I have a Spring boot application. I need a feature to dynamically query the stored procedure. What I mean by dynamically,
#NamedNativeQuery(name = "getCustomFoo", query = "select * from SP_FOO_CUSTOM where id = 1", resultClass = Foo.class)
but id could be any attribute in result set, so it could change based on the users input;
#NamedNativeQuery(name = "getCustomFoo", query = "select * from SP_FOO_CUSTOM where fooid = 1 ", resultClass = Foo.class)
Is it possible to do something like this? or this is totally out of standards?
Related
here is the sql statement I am trying to translate in jpa :
select
id,
act_invalidation_id,
last_modification_date,
title,
case when act_invalidation_id is null then 1 else 0 end as test
from act order by test, last_modification_date desc
The actual translation
Root<Act> act = query.from(Act.class);
builder.selectCase()
.when(builder.isNull(actRoot.get("actInvalidation")), 1)
.otherwise(0).as(Integer.class);
Expression<?> actInvalidationPath = actRoot.get("actInvalidation");
Order byInvalidationOrder = builder.asc(actInvalidationPath);
Path<Date> publicationDate = actRoot.get("metadata").get("publicationDate");
Order byLastModificationDate = builder.desc(publicationDate);
query.select(act).orderBy(byInvalidationOrder, byLastModificationDate);
entityManager.createQuery(query).getResultList();
I try to create a temporary column (named test) of Integer type and orderby this column, then orderby lastmodificationdate. The content of this new column is determined by the value of actInvalidation field.
In short: How to create a temp column with integer values, then order by this temp column in jpa ?
Thank you
I didn't test this but it should work like this:
Root<Act> act = query.from(Act.class);
Expression<?> test = builder.selectCase()
.when(builder.isNull(actRoot.get("actInvalidation")), 1)
.otherwise(0).as(Integer.class);
Expression<?> actInvalidationPath = actRoot.get("actInvalidation");
Order byInvalidationOrder = builder.asc(actInvalidationPath);
Path<Date> publicationDate = actRoot.get("metadata").get("publicationDate");
Order byLastModificationDate = builder.desc(publicationDate);
Order byTest = builder.asc(test);
query.select(act).orderBy(byTest, byInvalidationOrder, byLastModificationDate);
entityManager.createQuery(query).getResultList();
now, i get list Units from Database:
var sections = scheduler.serverList("type");
scheduler.createUnitsView({
name:"unit",
property:"type",
list:sections
});
$list = new OptionsConnector($res, $dbtype);
$list->render_table("doctors","id","id(value),first_name(first_name),last_name(last_name),middle_name(middle_name),spec(spec),image(image)");
$scheduler = new schedulerConnector($res, $dbtype);
$scheduler->set_options("type", $list);
But i want some query from Database for this. No render all values from Databases, just result from "Select *******"
Is it possible? Render_sql? Thank you advance
you can use render_sql method for this:
$list = new OptionsConnector($res, $dbtype);
$list->render_sql(
"SELECT * FROM doctors WHERE someColumn > " .$list->sql->escape("someValue") . " AND anotherColumn < ". $list->sql->escape("anotherValue"),
"id",
"id(value),first_name(first_name),last_name(last_name),middle_name(middle_name),spec(spec),image(image)"
);
$scheduler = new schedulerConnector($res, $dbtype);
$scheduler->set_options("type", $list);
The first parameter takes the sql query, and the rest parameters are the same as in render_table.
Also note that connectors don't support parameterized queries, but you can use $connector->sql->escape method if you need to insert request values into the query
I am a novice to use jdbc and I have some problems.
I use hql to search data in MySQL, and the result is Query type. I don't know how to get the data from the "Query".This is my code:
final String hql = "select app.appkey,app.type from " + getClassName() +
"app where app.appkey<>'no-appkey' group by app.type";
Query query = getEntityManager().createQuery(hql);
Thanks a lot.
You have to do the following:
final String hql = "select app.appkey,app.type from " + getClassName() + " app where app.appkey<>'no-appkey' group by app.type";
Query query = getEntityManager().createQuery(hql);
query.list(); //or query.getSingleResult();
query.list() will give a list of results.
query.getSingleResult() will give you a object.
You can check this.
If you are expecting a list of results, so:
List<Object[]> results = query.getResultList();
If you are expect one single result:
Object[] result = query.getSingleResult(); // if more than one result was found, this method will throw a NonUniqueResultException
If column information will be stored in a position of the Object array. Example:
String appKey = (String) result[0];
String appType = (String) result[1];
But work with Object array is not good. Try to use Dto, like explained here.
I have four tables, with Date data type for the fields startingDate, EndingDate, and ApplyingDate.
I am using ADO.net Entity Framework.
I have written the following query to get the results, but I am getting the dates with the time, and I want only the date part.
I have used EntityFunctions.TuncateTime, but I am still getting same results.
Could anyone please suggest me, how to Get the date only ?
var leaveList = (from application in db.tbl_ApplicationData
join employee in db.tbl_EmployeeDetails
on application.UserName equals employee.UserName
join leaveType in db.tbl_LeaveType
on application.LeaveTypeId equals leaveType.LeaveTypeId
join status in db.tbl_Status
on application.ApplicationStatusId equals status.StatusId
where application.UserName == "100083"
select new
{
EmployeeName = employee.EmployeeName,
LeaveTypeID = leaveType.LeaveTypeName,
StartingDate = EntityFunctions.TruncateTime(application.StartingDate),
EndingDate = EntityFunctions.TruncateTime(application.EndingDate),
AppliedDate = EntityFunctions.TruncateTime(application.ApplyingDate),
NoOfDays = application.NoOfDays,
LeavePurpose = application.LeavePurpose,
LeaveStatus = status.StatusName
});
If your entity model is a System.DateTime, you can just use the DateTime methods when you are using your object:
select new {
EndingDate = application.EndingDate
};
var myValue = leaveList.EndingDate.Date;
Or if you want a string:
leaveList.EndingDate.ToShortDateString()
Is it possible to generate arbitrary where condtions SQL query through Jdbc template:
example:
If i pass value for 1 parameter (only name) : search by name
"select * from address where shopname = ?";
If i pass value for 2 parameter (name and city) - search by shopname and city:
"select * from address where shopname = ? and city = ?";
I have mupliple search fields. 7 fields. If user enters any combination. i have search only based on parameter. How to dynamically pass the parameters to the sql. Need snippet/Example how to achieve this.
What you want is some sort of criteria building api, which Hibernate has. Unfortunately, I don't think Spring's JdbcTemplate has any such facility. Others will correct me if I'm wrong...
Though as some guys already suggested that Hibernate is the best way of doing this, but still i think you can try this approach-
String sql = "select * from address where 1 = 1";
if(shopname != null)
sql += "and shopname = :shopname";
if(city!= null)
sql += "and city = :city";
and so on..and use NamedParameterJdbcTemplate
Spring Data and Hibernate have that kind of functionality. Though it might not be worth dragging in such big framework for your app.
You can try to check out SimpleJdbcInsert
http://docs.spring.io/spring/docs/current/spring-framework-reference/html/jdbc.html
Edit:
Alternatively you can try to fix it in SQL with checking on empty, but if you have lots of data to go through, this technique will slow down your request.
"select * from address
where (shopname = ? or shopname = null)
and (city = ? or city = null)";
If Scala is an option to you, the query could be constructed with something like this:
case class Search(shopname:String, city:String = None) {
def sql = "select * from address where shopname = '"+shopname+"'" + city.map(" and city = '"+
_ +"'").getOrElse("")
}
Example usage:
Search("lloh").sql
Search("lloh", Some("Austin")).sql