spring data jpa for multiple joined table -

-

i have 2 tables: productusage , learner. productusage have field learner, learner has fields id , guid. need create query pull out productusage learner guid in specified user ids:

sql:

select * product_usage  inner join learner on product_usage.learner_id = learner.id  learner.guid in ("1234", "2345")

domain class:

@data @noargsconstructor @entity @table(name = "core_product_usage_increments") public class productusage {     @id     @generatedvalue(strategy = generationtype.auto)     private integer id;      @manytoone     @joincolumn(name = "learner_id", nullable = false)     private learner learner;      @manytoone     @joincolumn(name = "learning_language_id", nullable = false)     private language language; }  @data @noargsconstructor @entity @table(name = "learners") public class learner {     @id     @generatedvalue(strategy = generationtype.auto)     private integer id;      @column(name = "user_guid", nullable = false, unique = true)     private string guid;      @column(name = "first_name")     private string firstname;      @column(name = "last_name")     private string lastname; }

and repository class:

@repository public interface productusagerepository extends crudrepository<productusage, integer> {     @query("select p productusage p p.learnerguid = :learnerguid")     list<productusage> findbylearnerguid(string learnerguid); }

client class call repository 

@component public class myclient {     @autowired     private productusagerepository repository;      public myclient(productusagerepository repository) {         this.repository = repository;     }      public list<productusage> getproductuagebyleanrerguid(string learnerguid) {         return repository.findbylearnerguid(learnerguid);     } }

and test:

@test     public void testclient() throws exception {         myclient client = new myclient(repository);         list<productusage> results = client.getproductuagebyleanrerguid("1234");         assertnotnull(result);     }

and failed:

caused by: java.lang.illegalargumentexception: org.hibernate.queryexception: not resolve property: learnerguid of: com.acme.domain.spectrum.productusage [select p com.acme.domain.spectrum.productusage p p.learnerguid = :learnerguid]     @ org.hibernate.ejb.abstractentitymanagerimpl.convert(abstractentitymanagerimpl.java:1364)     @ org.hibernate.ejb.abstractentitymanagerimpl.convert(abstractentitymanagerimpl.java:1300)     @ org.hibernate.ejb.abstractentitymanagerimpl.createquery(abstractentitymanagerimpl.java:294)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     @ java.lang.reflect.method.invoke(method.java:606)

it cannot recognize 'learnerguid' field in productusage, that's defined in learner class. how can perform query join multiple tables?

productusage has no learnerguid property, learner. try

@query("select p productusage p p.learner.guid = :learnerguid")

if doesn't work, have tip:

@query("select p productusage p join p.learner l l.guid = :learnerguid")

Comments

Post a Comment

Popular posts from this blog

javascript - Slick Slider width recalculation -

-
i'm trying add slide in panel on slick container css. carousel works except new width not being calculated when space has been added. recalibrate once advance next slide i'd happen each time panel opened or closed. i've tried adding both margin , padding, neither makes difference. ideas? https://jsfiddle.net/mhigley/dpf7mlpl/ html: <button type="button" id="button"><i class="fa fa-arrow-right"></i></button> <aside> <h2>slide in panel</h2> <ol> <li>list item</li> <li>list item</li> <li>list item</li> <li>list item</li> <li>list item</li> </ol> </aside> <main role="main"> <div class="sections"> <section> <article> <h2>first slide</h2> <p>lorem ipsum d...
Read more

jsf - PrimeFaces Datatable - What is f:facet actually doing? -

-
looking through primefaces code in app noticed following line: <f:facet name="header">#{trainsearch.traincount} trains</f:facet> it looks overriding header, makes sense, can explain me in little more detail? what happening line of code? complete code listed below: <p:datatable id = "results" value = "#{trainsearch.trains}" var = "train" rendered="#{not empty trainsearch.trains}" styleclass = "train-search-table horizontal-border"> <f:facet name="header">#{trainsearch.traincount} trains</f:facet> <p:column headertext = "train id"> <p:panelgrid columns="1" styleclass = "train-id-grid" layout = "grid"> <h:outputtext styleclass = "train-id-label" value="#{train.traini}"/> <h:outputtex...
Read more

angular2 services - Angular 2 RC 4 Http post not firing -

-
i trying fire post request app , it's not working, tried multiple ways. don't see request being fired under network tab in chrome. not sure problem is, appreciated. import { injectable } '@angular/core'; import { http, headers } '@angular/http'; @injectable() export class userservice{ private _url="users"; constructor(private _http: http){ } checkifusernameexists(username){ return this._http.get(this._url+"/"+username) .map(response => response.json()) } createuser(user){ let headers = new headers(); headers.append('content-type', 'application/json') console.log(json.stringify(user)); return this._http.post(this._url, json.stringify(user),{headers: headers}) .map(response => response.json()) } } first need capture error , solve error: this._http.post(this._url, json.stringify(user),{headers: headers}) .subscribe( ...
Read more