Example usage for java.util Collections nCopies

Introduction

In this page you can find the example usage for java.util Collections nCopies.

Prototype

public static <T> List<T> nCopies(int n, T o) 

Source Link

Document

Returns an immutable list consisting of n copies of the specified object.

Usage

From source file:org.apache.flink.runtime.taskexecutor.slot.TaskSlotTableTest.java

/**
 * Tests that one can can mark allocated slots as active.
 *//*from  w ww. jav  a 2s  . c o m*/
@Test
public void testTryMarkSlotActive() throws SlotNotFoundException {
    final TaskSlotTable taskSlotTable = createTaskSlotTable(Collections.nCopies(3, ResourceProfile.UNKNOWN));

    try {
        taskSlotTable.start(new TestingSlotActionsBuilder().build());

        final JobID jobId1 = new JobID();
        final AllocationID allocationId1 = new AllocationID();
        taskSlotTable.allocateSlot(0, jobId1, allocationId1, SLOT_TIMEOUT);
        final AllocationID allocationId2 = new AllocationID();
        taskSlotTable.allocateSlot(1, jobId1, allocationId2, SLOT_TIMEOUT);
        final AllocationID allocationId3 = new AllocationID();
        final JobID jobId2 = new JobID();
        taskSlotTable.allocateSlot(2, jobId2, allocationId3, SLOT_TIMEOUT);

        taskSlotTable.markSlotActive(allocationId1);

        assertThat(taskSlotTable.isAllocated(0, jobId1, allocationId1), is(true));
        assertThat(taskSlotTable.isAllocated(1, jobId1, allocationId2), is(true));
        assertThat(taskSlotTable.isAllocated(2, jobId2, allocationId3), is(true));

        assertThat(IteratorUtils.toList(taskSlotTable.getActiveSlots(jobId1)),
                is(equalTo(Arrays.asList(allocationId1))));

        assertThat(taskSlotTable.tryMarkSlotActive(jobId1, allocationId1), is(true));
        assertThat(taskSlotTable.tryMarkSlotActive(jobId1, allocationId2), is(true));
        assertThat(taskSlotTable.tryMarkSlotActive(jobId1, allocationId3), is(false));

        assertThat(Sets.newHashSet(taskSlotTable.getActiveSlots(jobId1)),
                is(equalTo(new HashSet<>(Arrays.asList(allocationId2, allocationId1)))));
    } finally {
        taskSlotTable.stop();
    }
}

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From source file:es.udc.gii.common.eaf.algorithm.population.multiobjective.MONSGA2Individual.java

public void translateObjective(int objective, double value) {

    if (translatedObjectives.isEmpty())
        translatedObjectives = new ArrayList<Double>(Collections.nCopies(this.getObjectives().size(), 0.0));
    translatedObjectives.set(objective, this.getObjectives().get(objective).doubleValue() - value);

}

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From source file:org.commonreality.participant.impl.RequestableEfferentObjectManager.java

/**
 * /*  www. j  a v  a 2s .  c  om*/
 */
public RequestableEfferentObjectManager(IParticipant participant) {
    _participant = participant;
    _delegate = new RequestableObjectManagerDelegate(participant, 5) {

        @Override
        protected Collection<? extends IIdentifier> createTemplates(Object key) {
            return Collections.nCopies(10, new BasicSensoryIdentifier("", IIdentifier.Type.EFFERENT,
                    _participant.getIdentifier(), _participant.getIdentifier(), (IIdentifier) key));
        }

        @Override
        protected Object getKey(IIdentifier freeIdentifier) {
            if (freeIdentifier.getType() != IIdentifier.Type.EFFERENT)
                return null;
            return ((ISensoryIdentifier) freeIdentifier).getAgent();
        }

    };
}

---

From source file:org.commonreality.participant.impl.RequestableAfferentObjectManager.java

/**
 * /*  w ww.  j a  v  a 2s.  c  o  m*/
 */
public RequestableAfferentObjectManager(IParticipant participant) {
    _participant = participant;
    _delegate = new RequestableObjectManagerDelegate(participant, 5) {

        @Override
        protected Collection<? extends IIdentifier> createTemplates(Object key) {
            return Collections.nCopies(10, new BasicSensoryIdentifier("", IIdentifier.Type.AFFERENT,
                    _participant.getIdentifier(), _participant.getIdentifier(), (IIdentifier) key));
        }

        @Override
        protected Object getKey(IIdentifier freeIdentifier) {
            if (freeIdentifier.getType() != IIdentifier.Type.AFFERENT)
                return null;
            return ((ISensoryIdentifier) freeIdentifier).getAgent();
        }

    };
}

---

From source file:org.apache.nifi.toolkit.cli.impl.result.writer.DynamicTableWriter.java

@Override
public void write(final Table table, final PrintStream output) {
    if (table == null) {
        throw new IllegalArgumentException("Table cannot be null");
    }/*from  w w w . j  a v a 2  s  .co m*/

    if (output == null) {
        throw new IllegalArgumentException("Output cannot be null");
    }

    if (table.getColumns().isEmpty()) {
        throw new IllegalArgumentException("Table has no columns to write");
    }

    output.println();

    final List<TableColumn> columns = table.getColumns();
    final List<String[]> rows = table.getRows();

    final int numColumns = columns.size();
    final Integer[] columnLengths = determineColumnLengths(columns, rows);
    final List<String> columnNames = columns.stream().map(c -> c.getName()).collect(Collectors.toList());

    final Object[] columnLengthsObj = Arrays.copyOf(columnLengths, numColumns, Object[].class);
    final Object[] columnNamesObj = columnNames.toArray(new Object[numColumns]);

    final String columnsPatternFormat = String.join("", Collections.nCopies(numColumns, "%%-%ds   "));
    final String columnsPattern = String.format(columnsPatternFormat, columnLengthsObj);

    // format the header line which will include the column names
    final String header = String.format(columnsPattern, columnNamesObj);
    output.println(header);

    // a little clunky way to dynamically create a nice header line, but at least no external dependency
    final Object[] headerLineValues = new Object[numColumns];
    for (int i = 0; i < numColumns; i++) {
        int length = columnLengths[i];
        headerLineValues[i] = String.join("", Collections.nCopies(length, "-"));
    }

    final String headerLine = String.format(columnsPattern, headerLineValues);
    output.println(headerLine);

    // format the rows and print them
    for (String[] row : rows) {
        // convert the row to an Object[] for the String.format and also abbreviate any values
        final Object[] rowValues = new Object[row.length];
        for (int i = 0; i < row.length; i++) {
            final TableColumn column = columns.get(i);
            if (column.isAbbreviated()) {
                rowValues[i] = StringUtils.abbreviate(row[i], columnLengths[i]);
            } else {
                rowValues[i] = row[i];
            }
        }

        final String rowString = String.format(columnsPattern, rowValues);
        output.println(rowString);
    }

    output.println();
    output.flush();
}

---

From source file:org.commonreality.participant.impl.RequestableRealObjectManager.java

/**
 * //ww  w . j ava2 s .  c  om
 */
public RequestableRealObjectManager(IParticipant participant) {
    _participant = participant;
    _delegate = new RequestableObjectManagerDelegate(participant, 5) {

        @Override
        protected Collection<? extends IIdentifier> createTemplates(Object key) {
            return Collections.nCopies(10,
                    new BasicIdentifier("", IIdentifier.Type.OBJECT, _participant.getIdentifier()));
        }

        @Override
        protected Object getKey(IIdentifier freeIdentifier) {
            if (freeIdentifier.getType() != IIdentifier.Type.OBJECT)
                return null;
            return _participant;
        }

    };
}

---

From source file:org.um.feri.ears.problems.unconstrained.ProblemB2.java

public ProblemB2() {
    super(2, 0);//from www  .j av a2s  .  co m

    lowerLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, -50.0));
    upperLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, 50.0));

    name = "B2 function";
}

---

From source file:org.um.feri.ears.problems.unconstrained.ProblemBranin.java

public ProblemBranin() {
    super(2, 0);// w w  w  .  ja  v a 2s .  c o  m

    lowerLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, 0.0));
    upperLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, 0.0));

    lowerLimit.set(0, -5.0);
    upperLimit.set(0, 10.0);

    lowerLimit.set(1, 0.0); //diff than in paper
    upperLimit.set(1, 15.0);

    name = "Branin function";
}

---

From source file:org.um.feri.ears.problems.unconstrained.ProblemBooth.java

public ProblemBooth() {
    super(2, 0);// www .j av a 2s.c  om

    lowerLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, -50.0));
    upperLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, 50.0));

    name = "Booth function";
}

---

From source file:org.um.feri.ears.problems.unconstrained.ProblemDeJong.java

public ProblemDeJong() {
    super(2, 0);/*from   w  w  w  . j a v  a2 s.  co  m*/

    lowerLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, -2.048));
    upperLimit = new ArrayList<Double>(Collections.nCopies(numberOfDimensions, 2.048));

    name = "De Jong";
    this.minimum = false; //search maximum
}

---

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