Example usage for java.util.concurrent.locks Lock lock

List of usage examples for java.util.concurrent.locks Lock lock

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Introduction

In this page you can find the example usage for java.util.concurrent.locks Lock lock.

Prototype

lock

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Usage

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public Collection<ExamInfo> getUnassignedExams() {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from   w  w  w  .  j  av  a2s .  c  o  m*/
        Vector<ExamInfo> ret = new Vector<ExamInfo>();
        for (Exam exam : currentSolution().getModel().variables()) {
            ExamPlacement placement = currentSolution().getAssignment().getValue(exam);
            if (placement == null)
                ret.add(new ExamInfo(exam));
        }
        return ret;
    } finally {
        lock.unlock();
    }
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public String unassign(ExamInfo examInfo) {
    Lock lock = currentSolution().getLock().writeLock();
    lock.lock();
    try {//from w ww.j  a v a  2 s  .com
        Exam exam = getExam(examInfo.getExamId());
        if (exam == null)
            return "Examination " + examInfo.getExamName() + " not found.";
        ExamPlacement placement = currentSolution().getAssignment().getValue(exam);
        if (placement == null)
            return "Examination " + examInfo.getExamName() + " is not assigned.";
        Progress.getInstance(currentSolution().getModel())
                .info(exam.getName() + ": " + placement.getName() + " &rarr; not assigned");
        currentSolution().getAssignment().unassign(0, exam);
        return null;
    } finally {
        lock.unlock();
    }
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public Map<String, String> statusSolutionInfo() {
    if (isPassivated())
        return (iBestSolutionInfoBeforePassivation == null ? iCurrentSolutionInfoBeforePassivation
                : iBestSolutionInfoBeforePassivation);
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {//  w  w  w . ja  v a  2 s  .com
        Map<String, String> info = super.currentSolution().getBestInfo();
        try {
            Solution<Exam, ExamPlacement> solution = getWorkingSolution();
            if (info == null || getSolutionComparator().isBetterThanBestSolution(solution))
                info = solution.getModel().getInfo(solution.getAssignment());
        } catch (ConcurrentModificationException e) {
        }
        return info;
    } finally {
        lock.unlock();
    }
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public ExamConflictStatisticsInfo getCbsInfo() {
    ConflictStatistics cbs = null;/*from   w w w .j av  a2 s .  c o m*/
    for (Extension ext : getExtensions()) {
        if (ext instanceof ConflictStatistics) {
            cbs = (ConflictStatistics) ext;
            break;
        }
    }
    if (cbs == null || cbs.getNoGoods().isEmpty()) {
        if (iCbsInfo != null)
            return iCbsInfo;
        return null;
    }
    ExamConflictStatisticsInfo info = new ExamConflictStatisticsInfo();
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {
        info.load(cbs);
    } finally {
        lock.unlock();
    }
    return info;
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public ExamConflictStatisticsInfo getCbsInfo(Long examId) {
    ConflictStatistics cbs = null;//from   w  w  w .jav a  2 s . co  m
    for (Extension ext : getExtensions()) {
        if (ext instanceof ConflictStatistics) {
            cbs = (ConflictStatistics) ext;
            break;
        }
    }
    if (cbs == null || cbs.getNoGoods().isEmpty()) {
        if (iCbsInfo != null)
            return iCbsInfo;
        return null;
    }
    ExamConflictStatisticsInfo info = new ExamConflictStatisticsInfo();
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {
        info.load(cbs, examId);
    } finally {
        lock.unlock();
    }
    return info;
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public Collection<ExamAssignmentInfo> getAssignedExamsOfRoom(Long roomId) {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from  w  ww.  j  av a2 s .c om*/
        ExamRoom room = null;
        for (ExamRoom r : ((ExamModel) currentSolution().getModel()).getRooms()) {
            if (r.getId() == roomId) {
                room = r;
                break;
            }
        }
        if (room == null)
            return null;
        Vector<ExamAssignmentInfo> ret = new Vector<ExamAssignmentInfo>();
        for (ExamPeriod period : ((ExamModel) currentSolution().getModel()).getPeriods()) {
            for (ExamPlacement placement : room.getPlacements(currentSolution().getAssignment(), period)) {
                ret.add(new ExamAssignmentInfo(placement, currentSolution().getAssignment()));
            }
        }
        return ret;
    } finally {
        lock.unlock();
    }
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public TreeSet<ExamAssignment> getExamsOfRoom(long locationId) {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {//  ww w. j  av  a2 s.c  o m
        ExamModel model = (ExamModel) currentSolution().getModel();
        ExamRoom room = null;
        for (ExamRoom r : model.getRooms()) {
            if (r.getId() == locationId) {
                room = r;
                break;
            }
        }
        if (room == null)
            return null;
        TreeSet<ExamAssignment> ret = new TreeSet();
        for (ExamPeriod period : model.getPeriods()) {
            for (ExamPlacement placement : room.getPlacements(currentSolution().getAssignment(), period))
                ret.add(new ExamAssignment(placement, currentSolution().getAssignment()));
        }
        return ret;
    } finally {
        lock.unlock();
    }
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public Collection<ExamAssignmentInfo> getAssignedExams(Long subjectAreaId) {
    if (subjectAreaId == null || subjectAreaId < 0)
        return getAssignedExams();
    String sa = new SubjectAreaDAO().get(subjectAreaId).getSubjectAreaAbbreviation() + " ";
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {//  www.  ja va2 s .c o m
        Vector<ExamAssignmentInfo> ret = new Vector<ExamAssignmentInfo>();
        for (Exam exam : currentSolution().getModel().variables()) {
            boolean hasSubjectArea = false;
            for (Iterator<ExamOwner> f = exam.getOwners().iterator(); !hasSubjectArea && f.hasNext();) {
                ExamOwner ecs = (ExamOwner) f.next();
                hasSubjectArea = ecs.getName().startsWith(sa);
            }
            if (hasSubjectArea) {
                ExamPlacement placement = currentSolution().getAssignment().getValue(exam);
                if (placement != null)
                    ret.add(new ExamAssignmentInfo(placement, currentSolution().getAssignment()));
            }
        }
        return ret;
    } finally {
        lock.unlock();
    }
}

From source file:org.unitime.timetable.solver.exam.ExamSolver.java

public Collection<ExamInfo> getUnassignedExams(Long subjectAreaId) {
    if (subjectAreaId == null || subjectAreaId < 0)
        return getUnassignedExams();
    String sa = new SubjectAreaDAO().get(subjectAreaId).getSubjectAreaAbbreviation() + " ";
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from ww w.j a  va  2s  .  com*/
        Vector<ExamInfo> ret = new Vector<ExamInfo>();
        for (Exam exam : currentSolution().getModel().variables()) {
            boolean hasSubjectArea = false;
            for (Iterator<ExamOwner> f = exam.getOwners().iterator(); !hasSubjectArea && f.hasNext();) {
                ExamOwner ecs = f.next();
                hasSubjectArea = ecs.getName().startsWith(sa);
            }
            if (hasSubjectArea) {
                ExamPlacement placement = currentSolution().getAssignment().getValue(exam);
                if (placement == null)
                    ret.add(new ExamInfo(exam));
            }
        }
        return ret;
    } finally {
        lock.unlock();
    }
}

From source file:net.myrrix.online.ServerRecommender.java

public void setPreference(long userID, long itemID, float value, boolean bulk) {

    // Record datum
    try {/*w w w .  j  a  v a  2  s . co  m*/
        generationManager.append(userID, itemID, value, bulk);
    } catch (IOException ioe) {
        log.warn("Could not append datum; continuing", ioe);
    }

    Generation generation;
    try {
        generation = getCurrentGeneration();
    } catch (NotReadyException nre) {
        // Corner case -- no model ready so all we can do is record (above). Don't fail the request.
        return;
    }

    float[] userFeatures = getFeatures(userID, generation.getX(), generation.getXLock());

    boolean newItem;
    Lock yReadLock = generation.getYLock().readLock();
    yReadLock.lock();
    try {
        newItem = generation.getY().get(itemID) == null;
    } finally {
        yReadLock.unlock();
    }
    if (newItem) {
        generation.getCandidateFilter().addItem(itemID);
    }

    float[] itemFeatures = getFeatures(itemID, generation.getY(), generation.getYLock());

    updateFeatures(userFeatures, itemFeatures, value, generation);

    FastByIDMap<FastIDSet> knownItemIDs = generation.getKnownItemIDs();
    if (knownItemIDs != null) {
        FastIDSet userKnownItemIDs;
        ReadWriteLock knownItemLock = generation.getKnownItemLock();
        Lock knownItemReadLock = knownItemLock.readLock();
        knownItemReadLock.lock();
        try {
            userKnownItemIDs = knownItemIDs.get(userID);
            if (userKnownItemIDs == null) {
                userKnownItemIDs = new FastIDSet();
                Lock knownItemWriteLock = knownItemLock.writeLock();
                knownItemReadLock.unlock();
                knownItemWriteLock.lock();
                try {
                    knownItemIDs.put(userID, userKnownItemIDs);
                } finally {
                    knownItemReadLock.lock();
                    knownItemWriteLock.unlock();
                }
            }
        } finally {
            knownItemReadLock.unlock();
        }

        synchronized (userKnownItemIDs) {
            userKnownItemIDs.add(itemID);
        }
    }

    updateClusters(userID, userFeatures, generation.getUserClusters(),
            generation.getUserClustersLock().readLock());
    updateClusters(itemID, itemFeatures, generation.getItemClusters(),
            generation.getItemClustersLock().readLock());
}