Topdocs lucene

Following is the declaration for org. Pass sort =null to merge sort by score descending. NET EXPERIMENTAL API, use at your own risk. A Document is a collection of Fields.

Each Field has semantics about how it is created and stored ( tokenized , store etc). See full list on lucene. String querystr = args. Query q = new QueryParser(title, analyzer).

Document level boosting – while indexing – by calling document. Boost()before a document is added to the index. Query level boosting – during search, by setting a boost on a query clause, calling Query.

Topdocs lucene

Indexing time boosts are preprocessed for storage efficiency and written to the directory (when writing the document) in a single byte (!) as follows: For each field of a document, all boosts of that field (i.e. all boosts under the same field name in that doc) are multiplied. The result is multiplied by the boost of the document, and also multiplied by a field length norm value that represents the length of that field in that doc (so shorter fields are automatically boosted up). These implementations can be combined in a wide variety of ways to provide complex querying capabilities along with information about where matches took place in the document collection. The Query section below highlights some of the more important Query classes.

For information on the other ones, see the package summary. I want to get all docIds stored in the index. There is also a problem.

Topdocs lucene

You can rate examples to help us improve the quality of examples. The following are top voted examples for showing how to use org. These examples are extracted from open source projects.

You can vote up the examples you like and your votes will be used in our system to generate more good examples. Ask Question Asked years, months ago. Active years, months ago. Which is correct but I would like to have the full list of docs in the even if the scores are very low.

TopDocs missing totalHits? Keep the rest of the files unchanged. Starting a ControlledRealTimeReopenThread which periodically refreshes the IndexReader in the background. Calling searcherManager. Refresh() after adding a. Lucene NRT Basic Example.

TopScoreDocCollector class. Show activity on this post. Document doc = searcher. Implements search over a single IndexReader. This answer is not useful.

Topdocs lucene

Applications usually need only call the inherited Search(Query, Int32) or Search(Query, Filter, Int32) methods. For performance reasons, if your index is unchanging, you should share a single IndexSearcher instance across multiple searches instead of creating a new one per-search. IndexSearcher is one of the core components of the searching process.

It is recommended you have.