind fields to an entity instead of map

I tried to run native sql query with resulttransformer (AliasToBeanResultTransformer), it gives error like below.
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.ozpas.ozentegre.entity.EntDevirlog cannot be cast to java.util.Map
at org.hibernate.property.access.internal.PropertyAccessMapImpl$SetterImpl.set(PropertyAccessMapImpl.java:102)
at org.hibernate.transform.AliasToBeanResultTransformer.transformTuple(AliasToBeanResultTransformer.java:78)
By the way, my native sql query does not include all fields in the entity ( EntDevirlog ), there are only some fields in that entity. shall the query include all fields in the entity ?
as i understood, hibernate transforms result into a map object instead EntDevirlog entity. It uses PropertyAccessMapImpl. how can i solve this problem to get the result as a list ( arraylist ) ? thanks.
Session session = HibernateUtilMikro.getSessionFactory().openSession();
List<EntDevirlog> results = new ArrayList<EntDevirlog>();
Transaction tx = null;
String sql = "mynativequery";
SQLQuery query = session.createSQLQuery(sql);
query.setParameter("tarih", tarih);
query.setParameter("srmkodu", srmkodu);
query.setParameter("s1", EnumPanoislemtipleri.islem1.getValue());
query.setParameter("s2", EnumPanoislemtipleri.islem2.getValue());
query.setResultTransformer(new AliasToBeanResultTransformer(EntDevirlog.class));
results = query.list();
tx.commit();

Just use the quotes for the aliases
"select firstName as \"firstName\",
lastName as \"lastName\" from Employee"
Read for a more deeply explanation here:
mapping Hibernate query results to custom class?

Ebean query using setDistinct() does not work

I'm using an ebean query in the play! framework to find a list of records based on a distinct column. It seems like a pretty simple query but the problem is the ebean method setDistinct(true) isn't actually setting the query to distinct.
My query is:
List<Song> allSongs = Song.find.select("artistName").setDistinct(true).findList();
In my results I get duplicate artist names.
From what I've seen I believe this is the correct syntax but I could be wrong. I'd appreciate any help. Thank you.

I just faced the same issue out of the blue and can not figure it out. As hfs said its been fixed in a later version but if you are stuck for a while you can use
findSet()
So in your example use
List<Song> allSongs = Song.find.select("artistName").setDistinct(true).findSet();

According to issue #158: Add support for using setDistinct (by excluding id property from generated sql) on the Ebean bug tracker, the problem is that an ID column is added to the beginning of the select query implicitly. That makes the distinct keyword act on the ID column, which will always be distinct.
This is supposed to be fixed in Ebean 4.1.2.

As an alternative you can use a native SQL query (SqlQuery).
The mechanism is described here:
https://ebean-orm.github.io/apidocs/com/avaje/ebean/SqlQuery.html
This is from the documentation:
public interface SqlQuery
extends Serializable
Query object for performing native SQL queries that return SqlRow's.
Firstly note that you can use your own sql queries with entity beans by using the SqlSelect annotation. This should be your first approach when wanting to use your own SQL queries.
If ORM Mapping is too tight and constraining for your problem then SqlQuery could be a good approach.
The returned SqlRow objects are similar to a LinkedHashMap with some type conversion support added.
// its typically a good idea to use a named query
// and put the sql in the orm.xml instead of in your code
String sql = "select id, name from customer where name like :name and status_code = :status";
SqlQuery sqlQuery = Ebean.createSqlQuery(sql);
sqlQuery.setParameter("name", "Acme%");
sqlQuery.setParameter("status", "ACTIVE");
// execute the query returning a List of MapBean objects
List<SqlRow> list = sqlQuery.findList();

i have a solution for it:-
RawSql rawSql = RawSqlBuilder
.parse("SELECT distinct CASE WHEN PARENT_EQUIPMENT_NUMBER IS NULL THEN EQUIPMENT_NUMBER ELSE PARENT_EQUIPMENT_NUMBER END AS PARENT_EQUIPMENT_NUMBER " +
"FROM TOOLS_DETAILS").create();
Query<ToolsDetail> query = Ebean.find(ToolsDetail.class);
ExpressionList<ToolsDetail> expressionList = query.setRawSql(rawSql).where();//ToolsDetail.find.where();
if (StringUtils.isNotBlank(sortBy)) {
if (StringUtils.isNotBlank(sortMode) && sortMode.equals("descending")) {
expressionList.setOrderBy("LPAD("+sortBy+", 20) "+"desc");
//expressionList.orderBy().asc(sortBy);
}else if (StringUtils.isNotBlank(sortMode) && sortMode.equals("ascending")) {
expressionList.setOrderBy("LPAD("+sortBy+", 20) "+"asc");
// expressionList.orderBy().asc(sortBy);
} else {
expressionList.setOrderBy("LPAD("+sortBy+", 20) "+"desc");
}
}
if (StringUtils.isNotBlank(fullTextSearch)) {
fullTextSearch = fullTextSearch.replaceAll("\\*","%");
expressionList.disjunction()
.ilike("customerSerialNumber", fullTextSearch)
.ilike("organizationalReference", fullTextSearch)
.ilike("costCentre", fullTextSearch)
.ilike("inventoryKey", fullTextSearch)
.ilike("toolType", fullTextSearch);
}
//add filters for date range
String fromContractStartdate = Controller.request().getQueryString("fm_contract_start_date_from");
String toContractStartdate = Controller.request().getQueryString("fm_contract_start_date_to");
String fromContractEndtdate = Controller.request().getQueryString("fm_contract_end_date_from");
String toContractEnddate = Controller.request().getQueryString("fm_contract_end_date_to");
if(StringUtils.isNotBlank(fromContractStartdate) && StringUtils.isNotBlank(toContractStartdate))
{
Date fromSqlStartDate=new Date(AppUtils.convertStringToDate(fromContractStartdate).getTime());
Date toSqlStartDate=new Date(AppUtils.convertStringToDate(toContractStartdate).getTime());
expressionList.between("fmContractStartDate",fromSqlStartDate,toSqlStartDate);
}if(StringUtils.isNotBlank(fromContractEndtdate) && StringUtils.isNotBlank(toContractEnddate))
{
Date fromSqlEndDate=new Date(AppUtils.convertStringToDate(fromContractEndtdate).getTime());
Date toSqlEndDate=new Date(AppUtils.convertStringToDate(toContractEnddate).getTime());
expressionList.between("fmContractEndDate",fromSqlEndDate,toSqlEndDate);
}
PagedList pagedList = ToolsQueryFilter.getFilter().applyFilters(expressionList).findPagedList(pageNo-1, pageSize);
ToolsListCount toolsListCount = new ToolsListCount();
toolsListCount.setList(pagedList.getList());
toolsListCount.setCount(pagedList.getTotalRowCount());
return toolsListCount;

JPA 2.0 - NVARCHAR in native query

The project that I'm working on has the following setup: JPA 2.0 (Hibernate 4 implementation) and SQL Server 2008 R2.
I need to select some data from an SQL view. In order to do this I use a native query, but I ran into some problems with the NVARCHAR fields. Basically, when using this piece of code:
String sql = "SELECT v.text_field as address FROM SOME_CUSTOM_VIEW v
Query q = entityManager.createNativeQuery(sql,"ItemDetailsMapping");
List<Object[]> result = q.getResultList();
The ItemDetailsMapping is declared like:
#SqlResultSetMapping(name = "ItemDetailsMapping", columns = { #ColumnResult(name = "address") })
I get an exception saying:
org.springframework.orm.hibernate3.HibernateSystemException: No Dialect mapping for JDBC type: -9; nested exception is org.hibernate.MappingException: No Dialect mapping for JDBC type: -9
Type -9 is actually the NVARCHAR type, which we are extensively using throughout the application and it works perfectly when we are using non-native queries. Why is it not working with native queries? I even used a custom dialect and registered the type, but it's still not working.
Thanks a lot for your help

You have to associate the data type NVARCHAR to String.When using Hibernate via Session interface, you can explcitly set a type of result with addScalar() instead (also accessible via unwrap() in JPA 2.0):
So modify your code as below,
String sql = "SELECT v.text_field as address FROM SOME_CUSTOM_VIEW v"
Query q = entityManager.createNativeQuery(sql,"ItemDetailsMapping");
q.unwrap(SQLQuery.class).addScalar("address ", StringType.INSTANCE);
List<Object[]> result = q.getResultList();
Read here for more information.
(Edit 7/1/15 -- Added quotation mark for clarity)

You can do it like this:
String myquery = "select cast(t2.name as varchar) column_name from sys.objects t1 inner join sys.columns t2 on t2.object_id = t1.object_id"+
" left join sys.indexes t3 on t3.object_id = t1.object_id and t3.is_unique = 1 left join sys.index_columns t4 on t4.object_id = t1.object_id and t4.index_id = t3.index_id and t4.column_id = t2.column_id where (upper(t1.type) = 'U' or upper(t1.type) = 'V') and upper(schema_name(t1.schema_id)) = 'dbo' and upper(t1.name) = 'TEST'";

problem with HQL update

When I try to execute the following HQL query:
Query query = getSession().createQuery("update XYZ set status = 10");
query.executeUpdate();
I get this exception:
Exception in thread "main" org.hibernate.QueryException: query must begin with SELECT or FROM: update
EDIT:
I also tried following .But it doennot work either.
org.hibernate.Query query = getSession().createQuery("update XYZ t set t.status = 10");
EDIT2:
Making changes in hinbernate.cfg.xml solved my problem
Earlier i was using
setting hibernate.query.factory_class" = org.hibernate.hql.classic.ClassicQueryTranslatorFactor
Now am using following property
<property name="hibernate.query.factory_class">org.hibernate.hql.ast.ASTQueryTranslatorFactory</property>

Thats not an HQL query.
You want to import javax.persistence.Query which allows normal sql,
not org.hibernate.Query which works on entity objects.
If you want to use simple sql, you could also use PreparedStatement
However, if you really want to use hibernate, without taking advantage of entityobjects (totally defeating the point of using hibernate in the first place, imho) you could do it like this (reference docs):
String myUpdate = "update XYZ myAlias set myAlias.status = :newStatus";
// or String noAliasMyUpdate = "update XYZ set status = :newStatus";
int updatedEntities = getSession().createQuery(myUpdate) //or noAliasMyUpdate
.setInt( "newStatus", 10 )
.executeUpdate();

The question is thinking in SQL, when you should be thinking in objects:
XYZ xyz = new XYZ();
xyz.setStatus(10);
getSession().merge(xyz);

Try:
Query query = getSession().createQuery("update XYZ o set o.status = 10");
query.executeUpdate();
Take a look at this also.

Session sesssion = getSession(); //getter for session
For HQL :
String hql = "update Activity " +
"set startedOn = :taskStartedOn " +
"where id = :taskId";
Query query = session.createQuery(hql);
query.setDate("taskStartedOn",new Date());
query.setLong("taskId",1)
int rowCount = query.executeUpdate();
Here Activity is POJO.

Use
hibernate.query.factory_class = org.hibernate.hql.ast.ASTQueryTranslatorFactory
in hibernate.cfg.xml file to resolve exception:
org.hibernate.QueryException: query must begin with SELECT or FROM: update.....