I'm trying to build a query for all orders which were created today.
My Order-Entity has a datetime field like this:
#Column(name = "OrderCreationDate")
#Temporal(TemporalType.TIMESTAMP)
private Date orderCreationDate;
Named-Query:
#NamedQuery(name = "OrderHeader.findByOrderCreationDate", query = "SELECT o FROM OrderHeader o WHERE o.orderCreationDate = :orderCreationDate")
I tried to build the query like this:
public List<OrderHeader> findFromToday() {
Date dateToday = new Date();
TypedQuery<OrderHeader> query = em.createNamedQuery("OrderHeader.findByOrderCreationDate", OrderHeader.class).setParameter("orderCreationDate", dateToday);
return query.getResultList();
}
Of course the ResultList is empty since the date AND time would have to match.
Unfortunately I need the time in my database, so the orderCreationDate needs to stay datetime/timestamp.
So how can I query for a specific date, ignoring the time?
thanks!
Your call to setParameter needs to pass in the temporal type argument also, defining what to use for comparison.
http://www.datanucleus.org/javadocs/javax.persistence/2.1/javax/persistence/Query.html#setParameter-java.lang.String-java.util.Date-javax.persistence.TemporalType-
Related
I have entity Ticket which has a field nextActionDate as Date/Timestamp.
I am heavily unclear how to select all records which are due to an update, i.e. is either now or in the past (with additional parameters).
In my JPARepository I want to annotate the method like
#Query("FROM Ticket t WHERE ... AND !t.nextActionDate.after(new Date())")
List<Ticket> findOpenedMail();
But this fails with expecting '=', found 't'. Also I am not sure if new Date() will be calculated at the time of query - or already pre-prepared when the Bean is created.
So, what is the correct syntax?
You can pass date parameter and use <, > operators in your query:
#Query("FROM Ticket t WHERE ... AND t.nextActionDate < :nextDate ")
List<Ticket> findOpenedMail(#Param("nextDate") Date nextDate);
and call yourRepository.findOpenedMail(new Date());
If you are using mysql you can try annother aproach by changing the date type to Long and save your date in seconds/milliseconds and use the mysql function UNIX_TIMESTAMP(NOW()) (now() is optional) in nativeQuery.
#Query(value = "select * from ticket t where... and t.next_action_date < UNIX_TIMESTAMP()", nativeQuery = true)
List<Ticket> findOpenedMail();
UNIX_TIMESTAMP() will return the current date in seconds.
I am trying to find all rows before a certain date using mongoTemplate in Spring Java. This is returning no rows though there are lots of old records.
What is the problem?
Calendar cal = GregorianCalendar.getInstance();
cal.add( Calendar.DAY_OF_YEAR, -73);
Date prevDate = cal.getTime();
List<AuditTrailDTO> dt = mongoTemplate.find(Query.query(Criteria.where("AUDIT_CREATE_DATETIME").lte(prevDate)), AuditTrailDTO.class);
AUDIT_CREATE_DATETIME in Mongo DB is stored in this format:
Audit_Create_DateTime:2019-07-10 08:47:02.078
It should work if the type of Audit_Create_DateTime is Date, so I assume Audit_Create_DateTime is of String type.
You can do the following to do a less-than-equals logic on a String field;
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
Query query = Query.query(Criteria.where("AUDIT_CREATE_DATETIME").lte(dateFormat.format(prevDate)));
List<AuditTrailDTO> dt = mongoTemplate.find(query, Customer.class);
which will return proper results, though I recommend properly storing Date values as correct type rather than in String type.
I want to rewrite this SQL query in JPA.
String hql = "SELECT date(created_at) AS cdate, sum(amount) AS amount, count(id) AS nooftransaction "
+ "FROM payment_transactions WHERE date(created_at)>=date(now()- interval 10 DAY) "
+ "AND date(created_at)<date(now()) GROUP BY date(created_at)";
TypedQuery<Merchants> query = entityManager.createQuery(hql, Merchants.class);
List<Merchants> merchants = query.getResultList();
Is there a way to rewrite the queries into JPA or I should use it as it is?
In situations like these, more often than not the best approach is to write a plain SQL view:
CREATE OR REPLACE VIEW payment_transactions_stats AS
SELECT date(created_at) AS cdate, sum(amount) AS amount, count(id) AS nooftransaction
FROM payment_transactions
WHERE date(created_at)>=date(now()- interval 10 DAY)
AND date(created_at)<date(now()) GROUP BY date(created_at);
And map it to an #Immutable entity. This approach works well when:
you have read only data
the view does not need parameters (in this case there are solutions as well which span from hacky to nice)
You provide no details about the classes and entities but it could be something like:
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery<Tuple> query = builder.createTupleQuery();
From<PaymentTransaction> tx = query.from(PaymentTransaction.class);
Expression<Long> sumAmount = builder.sum(tx.get("amount"));
Expression<Long> count = builder.count(tx.get("id"));
Expression<Date> createdAt = tx.get("created_at");
query.multiselect(createdAt, sumAmount, count);
query.where(builder.greaterThanOrEqualTo(createdAt, builder.function("DATEADD", "DAY", new Date(), builder.literal(-10))),
builder.lessThan(createdAt, new Date()));
query.groupBy(createdAt);
entityManager.createQuery(query).getResultList().stream()
.map(t -> new Merchants(t.get(0, Date.class), t.get(1, Long.class), t.get(2, Long.class)))
.collect(Collectors.toList());
It is better not to use JPA for complex queries like this. JPA are usually used for simple queries.
Since the question is tagged with spring-data-jpa, you could try using a Spring CRUDRepository on top of your table. In the CRUDRepository, write a custom method with the #Query annotation.
It's hard for me to formulate the entire query because I don't know the members of your Merchants class.
Alternatively you can set the nativeQuery = true for the #Query annotation and use actual DB query to solve your problem.
You can use below code
CriteriaBuilder qb = entityManager.getCriteriaBuilder();
CriteriaQuery cq = qb.createQuery();
Root paymentInstructionsRoot = cq.from(PaymentInstructions.class);
List<Predicate> predicates = new ArrayList<>();
predicates.add(qb.greaterThanOrEqualTo(path, fromDateRange));
predicates.add(qb.lessThanOrEqualTo(path, toDateRange));
Selection cdate = paymentInstructionsRoot.get(PaymentInstructions_.createdAt).alias("cdate");
Selection amount = qb.sum(paymentInstructionsRoot.get(PaymentInstructions_.amount))).alias("amount");
Selection nooftransaction = qb.count(paymentInstructionsRoot.get(PaymentInstructions_.id))).alias("nooftransaction");
Selection[] selectionExpression = {cdate, amount, nooftransaction};
Expression[] groupByExpression = {paymentInstructionsRoot.get(PaymentInstructions_.createdAt)};
cq.multiselect(selectionExpression).where(predicates.toArray(new Predicate[]{})).groupBy(groupByExpression).where(predicates.toArray(new Predicate[]{}));
List<PaymentInstructions> paymentInstructions = entityManager.createQuery(cq).getResultList();
In your Entity class that represents the 'payment_transactions' table, add the following:
#SqlResultSetMapping(
name = "PaymentTransaction.summaryMapping",
classes = {
#ConstructorResult(targetClass = PaymentTransactionSummary.class,
columns = {
#ColumnResult(name = "cdate")
, #ColumnResult(name = "amount")
, #ColumnResult(name = "nooftransaction")
})
}
)
Create a new pojo class named PaymentTransactionSummary (must match the name used above, or whatever name you choose, with member fields cdate, amount, and nooftransaction. Include a constructor that includes those three fields in the order listed above.
Then in your dao class, write this:
Query q = entityManager.createNativeQuery("your query string from above"
, "PaymentTransaction.summaryMapping");
List<PaymentTransactionSummary> results = q.getResultList();
I created a a query to only get 4 items from a row in a table which does not include the column cloth style, so i understand why i get the error, but how can i tell Spring Jpa or JPA it is on purpose. and i just want the id, name and color table ?
this is my code:
#RequestMapping(value = "/query/material",method = RequestMethod.GET)
public String QueryMaterialTable(HttpServletRequest request){
DataTableRequest<Material> dataTableInRQ = new DataTableRequest<Material>(request);
PaginationCriteria pagination = dataTableInRQ.getPaginationRequest();
String baseQuery = "SELECT id as id, time as time, name as name, color as color, price as price, (SELECT COUNT(1) FROM MATERIAL) AS totalrecords FROM MATERIAL";
String paginatedQuery = AppUtil.buildPaginatedQuery(baseQuery, pagination);
System.out.println(paginatedQuery);
Query query = entityManager.createNativeQuery(paginatedQuery, Material.class);
#SuppressWarnings("unchecked")
List<Material> materialList = query.getResultList();
DataTableResults<Material> dataTableResult = new DataTableResults<Material>();
dataTableResult.setDraw(dataTableInRQ.getDraw());
dataTableResult.setListOfDataObjects(materialList);
if (!AppUtil.isObjectEmpty(materialList)) {
dataTableResult.setRecordsTotal(String.valueOf(materialList.size())
);
if (dataTableInRQ.getPaginationRequest().isFilterByEmpty()) {
dataTableResult.setRecordsFiltered(String.valueOf(materialList.size()));
} else {
dataTableResult.setRecordsFiltered(String.valueOf(materialList.size()));
}
}
return new Gson().toJson(dataTableResult);
}
If I got the question right, your problem is with the following two lines:
Query query = entityManager.createNativeQuery(paginatedQuery, Material.class);
List<Material> materialList = query.getResultList();
You have various options to fix this:
provide a complete column list, i.e. provide the missing column in the SQL statement and just make them NULL;
Don't use Material but a new class that has the matching attributes.
Don't use a native query but JPQL and a constructor expression.
Use a ResultTransformer.
Use Spring Data and a Projection.
Use a Spring JdbcTemplate.
From the List of Orders, i need to collect dates which are past to requesteffDate and requesteffTime and take the maximum of the past dates.
function boolean dateCheck(Date effdt, Date efftm) {
String efffdt = new SimpleDateFormat("yyyyMMdd").format(effdt);
String effftm = new SimpleDateFormat("HHmm").format(efftm);
Date effdttm = new SimpleDateFormat("yyyyMMddHHmm").parse(efffdt + "" + effftm);
return effdttm.before(new Date());
}
rule "finding past maximum date"
when
$company : Company( $date:requesteffDate, $time:requesteffTime, $reqdt : requesteffDate.getTime(), $reqtm : requesteffTime.getTime() )
eval(dateCheck($date,$time))
accumulate(Orders( effectiveDate != null,
effdate:effectiveDate.getTime()<$reqdt),
maxEffDate:max(effdate))
then
//error
While doing this,
accumulate(Orders(effectiveDate!=null,
effdate:effectiveDate.getTime()<$reqdt),
maxEffDate:max(effdate))
I am getting maxEffDate as -9223372036854775808 which when converted is showing 1940
Same I have tried using min functionn it is showing 2262.
My class goes like this.
Class Company{
private Date requesteffDate;
private Date requesteffTime;
private Employee emp;
private List<Orders> orderlist;
}
Class Orders{
private Date effectiveDate;
private Date effectiveTime;
}
-9223372036854775808 is Long.MIN_VALUE. This is conclusive for indicating that the accumulate doesn't find any Orders.
Make sure that you insert some matching Orders facts.
Add a guard that the maxEffDate is != Long.MIN_VALUE.
Discontinue the usage of Date as a time-of-day value: Either use LocalDate and LocalTime or combine date and time into a single Date value.
Take care that conversions of date and time are not affected by your locale settings.