Examples with DataRow org.knime.core.data.DataRow used on opensource projects

Example 76 with DataRow

use of org.knime.core.data.DataRow in project knime-core by knime.

the class RearrangeColumnsTable method calcNewColsSynchronously.

/**
 * Processes input sequentially in the caller thread.
 */
private static void calcNewColsSynchronously(final BufferedDataTable table, final ExecutionMonitor subProgress, final NewColumnsProducerMapping newColsProducerMapping, final DataContainer container) throws CanceledExecutionException {
    long finalRowCount = table.size();
    Set<CellFactory> newColsFactories = newColsProducerMapping.getUniqueCellFactoryMap().keySet();
    final int factoryCount = newColsFactories.size();
    int r = 0;
    CellFactory facForProgress = factoryCount > 0 ? newColsFactories.iterator().next() : null;
    for (RowIterator it = table.iterator(); it.hasNext(); r++) {
        DataRow row = it.next();
        DataRow append = calcNewCellsForRow(row, newColsProducerMapping);
        container.addRowToTable(append);
        if (facForProgress == null) {
            // no factory added means at least one columns gets type converted.
            assert !newColsProducerMapping.getConverterToIndexMap().isEmpty();
        } else {
            facForProgress.setProgress(r + 1, finalRowCount, row.getKey(), subProgress);
        }
        subProgress.checkCanceled();
    }
}

Example 77 with DataRow

use of org.knime.core.data.DataRow in project knime-core by knime.

the class AbstractColumnTableSorter method sort.

/**
 * @param dataTable the table to sort
 * @param exec the execution context
 * @param resultListener the result listener
 * @throws CanceledExecutionException if the user cancels the execution
 */
void sort(final DataTable dataTable, final ExecutionMonitor exec, final SortingConsumer resultListener) throws CanceledExecutionException {
    if (m_sortDescriptions.length <= 0) {
        for (DataRow r : dataTable) {
            resultListener.consume(new DefaultRow(r.getKey(), new DataCell[0]));
        }
    } else {
        clearBuffer();
        sortOnDisk(dataTable, exec, resultListener);
    }
}

Example 78 with DataRow

use of org.knime.core.data.DataRow in project knime-core by knime.

the class AbstractColumnTableSorter method fillBuffer.

/**
 * @param m_buffer
 * @param iterator
 * @param checkMemory
 * @param exec
 * @throws CanceledExecutionException
 */
private long fillBuffer(final RowIterator iterator, final ExecutionMonitor readExec) throws CanceledExecutionException {
    long count = 0;
    while (iterator.hasNext()) {
        count += 1;
        readExec.checkCanceled();
        DataRow r = iterator.next();
        for (Entry<SortingDescription, List<DataRow>> descr : m_buffer.entrySet()) {
            descr.getValue().add(descr.getKey().createSubRow(r));
        }
        // read at least two rows, otherwise we won't make any progress
        if ((count >= 2) && m_memActionIndicator.lowMemoryActionRequired()) {
            break;
        }
    }
    return count;
}

Example 79 with DataRow

use of org.knime.core.data.DataRow in project knime-core by knime.

the class AbstractColumnTableSorter method toSortDescriptions.

private static SortingDescription[] toSortDescriptions(final DataTableSpec dataTableSpec, final String[] toSort) throws InvalidSettingsException {
    checkArgument(!ArrayUtils.contains(toSort, null), "Null values are not permitted.");
    SortingDescription[] toReturn = new SortingDescription[toSort.length];
    int index = 0;
    for (String so : toSort) {
        DataColumnSpec columnSpec = checkSettingNotNull(dataTableSpec.getColumnSpec(so), "Column: '%s' does not exist in input table.", so);
        final DataValueComparator comparator = columnSpec.getType().getComparator();
        toReturn[index++] = new SortingDescription(so) {

            @Override
            public int compare(final DataRow o1, final DataRow o2) {
                return comparator.compare(o1.getCell(0), o2.getCell(0));
            }
        };
    }
    return toReturn;
}

Example 80 with DataRow

use of org.knime.core.data.DataRow in project knime-core by knime.

the class TableContentModel method getValueAt.

// getRowCount()
/**
 * Get the DataCell at a specific location. If the requested row is in the
 * cache, it will be returned. Otherwise the ring buffer is updated
 * (iterator pushed forward or reset) until the row is in the cache.
 *
 * @param row the row index
 * @param column the column index
 * @return the <code>DataCell</code> in the underlying
 *         <code>DataTable</code> at position [<code>row, column</code>]
 * @throws IndexOutOfBoundsException if either argument violates its range
 */
@Override
public DataCell getValueAt(final int row, final int column) {
    boundColumn(column);
    DataRow result = getRow(row);
    return result.getCell(column);
}