【发布时间】：2021-11-09 00:04:51
【问题描述】：
我将 Solr 7.5 与 Sitecore 9.2 一起使用。我有一些复杂的代码会生成一个搜索查询，我现在正在尝试应用提升来将页面项目优先于媒体资产（相关行从 isAssetPredicate... 开始。
public override Expression<Func<T, bool>> Build()
{
string query = _values.FirstOrDefault();
string queryLower = query.ToLower();
if (string.IsNullOrEmpty(query)) return null;
var predicate = PredicateBuilder.False<T>();
var exactPredicate = PredicateBuilder.False<T>();
exactPredicate = exactPredicate.Or(x => x.ItemPartNumberLower.Contains(queryLower)).Boost(90);
exactPredicate = exactPredicate.Or(x => x.TitleLower.Contains(queryLower)).Boost(99);
exactPredicate = exactPredicate.Or(x => x.Keywords.Contains(queryLower)).Boost(9);
exactPredicate = exactPredicate.Or(x => x.FileType.Contains(queryLower)).Boost(9);
exactPredicate = exactPredicate.Or(x => x.AggregatedSearchFields.Contains(queryLower)).Boost(9);
var fuzzyPredicate = PredicateBuilder.False<T>();
fuzzyPredicate = fuzzyPredicate.Or(x => x.ItemPartNumberLower.Contains(queryLower)).Boost(90);
fuzzyPredicate = fuzzyPredicate.Or(x => x.TitleLower.Contains(queryLower)).Boost(99);
fuzzyPredicate = fuzzyPredicate.Or(x => x.Keywords.Contains(queryLower)).Boost(9);
fuzzyPredicate = fuzzyPredicate.Or(x => x.FileType.Contains(queryLower)).Boost(9);
fuzzyPredicate = fuzzyPredicate.Or(x => x.AggregatedSearchFields.Contains(queryLower)).Boost(9);
// try searching for each term separately rather than exact match
var queryParts = queryLower.Trim().Split(' ');
if (queryParts.Length > 1)
{
var partsPredicate = PredicateBuilder.True<T>();
var fuzzyPartsPredicate = PredicateBuilder.False<T>();
foreach (var part in queryParts)
{
if (String.IsNullOrEmpty(part)) continue;
var subQuery = PredicateBuilder.False<T>();
subQuery = subQuery.Or(x => x.TitleLower.Contains(part)).Boost(99);
subQuery = subQuery.Or(x => x.ItemPartNumberLower.Contains(part)).Boost(95);
subQuery = subQuery.Or(x => x.Keywords.Contains(part)).Boost(80);
subQuery = subQuery.Or(x => x.FileType.Contains(part)).Boost(1);
subQuery = subQuery.Or(x => x.AggregatedSearchFields.Contains(part)).Boost(1);
partsPredicate = partsPredicate.And(subQuery);
var subQueryFuzzy = PredicateBuilder.False<T>();
subQueryFuzzy = subQueryFuzzy.Or(x => x.TitleLower.Like(part)).Boost(99);
subQueryFuzzy = subQueryFuzzy.Or(x => x.ItemPartNumberLower.Like(part)).Boost(95);
subQueryFuzzy = subQueryFuzzy.Or(x => x.Keywords.Like(part)).Boost(80);
subQueryFuzzy = subQueryFuzzy.Or(x => x.FileType.Like(part)).Boost(1);
subQueryFuzzy = subQueryFuzzy.Or(x => x.AggregatedSearchFields.Like(part)).Boost(1);
fuzzyPartsPredicate = fuzzyPartsPredicate.Or(subQueryFuzzy);
}
exactPredicate = exactPredicate.Or(partsPredicate).Boost(1);
fuzzyPredicate = fuzzyPredicate.Or(fuzzyPartsPredicate).Boost(1);
}
var queryPredicate = PredicateBuilder.False<T>();
queryPredicate = queryPredicate.Or(exactPredicate).Boost(99);
queryPredicate = queryPredicate.Or(fuzzyPredicate).Boost(1);
predicate = predicate.Or(queryPredicate);
if (HasAttribute(FieldType.Title))
{
predicate = predicate.Or(GetQueryExpression(FieldType.Title, query));
}
if (HasAttribute(FieldType.Description))
{
predicate = predicate.Or(GetQueryExpression(FieldType.Description, query));
}
if (HasAttribute(FieldType.Body))
{
predicate = predicate.Or(GetQueryExpression(FieldType.Body, query));
}
else if (QueryFormatter.NeedsFormatting(query))
{
predicate = predicate.Or(x => x.Content.MatchWildcard(QueryFormatter.FormatQuery(query)));
}
else
{
predicate = predicate.Or(x => x.Content.Like(query, SiteSettings.MinimumSimilarity));
}
var isAssetPredicate = PredicateBuilder.True<T>().And(x => x.IsAsset.Boost(0.0000001f)).And(predicate).Boost(0.0000001f);
var isPagePredicate = PredicateBuilder.True<T>().And(x => !x.IsAsset.Boost(9999f)).And(predicate).Boost(9f);
var finalPredicate = PredicateBuilder.True<T>();
finalPredicate = finalPredicate.Or(isAssetPredicate.Boost(0.1f)).Boost(0.1f);
finalPredicate = finalPredicate.Or(isPagePredicate.Boost(9f)).Boost(9f);
return finalPredicate;
}
如您所见，我已经在多个地方进行了提升（我已经在谓词内和谓词外分别以及一起尝试过），但没有一个在查询中应用：
?q=(((c_is_asset_b:(True)^0.01 AND (c_item_part_number_lower_s:(*systemkit*) OR c_title_lower_s:(*systemkit*) OR c_keywords_t:(*systemkit*) OR c_file_type_s:(*systemkit*) OR c_aggregated_search_fields_s:(*systemkit*) OR (c_item_part_number_lower_s:(*systemkit*) OR c_title_lower_s:(*systemkit*) OR c_keywords_t:(*systemkit*) OR c_file_type_s:(*systemkit*) OR c_aggregated_search_fields_s:(*systemkit*)) OR (title_t:(systemkit~100000))^2.5 OR (summary_t:(systemkit~100000))^1.5 OR _content:(systemkit~100000))) OR ((-c_is_asset_b:(True) *:*)^9999 AND (c_item_part_number_lower_s:(*systemkit*) OR c_title_lower_s:(*systemkit*) OR c_keywords_t:(*systemkit*) OR c_file_type_s:(*systemkit*) OR c_aggregated_search_fields_s:(*systemkit*) OR (c_item_part_number_lower_s:(*systemkit*) OR c_title_lower_s:(*systemkit*) OR c_keywords_t:(*systemkit*) OR c_file_type_s:(*systemkit*) OR c_aggregated_search_fields_s:(*systemkit*)) OR (title_t:(systemkit~100000))^2.5 OR (summary_t:(systemkit~100000))^1.5 OR _content:(systemkit~100000)))) AND _val_:("recip(ms(NOW, c_date_tdt), 3.16e-11, 100, 1.8)"))&start=0&rows=100&fq=((((-c_alltemplates_sm:(b906556e0ab94174952026c282933569) *:*) OR end_date_tdt:[2021-09-13T17:25:05.524Z TO *] OR start_date_tdt:[2021-09-13T17:25:05.524Z TO *]) AND c_searchable_b:(True)) AND _language:(en))&fq=_indexname:(sitecore_web_index)&facet=true&facet.field=c_locations_sm&f.c_locations_sm.facet.mincount=1&facet.field=c_architectures_sm&f.c_architectures_sm.facet.mincount=1&facet.field=c_topics_sm&f.c_topics_sm.facet.mincount=1&facet.field=c_content_type_s&f.c_content_type_s.facet.mincount=1&facet.field=c_file_type_s&f.c_file_type_s.facet.mincount=1&wt=xml
（标题和摘要中有一些提升，但我试图提升的 Is_Asset 字段没有）
【问题讨论】：
标签： c# solr predicate solr-boost