IDPatientSelector.java

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
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 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 *
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * 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) 2011-2014
 * the Initial Developer. All Rights Reserved.
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 * See @authors listed below
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package org.dcm4chee.archive.patient;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.dcm4che3.data.Attributes;
import org.dcm4che3.data.IDWithIssuer;
import org.dcm4chee.archive.entity.Issuer;
import org.dcm4chee.archive.entity.Patient;
import org.dcm4chee.archive.entity.PatientID;

/**
 * @author Gunter Zeilinger <gunterze@gmail.com>
 *
 */
public class IDPatientSelector implements PatientSelector {

    @Override
    public Patient select(List<Patient> candidates,
            Attributes attrs, Collection<IDWithIssuer> pids)
            throws NonUniquePatientException {

        if (candidates.isEmpty())
            return null;

        if (pids.isEmpty())
            throw new NonUniquePatientException("No Patient ID");

        if (candidates.size() == 1)
            return candidates.get(0);

        if (containsIssuer(pids)) {
            ArrayList<Patient> matchingIssuer =
                    new ArrayList<Patient>(candidates.size());
            for (Patient patient : candidates)
                if (containsIDWithMatchingIssuer(patient.getPatientIDs(), pids))
                    matchingIssuer.add(patient);
    
            if (matchingIssuer.size() == 1)
                return matchingIssuer.get(0);
        }
 
        throw new NonUniquePatientException(
                candidates.size() + " matching patients");
    }

    static boolean containsIssuer(Collection<IDWithIssuer> pids) {

        for (IDWithIssuer pid : pids)
            if (pid.getIssuer() != null)
                return true;

        return false;
    }

    static boolean containsIDWithMatchingIssuer(
            Collection<PatientID> patientIDs, Collection<IDWithIssuer> pids) {
        for (PatientID patientID : patientIDs) {
            String id = patientID.getID();
            Issuer issuer = patientID.getIssuer();
            if (issuer == null)
                continue;

            for (IDWithIssuer pid : pids) {
                if (id.equals(pid.getID())) {
                    org.dcm4che3.data.Issuer issuer2 = pid.getIssuer();
                    if (issuer2 != null && issuer2.matches(issuer))
                        return true;
                }
            }
        }
        return false;
    }

}