When I search by phrase "ph1 ph2" it finds texts that contains "ph1" or "ph2".
String line = "ph1 ph2";
QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, field, analyzer);
Query query = parser.parse(line);
Anybody knows how to search by 1) phrase ("ph1 ph2"). Example: This is sentence ph1 ph2. 2) phrase with maximum distance("ph1 ph2 ~3"). Example This ph1 is sentence ph2.
P.S I used standard Lucene Indexer to index my files. If this example is not clear view http://www.lucenetutorial.com/lucene-query-syntax.html
Here's full code:
String index = "C:/programs/lucenedemo/index";
String field = "contents";
IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(index)));
IndexSearcher searcher = new IndexSearcher(reader);
Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_40);
//QueryParser parser = new QueryParser(Version.LUCENE_40, field, analyzer);
String line = "ph1 ph2";
QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, field, analyzer);
Query query = parser.parse(line);
//doPagingSearch(searcher, query, hitsPerPage, raw, queries == null && queryString == null);
//doPagingSearch
TopDocs results = searcher.search(query, 300000);
ScoreDoc[] hits = results.scoreDocs;
System.out.println(results.totalHits);
for (int i=0;i<10;i++) {
Document doc = searcher.doc(hits[i].doc);
String path = doc.get("path");
if (path != null) System.out.println((i+1) + ". " + path);
}
//end of doPagingSearch
reader.close();
You may want to use a SpanQuery.
Specifically, you can create a SpanNearQuey, passing the constructor an array of SpanTermQuerys, one for each clause in the phrase, and an int representing the "slop", or maximum distance (as well as a boolean indicating whether the terms must be in order).
To search, use the getSpans method on the query that you have created.
Note that this will give you a list of all such occurrences, and not a list of matching documents. Depending on how you would like to present the results, you may need to iterate over the spans and group them according to document, etc.