private void parseConstantFieldMap(String nodeId, List<StreamField> fields,
            Map<String, StreamField> constantFieldMap) {
        if (CollectionUtils.isEmpty(fields)) {
            return;
        }
        for (StreamField field : fields) {
            if (field.getFieldValue() != null) {
                constantFieldMap.put(String.format("%s-%s", nodeId, field.getFieldName()), field);
            }
        }
    }
Get constant field from stream fields

@param nodeId node id
@param fields stream fields
@param constantFieldMap constant field map
inlong-manager/manager-service/src/main/java/org/apache/inlong/manager/service/resource/sort/SortFlinkConfigOperator.java