Examples with AggregationMethod org.knime.base.data.aggregation.AggregationMethod used on opensource projects

Example 26 with AggregationMethod

use of org.knime.base.data.aggregation.AggregationMethod in project knime-core by knime.

the class AggregationColumnPanel method getMethods4SelectedItems.

/**
 * @return a label list of all supported methods for the currently
 * selected rows
 */
protected List<Entry<String, List<AggregationMethod>>> getMethods4SelectedItems() {
    final int[] selectedColumns = getSelectedRows();
    final Set<DataType> types = new HashSet<>(selectedColumns.length);
    for (final int row : selectedColumns) {
        final ColumnAggregator aggregator = getTableModel().getRow(row);
        types.add(aggregator.getOriginalDataType());
    }
    final DataType superType = CollectionCellFactory.getElementType(types.toArray(new DataType[0]));
    final List<Entry<String, List<AggregationMethod>>> list = AggregationMethods.getCompatibleMethodGroupList(superType);
    return list;
}

Example 27 with AggregationMethod

use of org.knime.base.data.aggregation.AggregationMethod in project knime-core by knime.

the class GroupByNodeModel method compCreateColumnAggregators.

/**
 * Compatibility method used for compatibility to versions prior Knime 2.0.
 * Method to get the aggregation methods for the versions with only one
 * method for numerical and one for nominal columns.
 *
 * @param spec
 *            the {@link DataTableSpec}
 * @param excludeCols
 *            the name of all columns to be excluded
 * @param numeric
 *            the name of the numerical aggregation method
 * @param nominal
 *            the name of the nominal aggregation method
 * @return {@link Collection} of the {@link ColumnAggregator}s
 */
private static List<ColumnAggregator> compCreateColumnAggregators(final DataTableSpec spec, final List<String> excludeCols, final String numeric, final String nominal) {
    final AggregationMethod numericMethod = AggregationMethods.getMethod4Id(numeric);
    final AggregationMethod nominalMethod = AggregationMethods.getMethod4Id(nominal);
    final Set<String> groupCols = new HashSet<>(excludeCols);
    final List<ColumnAggregator> colAg = new LinkedList<>();
    for (int colIdx = 0, length = spec.getNumColumns(); colIdx < length; colIdx++) {
        final DataColumnSpec colSpec = spec.getColumnSpec(colIdx);
        if (!groupCols.contains(colSpec.getName())) {
            final AggregationMethod method = AggregationMethods.getAggregationMethod(colSpec, numericMethod, nominalMethod);
            colAg.add(new ColumnAggregator(colSpec, method, method.inclMissingCells()));
        }
    }
    return colAg;
}