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POUsing @ElementCollection in CriteriaQuery (or Querying over the content of an @ElementCollection)
 

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    <pre><code>public enum ReportStatus { SUCCCEED, FAILED; } public class Work { @ElementCollection @Enumerated(EnumType.STRING) List&lt;ReportStatus&gt; reportStatuses; } </code></pre> <p>Given the following structure, I'd like to perform a query to find all the work filtered by reportStatuses. It works fine with the following hql syntax :</p> <pre><code>public List&lt;Long&gt; queryHQL() { final String query = "SELECT w.id FROM Work w JOIN w.reportStatuses s WHERE s in (:rs)"; final List&lt;ReportStatus&gt; reportStatuses = new ArrayList&lt;ReportStatus&gt;(); reportStatuses.add(ReportStatus.FAILED); return this.entityManager.createQuery(query).setParameter("rs", reportStatuses).getResultList(); } </code></pre> <p>But I'd like to use the criteria API (jpa2), and can't figure out how to do it. Here is my closest try I think :</p> <pre><code>public List&lt;Long&gt; query() { final List&lt;ReportStatus&gt; reportStatuses = new ArrayList&lt;ReportStatus&gt;(); reportStatuses.add(ReportStatus.FAILED); final CriteriaBuilder builder = this.entityManager.getCriteriaBuilder(); final CriteriaQuery&lt;Long&gt; criteriaQuery = builder.createQuery(Long.class); final Root&lt;Work&gt; workModel = criteriaQuery.from(Work.class); final ListJoin&lt;Work, ReportStatus&gt; status = workModel.joinList("reportStatuses"); final Predicate predicate = status.in(reportStatuses); criteriaQuery.where(predicate); criteriaQuery.select(workModel.&lt;Long&gt; get("id")); return this.entityManager.createQuery(criteriaQuery).getResultList(); } </code></pre> <p>I've also tried with the hibernate criteria API, but as the jpa2 one I've failed to find the correct the syntax.</p>
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    1. USɭɘ ɖɵʊɒɼɖ 江戸
    1. USRaphaël Brugier
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    1. COël check the updated answer.
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      1. USDipesh Rathod
 

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