StgCmtEJB.java

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 * the License. You may obtain a copy of the License at
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 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
 *
 * The Initial Developer of the Original Code is
 * Agfa Healthcare.
 * Portions created by the Initial Developer are Copyright (C) 2012
 * the Initial Developer. All Rights Reserved.
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 * See @authors listed below
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package org.dcm4chee.archive.stgcmt.scp.impl;

import java.util.Arrays;
import java.util.HashMap;
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.Sequence;
import org.dcm4che3.data.Tag;
import org.dcm4che3.data.VR;
import org.dcm4che3.net.Status;
import org.dcm4che3.util.StringUtils;
import org.dcm4chee.archive.entity.QInstance;
import org.dcm4chee.archive.entity.QLocation;
import org.dcm4chee.archive.entity.Utils;
import org.hibernate.Session;

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

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

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

    public List<Tuple> lookupMatches(Attributes actionInfo) {
        Sequence requestSeq = actionInfo.getSequence(Tag.ReferencedSOPSequence);
        int size = requestSeq.size();
        String[] sopIUIDs = new String[size];
        for (int i = 0; i < size; i++)
            sopIUIDs[i] = requestSeq.get(i).getString(Tag.ReferencedSOPInstanceUID);
        BooleanBuilder builder = new BooleanBuilder();
        builder.and(QInstance.instance.sopInstanceUID.in(sopIUIDs));
        builder.and(QLocation.location.digest.isNotNull());
        List<Tuple> list = new HibernateQuery(em.unwrap(Session.class))
            .from(QInstance.instance)
            .innerJoin(QInstance.instance.locations,QLocation.location)
            .where(builder)
            .list(
                QInstance.instance.sopClassUID,
                QInstance.instance.sopInstanceUID,
                QInstance.instance.retrieveAETs,
                QLocation.location.digest,
                QLocation.location.storagePath,
                QLocation.location.storageSystemID,
                QLocation.location.storageSystemGroupID);
        return list;
    }

    public Attributes calculateResult(List<Tuple> list, Attributes actionInfo) {
        Sequence requestSeq = actionInfo.getSequence(Tag.ReferencedSOPSequence);
        int size = requestSeq.size();
        String[] commonRetrieveAETs = null;
        HashMap<String,Tuple> map = new HashMap<String,Tuple>(list.size() * 4 / 3);
        for (Tuple tuple : list) {
            String retrieveAETs = tuple.get(2, String.class);
            if (map.isEmpty())
                commonRetrieveAETs = Utils.decodeAETs(retrieveAETs);
            else if (commonRetrieveAETs != null)
                if (!Arrays.equals(commonRetrieveAETs, StringUtils.split(retrieveAETs,'\\')))
                    commonRetrieveAETs = null;
            map.put(tuple.get(1, String.class), tuple);
        }
        Attributes eventInfo = new Attributes(4);
        if (commonRetrieveAETs != null)
            Utils.setRetrieveAET(eventInfo, commonRetrieveAETs);
        eventInfo.setString(Tag.TransactionUID, VR.UI, actionInfo.getString(Tag.TransactionUID));
        Sequence successSeq = eventInfo.newSequence(Tag.ReferencedSOPSequence, size);
        Sequence failedSeq = eventInfo.newSequence(Tag.FailedSOPSequence, size);
        for (Attributes refSOP : requestSeq) {
            Tuple tuple = map.get(refSOP.getString(Tag.ReferencedSOPInstanceUID));
            if (tuple == null)
                failedSeq.add(refSOP(refSOP, Status.NoSuchObjectInstance));
            else if (!refSOP.getString(Tag.ReferencedSOPClassUID)
                    .equals(tuple.get(0, String.class)))
                failedSeq.add(refSOP(refSOP, Status.ClassInstanceConflict));
            else
                successSeq.add(refSOP(refSOP, commonRetrieveAETs,
                        tuple.get(2, String.class)));
        }
        if (failedSeq.isEmpty())
            eventInfo.remove(Tag.FailedSOPSequence);
        return eventInfo;
    }

    private static Attributes refSOP(Attributes refSOP,
            String[] commonRetrieveAETs, String retrieveAETs) {
        Attributes attrs = new Attributes(3);
        if (commonRetrieveAETs == null)
            Utils.setRetrieveAET(attrs, retrieveAETs);
        attrs.setString(Tag.ReferencedSOPClassUID, VR.UI,
                refSOP.getString(Tag.ReferencedSOPClassUID));
        attrs.setString(Tag.ReferencedSOPInstanceUID, VR.UI,
                refSOP.getString(Tag.ReferencedSOPInstanceUID));
        return attrs ;
    }

    private static Attributes refSOP(Attributes refSOP, int failureReason) {
        Attributes attrs = new Attributes(3);
        attrs.setString(Tag.ReferencedSOPClassUID, VR.UI,
                refSOP.getString(Tag.ReferencedSOPClassUID));
        attrs.setString(Tag.ReferencedSOPInstanceUID, VR.UI,
                refSOP.getString(Tag.ReferencedSOPInstanceUID));
        attrs.setInt(Tag.FailureReason, VR.US, failureReason);
        return attrs ;
    }
}