RetrieveServiceEJB.java

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 * for the specific language governing rights and limitations under the
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 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
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package org.dcm4chee.archive.retrieve.impl;

import java.util.List;

import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.dcm4che3.data.Attributes;
import org.dcm4che3.data.IDWithIssuer;
import org.dcm4chee.archive.conf.QueryParam;
import org.dcm4chee.archive.entity.ExternalRetrieveLocation;
import org.dcm4chee.archive.entity.PatientStudySeriesAttributes;
import org.dcm4chee.archive.entity.QLocation;
import org.dcm4chee.archive.entity.QInstance;
import org.dcm4chee.archive.entity.QPatient;
import org.dcm4chee.archive.entity.QSeries;
import org.dcm4chee.archive.entity.QStudy;
import org.dcm4chee.archive.entity.Series;
import org.dcm4chee.archive.query.util.QueryBuilder;
import org.hibernate.Session;

import com.mysema.query.BooleanBuilder;
import com.mysema.query.Tuple;
import com.mysema.query.jpa.hibernate.HibernateQuery;
import com.mysema.query.types.Expression;

/**
 * @author Gunter Zeilinger <gunterze@gmail.com>
 *
 */
@Stateless
public class RetrieveServiceEJB {

    @PersistenceContext(name = "dcm4chee-arc", unitName = "dcm4chee-arc")
    private EntityManager em;

    public List<Tuple> query(Expression<?>[] select,
            IDWithIssuer[] pids, String[] studyIUIDs, String[] seriesIUIDs,
            String[] objectIUIDs, QueryParam queryParam) {

        String nullValue = queryParam.getNullValueForQueryFields();
        BooleanBuilder builder = new BooleanBuilder();
        builder.and(QueryBuilder.pids(pids, 
                queryParam.isMatchLinkedPatientIDs(), false));
        builder.and(QueryBuilder.uids(QStudy.study.studyInstanceUID,
                studyIUIDs, false, nullValue));
        builder.and(QueryBuilder.uids(QSeries.series.seriesInstanceUID,
                seriesIUIDs, false, nullValue));
        builder.and(QueryBuilder.uids(QInstance.instance.sopInstanceUID,
                objectIUIDs, false, nullValue));
        builder.and(QueryBuilder.hideRejectedInstance(queryParam));
        builder.and(QueryBuilder.hideRejectionNote(queryParam));

        List<Tuple> query = new HibernateQuery(em.unwrap(Session.class))
                .from(QInstance.instance)
                .leftJoin(QInstance.instance.locations, QLocation.location)
                .innerJoin(QInstance.instance.attributesBlob,
                        QueryBuilder.instanceAttributesBlob)
                .innerJoin(QInstance.instance.series, QSeries.series)
                .innerJoin(QSeries.series.study, QStudy.study)
                .innerJoin(QStudy.study.patient, QPatient.patient)
                .orderBy(QInstance.instance.pk.asc())
                .where(builder)
                .list(select);

        return query;
    }

    public Attributes getSeriesAttributes(Long seriesPk) {
        PatientStudySeriesAttributes result = (PatientStudySeriesAttributes) em
                .createNamedQuery(Series.PATIENT_STUDY_SERIES_ATTRIBUTES)
                .setParameter(1, seriesPk).getSingleResult();
        return result.getAttributes();
    }

    public List<ExternalRetrieveLocation> getExternalLocations(String iuid) {
        @SuppressWarnings("unchecked")
        List<ExternalRetrieveLocation> result = em.createNamedQuery(
                ExternalRetrieveLocation.FIND_EXT_LOCATIONS_BY_IUID)
                .setParameter(1,iuid).getResultList();
        return result;
    }
}