I need to fetch list of data from collection by using MongoRepository without using #Query.
I tried like below in my repository.
List findByFirstNameAll(Set firstName);
But when I give like above getting error like Invalid derived query! No property all found for type String! Traversed path:
But if I define a method with In its not complaining.
List findByFirstNameIn(Set firstName);
I need to use MongoDB All operator instead of In.
Related
What I'm doing now:
I have a table with one field that is a json value that is stored as a super type in my staging schema.
the field containing the json is called elements
In my clean table, I typecast this field to VARCHAR in order to search it and use string functions
I want to search for the string net within that json in order to determine the key/value that I want to use for my filter
I tried the following:
select
elements
, elements_raw
from clean.events
where 1=1
and lower(elements) like '%net%'
or strpos(elements,'net')
My output
When running the above query, I keep getting an empty set returned.
My issue
I tried running the above code and using the elements_raw value instead but I got an issue :ERROR: function strpos(super, "unknown") does not exist Hint: No function matches the given name and argument types. You may need to add explicit type casts.
I checked the redshift super page and it doesn't list any specifics on searching strings within super types
Desired result:
Perform string operations on super field
Cast super field to a string type
There are some super related idiosyncrasies that are being run into here:
You cannot change the type of a super field via :: or cast()
String functions like and strpos do not work on super types
To address both of these issues, you can use the function json_serialize to return your super as a string.
I have created an empty lists using
var lift = mutableListOf<Any(mutableListOf<Any(),mutableListOf<Any>())
But
lift[0].add(1)
Gives me error.
How to add elements to list inside list
The problem is that you have upcast the list type to Any instead of MutableList<Any>.
If you just typed:
mutableListOf(mutableListOf<Any>(),mutableListOf<Any>())
the type of items in the list is implicitly MutableList<Any>. But since you added <Any> like this:
mutableListOf<Any>(mutableListOf<Any>(),mutableListOf<Any>())
the compiler treats retrieved items as type Any instead of the specific type MutableList<Any> so you can't call functions on them.
You could also explicitly state the type like this, but it is not necessary:
mutableListOf<MutableList<Any>>(mutableListOf<Any>(),mutableListOf<Any>())
Try this:
val lift: MutableList<MutableList<Any>> = mutableListOf<MutableList<Any>>(mutableListOf<Any>(),mutableListOf<Any>())
I'm trying to access a FlowVar name dynamically in DataWeave.
For example:
I have a flowVars named taxInfo123. This is a linked list and my applicant.ApplicantID = 123
In my dataweave, I want to access this dynamically. Something like the following:
"TaxInfo": flowVars.'taxInfo'+applicant.ApplicantID map ((taxIdentificationDetail , indexOfTaxIdentificationDetail) -> {
This obviously doesn't work, and I'm hoping this is possible and I just need the correct syntax.
If you need to dynamically create the variable name, you can use the flowVars[key] syntax instead of the flowVars.key syntax. In your scenario:
"TaxInfo": flowVars[('taxInfo' ++ (flowVars.applicant.ApplicantID as :string))]
I assumed applicant was also a flowVar but you could just as easily use payload.applicant.ApplicantID or whatever your situation calls for. I also assumed it was a number so I had to cast it as a string.
When you use this syntax you want to make sure you wrap the key expression in parenthesis so it is evaluated first and then the flowVar is resolved.
So to summarize:
If you know the variable name is 'taxInfo123' -
flowVars.taxInfo123 or flowVars[taxInfo123] are both valid
If you need to create the variable name dynamically -
flowVars[(expression)]
Hope that helps!
Forming the variable name needs append operator like ++. Please go through the MuleSoft documentation for Dataweave operators to get better understanding of how much flexiblity is possible in Dataweave.
https://docs.mulesoft.com/mule-user-guide/v/3.8/dataweave-operators
I am filtering PrimeFaces DataTables using dynamic filters.I have this working using Spring org.springframework.data.jpa.domain.Specification.Now I am wondring how to do the same using QueryDSL.
Using specification I can use javax.persistence.criteria.Root to get a javax.persistence.criteria.Join, use javax.persistence.criteria.Expression.as(Class<String> type) to cast it to String and finally use javax.persistence.criteria.CriteriaBuilder.like(Expression<String> x, String pattern, char escapeChar).
How do I do the same in QueryDSL ? I can get PathBuilder using new PathBuilder<T>(clazz, "entity") (do you really have to use the variable here? I would like my class to be generic...) but then the com.mysema.query.types.path.PathBuilder.get(String property) returns new PathBuilder instead of an Expression.
If I try to use com.mysema.query.types.path.PathBuilder.getString(String property) I get java.lang.IllegalArgumentException: Parameter value [1] did not match expected type [java.lang.Integer].
Seems like the part I am missing is the cast.
I'm quite sure someone was dealing with the same thing already.
Thanks.
Edit: Stack trace for IllegalArgumentException
Trying to search for text "1" inside integer column using com.mysema.query.types.path.PathBuilder.getString(String property) - that's where I need the cast to happen :
Caused by: java.lang.IllegalArgumentException: Parameter value [1] did not match expected type [java.lang.Integer]
at org.hibernate.ejb.AbstractQueryImpl.validateParameterBinding(AbstractQueryImpl.java:375)
at org.hibernate.ejb.AbstractQueryImpl.registerParameterBinding(AbstractQueryImpl.java:348)
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:375)
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:442)
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:72)
at com.mysema.query.jpa.impl.JPAUtil.setConstants(JPAUtil.java:44)
at com.mysema.query.jpa.impl.AbstractJPAQuery.createQuery(AbstractJPAQuery.java:130)
at com.mysema.query.jpa.impl.AbstractJPAQuery.createQuery(AbstractJPAQuery.java:97)
at com.mysema.query.jpa.impl.AbstractJPAQuery.list(AbstractJPAQuery.java:240)
at org.springframework.data.jpa.repository.support.QueryDslJpaRepository.findAll(QueryDslJpaRepository.java:102)
...
To get a valid condition you will need to take the types of the properties into account, e.g.
pathBuilder.getNumber(Integer.class, property).stringValue().like(likePattern)
I was researching a similar topic until I came across this aged question. I hope my answer will be helpful to some.
I think the possible solution lies (exclusively) outside of QueryDSL. You can use common Java reflection to obtain the field type, something like
Class type = clazz.getDeclaredField(criteria.getKey()).getType();
// don't forget to catch exception if field doesn't exist ..
switch(type.getSimpleName()) {
case "String":
StringExpression exp = entityPath.getString(...);
}
That way you can have a reasonably dynamic implementation.
I found it really cool that in Groovy SQL it is possible to do this:
def resultList = Domain.executeQuery('select * from languages where name = :name', [name: 'Groovy'])
I am trying to get the HQL "in" keyword to work with a dynamic list used as the argument, not a fixed list.
I also know that you can use the "?" operator for your SQL parameters instead of using named parameters. However according to this question:
Doing an "IN" query with Hibernate
The "in" keyword only supports named and positional parameters, not the "?" parameter. The problem is, when I try to do something like this:
def paramMap = [:]
paramMap.put("name", "groovy")
def resultList = Domain.executeQuery('select * from languages where name = :name', paramMap)
I get an error saying that I have not specified the parameter name. So it is acting as if I have not actually specified the parameter "name". I have read the Groovy documentation on named parameters here:
http://groovy.codehaus.org/api/groovy/sql/Sql.html
But all of the examples using named parameters use a predefined parameter list. I have searched and have not found an example of using a dynamic parameter list map. How can I pass a dynamic map of parameters into Groovy named SQL query? If that is not possible, how can I use the "in" keyword with a dynamic list?
To be clear, I am constructing a dynamic SQL query and I would like to be able to add parameters to a map or list as I go along. I was previously using the "?" operator until I had to use the "in" clause, which does not work with "?".
Why not try find all with closures?
def paramMap = [:]
paramMap.put("name", "groovy")
def resultList = Domain.findAll {
paramMap.containsValue(name)
}
Here's the docs, hopefully it helps! http://grails.org/doc/latest/ref/Domain%20Classes/findAll.html