Package org.apache.metamodel.data

Examples of org.apache.metamodel.data.EmptyDataSet

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            final SelectItem[] columnSelectItems = MetaModelHelper.createSelectItems(columns);
            final DataSet selectionDataSet = MetaModelHelper.getSelection(columnSelectItems, sourceDataSet);
            return selectionDataSet;
        } else if ("an_empty_table".equals(table.getName())) {
            return new EmptyDataSet(columns);
        }
        throw new UnsupportedOperationException();
    }
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        return schema;
    }

    protected static DataSet createDataSet(SelectItem[] selectItems, List<Object[]> data) {
        if (data.isEmpty()) {
            return new EmptyDataSet(selectItems);
        }

        SimpleDataSetHeader header = new SimpleDataSetHeader(selectItems);

        List<Row> rows = new ArrayList<Row>();
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            }
            rows.add(new DefaultRow(header, rowValues));
        }

        if (rows.isEmpty()) {
            return new EmptyDataSet(items);
        }
        return new InMemoryDataSet(header, rows);
    }
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        SelectItem item2 = new SelectItem("bar", "b");
        SelectItem item3 = new SelectItem("baz", "bz");
        List<SelectItem> selectItems1 = Arrays.asList(item1, item2, item3);
        List<SelectItem> selectItems2 = Arrays.asList(item2, item1);

        DataSet ds = MetaModelHelper.getSelection(selectItems2, new EmptyDataSet(selectItems1));
        assertEquals(SubSelectionDataSet.class, ds.getClass());

        assertEquals("[bar AS b, foo AS f]", Arrays.toString(ds.getSelectItems()));
    }
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        SelectItem item2 = new SelectItem("bar", "b");
        SelectItem item3 = new SelectItem("baz", "z");
        List<SelectItem> selectItems1 = Arrays.asList(item1, item2);
        List<SelectItem> selectItems2 = Arrays.asList(item3);

        DataSet ds1 = new EmptyDataSet(selectItems1);
        DataSet ds2 = new EmptyDataSet(selectItems2);

        DataSet joinedDs = MetaModelHelper.getLeftJoin(ds1, ds2, new FilterItem[] { new FilterItem(item2,
                OperatorType.EQUALS_TO, item3) });

        assertEquals(SubSelectionDataSet.class, joinedDs.getClass());
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                    if (!resultSet.next()) {
                        // the result set was not as long as the first row
                        if (resultSet != null) {
                            resultSet.close();
                        }
                        return new EmptyDataSet(query.getSelectClause().getItems());
                    }
                }
            }

            if (lease == null) {
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    public DataSet executeQuery(InputStream inputStream, Table table, Column[] columns, int maxRows) {
        final Workbook wb = ExcelUtils.readWorkbook(inputStream);
        final Sheet sheet = wb.getSheet(table.getName());

        if (sheet == null || sheet.getPhysicalNumberOfRows() == 0) {
            return new EmptyDataSet(columns);
        }

        DataSet dataSet = ExcelUtils.getDataSet(wb, sheet, table, _configuration);

        if (maxRows > 0) {
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            }
            selectItemOffset += fromSelectItems.length;
        }

        if (data.isEmpty()) {
            return new EmptyDataSet(selectItems);
        }

        final DataSetHeader header = new CachingDataSetHeader(selectItems);
        final List<Row> rows = new ArrayList<Row>(data.size());
        for (Object[] objects : data) {
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                }
                resultData.add(new DefaultRow(resultHeader, resultRow, null));
            }

            if (resultData.isEmpty()) {
                result = new EmptyDataSet(selectItems);
            } else {
                result = new InMemoryDataSet(resultHeader, resultData);
            }
        }
        result = getSelection(selectItems, result);
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                sortIndexes[i] = indexOf;
            }

            final List<Row> data = readDataSetFull(dataSet);
            if (data.isEmpty()) {
                return new EmptyDataSet(dataSet.getSelectItems());
            }

            final Comparator<Object> valueComparator = ObjectComparator.getComparator();

            // create a comparator for doing the actual sorting/ordering
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Related Classes of org.apache.metamodel.data.EmptyDataSet

  • org.apache.metamodel.csv.CsvDataContext
  • org.apache.metamodel.excel.DefaultSpreadsheetReaderDelegate
  • org.apache.metamodel.excel.ExcelUtils
  • org.apache.metamodel.jdbc.JdbcDataContext
  • org.apache.metamodel.MetaModelHelper
  • org.apache.metamodel.MetaModelHelperTest
  • org.apache.metamodel.MetaModelTestCase
  • org.apache.metamodel.MockDataContext
  • org.apache.metamodel.MockUpdateableDataContext
  • org.apache.metamodel.QueryPostprocessDataContext
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