self.addFilter = function(filter, lookup, value, isNot) {
            var item = {filter: filter, values: [], isNot: isNot};
            var types = filter.type.split('|'),
                keys = filter.key.split('|'),
                values = (value !== undefined) ? value.split('|') : [],
                lookups = (lookup !== undefined) ? lookup.split('|') : [];

            for (var i = 0; i < keys.length; i++) {
                var v = {type: types[i], lookup: lookups[i]};

                if (types[i] == 'dt') {
                    if (v.lookup == 'range') {
                        var range = values[i].split('r');
                        v.value = {from: moment(range[0]), to: moment(range[1])};
                    }
                    else if (['exact', 'lte', 'gte'].indexOf(v.lookup) > -1)
                        v.value = {from: moment(values[i])};
                    else
                        v.value = {days: values[i]};
                } else
                    v.value = values[i];
                v.lookup = lookups[i];
                if (types[i] == 'sl') {
                    v.facets = $scope.filtering.getFacetsAction(keys[i])({facet: keys[i]});
                }
                item.values.push(v);
            }

            return item;
        };

        self.getQueryFilters = function(query){
            var filters = [];
            angular.forEach(query.items, function(item) {
                var values = [], lookups = [];
                angular.forEach(item.values, function (v) {
                     if (v.lookup !== undefined && v.value !== undefined && v.value !== '') {
                         if (v.type == 'dt') {
                             if (v.lookup == 'range')
                                 v._value = v.value.from.format("YYYY-MM-DD") + 'r' + v.value.to.format("YYYY-MM-DD");
                             else if (['exact', 'lte', 'gte'].indexOf(v.lookup) > -1)
                                 v._value = v.value.from.format("YYYY-MM-DD");
                             else
                                 v._value = v.value.days;
                         } else
                             v._value = v.value;
                         values.push(v._value);
                         lookups.push(v.lookup);
                     }
                 });
                 filters.push({filter: item.filter.id, lookup: lookups.join('|'), value: values.join('|'), is_not: item.isNot});
            });
            return filters;
        };