spring data jpa - How to have a @Query with a possibly null parameter -

-

I have a @Query that gives me the problem I want to get all the webpages Those who have a given parent, even if given given parents father.

Parents can be set but it can not be set too.

I is trying this: 

  @Query ("Choose from wp = wp = parent: parent (or parent: parent.id & lt; '1')) order by w.listOrder ") public page & lt; Webpage & gt; FindByParent (@Param ("parent") webpage parents, page creation page);

and this: 

  @Query ("Select from the webpage where w.parent =: the parent (or the guardian is parent and the parent) )) Order by w.listOrder ") public page & lt; Webpage & gt; FindByParent (@Param ("parent") webpage parents, page creation page);

But I get an exception: 

  By: java.lang.IllegalArgumentException: The method failed to validate the query for the public abstract. Com. Thalasoft.learnintouch Data.jpa.domain.Webpage com.thalasoft.learnintouch.data.jpa.repository.WebpageRepository.findByParentAndNameAndGarbage (com.thalasoft.learnintouch.data.jpa.domain.Webpage, java.lang.String)!

I am using spring 3.2.9 .RELEASE and spring-data-JPA 1.6.1 .RELEASE version.

How can I choose but any thoughts given to a given parent, even if my parents tap?

Type of relationship,

Stephen Ibr

if Verification on the provider will not allow you to pass through the tap, you can divide the query into two.

Query1 (not the ultimate faucet): To call you for the @Query ("SELECT w FROM)" you must have the log in the caller.WebPage y WHERE w .parent =: w.listOrder "by parent ORDER") public page & lt; Webpage & gt; FindByParent (@Param ("parent") webpage parents, page creation page);

Question 2 (the ultimate one is out): 

  @Query (choose "w parent null command w.listOrder" from the webpage w) public page & lt ; Webpage & gt; FindByNullParent (page creation page);

I recommend reading some more documents on my provider how to enter the tap.


Comments

Post a Comment

Popular posts from this blog

java - org.apache.http.ProtocolException: Target host is not specified -

-
I have written a simple httprequest / response code and I am getting this error below: I used to type in my classpath httpclient, httpcore, common -Codecs and general logging. I am very new to Java and I do not know what's going on here. Please help me. code: import org.apache.http.client.HttpClient; Import org.apache.http.client.methods.HttpGet; Import org.apache.http.HttpResponse; Import org.apache.http.impl.client.HttpClientBuilder; Import org.apache.http.Header; Import org.apache.http.HttpHeaders; Public class UnshorteningUrl {public static zero main (string [] args throws exception {HttpGet request = zero; HTTP Client Client = HTTP ClientBuilder.credit (). Build (); Try {Request = New HTTP Gate ("trib.me/1lBFzSi"); HttpResponse httpResponse = client.execute (request); Header [] header = httpResponse.getHeaders (HttpHeaders.LOCATION); // Preconditions.checkState (headers.length == 1); String new url = header [0] .getValue (); System.out.println ("new url...
Read more

java - Gradle dependencies: compile project by relative path -

-
Is it possible to specify a dependency on another gradeal project in the granular (in android studios) outside the current project limits? For example, with a relative path like this: dependence {collection project ('../../ stdlib / dagger'}} MyApp (path / user / foo / workspace / mypad) The app (Path / User / Foo / Workspace / MyPass / App) And I have an Android Library Project with 3 subdomules: stdlib (path is / user / foo / Utilities (Path / User / Foo / Workspace / Stadlib / Utilis) http (Path / User / Foo / Workspace / Stadlib / HT) / Li> What I have to do is compile the Dagger, Util, http module in the MyApp project. The Stidelib Library module under heavy development And MyApp will grow in the form of Growth, so I do not want to push them into a Mewen repository. I am a little change. is likely to add another Gredle projects in some way? I will push the study library into the Maven repository after the source is in search of a temp...
Read more

ruby on rails - Object doesn't support #inspect when used with .include -

-
So I have participated in a glitch error that I do not even know how to debug. I am very new to the railing, so it has kicked my ass well when I use the .includes (school) seen by the student, it gives a blue box error, But when I look at any other model and .includes (school) , the school works just fine. class student & lt; ActiveRecord :: Base has has_many: relationships, foreign_key: "liker_id", dependent :: has_many: matches, foreign_key: "student_1_id", dependent :: deleted belong_to: school belong_to: conference belong_to: would_you_rather belong_to: home city belong_to: year is_to: Major and class school & lt; on the console activatecord :: Affiliate for the base: conference includes: respondent, class: "school", foreign_key: "rival_id" (e.g. For: School) Select SQL generated Select "School". * "School" from "school" "ID" IN (1) error message back NoMethodError: u...
Read more