lucene query builder

Lucene provides a rich API to mix and customize the queries you need, and you can use the powerful query syntax parsing provided by query parser to construct the query you want. This article introduces the query syntax of Lucene i

Lucene is a subproject of the Jakarta Project Team of the Apache Software Foundation. It is an openSource codeIs not a complete full-text search engine, but a full-text search engine architecture, provides a complete query engine and index engine, some text analysis engines (two Western languages: English and German ). Lucene aims to provide software developers w

1 Use of Lucene field 1.1 field featureDocument is the carrier of field (field), and a document consists of multiple fields. field consists of a name and a value, and the value of field is the content to be indexed and the content to search for. Whether participle (tokenized)is: The value of field is the word processing, the purpose of the word is to index . such as: Product name, product description. These content users will be queried by en

Yesterday we learned about the Indexsearcher build process for Lucene search (http://blog.csdn.net/wuyinggui10000/article/details/45698667), Have a general understanding of Lucene's indexsearcher, know how to create indexsearcher, we should begin to learn to use Indexsearcher to index the search, In this section we learn the principles of indexing and the writing of tool classes that write indexed queries based on their related principles;Indexsearche

This is the next step to learn from me Lucene ()---lucene search facet index principle and Facet query instance (http://blog.csdn.net/wuyinggui10000/article/details/ 45973769), the previous article is mainly statistical facet of the dim and the corresponding number of each species, the personal feeling that the group is different from

Lucene provides a variety of APIs to combine and customize the queryserver you need. You can also use the powerful query Syntax Parsing provided by query parser to construct the queryserver you want. This article introduces Lucene's query syntax in detail. Parses a query str

Grouping introductionWhen we do lucene search, we may use the statistics of a certain condition, such as statistics of how many provinces, in SQL query we can use distinct to complete similar functions, you can also use GROUP by to query column query. In Lucene we achieve si

file or the data in the data source with the updated label. Convert data into required document and index The advantage of doing so is to completely remove the index from the above and then rebuild it: Data source query scans for small amounts of data The corresponding update index has fewer number of bars. Reduced a lot of indexwriter commit and close these time-consuming operations The above overcomes the problem of incre

These two days overtime, can not take into account the update of the blog, please forgive us.Sometimes after we create the index, the data source may have updated content, and we imagine the database can be directly reflected in the query, here is what we call the incremental index. How can we achieve such a demand? The implementation of this incremental index is not provided within Lucene;Here, it is commo

); Analyzer Analyzer = new Ikanalyzer (true); Indexwriterconfig config = new Indexwriterconfig (analyzer); Config.setopenmode (openmode.create_or_append); spellchecker.setaccuracy (0f);//highfrequencydictionary dire = new Highfrequencydictionary (ReadeR, field, Thresh) spellchecker.indexdictionary (New Filedictionary (New FileInputStream ("D:\\hadoop\\lucene_ Suggest\\src\\suggest.txt "))), config,false); string[] Similars = spellchecker.suggestsimilar ("China", ten); for (String similar:similar

/**** query Builder translated by PHP siege Http://blog.csdn.net/phpgcs preparing query Builder preparation Qu ery Builder Building Data retrieval Queries build up a search query building and data manipulation Queries to build a d

Queries Builder (query Builder) 1. New data You can insert one/more data by using the Insert method of the Query Builder: Db::table (' users ')->insert ([ [' ID ' =>1, ' name ' => ' laravel ', ' email ' => ' laravel@test.com ', ' password ' => ' 123 '], [' ID ' =>2, ' na

1 use of the Lucene query Lucene is the syntax by which query objects generate queries by using the query object to execute queries. such as Bookname:java, the search for document data that contains Java in the BookName domain. 1.1 Two ways to create a

Search results highlighting is very important for the user's experience and friendliness, and can quickly mark the user's search for keywords. The index in this example still uses the index created in the previous blog (lucene query index), which highlights the lucene4.x highlighted fast highlight front.Implementation results:Core codePackage Ucas. IR. Lucene;Imp

Lucene query syntax Http://lucene.apache.org/java/2_0_0/queryparsersyntax.htmlFrom: http://liyu2000.nease.net/article/Lucene/queryparsersyntax.htm Introduction Lucene provides APIs that help you create self-built queries. It also provides a powerful query language through qu

) +AddRange (builder, valsize, Maxbound ~mask, Maxbound, shift); - the //recurse to next precision *Minbound =Nextminbound; $Maxbound =Nextmaxbound;Panax Notoginseng } -}For example: 1001,0001-1111,0010 split into1:1001,0001-1001,1111 (after the No. 0 shift 0x91-0x9f has 15 term)and 1111,0000-1111,0010 (the No. 0 offset after the 0XF0-0F2 has 3 term)2:1002,0000–1110,1111 after right shift (0X11-0X15 has 5 term)Find 23 lexicographic s

[] Fields= {"FileName", "Filecontent" }; //parameter 1: domain of the default query//Parameter 2: The parser usedMultifieldqueryparser Queryparser =NewMultifieldqueryparser (Fields,NewIkanalyzer ()); //*:* Domain: ValueQuery query = Queryparser.parse ("Javaweb is Computer"); Printresult (indexsearcher, query); //Close ResourceIndexsearcher.getindexreader (

Lucene also provides a wildcard query, which is wildcardquery. PackageCh11;ImportOrg.apache.lucene.analysis.standard.StandardAnalyzer;Importorg.apache.lucene.document.Document;ImportOrg.apache.lucene.document.Field;ImportOrg.apache.lucene.index.IndexWriter;Importorg.apache.lucene.index.Term;Importorg.apache.lucene.search.Hits;ImportOrg.apache.lucene.search.IndexSearcher;ImportOrg.apache.lucene.search.Wildc

Lucene provides a rich set of APIs to assemble and customize the queries you need, and you can use the powerful query syntax parsing provided by query parser to construct the query you want. This article describes the query syntax for Lu