Examples of org.voltdb.VoltTableRow.wasNull()

org.voltdb.VoltTableRow.wasNull()
Returns whether last retrieved value was null. Some special values that are NOT Java's NULL represents null the SQL notion of null in our system. @return true if the value was null, false otherwise.

                    "ALLOW_NULLS", pkey.get()).getResults();
            final VoltTableRow row = result[0].fetchRow(0);
            for (int i = 0; i < COLS; ++i) {
                final Object obj = row.get(i + 1, m_types[i]);
                if (i == k) {
                    assertTrue(row.wasNull());
                } else {
                    assertTrue(comparisonHelper(obj, params[i + 2], m_types[i]));
                }
            }
        }

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            final VoltTable[] result = client.callProcedure("Select",
                    "NO_NULLS", pkey.get()).getResults();
            final VoltTableRow row = result[0].fetchRow(0);
            for (int i = 0; i < COLS; ++i) {
                final Object obj = row.get(i + 1, m_types[i]);
                assertTrue(!row.wasNull());
                assertTrue(comparisonHelper(obj, params[i + 2], m_types[i]));
            }
        }
    }

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            final VoltTable[] result = client.callProcedure("Select",
                    "NO_NULLS", pkey.get()).getResults();
            final VoltTableRow row = result[0].fetchRow(0);
            for (int i = 0; i < COLS; ++i) {
                final Object obj = row.get(i + 1, m_types[i]);
                assertTrue(!row.wasNull());
                assertTrue(comparisonHelper(obj, params[i + 2], m_types[i]));
            }
        }
    }

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                    assertEquals(0, results[0].asScalarLong());
                } else {
                    final VoltTableRow row = results[0].fetchRow(0);
                    row.get(0, results[0].getColumnType(0));
                    if (!isHSQL()) {
                        assertTrue(row.wasNull());
                    }
                }
            }
            // Do avg separately since the column is a float and makes
            // asScalarLong() unhappy

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            assert otherresults[resultoffset + 0].getRowCount() == 1;
            assert otherresults[resultoffset + 1].getRowCount() == 1;
            final long c_id = (otherresults[resultoffset + 0].asScalarLong());
            final VoltTableRow row = otherresults[resultoffset + 1].fetchRow(0);
            final double ol_total = row.getDouble(0);
            final boolean ol_total_wasnull = row.wasNull();


            // If there are no order lines, SUM returns null. There should always be order lines.
            if (ol_total_wasnull) {
                throw new VoltAbortException(
                        "ol_total is NULL: there are no order lines. This should not happen");

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