ListingQuery.java 文件源码

private void addToWhereConstraint(ListingPredicate listingPredicate) {
    if (listingPredicate != null) {

        Predicate predicate = null;
        List<ListingPredicate> filters = new ArrayList<>();
        Map<String, Field> fieldMap = ListingUtil.getFields(domainClass).stream().collect(Collectors.toMap(field -> field.getName(), field -> field));

        if (listingPredicate.hasPredicates()) {
            filters.addAll(listingPredicate.getPredicates());
        } else {
            filters.add(new ListingPredicate().filter(listingPredicate.getAttribute(), listingPredicate.getFilter()));
        }
        predicate = filterByPredicateTree(listingPredicate.isDisjunctive(), listingPredicate.isNegation(), filters, fieldMap);

        if (predicate != null) {
            if (listingPredicate.isNegation()) {
                predicate = criteriaBuilder.not(predicate);
            }
            whereConstraints.add(predicate);
        }
    }
}