synchronized Row getNullRow() {
if (nullRow == null) {
nullRow = new Row(new Value[columns.length], 1);
for (int i = 0; i < columns.length; i++) {
nullRow.setValue(i, ValueNull.INSTANCE);
}
}
return nullRow;
}
protected Row createRow(Value[] values) {
Row newRow = table.getTemplateRow();
for (int j = 0; j < columns.length; j++) {
Column c = columns[j];
int index = c.getColumnId();
Value v = c.convert(values[j]);
newRow.setValue(index, v);
}
return newRow;
}
/**
* Validate all values in this row, convert the values if required, and update the sequence values
* if required. This call will also set the default values if required and set the computed column
* if there are any.
*
* @param session the session
* @param row the row
*/
public void validateConvertUpdateSequence(Session session, Row row) {
for (int i = 0; i < columns.length; i++) {
Value value = row.getValue(i);
Column column = columns[i];
Value v2;
if (column.getComputed()) {
// force updating the value
value = null;
v2 = column.computeValue(session, row);
}
v2 = column.validateConvertUpdateSequence(session, value);
if (v2 != value) {
row.setValue(i, v2);
}
}
}
protected Row createRow(Expression[] expr, int rowId) {
Row newRow = table.getTemplateRow();
for (int i = 0, len = columns.length; i < len; i++) {
Column c = columns[i];
int index = c.getColumnId();
Expression e = expr[i];
if (e != null) {
// e can be null (DEFAULT)
try {
Value v = c.convert(e.getValue(session));
newRow.setValue(index, v);
} catch (DbException ex) {
throw setRow(ex, rowId, getSQL(expr));
}
}
}
return newRow;
}
