lucene query builder

http://www.oschina.net/question/1092_560Escaping special charactersLucene supports escaping special characters in queries, and the following is a list of special characters for Lucene:+- | | ! ( ) { } [ ] ^ " ~ * ? : \Escape special characters We can use the symbol "\" before the character. For example we want to search: 2, we can use the following syntax:\ (1\+1\) \:2 Lucene Self-band function Queryparser.

[Laravel5.2 documentation] database -- Query Builder 1. Introduction The database query builder provides a convenient and smooth interface for creating and running database queries. The query builder can be used to perform most d

In Lucene, Booleanclause is used to represent a Boolean query clause relationship class, including: BooleanClause.Occur.MUST means and,booleanclause.occur.must_not represents not, BooleanClause.Occur.SHOULD represents or.Here's an example. ** * Query according to information classification and keywords * @param type, resource, with a value of news or prod

= reader.document (i);System.out.print ("ISBN:");System.out.println (Doc.get ("Booknumber"));System.out.print ("title:");System.out.println (Doc.get ("BookName"));System.out.print ("Release date:");System.out.println (Doc.get ("publishdate"));System.out.print ("Security Level:");System.out.print (Doc.get ("SecurityLevel"));int level = Integer.parseint (Doc.get ("SecurityLevel"));Switch (level) {Case security_advanced:SYSTEM.OUT.PRINTLN ("advanced");BreakCase Security_middle:SYSTEM.OUT.PRINTLN (

Lucene supports multiple search methods. You can select different methods as needed. 1. Search for entries (search for a single keyword) The main object is termquery. The call method is as follows: Term term = new term (field name, search keyword );Query query = new termquery (TERM );Hits hits = searcher. Search (query

/**** Query Builder translated by PHP siege master Http://blog.csdn.net/phpgcs Preparing Query Builder prepare for query Buil Der Building Data Retrieval Queries build a lookup query Building the data manipulation Queries build a

The query process is similar to the JDBC German Query Process. JDBC Query Process: create a connection between an application and a database, write a query statement, and search for related database tables through the query object. Put the

This article describes how to create a web interface query system. Environment: Ubuntu10.10Tomcat6. x1. first, modify the build. xml file, and modify the diff: xxx @ ubuntu :~ /Workspace/lucene $ diffbuild. xmlbuild. old. xml45, 50d44 lt; pathid = "wbia. classpa This article describes how to create a web interface query system. Environment:Ubuntu 10.10Tomcat 6.x

Ospod. Forum uses Lucene as the core of the search engine. For Lucene paging, ospod encapsulates hits twice. After the desired result set is retrieved, turn off hits, greatly improving the search efficiency. The reference code is as follows: /*** Index paging object*/Private pagination page;/*** Number of hit result data*/Private int hitslength = 0;/*** Hit result set of the current page*/Private list r

Guidance:You can search by page in Lucene in either of the following ways:One is to put the search result set directly into the session, but if the result set is very large and there is a large concurrent access, it is likely that the server memory is insufficient, server downtimeAnother method is to re-search each time. This avoids the possibility of memory overflow. However, Io operations are required for each search. If large concurrent access occu

/*** gets the last scoredoc*, based on page number and paging size @param pageIndex* @param pagesize * @param query* @param indexSearcher* @return * @throws ioexception*/privatescoredocgetlastscoredoc (intpageindex,intpagesize,query query,indexsearcherindexsearcher) throwsioexception{if (pageIndex==1) returnnull;// If the first page returns an empty intnum=pagesi

Using lucene for Box-based query is the easiest way to look at the Code directly: Private list NumericRangeQuery is used to express the longitude and latitude ranges. IKAnalyzer is used for Chinese word segmentation.

The previous article introduced PHP using DAO (Database Access object interface) to access the database, using DAO requires programmers to write SQL statements, for some complex SQL statements, Yii provides query Builder to help programmers generate SQL statements, query Builder provides an object-oriented approach to