如何在Lucene.NET中使用運算符組合術語查詢和數字查詢？

Question

我試過以下方法來組合查詢，但我不知道如何在這些查詢中添加（AND，OR，NOT）運算符。

BooleanQuery booleanQuery = new BooleanQuery(); 
Query query1 = new TermQuery(new Term("Skill_Summary", "Java")); 
Query pageQueryRange = NumericRangeQuery.NewIntRange("Experience", 1, 2, true, true); 
booleanQuery.Add(query1, BooleanClause.Occur.MUST); 
booleanQuery.Add(pageQueryRange, BooleanClause.Occur.MUST); 
var hits = searcher.Search(booleanQuery); 

上述booleanQuery的結果是+Skill_Summary:Java +Experience:[1 TO 2]仍然沒有得到結果

String termQueryString = "Skill_Summary:\"Java\""; 
Query termQuery = queryParser.Parse(termQueryString); 
Query QueryRange = NumericRangeQuery.NewIntRange("Experience", 1, 3, true, true); 
Query query = termQuery.Combine(new Query[] { termQuery, QueryRange }); 
var hits = searcher.Search(query); 

Answer 1

使用Lucene.NET是使用BooleanQuery類查詢相結合，實現AND，OR和NOT功能的最簡單方法。當你把你的查詢到booleanQuery可以使用Occur參數指定查詢應該如何處理，

var termQuery = new TermQuery(new Term("Skill_Summary", "Java")); 
var booleanQuery = new BooleanQuery(); 

// Use 'Occur.MUST` to simulate an AND, or '+Skill_Summary:Java' 
booleanQuery.Add(termQuery, Occur.MUST); 

// Use 'Occur.SHOULD` to simulate an OR, or just 'Skill_Summary:Java' 
booleanQuery.Add(termQuery, Occur.SHOULD); 

// Use 'Occur.MUST_NOT` to simulate a NOT, or just '-Skill_Summary:Java' 
booleanQuery.Add(termQuery, Occur.MUST_NOT); 

在您的例子，你可能會發現TermQuery嘗試值字面匹配，所以它贏得不匹配「java」或「Java」等值。要做到這一點，你需要做的，

var booleanQuery = new BooleanQuery(); 

// Use QueryParser 
var query1 = new QueryParser(version, "Skill_Summary", analyzer).Parse("Java"); 
var pageQueryRange = NumericRangeQuery.NewIntRange("Experience", 1, 2, true, true); 
booleanQuery.Add(query1, BooleanClause.Occur.MUST); 
booleanQuery.Add(pageQueryRange, BooleanClause.Occur.MUST); 
var hits = searcher.Search(booleanQuery);