final List<InputColumn<?>> dateTimeColumns = new ArrayList<InputColumn<?>>();
for (Column column : getColumns()) {
ajb.addSourceColumn(column);
InputColumn<?> inputColumn = ajb.getSourceColumnByName(column.getName());
DataTypeFamily dataTypeFamily = inputColumn.getDataTypeFamily();
switch (dataTypeFamily) {
case BOOLEAN:
booleanColumns.add(inputColumn);
break;
case NUMBER: