Examples of org.gdbms.engine.data.DataSource.start()

org.gdbms.engine.data.DataSource.start()
Opens the DataSource to access the data it contains. If the data is accessed without a previous opening a ClosedDataSourceException is thrown. If this method is invoked twice then only the second call to stop will close the DataSource.
If the DataSource was obtained with an AUTOMATIC_OPENING mode, there's no need to open the DataSource. Indeed start calls are ignored. It's possible to close the DataSource by a single call to the close method @throws DriverException if the operation fails

   *
   * @throws Exception DOCUMENT ME!
   */
  public void testPKAccess() throws Exception {
    DataSource d = ds.getDataSource("hsqldbpersona");
    d.start();


    String[] pks = d.getDataSourceMetadata().getPrimaryKey();
    assertTrue(pks.length == 1);
    assertTrue(pks[0].toUpperCase().equals("ID"));
    d.stop();

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public class SelectionTest extends DataSourceTestCase {


    public void testGetSelection() throws Exception {
        DataSource d = ds.getDataSource("persona");
        
        d.start();
        d.setSelectedRows(new int[] {0, 2});
        int[] selection = d.getSelectedRows();
        assertTrue(selection.length == 2);
        assertTrue((selection[0] == 0) && (selection[1] == 2));
        d.stop();

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    d.insertEmptyRow();
        d.setFieldValue(3, 0, ValueFactory.createValue(5));
    d.commitTrans();


    d = ds.getDataSource(dsName);
    d.start();
    assertTrue(((BooleanValue)d.getFieldValue(0, 0).equals(ValueFactory.createValue(0))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(0, 1).equals(ValueFactory.createValue("fernando"))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(0, 2).equals(ValueFactory.createValue("gonzalez"))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(1, 0).equals(ValueFactory.createValue(1))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(1, 1).equals(ValueFactory.createValue("huracan"))).getValue());

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    d.beginTrans();
    d.setFieldValue(0, 1, value);
    d.commitTrans();


    d.start();
    assertTrue(((BooleanValue) d.getFieldValue(0, 1).equals(value)).getValue());
    d.stop();
    }
  
  public void testSQLInjectionFakeTransaction() throws Exception {

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    d.beginTrans();
    d.insertFilledRow(new Value[] {v1, v2, v3, v4, v5, v6});
    d.commitTrans();


        d.start();
    assertTrue(((BooleanValue) d.getFieldValue(3, 0).equals(v1)).getValue());
    assertTrue(((BooleanValue) d.getFieldValue(3, 1).equals(v2)).getValue());
    assertTrue(((BooleanValue) d.getFieldValue(3, 2).equals(v3)).getValue());
    assertTrue(((BooleanValue) d.getFieldValue(3, 3).equals(v4)).getValue());
    assertTrue(((BooleanValue) d.getFieldValue(3, 4).equals(v5)).getValue());

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        d.beginTrans();
        d.insertFilledRow(new Value[] {v1, v2, v3, v4, v5, v6});
        d.setFieldValue(0, 1, ValueFactory.createNullValue());
        d.commitTrans();


        d.start();
        assertTrue(((BooleanValue) d.getFieldValue(3, 0).equals(v1)).getValue());
        assertTrue(((BooleanValue) ValueFactory.createValue(d.getFieldValue(3, 1) instanceof NullValue)).getValue());
        assertTrue(((BooleanValue) d.getFieldValue(3, 2).equals(v3)).getValue());
        assertTrue(((BooleanValue) d.getFieldValue(3, 3).equals(v4)).getValue());
        assertTrue(((BooleanValue) d.getFieldValue(3, 4).equals(v5)).getValue());

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                v2,
                ValueFactory.createValue(0L)
        });
        d.commitTrans();


        d.start();
        assertTrue(d.getRowCount() == 1);
        assertTrue(d.getDataSourceMetadata().getFieldCount() == 2);
        assertTrue(((BooleanValue)d.getFieldValue(0, 0).equals(v1)).getValue());
        assertTrue(((BooleanValue)d.getFieldValue(0, 1).equals(v2)).getValue());
        d.stop();

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    d.setFieldValue(d.getRowCount() - 1, 0, geom);
    d.setFieldValue(d.getRowCount() - 1, 1, nv2);
    d.commitTrans();


    d = ds.getDataSource(dsName);
    d.start();
    for (int i = 0; i < previous.length; i++) {
      for (int j = 0; j < previous[i].length; j++) {
        assertTrue(!((BooleanValue) previous[i][j].notEquals(d
            .getFieldValue(i, j))).getValue());
      }

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    d.setFieldValue(3, 0, ValueFactory.createValue(3));


    d.commitTrans();


    d = ds.getDataSource(dsName);
    d.start();
    assertTrue(((BooleanValue)d.getFieldValue(0, 0).equals(ValueFactory.createValue(0))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(0, 1).equals(ValueFactory.createValue("edicion1"))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(0, 2).equals(ValueFactory.createValue("gonzalez"))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(1, 0).equals(ValueFactory.createValue(1))).getValue());
    assertTrue(((BooleanValue)d.getFieldValue(1, 1).equals(ValueFactory.createValue("edicion2"))).getValue());

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      d.setFieldValue(d.getRowCount() - 1, 1, nv2);
    }
    d.commitTrans();


    d = ds.getDataSource("big");
    d.start();
    assertTrue(d.getRowCount() == n);
    for (int i = 0; i < n; i++) {
      Geometry readGeom = (Geometry) d.getFieldValue(i, 0);
      assertTrue(readGeom.getGeometryType() == FShape.LINE);
      assertTrue(((BooleanValue) readGeom.equals(geom)).getValue());

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