Example usage for org.hibernate Criteria setResultTransformer

List of usage examples for org.hibernate Criteria setResultTransformer

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Introduction

In this page you can find the example usage for org.hibernate Criteria setResultTransformer.

Prototype

public Criteria setResultTransformer(ResultTransformer resultTransformer);

Source Link

Document

Set a strategy for handling the query results.

Usage

From source file:au.org.theark.report.model.dao.ReportDao.java

License:Open Source License

public List<PhenoDataSetFieldDetailsDataRow> getPhenoDataSetFieldDetailsList(
        PhenoDataSetFieldDetailsReportVO reportVO) {
    List<PhenoDataSetFieldDetailsDataRow> results = new ArrayList<PhenoDataSetFieldDetailsDataRow>();
    if (reportVO.getPhenoDataSetFieldDisplay() != null) {
        /*/*from ww w. jav  a 2s. c o  m*/
         * Following query returns customFields whether or not they are
         * associated with a customFieldGroups (via customFieldDisplay)
         */
        Criteria criteria = getSession().createCriteria(PhenoDataSetField.class, "pf");
        criteria.createAlias("phenoDatasetFieldDisplay", "pdfd", JoinType.LEFT_OUTER_JOIN); // Left join to CustomFieldDisplay
        criteria.createAlias("pdfd.phenoDatasetFieldGroup", "pdfg", JoinType.LEFT_OUTER_JOIN); // Left join to CustomFieldGroup
        criteria.createAlias("fieldType", "ft", JoinType.LEFT_OUTER_JOIN); // Left join to FieldType
        criteria.createAlias("unitType", "ut", JoinType.LEFT_OUTER_JOIN); // Left join to UnitType
        criteria.add(Restrictions.eq("pf.study", reportVO.getStudy()));
        ArkFunction function = iArkCommonService
                .getArkFunctionByName(au.org.theark.core.Constants.FUNCTION_KEY_VALUE_PHENO_COLLECTION);
        criteria.add(Restrictions.eq("pf.arkFunction", function));

        if (reportVO.getPhenoDataSetFieldDisplay().getPhenoDataSetGroup() != null) {
            criteria.add(Restrictions.eq("pdfg.id",
                    reportVO.getPhenoDataSetFieldDisplay().getPhenoDataSetGroup().getId()));
        }
        if (reportVO.getFieldDataAvailable()) {
            DetachedCriteria fieldDataCriteria = DetachedCriteria.forClass(PhenoDataSetData.class, "pd");
            // Join CustomFieldDisplay and PhenoData on ID FK
            fieldDataCriteria
                    .add(Property.forName("pdfd.id").eqProperty("pd." + "phenoDatasetFieldDisplay.id"));
            criteria.add(Subqueries.exists(
                    fieldDataCriteria.setProjection(Projections.property("pd.phenoDatasetFieldDisplay"))));
        }

        ProjectionList projectionList = Projections.projectionList();
        projectionList.add(Projections.property("pdfg.name"), "questionnaire");
        projectionList.add(Projections.property("pf.name"), "fieldName");
        projectionList.add(Projections.property("pf.description"), "description");
        projectionList.add(Projections.property("pf.minValue"), "minValue");
        projectionList.add(Projections.property("pf.maxValue"), "maxValue");
        projectionList.add(Projections.property("pf.encodedValues"), "encodedValues");
        projectionList.add(Projections.property("pf.missingValue"), "missingValue");
        projectionList.add(Projections.property("ut.name"), "units");
        projectionList.add(Projections.property("ft.name"), "type");

        criteria.setProjection(projectionList); // only return fields required for report
        criteria.setResultTransformer(Transformers.aliasToBean(PhenoDataSetFieldDetailsDataRow.class));
        criteria.addOrder(Order.asc("pdfg.id"));
        criteria.addOrder(Order.asc("pdfd.sequence"));
        results = criteria.list();
    }

    return results;
}

From source file:au.org.theark.report.model.dao.ReportDao.java

License:Open Source License

public List<ResearcherCostDataRow> getResearcherBillableItemTypeCostData(
        final ResearcherCostResportVO researcherCostResportVO) {
    List<ResearcherCostDataRow> results = new ArrayList<ResearcherCostDataRow>();
    Criteria criteria = getSession().createCriteria(BillableItem.class, "bi");
    criteria.createAlias("workRequest", "wr", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("billableItemType", "bit", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bit.billableItemTypeStatus", "bitst", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("wr.researcher", "re", JoinType.LEFT_OUTER_JOIN);

    criteria.add(Restrictions.eq("re.id", researcherCostResportVO.getResearcherId()));
    criteria.add(Restrictions.eq("bi.studyId", researcherCostResportVO.getStudyId()));
    criteria.add(Restrictions.eq("bi.invoice", researcherCostResportVO.getInvoice()));
    criteria.add(Restrictions.le("bi.commenceDate", researcherCostResportVO.getToDate()));
    criteria.add(Restrictions.ge("bi.commenceDate", researcherCostResportVO.getFromDate()));
    criteria.add(Restrictions.eq("bitst.name", "ACTIVE"));

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.groupProperty("bit.id"));
    projectionList.add(Projections.property("bit.itemName"), "costType");
    projectionList.add(Projections.sum("bi.totalCost"), "totalCost");
    projectionList.add(Projections.sum("bi.totalGST"), "totalGST");

    criteria.setProjection(projectionList); // only return fields required for report
    criteria.setResultTransformer(Transformers.aliasToBean(ResearcherCostDataRow.class));

    criteria.addOrder(Order.asc("bit.itemName"));
    results = criteria.list();/*  w w  w.  j  a v a2s . co  m*/
    return results;
}

From source file:au.org.theark.report.model.dao.ReportDao.java

License:Open Source License

public List<ResearcherDetailCostDataRow> getBillableItemDetailCostData(
        ResearcherCostResportVO researcherCostResportVO) {
    List<ResearcherDetailCostDataRow> results = new ArrayList<ResearcherDetailCostDataRow>();
    Criteria criteria = getSession().createCriteria(BillableItem.class, "bi");
    criteria.createAlias("workRequest", "wr", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("billableItemType", "bit", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("wr.researcher", "re", JoinType.LEFT_OUTER_JOIN);

    if (researcherCostResportVO.getResearcherId() != null) {
        criteria.add(Restrictions.eq("re.id", researcherCostResportVO.getResearcherId()));
    }/*from   w w w  .  j a  v  a  2s.c o m*/

    criteria.add(Restrictions.eq("bi.studyId", researcherCostResportVO.getStudyId()));
    criteria.add(Restrictions.eq("bi.invoice", researcherCostResportVO.getInvoice()));
    criteria.add(Restrictions.le("bi.commenceDate", researcherCostResportVO.getToDate()));
    criteria.add(Restrictions.ge("bi.commenceDate", researcherCostResportVO.getFromDate()));

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.property("bi.description"), "description");
    projectionList.add(Projections.property("bi.commenceDate"), "commencedDate");
    projectionList.add(Projections.property("bi.invoice"), "invoice");
    projectionList.add(Projections.property("bi.quantity"), "quantity");
    projectionList.add(Projections.property("bi.totalCost"), "totalAmount");
    projectionList.add(Projections.property("bi.totalGST"), "totalGST");
    projectionList.add(Projections.property("bit.itemName"), "itemType");
    projectionList.add(Projections.property("bit.id"), "typeId");
    projectionList.add(Projections.property("bit.quantityType"), "quantityType");
    projectionList.add(Projections.property("wr.gstAllow"), "gstAllowed");

    projectionList.add(Projections.property("wr.name"), "requestName");

    criteria.setProjection(projectionList); // only return fields required for report
    criteria.setResultTransformer(Transformers.aliasToBean(ResearcherDetailCostDataRow.class));
    criteria.addOrder(Order.asc("bit.id"));
    criteria.addOrder(Order.asc("bi.commenceDate"));
    results = criteria.list();
    return results;
}

From source file:au.org.theark.report.model.dao.ReportDao.java

License:Open Source License

public List<BiospecimenSummaryDataRow> getBiospecimenSummaryData(
        BiospecimenSummaryReportVO biospecimenSummaryReportVO) {
    List<BiospecimenSummaryDataRow> results = new ArrayList<BiospecimenSummaryDataRow>();

    Criteria criteria = getSession().createCriteria(BioTransaction.class, "bt");

    criteria.createAlias("status", "bts", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("biospecimen", "bs", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.study", "st", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.linkSubjectStudy", "lss", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.sampleType", "sat", JoinType.LEFT_OUTER_JOIN);

    criteria.add(Restrictions.eq("st.id", biospecimenSummaryReportVO.getStudy().getId()));
    if (biospecimenSummaryReportVO.getSubjectUID() != null) {
        criteria.add(Restrictions.eq("lss.subjectUID", biospecimenSummaryReportVO.getSubjectUID()));
    }//from  w  ww. j  a va 2s  . c o m

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.min("bt.id"));
    projectionList.add(Projections.groupProperty("bs.id"));

    projectionList.add(Projections.property("st.name"), "studyName");
    projectionList.add(Projections.property("lss.subjectUID"), "subjectUId");
    projectionList.add(Projections.property("bs.id"), "biospecimenId");
    projectionList.add(Projections.property("bs.biospecimenUid"), "biospecimenUid");
    projectionList.add(Projections.property("bs.parentUid"), "parentId");
    projectionList.add(Projections.property("sat.name"), "sampleType");
    projectionList.add(Projections.property("bs.quantity"), "quantity");
    projectionList.add(Projections.property("bts.name"), "initialStatus");

    criteria.setProjection(projectionList);
    criteria.setResultTransformer(Transformers.aliasToBean(BiospecimenSummaryDataRow.class));
    criteria.addOrder(Order.asc("lss.subjectUID"));
    criteria.addOrder(Order.asc("bs.biospecimenUid"));
    results = criteria.list();

    return results;
}

From source file:au.org.theark.report.model.dao.ReportDao.java

License:Open Source License

public List<BiospecimenDetailsDataRow> getBiospecimenDetailsData(
        BiospecimenDetailsReportVO biospecimenDetailReportVO) {
    List<BiospecimenDetailsDataRow> results = new ArrayList<BiospecimenDetailsDataRow>();

    Criteria criteria = getSession().createCriteria(BioTransaction.class, "bt");

    criteria.createAlias("status", "bts", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("biospecimen", "bs", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.study", "st", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.bioCollection", "bc", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.linkSubjectStudy", "lss", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.sampleType", "sat", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("bs.invCell", "inc", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("inc.invBox", "inb", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("inb.invRack", "inr", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("inr.invFreezer", "inf", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("inf.invSite", "ins", JoinType.LEFT_OUTER_JOIN);

    criteria.add(Restrictions.eq("st.id", biospecimenDetailReportVO.getStudy().getId()));
    if (biospecimenDetailReportVO.getSubjectUID() != null) {
        criteria.add(Restrictions.eq("lss.subjectUID", biospecimenDetailReportVO.getSubjectUID()));
    }/*  w  w w.  j  av a2 s .c  o m*/

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.min("bt.id"));
    projectionList.add(Projections.groupProperty("bs.id"));

    projectionList.add(Projections.property("st.name"), "studyName");
    projectionList.add(Projections.property("lss.subjectUID"), "subjectUId");
    projectionList.add(Projections.property("bs.id"), "biospecimenId");
    projectionList.add(Projections.property("bc.biocollectionUid"), "biocollectionUid");
    projectionList.add(Projections.property("bs.sampleDate"), "sampleDate");
    projectionList.add(Projections.property("bs.biospecimenUid"), "biospecimenUid");
    projectionList.add(Projections.property("bs.parentUid"), "parentId");
    projectionList.add(Projections.property("sat.name"), "sampleType");
    projectionList.add(Projections.property("bs.quantity"), "quantity");
    projectionList.add(Projections.property("bts.name"), "initialStatus");

    projectionList.add(Projections.property("inb.name"), "box");
    projectionList.add(Projections.property("inr.name"), "rack");
    projectionList.add(Projections.property("inf.name"), "freezer");
    projectionList.add(Projections.property("ins.name"), "site");

    criteria.setProjection(projectionList);
    criteria.setResultTransformer(Transformers.aliasToBean(BiospecimenDetailsDataRow.class));
    criteria.addOrder(Order.asc("lss.subjectUID"));
    criteria.addOrder(Order.asc("bs.biospecimenUid"));
    results = criteria.list();

    return results;
}

From source file:au.org.theark.study.model.dao.StudyDao.java

License:Open Source License

public RelationshipVo getSubjectRelative(final String subjectUID, final Long studyId) {
    List<RelationshipVo> relatives = new ArrayList<RelationshipVo>();
    Criteria criteria = getSession().createCriteria(LinkSubjectStudy.class, "sub");
    criteria.createAlias("sub.study", "substudy", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("sub.person", "subPerson", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("subPerson.genderType", "subGender", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("subPerson.vitalStatus", "subVitStatus", JoinType.LEFT_OUTER_JOIN);

    criteria.createAlias("substudy.pedigreeConfiguration", "spc", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("spc.customField", "cf", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("cf.customFieldDisplay", "cfd", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("sub.subjectCustomFieldDataSet", "scfd", JoinType.LEFT_OUTER_JOIN,
            Restrictions.eqProperty("cfd.id", "scfd.customFieldDisplay.id"));

    criteria.add(Restrictions.eq("sub.subjectUID", subjectUID));
    criteria.add(Restrictions.eq("substudy.id", studyId));

    criteria.setFetchMode("subject", FetchMode.JOIN);
    criteria.setFetchMode("relative", FetchMode.JOIN);

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.property("sub.subjectUID"), "individualId");
    projectionList.add(Projections.property("subGender.name"), "gender");
    projectionList.add(Projections.property("subPerson.dateOfBirth"), "dob");
    projectionList.add(Projections.property("subPerson.dateOfDeath"), "dod");
    projectionList.add(Projections.property("subVitStatus.name"), "deceased");

    projectionList.add(Projections.property("scfd.textDataValue"), "affectedStatus");

    criteria.setProjection(projectionList);
    criteria.setResultTransformer(Transformers.aliasToBean(RelationshipVo.class));

    relatives = criteria.list();//from  ww w  .  j av a 2 s .c om

    return relatives.size() > 0 ? relatives.get(0) : null;
}

From source file:au.org.theark.study.model.dao.StudyDao.java

License:Open Source License

public List<RelationshipVo> getSubjectParentRelatives(final String subjectUID, final Long studyId) {
    List<RelationshipVo> relatives = new ArrayList<RelationshipVo>();
    Criteria criteria = getSession().createCriteria(LinkSubjectPedigree.class, "lsp");
    criteria.createAlias("subject", "sub", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("sub.study", "substudy", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("relative", "rel", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("rel.study", "relstudy", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("relationship", "type", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("rel.person", "relPerson", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("relPerson.genderType", "relGender", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("relPerson.vitalStatus", "relVitStatus", JoinType.LEFT_OUTER_JOIN);

    criteria.createAlias("relstudy.pedigreeConfiguration", "spc", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("spc.customField", "cf", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("cf.customFieldDisplay", "cfd", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("rel.subjectCustomFieldDataSet", "scfd", JoinType.LEFT_OUTER_JOIN,
            Restrictions.eqProperty("cfd.id", "scfd.customFieldDisplay.id"));

    criteria.add(Restrictions.eq("sub.subjectUID", subjectUID));
    criteria.add(Restrictions.eq("substudy.id", studyId));
    criteria.add(Restrictions.eq("relstudy.id", studyId));

    criteria.setFetchMode("subject", FetchMode.JOIN);
    criteria.setFetchMode("relative", FetchMode.JOIN);

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.property("lsp.id"), "id");
    projectionList.add(Projections.property("rel.subjectUID"), "individualId");
    projectionList.add(Projections.property("relGender.name"), "gender");
    projectionList.add(Projections.property("relPerson.dateOfBirth"), "dob");
    projectionList.add(Projections.property("relPerson.dateOfDeath"), "dod");
    projectionList.add(Projections.property("relPerson.firstName"), "firstName");
    projectionList.add(Projections.property("relPerson.lastName"), "lastName");
    projectionList.add(Projections.property("relVitStatus.name"), "deceased");

    projectionList.add(Projections.property("scfd.textDataValue"), "affectedStatus");

    criteria.setProjection(projectionList);
    criteria.setResultTransformer(Transformers.aliasToBean(RelationshipVo.class));

    relatives = criteria.list();//from  w w  w .  j  a  v  a2  s .c  om
    return relatives;
}

From source file:au.org.theark.study.model.dao.StudyDao.java

License:Open Source License

public List<RelationshipVo> getSubjectChildRelatives(final String subjectUID, final Long studyId) {
    List<RelationshipVo> relatives = new ArrayList<RelationshipVo>();
    Criteria criteria = getSession().createCriteria(LinkSubjectPedigree.class, "lsp");
    criteria.createAlias("subject", "sub", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("sub.study", "substudy", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("relative", "rel", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("rel.study", "relstudy", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("relationship", "type", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("sub.person", "subPerson", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("subPerson.genderType", "subGender", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("subPerson.vitalStatus", "subVitStatus", JoinType.LEFT_OUTER_JOIN);

    criteria.createAlias("substudy.pedigreeConfiguration", "spc", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("spc.customField", "cf", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("cf.customFieldDisplay", "cfd", JoinType.LEFT_OUTER_JOIN);
    criteria.createAlias("sub.subjectCustomFieldDataSet", "scfd", JoinType.LEFT_OUTER_JOIN,
            Restrictions.eqProperty("cfd.id", "scfd.customFieldDisplay.id"));

    criteria.add(Restrictions.eq("rel.subjectUID", subjectUID));
    criteria.add(Restrictions.eq("substudy.id", studyId));
    criteria.add(Restrictions.eq("relstudy.id", studyId));

    criteria.setFetchMode("subject", FetchMode.JOIN);
    criteria.setFetchMode("relative", FetchMode.JOIN);

    ProjectionList projectionList = Projections.projectionList();
    projectionList.add(Projections.property("lsp.id"), "id");
    projectionList.add(Projections.property("sub.subjectUID"), "individualId");
    projectionList.add(Projections.property("subGender.name"), "gender");
    projectionList.add(Projections.property("subPerson.dateOfBirth"), "dob");
    projectionList.add(Projections.property("subPerson.dateOfDeath"), "dod");
    projectionList.add(Projections.property("subPerson.firstName"), "firstName");
    projectionList.add(Projections.property("subPerson.lastName"), "lastName");
    projectionList.add(Projections.property("subVitStatus.name"), "deceased");

    projectionList.add(Projections.property("scfd.textDataValue"), "affectedStatus");

    criteria.setProjection(projectionList);
    criteria.setResultTransformer(Transformers.aliasToBean(RelationshipVo.class));

    relatives = criteria.list();//w ww . j a  v  a  2 s . co  m
    return relatives;
}

From source file:br.com.bean.RestControllers.faculdadeController.java

@RequestMapping(value = "busca-faculdades", method = RequestMethod.GET)
public String get() throws ParseException {
    Session sessao = HibernateUtility.getSession();
    Transaction transacao = sessao.beginTransaction();
    try {//w  w  w.j a  v a 2s. co  m
        Criteria query = sessao.createCriteria(Faculdade.class);
        Criterion ativo = Restrictions.eq("ativo", 1);
        query.setResultTransformer(DistinctRootEntityResultTransformer.INSTANCE);
        query.add(ativo);
        List<Faculdade> listaDeFaculdades = query.list();
        // Retira Referencia Circular
        for (Faculdade f : listaDeFaculdades) {
            f.setTurmas(null);
        }
        Type TipolistaDeFaculdades = new TypeToken<List<Faculdade>>() {
        }.getType();
        Gson gson = new GsonBuilder().registerTypeAdapter(Collection.class, new CollectionDeserializer())
                .create();
        String faculdades = gson.toJson(listaDeFaculdades, TipolistaDeFaculdades);
        return faculdades;
    } catch (HibernateException e) {
        transacao.rollback();
        return null;
    } catch (Exception e) {
        String erro = e.getMessage();
        return null;
    } finally {
        sessao.close();
    }
}

From source file:br.com.bean.RestControllers.turmaController.java

@RequestMapping(value = "busca-turmas", method = RequestMethod.GET)
@ResponseBody/*from  w w w .  j  av a  2  s. c  o  m*/
public String buscaTurmas(long faculdadeId) throws ParseException {
    Session sessao = HibernateUtility.getSession();
    Transaction transacao = sessao.beginTransaction();
    try {
        Criteria turmaCrit = sessao.createCriteria(Turma.class);
        turmaCrit.add(Restrictions.eq("ativo", 1));
        Criteria faculdadeCrit = turmaCrit.createCriteria("faculdade");
        faculdadeCrit.add(Restrictions.eq("faculdadeId", faculdadeId));
        turmaCrit.setResultTransformer(DistinctRootEntityResultTransformer.INSTANCE);
        List<Turma> listaDeTurmas = turmaCrit.list();
        for (Turma t : listaDeTurmas) {
            t.setFaculdade(null);
        }
        Type TipolistaDeTurmas = new TypeToken<List<Turma>>() {
        }.getType();
        Gson gson = new GsonBuilder().registerTypeAdapter(Collection.class, new CollectionDeserializer())
                .create();
        return gson.toJson(listaDeTurmas, TipolistaDeTurmas);
    } catch (HibernateException e) {
        transacao.rollback();
        return null;
    } finally {
        sessao.close();
    }
}