java - Hibernate Criteria API - adding a criterion: string should be in collection -

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i have following entity object

  @entity public class foobar {     ...     private list<string> uuids;     ... }

now i'd make criteria query fetch foobar pojos uuids list contains string "abc123", i'm not sure how make appropriate criterion.

i assume using version of hibernate implements jpa 2.0. here's jpa 2.0 solution should work compliant implementation.

please annotate uuids jpa's @elementcollection annotation. don't use hibernate's @collectionofelements mentioned in of other answer comments. latter has equivalent functionality being deprecated.

foobar.java approximately this:

@entity public class foobar implements serializable {      // might have other id     @id     private long id;      @elementcollection     private list<string> uuids;      // getters/setters, serialversionuid, ...  }

here's how can build criteriaquery select foobars uuids contain "abc123". 

public void getfoobars() { {     entitymanager em = ... // em injection, entitymanagerfactory, whatever      criteriabuilder b = em.getcriteriabuilder();     criteriaquery<foobar> cq = b.createquery(foobar.class);     root<foobar> foobar = cq.from(foobar.class);      typedquery<foobar> q = em.createquery(             cq.select(foobar)               .where(b.ismember("abc123", foobar.<list<string>>get("uuids"))));      (foobar f : q.getresultlist()) {         // stuff f, have "abc123" in uuids     } }

i made self-contained proof-of-concept program while playing this. can't push out right now. please comment if want poc pushed github.


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