本文整理汇总了C#中Lucene.Net.Search.WildcardQuery.Clone方法的典型用法代码示例。如果您正苦于以下问题：C# WildcardQuery.Clone方法的具体用法？C# WildcardQuery.Clone怎么用？C# WildcardQuery.Clone使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Lucene.Net.Search.WildcardQuery的用法示例。
在下文中一共展示了WildcardQuery.Clone方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: QueryPartToQuery
// search_subset_uris is a list of Uris that this search should be
// limited to.
static protected void QueryPartToQuery (QueryPart abstract_part,
bool only_build_primary_query,
ArrayList term_list,
QueryPartHook query_part_hook,
out LNS.Query primary_query,
out LNS.Query secondary_query,
out HitFilter hit_filter)
{
primary_query = null;
secondary_query = null;
// By default, we assume that our lucene queries will return exactly the
// matching set of objects. We need to set the hit filter if further
// refinement of the search results is required. (As in the case of
// date range queries, for example.) We essentially have to do this
// to make OR queries work correctly.
hit_filter = true_hit_filter;
// The exception is when dealing with a prohibited part. Just return
// null for the hit filter in that case. This works since
// prohibited parts are not allowed inside of OR queries.
if (abstract_part.Logic == QueryPartLogic.Prohibited)
hit_filter = null;
if (abstract_part == null)
return;
// Run the backend hook first.
// This gives a chance to modify create new queries based on
// backend specific properties
if (query_part_hook != null)
abstract_part = query_part_hook (abstract_part);
if (abstract_part == null)
return;
if (abstract_part is QueryPart_Text) {
QueryPart_Text part = (QueryPart_Text) abstract_part;
if (! (part.SearchFullText || part.SearchTextProperties))
return;
LNS.BooleanQuery p_query = new LNS.BooleanQuery ();
LNS.BooleanQuery s_query = new LNS.BooleanQuery ();
bool added_subquery = false;
if (part.SearchFullText) {
LNS.Query subquery;
subquery = StringToQuery ("Text", part.Text, term_list);
if (subquery != null) {
p_query.Add (subquery, LNS.BooleanClause.Occur.SHOULD);
added_subquery = true;
}
// FIXME: HotText is ignored for now!
// subquery = StringToQuery ("HotText", part.Text);
// if (subquery != null) {
// p_query.Add (subquery, LNS.BooleanClause.Occur.SHOULD);
// added_subquery = true;
// }
}
if (part.SearchTextProperties) {
LNS.Query subquery;
subquery = StringToQuery ("PropertyText", part.Text, term_list);
if (subquery != null) {
p_query.Add (subquery, LNS.BooleanClause.Occur.SHOULD);
// Properties can live in either index
if (! only_build_primary_query)
s_query.Add (subquery.Clone () as LNS.Query, LNS.BooleanClause.Occur.SHOULD);
added_subquery = true;
}
// The "added_subquery" check is to handle the situation where
// a part of the text is a stop word. Normally, a search for
// "hello world" would break down into this query:
//
// (Text:hello OR PropertyText:hello OR PropertyKeyword:hello)
// AND (Text:world OR PropertText:world OR PropertyKeyword:world)
//
// This fails with stop words, though. Let's assume that "world"
// is a stop word. You would end up with:
//
// (Text:hello OR PropertyText:hello OR PropertyKeyword:hello)
// AND (PropertyKeyword:world)
//
// Which is not what we want. We'd want to match documents that
// had only "hello" without also having a keyword "world". In
// this case, don't create the PropertyKeyword part of the query,
// since it would be included in the larger set if it weren't
// required anyway.
if (added_subquery) {
Term term;
term = new Term ("PropertyKeyword", part.Text.ToLower ()); // make sure text is lowercased
// FIXME: terms are already added in term_list. But they may have been tokenized
// The term here is non-tokenized version. Should this be added to term_list ?
//.........这里部分代码省略.........