BExIS.Ddm.Providers.DummyProvider.Helpers.MetadataReader.GetAllMetadataDatasetsWithListOfSearchCriteria C# (CSharp) Метод

        public static List<Metadata> GetAllMetadataDatasetsWithListOfSearchCriteria(List<Metadata> data, SearchCriteria searchCriteria)
        {
            IEnumerable<Metadata> newData = new List<Metadata>();
            List<Metadata> temp = new List<Metadata>();

            if (searchCriteria.SearchCriteriaList.Count() > 0)
            {
                bool first = true;

                foreach (SearchCriterion sco in searchCriteria.SearchCriteriaList)
                {
                    IEnumerable<Metadata> tempValue = new List<Metadata>();
                    temp = new List<Metadata>();

                    if (sco.Values.Count > 0)
                    {

                        IEnumerable<Metadata> newValueData = new List<Metadata>();
                        foreach (string value in sco.Values)
                        {
                            //newValueData = new List<Metadata>();

                            if (sco.SearchComponent.Name == "all") temp = GetAllMetadataDatasetsByValue(data, value);
                            else
                            {
                                if (sco.SearchComponent.Type == SearchComponentBaseType.Property)
                                {
                                    Property sc = (Property)sco.SearchComponent;
                                    if (sc.UIComponent == Property.UI_RANGE && sc.DataType == DataHelperConstClass.PROPERTY_DATATYPE_DATE)
                                    {
                                        bool desc = false;
                                        if (sc.DataSourceKey == "endDate")
                                            desc = true;

                                        temp = GetAllMetadataDatasetsByRangeNode(data, sco.SearchComponent.Name, value, desc);
                                    }
                                    else
                                    {
                                        temp = GetAllMetadataDatasetsByNode(data, sco.SearchComponent.Name, value);
                                    }
                                }
                                else
                                {
                                        temp = GetAllMetadataDatasetsByNode(data, sco.SearchComponent.Name, value);
                                }
                            }

                            if (tempValue.Count() == 0) tempValue = temp;
                            else
                            {

                                tempValue = tempValue.Union(temp);
                            }

                        }

                        if (first == false)
                        {
                            newData = newData.Intersect(tempValue);
                        }
                        else
                        {
                            newData = tempValue;
                            first = false;
                        }
                    }
                    else
                    {
                        if (first == true)
                        {
                            newData = data;
                            first = false;
                        }
                        else newData = newData.Intersect(data);
                    }
                }

                return newData.ToList();
            }
            else return data;
        }