Examples with LowerCaseSorter com.yahoo.search.query.Sorting.LowerCaseSorter used on opensource projects

Example 1 with LowerCaseSorter

use of com.yahoo.search.query.Sorting.LowerCaseSorter in project vespa by vespa-engine.

the class YqlParser method fetchSorting.

@NonNull
private OperatorNode<?> fetchSorting(OperatorNode<?> ast) {
    if (ast.getOperator() != SequenceOperator.SORT)
        return ast;
    List<FieldOrder> sortingInit = new ArrayList<>();
    List<OperatorNode<?>> sortArguments = ast.getArgument(1);
    for (OperatorNode<?> op : sortArguments) {
        OperatorNode<ExpressionOperator> fieldNode = op.<OperatorNode<ExpressionOperator>>getArgument(0);
        String field = fetchFieldRead(fieldNode);
        String locale = getAnnotation(fieldNode, SORTING_LOCALE, String.class, null, "locale used by sorting function");
        String function = getAnnotation(fieldNode, SORTING_FUNCTION, String.class, null, "sorting function for the specified attribute");
        String strength = getAnnotation(fieldNode, SORTING_STRENGTH, String.class, null, "strength for sorting function");
        AttributeSorter sorter;
        if (function == null) {
            sorter = new AttributeSorter(field);
        } else if (Sorting.LOWERCASE.equals(function)) {
            sorter = new LowerCaseSorter(field);
        } else if (Sorting.RAW.equals(function)) {
            sorter = new RawSorter(field);
        } else if (Sorting.UCA.equals(function)) {
            if (locale != null) {
                UcaSorter.Strength ucaStrength = UcaSorter.Strength.UNDEFINED;
                if (strength != null) {
                    if (Sorting.STRENGTH_PRIMARY.equalsIgnoreCase(strength)) {
                        ucaStrength = UcaSorter.Strength.PRIMARY;
                    } else if (Sorting.STRENGTH_SECONDARY.equalsIgnoreCase(strength)) {
                        ucaStrength = UcaSorter.Strength.SECONDARY;
                    } else if (Sorting.STRENGTH_TERTIARY.equalsIgnoreCase(strength)) {
                        ucaStrength = UcaSorter.Strength.TERTIARY;
                    } else if (Sorting.STRENGTH_QUATERNARY.equalsIgnoreCase(strength)) {
                        ucaStrength = UcaSorter.Strength.QUATERNARY;
                    } else if (Sorting.STRENGTH_IDENTICAL.equalsIgnoreCase(strength)) {
                        ucaStrength = UcaSorter.Strength.IDENTICAL;
                    } else {
                        throw newUnexpectedArgumentException(function, Sorting.STRENGTH_PRIMARY, Sorting.STRENGTH_SECONDARY, Sorting.STRENGTH_TERTIARY, Sorting.STRENGTH_QUATERNARY, Sorting.STRENGTH_IDENTICAL);
                    }
                    sorter = new UcaSorter(field, locale, ucaStrength);
                } else {
                    sorter = new UcaSorter(field, locale, ucaStrength);
                }
            } else {
                sorter = new UcaSorter(field);
            }
        } else {
            throw newUnexpectedArgumentException(function, "lowercase", "raw", "uca");
        }
        switch((SortOperator) op.getOperator()) {
            case ASC:
                sortingInit.add(new FieldOrder(sorter, Order.ASCENDING));
                break;
            case DESC:
                sortingInit.add(new FieldOrder(sorter, Order.DESCENDING));
                break;
            default:
                throw newUnexpectedArgumentException(op.getOperator(), SortOperator.ASC, SortOperator.DESC);
        }
    }
    sorting = new Sorting(sortingInit);
    return ast.getArgument(0);
}