public static List<String> getSelectionColumns( List<String> selectionColumns, IndexSegment indexSegment) { if ((selectionColumns.size() == 1) && selectionColumns.get(0).equals("*")) { selectionColumns.clear(); for (final String columnName : indexSegment.getColumnNames()) { selectionColumns.add(columnName); } } return selectionColumns; }
public static String[] extractSelectionRelatedColumns( Selection selection, IndexSegment indexSegment) { Set<String> selectionColumns = new HashSet<String>(); selectionColumns.addAll(selection.getSelectionColumns()); if ((selectionColumns.size() == 1) && ((selectionColumns.toArray(new String[0]))[0].equals("*"))) { selectionColumns.clear(); selectionColumns.addAll(Arrays.asList(indexSegment.getColumnNames())); } if (selection.getSelectionSortSequence() != null) { for (SelectionSort selectionSort : selection.getSelectionSortSequence()) { selectionColumns.add(selectionSort.getColumn()); } } return selectionColumns.toArray(new String[0]); }