I have this function for CardBinSpecification

public static Specification<CardBin> dynamicQuery(Map<String, Object> filters) {
        return (root, query, criteriaBuilder) -> {
            List<Predicate> predicates = new ArrayList<>();

            // Construct predicates based on non-empty parameters
            if (filters.containsKey("bin") && !filters.get("bin").toString().isEmpty()) {
                predicates.add(criteriaBuilder.equal(root.get("bin"), filters.get("bin").toString()));
            }

            if (filters.containsKey("bankcode") && !filters.get("bankcode").toString().isEmpty()) {
                predicates.add(criteriaBuilder.equal(root.get("bankcode"), filters.get("bankcode").toString()));
            }

            if (filters.containsKey("bankname") && !filters.get("bankname").toString().isEmpty()) {
                predicates.add(criteriaBuilder.equal(root.get("bankname"), filters.get("bankname").toString()));
            }

            if (filters.containsKey("switchname") && !filters.get("switchname").toString().isEmpty()) {
                predicates.add(criteriaBuilder.equal(root.get("switchname"), filters.get("switchname").toString()));
            }

            // Apply the predicates to the query
            query.where(criteriaBuilder.and(predicates.toArray(new Predicate[0])));

            // Apply the selections to the query (if needed)
            if (filters.containsKey("searchContent")) {
                List<String> searchContent = (List<String>) filters.get("searchContent");
                List<Selection<?>> selections = new ArrayList<>();
                for (String field : searchContent) {
                    selections.add(root.get(field));
                }
                query.multiselect(selections.toArray(new Selection<?>[0]));
            }

            return query.getRestriction();
        };
    }

and searchContent is [“bankname”,”switchname”]

however I keep getting all of the column within CardBin entity object, how do i fix this?