Examples with ListCell org.knime.core.data.collection.ListCell used on opensource projects

Example 6 with ListCell

use of org.knime.core.data.collection.ListCell in project knime-core by knime.

the class DataCellToJavaConversionTest method testNestedCollectionTypes.

/**
 * Test ListCell(ListCell(IntCell)) -> Integer[][] conversion.
 *
 * @throws Exception When something went wrong
 */
@Test
public void testNestedCollectionTypes() throws Exception {
    ArrayList<DataCell> coll = new ArrayList<>();
    for (int i = 0; i < 5; ++i) {
        coll.add(new IntCell(i * i));
    }
    // collection cells can always contain missing cells.
    coll.add(new MissingCell("42"));
    final ListCell listCell = CollectionCellFactory.createListCell(Arrays.asList(CollectionCellFactory.createListCell(coll)));
    final Optional<? extends DataCellToJavaConverterFactory<? extends DataValue, Integer[][]>> factory = DataCellToJavaConverterRegistry.getInstance().getConverterFactories(listCell.getType(), Integer[][].class).stream().findFirst();
    assertTrue(factory.isPresent());
    final DataCellToJavaConverter<DataCell, Integer[][]> converter = (DataCellToJavaConverter<DataCell, Integer[][]>) factory.get().create();
    assertNotNull(converter);
    final Integer[][] array = converter.convert(listCell);
    for (int i = 0; i < 5; ++i) {
        assertEquals(new Integer(i * i), array[0][i]);
    }
    assertNull(array[0][5]);
}