のEclipseLink - 基準クエリにサブクエリ（JPA）

Question

が与えられるように、以下の2つのテーブルを取る：（列taxId、taxValidSynonymIdと

TaxaobjTaxonId、列objIdと

1. ObjectsをtaxName分類群に分類群のための複数であることに注意してください）

Taxonが有効な場合、そのIDとvalidSynonymIdは同一です。それ以外の場合は異なります。あなたは「のみ」taxValidSynonymIdが

がどのように私はすべてのObjectsを得ることができ、有効な分類群のtaxIdで満たされているすべての分類群を見つける必要がある分類群のすべての同義語を検索するにはどこTaxonその同義語を含む与えられた名前を（持っていますか？ SQLで） これは数行（数分で行われます）

SELECT * 
FROM Objects 
WHERE objTaxonId IN (
    SELECT taxId 
    FROM Taxa 
    WHERE taxName LIKE 'Test Taxon 1' 
     OR taxSynIdTaxon IN(
     SELECT taxId 
     FROM Taxa 
     WHERE taxName LIKE 'Test Taxon 1' 
    ) 
) 

私は分類群とその同義語のリストを得るの内側部分を、うまくすることができました。分類群が一つの関係に多くのとしてマッピングされている（ターゲット・エンティティがTaxonImplある）

私の実際のアプリケーションのコード（：今、私はSubquery ...

String NAME_LIKE = "Test Taxon 1"; 
EntityManager em = EntityManagerProvider.getEntityManager("TestDB"); // get the EntityManager 
CriteriaBuilder cb = em.getCriteriaBuilder(); 
CriteriaQuery<TaxonImpl> cqObject = cb.createQuery(TaxonImpl.class);// 
Root<TaxonImpl> taxonRoot = cqObject.from(TaxonImpl.class);// 
Expression<String> taxon_name = taxonRoot.<String> get("taxName"); 
Predicate where = cb.equal(taxon_name, NAME_LIKE); 
// subquery 
Subquery<Integer> subQuery = cqObject.subquery(Integer.class); 
Root<TaxonImpl> subRoot = subQuery.from(clsImpl); 
subQuery.select(subRoot.<Integer> get("taxId")); 
subQuery.where(cb.equal(subRoot.<String> get("taxName"), NAME_LIKE)); 
where = cb.or(where, taxonRoot.get("taxValidSynonymId").in(subQuery)); 
cqObject.where(where); 
Query query = em.createQuery(cqObject); 
List<TaxonImpl> result = query.getResultList(); 

NOTEこのQueryを変換する必要がありますサブクエリから）は動的になりますので、Native Queryは私を助けません。

Answer 1

私はqueryにsubqueryを「変換」する方法を考え出したが、Eclipselink iはTaxonImplの結果に中をしようとしたときの2つのエラー

最初は、フィールド経由でのアクセスを禁止された私を投げた（私は最初に試してみました JPAに1しかしEclipselinkは奇妙な何かを生成：：。。、私のマッピングのようにファイルTaxonはので、この後、私はSQL 1を形成しようとした

Entityとしてマッピングされ

をエラーを取り出す

SELECT t0.objIdObject, t0.objAdminCreated, t0.objAdminCreator, t0.objAdminEdited, t0.objAdminEditor, t0.objAdminImport1, t0.objAdminImport2, t0.objAddBool1, t0.objAddBool2, t0.objAddBool3, t0.objAddBool4, t0.objAddBool5, t0.objAddDateTime1, t0.objAddDateTime2, t0.objCommonComments, t0.objCommonDescription, t0.objCommonKeywords, t0.objCommonName, t0.objCommonPublished, t0.objCommonPublishedAs, t0.objCommonStatus, t0.objCommonType, t0.objCommonTypustype, t0.objDetAccuracy, t0.objDetCf, t0.objDetComments, t0.objDetDate, t0.objDetMethod, t0.objDetResult, t0.objAddFloat1, t0.objAddFloat2, t0.objAddFloat3, t0.objAddFloat4, t0.objAddFloat5, t0.objEventAbundance, t0.objEventCollectionMethod, t0.objEventComments, t0.objEventMoreContacts, t0.objEventDateDay1, t0.objEventDate1, t0.objEventDateMonth1, t0.objEventDate2, t0.objEventDateUncertain, t0.objEventDateYear1, t0.objEventEcosystem, t0.objEventHabitat, t0.objEventNumber, t0.objEventPermission, t0.objEventSubstratum, t0.objEventTime1, t0.objEventTime2, t0.objEventWeekNumber, t0.objFlora, t0.objGuidObject, t0.objIOComments, t0.objIODeAccessed, t0.objAddInt1, t0.objAddInt2, t0.objAddInt3, t0.objAddInt4, t0.objAddInt5, t0.objStorageForeignNumber, t0.objStorageNumber, t0.objStorageNumberInCollection, t0.objStorageNumberOld, t0.objStorageNumberPrefix, t0.objAddLkp1, t0.objAddLkp10, t0.objAddLkp2, t0.objAddLkp3, t0.objAddLkp4, t0.objAddLkp5, t0.objAddLkp6, t0.objAddLkp7, t0.objAddLkp8, t0.objAddLkp9, t0.objAddLkpCs1, t0.objAddLkpCs10, t0.objAddLkpCs11, t0.objAddLkpCs12, t0.objAddLkpCs13, t0.objAddLkpCs14, t0.objAddLkpCs15, t0.objAddLkpCs2, t0.objAddLkpCs3, t0.objAddLkpCs4, t0.objAddLkpCs5, t0.objAddLkpCs6, t0.objAddLkpCs7, t0.objAddLkpCs8, t0.objAddLkpCs9, t0.objOriginAccessionDate, t0.objOriginAccessionNumber, t0.objOriginComments, t0.objOriginMoreContacts, t0.objOriginSource, t0.objOriginType, t0.objPreparationComments, t0.objPreparationDate, t0.objPreparationType, t0.objPropAdults, t0.objPropAge, t0.objPropAgeUnit, t0.objPropEggs, t0.objPropFemale, t0.objPropHeight, t0.objPropHeightUnit, t0.objPropJuveniles, t0.objPropLarvae, t0.objPropLength, t0.objPropLengthUnit, t0.objPropMale, t0.objPropObservation, t0.objPropObservationComments, t0.objPropPupae, t0.objPropSex, t0.objPropStadium, t0.objPropWeight, t0.objPropWeightUnit, t0.objPropWidth, t0.objPropWidthUnit, t0.objSiteComments, t0.objStorageComments, t0.objStorageContainerNumber, t0.objStorageContainerPieces, t0.objStorageContainerType, t0.objStorageLevel1, t0.objStorageLevel2, t0.objStorageLevel3, t0.objStorageLevel4, t0.objStorageLevel5, t0.objStorageNumberInContainer, t0.objstoragePieces, t0.objStorageValue, t0.objStorageValueUnit, t0.objAddText1, t0.objAddText10, t0.objAddText2, t0.objAddText3, t0.objAddText4, t0.objAddText5, t0.objAddText6, t0.objAddText7, t0.objAddText8, t0.objAddText9, t0.objIdCollection, t0.objCommonIdReference, t0.objDetIdContact, t0.objDetIdReference, t0.objEventIdContact, t0.objIdExcursion, t0.objOriginIdContact, t0.objPreparationIdContact, t0.objIdProject, t0.objSiteIdSite, t0.objdetIdTaxon 
FROM tObjects t0 
WHERE t0.objdetIdTaxon IN (
    SELECT t1.taxIdTaxon.t1.taxIdTaxon 
    FROM tTaxa t1 
    WHERE (t1.taxTaxonDisplay LIKE 'Test Taxon 1' 
     OR t1.taxSynIdTaxon IN (
     SELECT t2.taxSynIdTaxon 
     FROM tTaxa t2 
     WHERE t2.taxTaxonDisplay LIKE 'Test Taxon 1'))) 

：完全ながらくたである

SELECT t1.taxIdTaxon.t1.taxIdTaxon 

。あなたはintの型で関数を実行することはできません！ （？BUG）このエラーを解決する

は（まだ同じ結果を返します）新しい構文

SELECT t1.objIdObject, t1.objAdminCreated, t1.objAdminCreator, t1.objAdminEdited, t1.objAdminEditor, t1.objAdminImport1, t1.objAdminImport2, t1.objAddBool1, t1.objAddBool2, t1.objAddBool3, t1.objAddBool4, t1.objAddBool5, t1.objAddDateTime1, t1.objAddDateTime2, t1.objCommonComments, t1.objCommonDescription, t1.objCommonKeywords, t1.objCommonName, t1.objCommonPublished, t1.objCommonPublishedAs, t1.objCommonStatus, t1.objCommonType, t1.objCommonTypustype, t1.objDetAccuracy, t1.objDetCf, t1.objDetComments, t1.objDetDate, t1.objDetMethod, t1.objDetResult, t1.objAddFloat1, t1.objAddFloat2, t1.objAddFloat3, t1.objAddFloat4, t1.objAddFloat5, t1.objEventAbundance, t1.objEventCollectionMethod, t1.objEventComments, t1.objEventMoreContacts, t1.objEventDateDay1, t1.objEventDate1, t1.objEventDateMonth1, t1.objEventDate2, t1.objEventDateUncertain, t1.objEventDateYear1, t1.objEventEcosystem, t1.objEventHabitat, t1.objEventNumber, t1.objEventPermission, t1.objEventSubstratum, t1.objEventTime1, t1.objEventTime2, t1.objEventWeekNumber, t1.objFlora, t1.objGuidObject, t1.objIOComments, t1.objIODeAccessed, t1.objAddInt1, t1.objAddInt2, t1.objAddInt3, t1.objAddInt4, t1.objAddInt5, t1.objStorageForeignNumber, t1.objStorageNumber, t1.objStorageNumberInCollection, t1.objStorageNumberOld, t1.objStorageNumberPrefix, t1.objAddLkp1, t1.objAddLkp10, t1.objAddLkp2, t1.objAddLkp3, t1.objAddLkp4, t1.objAddLkp5, t1.objAddLkp6, t1.objAddLkp7, t1.objAddLkp8, t1.objAddLkp9, t1.objAddLkpCs1, t1.objAddLkpCs10, t1.objAddLkpCs11, t1.objAddLkpCs12, t1.objAddLkpCs13, t1.objAddLkpCs14, t1.objAddLkpCs15, t1.objAddLkpCs2, t1.objAddLkpCs3, t1.objAddLkpCs4, t1.objAddLkpCs5, t1.objAddLkpCs6, t1.objAddLkpCs7, t1.objAddLkpCs8, t1.objAddLkpCs9, t1.objOriginAccessionDate, t1.objOriginAccessionNumber, t1.objOriginComments, t1.objOriginMoreContacts, t1.objOriginSource, t1.objOriginType, t1.objPreparationComments, t1.objPreparationDate, t1.objPreparationType, t1.objPropAdults, t1.objPropAge, t1.objPropAgeUnit, t1.objPropEggs, t1.objPropFemale, t1.objPropHeight, t1.objPropHeightUnit, t1.objPropJuveniles, t1.objPropLarvae, t1.objPropLength, t1.objPropLengthUnit, t1.objPropMale, t1.objPropObservation, t1.objPropObservationComments, t1.objPropPupae, t1.objPropSex, t1.objPropStadium, t1.objPropWeight, t1.objPropWeightUnit, t1.objPropWidth, t1.objPropWidthUnit, t1.objSiteComments, t1.objStorageComments, t1.objStorageContainerNumber, t1.objStorageContainerPieces, t1.objStorageContainerType, t1.objStorageLevel1, t1.objStorageLevel2, t1.objStorageLevel3, t1.objStorageLevel4, t1.objStorageLevel5, t1.objStorageNumberInContainer, t1.objstoragePieces, t1.objStorageValue, t1.objStorageValueUnit, t1.objAddText1, t1.objAddText10, t1.objAddText2, t1.objAddText3, t1.objAddText4, t1.objAddText5, t1.objAddText6, t1.objAddText7, t1.objAddText8, t1.objAddText9, t1.objIdCollection, t1.objCommonIdReference, t1.objDetIdContact, t1.objDetIdReference, t1.objEventIdContact, t1.objIdExcursion, t1.objOriginIdContact, t1.objPreparationIdContact, t1.objIdProject, t1.objSiteIdSite, t1.objdetIdTaxon 
FROM tTaxa t0, tObjects t1 
WHERE (
    t0.taxIdTaxon IN (
     SELECT t2.taxIdTaxon 
     FROM tTaxa t2 
     WHERE (t2.taxTaxonDisplay LIKE 'Test Taxon 1' 
      OR t2.taxSynIdTaxon IN (
      SELECT t3.taxSynIdTaxon 
      FROM tTaxa t3 
      WHERE t3.taxTaxonDisplay LIKE 'Test Taxon 1' 
      ) 
     ) 
    ) AND (t0.taxIdTaxon = t1.objdetIdTaxon) 
) 

を導入し、これは私には奇妙に思えるが、それは働いている - そしてそれは私の代わりのクエリよりも高速で、含まれていますinner join

注：EclipselinkはJoinTypeを無視します。あなたが何を渡すかに関係なく、left outer joinがかかります。 （ドキュメンテーションは別のことを言っています！）

最終的に私はjoinとjoinless

private static Predicate addSynonymsWithJoins(Root<BioObjectImpl> r, CriteriaBuilder b, CriteriaQuery cq, 
     Attribute attr, Path path, Object value) { 
    Join taxJoin = r.join(BioObjectEnum.taxon.name(), JoinType.INNER); 

    Path<Object> taxValidSynonymId = taxJoin.get(TaxonEnum.validSynonymId.name()); 
    Subquery<TaxonImpl> innerSubquery = cq.subquery(TaxonImpl.class); 
    Root fromSubTax = innerSubquery.from(TaxonImpl.class); 
    innerSubquery.select(fromSubTax.<Integer> get(TaxonEnum.id.name())); 
    Predicate dynamic1 = cb.like(fromSubTax.get(TaxonEnum.name.name()), 
    NAME_LIKE); 
    innerSubquery.where(dynamic1); 
    Predicate dynamic2 = resolveComparator(b, attr, taxJoin.get(attr.getPropertyName()), attr.getValue());// 
    Predicate p = b.or(taxValidSynonymId.in(innerSubquery), dynamic2); 

    return p; 
} 

private static Predicate addSynonymsWithoutJoins(Root<BioObjectImpl> r, CriteriaBuilder b, CriteriaQuery cq, 
     Attribute attr, Path path, Object value) { 
    cq.select(r); 

    Path<Integer> objTaxonId = r.<Integer> get(BioObjectEnum.taxon.name()).get(TaxonEnum.id.name()); 

    Subquery<Integer> t2 = cq.subquery(Integer.class); 
    Root<TaxonImpl> t2fromTaxon = t2.from(TaxonImpl.class); 
    Path<Integer> t2taxId = t2fromTaxon.<Integer> get(TaxonEnum.validSynonymId.name()); 
    t2.select(t2taxId); 
    Predicate t2dynamicWhere = resolveComparator(b, attr, t2fromTaxon.get(attr.getPropertyName()), attr.getValue()); 
    t2.where(t2dynamicWhere); 

    Subquery<Integer> t1 = cq.subquery(Integer.class); 
    Root<TaxonImpl> t1fromTaxon = t1.from(TaxonImpl.class); 
    Predicate t1dynamicWhere = b.like(fromSubTax.get(TaxonEnum.name.name()), 
    NAME_LIKE); 
    Path<Integer> t1Select = t1fromTaxon.<Integer> get(TaxonEnum.id.name()); 

    t1.select(t1Select); 
    Path<Integer> t1TaxSynonymId = t1fromTaxon.<Integer> get(TaxonEnum.validSynonymId.name()); 
    t1dynamicWhere = b.or(t1dynamicWhere, t1TaxSynonymId.in(t2)); 
    t1.where(t1dynamicWhere); 

    Predicate where = objTaxonId.in(t1); 
    return where; 
} 

のための2つの例を提供