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

Introduction

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

Prototype

lock

Source Link

Usage

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

@Override
public FastIDSet getUserCluster(int n) throws NotReadyException {
    Generation generation = getCurrentGeneration();
    List<IDCluster> clusters = generation.getUserClusters();
    if (clusters == null || clusters.isEmpty()) {
        throw new UnsupportedOperationException();
    }/*w w  w .ja v  a 2 s  . c  o  m*/
    Lock lock = generation.getUserClustersLock().readLock();
    FastIDSet members;
    lock.lock();
    try {
        members = clusters.get(n).getMembers();
    } finally {
        lock.unlock();
    }
    synchronized (members) {
        return members.clone();
    }
}

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

@Override
public FastIDSet getItemCluster(int n) throws NotReadyException {
    Generation generation = getCurrentGeneration();
    List<IDCluster> clusters = generation.getItemClusters();
    if (clusters == null || clusters.isEmpty()) {
        throw new UnsupportedOperationException();
    }//  www . j av  a 2  s .co  m
    Lock lock = generation.getItemClustersLock().readLock();
    FastIDSet members;
    lock.lock();
    try {
        members = clusters.get(n).getMembers();
    } finally {
        lock.unlock();
    }
    synchronized (members) {
        return members.clone();
    }
}

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

public ExamInfo getInfo(long examId) {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from  w  w w.  java  2 s  .c o  m*/
        Exam exam = getExam(examId);
        return (exam == null ? null : new ExamInfo(exam));
    } finally {
        lock.unlock();
    }
}

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

public ExamAssignment getAssignment(long examId) {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from  w w w .  j  a va 2 s.  com*/
        Exam exam = getExam(examId);
        ExamPlacement placement = (exam == null ? null : currentSolution().getAssignment().getValue(exam));
        return placement == null ? null : new ExamAssignment(placement, currentSolution().getAssignment());
    } finally {
        lock.unlock();
    }
}

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

public ExamAssignmentInfo getAssignmentInfo(long examId) {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {//from   ww  w.  j  ava2 s . c  o m
        Exam exam = getExam(examId);
        ExamPlacement placement = (exam == null ? null : currentSolution().getAssignment().getValue(exam));
        return placement == null ? null : new ExamAssignmentInfo(placement, currentSolution().getAssignment());
    } finally {
        lock.unlock();
    }
}

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

public Map<String, String> currentSolutionInfo() {
    if (isPassivated())
        return iCurrentSolutionInfoBeforePassivation;
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from  w  ww.  j  a v  a2  s . c o m*/
        return super.currentSolution().getInfo();
    } finally {
        lock.unlock();
    }
}

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

public Map<String, String> bestSolutionInfo() {
    if (isPassivated())
        return iBestSolutionInfoBeforePassivation;
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {/*from   w  ww. j ava2s  . c  om*/
        return super.currentSolution().getBestInfo();
    } finally {
        lock.unlock();
    }
}

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

public Exam getExam(long examId) {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {//from w w  w .  j  ava2  s.co  m
        for (Exam exam : currentSolution().getModel().variables()) {
            if (exam.getId() == examId)
                return exam;
        }
        return null;
    } finally {
        lock.unlock();
    }
}

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

public void clear() {
    Lock lock = currentSolution().getLock().writeLock();
    lock.lock();
    try {/*  w  w  w  .ja v  a2s  .c  o  m*/
        for (Exam exam : currentSolution().getModel().variables()) {
            currentSolution().getAssignment().unassign(0, exam);
        }
        currentSolution().clearBest();
    } finally {
        lock.unlock();
    }
}

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

public Collection<ExamAssignmentInfo> getAssignedExams() {
    Lock lock = currentSolution().getLock().readLock();
    lock.lock();
    try {// w w  w  . j a  v a 2s  . c  o  m
        Vector<ExamAssignmentInfo> ret = new Vector<ExamAssignmentInfo>();
        for (Exam exam : currentSolution().getModel().variables()) {
            ExamPlacement placement = currentSolution().getAssignment().getValue(exam);
            if (placement != null)
                ret.add(new ExamAssignmentInfo(placement, currentSolution().getAssignment()));
        }
        return ret;
    } finally {
        lock.unlock();
    }
}