lucene

Searching for exact phrase

由 扶醉桌前 提交于 2020-01-15 12:07:24
问题 How do i achieve "Exact Phrase" functionality on this field using BooleanQuery/any other class? For example if a user types in "top selling book" then it should return books which has this phrase in its description. Thanks again! 回答1: Having the query within double quotes should work. 来源： https://stackoverflow.com/questions/431556/searching-for-exact-phrase

Solr case insensitve

由 泪湿孤枕 提交于 2020-01-15 12:06:18
问题 Hallo, I'am implementing an autocompletion feature in Solr and have one problem. For autocompletion I am using <fieldType name="text_auto" class="solr.TextField" sortMissingLast="true" omitNorms="true"> <analyzer> <tokenizer class="solr.KeywordTokenizerFactory"/> <filter class="solr.LowerCaseFilterFactory" /> </analyzer> </fieldType> I thought that the LowerCaseFilter should make the Token Case insensitiv but that ist wrong. In fact in just lowercases the Token which means that a query like

Solr case insensitve

由 末鹿安然 提交于 2020-01-15 12:04:34
问题 Hallo, I'am implementing an autocompletion feature in Solr and have one problem. For autocompletion I am using <fieldType name="text_auto" class="solr.TextField" sortMissingLast="true" omitNorms="true"> <analyzer> <tokenizer class="solr.KeywordTokenizerFactory"/> <filter class="solr.LowerCaseFilterFactory" /> </analyzer> </fieldType> I thought that the LowerCaseFilter should make the Token Case insensitiv but that ist wrong. In fact in just lowercases the Token which means that a query like

How to set ResponseWriter to non-default in Solr

由 那年仲夏 提交于 2020-01-15 11:49:07
问题 I have the following code, which is simply searching the Solr Server. SolrServer server = new CommonsHttpSolrServer(url); SolrQuery searchquery = new SolrQuery("company profile"); QueryResponse response = server.query(searchquery) I want to have the response in json, other than the default which is xml. So I went into the solrconfig.xml file and enabled the following line: <queryResponseWriter name="json" class="org.apache.solr.request.JSONResponseWriter" /> However, from the console, I'm

Exact field search with solr/lucene

由 感情迁移 提交于 2020-01-15 11:34:28
问题 I have text field. And for given query I want to find all documents that contains indexed field values. query.contains(document.field_name) Examples: 1. field_name:"a b" 2. field_name:"a b c" For query "a b d" I want to find only first item. Not efficient way to do this is basically generate all substrings of query and index field as a string. Is it possible to implements such requirements in Solr using existen functionality? If not what is the most efficient algorithm/way to do this? PS.

Exact field search with solr/lucene

由 妖精的绣舞 提交于 2020-01-15 11:34:25
问题 I have text field. And for given query I want to find all documents that contains indexed field values. query.contains(document.field_name) Examples: 1. field_name:"a b" 2. field_name:"a b c" For query "a b d" I want to find only first item. Not efficient way to do this is basically generate all substrings of query and index field as a string. Is it possible to implements such requirements in Solr using existen functionality? If not what is the most efficient algorithm/way to do this? PS.

How do I get the tf and idf score from a Solr query?

由 不羁岁月 提交于 2020-01-15 06:30:06
问题 Following Solr documentations (https://cwiki.apache.org/confluence/display/solr/Function+Queries and others) I should just put idf(fieldname, 'term') as I do with termfreq(fieldname, 'term') in the field list. However, whenever I try this I get an exception as: org.apache.solr.client.solrj.SolrServerException: No live SolrServers available to handle this request By looking at the logs I could find: null:java.lang.UnsupportedOperationException: requires a TFIDFSimilarity (such as

lucene中创建索引库

由 和自甴很熟 提交于 2020-01-15 01:57:18
package com.hope.lucene;import org.apache.commons.io.FileUtils;import org.apache.lucene.document.Document;import org.apache.lucene.document.Field;import org.apache.lucene.document.TextField;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.store.Directory;import org.apache.lucene.store.FSDirectory;import org.junit.Test;import java.io.File;/** * @author newcityman * @date 2020/1/15 - 0:01 */public class LuceneFirst { @Test public void createIndex() throws Exception{ //1、创建一个Director对象，指定索引库保存的位置 //把索引库保存到磁盘 Directory directory =

How to get a better Lucene/Solr score if word queried was at the beginning of the indexed field?

由 纵饮孤独 提交于 2020-01-14 14:33:11
问题 I read at some point something explaining what to do to have Lucene/Solr give a better score if my queried word was found at the beginning of the description I indexed. Cannot find it anymore on the net. Anybody has the links handy ? Thank you. 回答1: Payloads could help you do that. Actually, payloads let you give an arbitrary boost to any token of your token stream, so you can boost depending on anything: the position in the stream, the font weight, whether the token contains capital letters,

JAVA课程笔记系列： 基于SpringBoot的Data Solr搜索引擎开发

由 佐手、 提交于 2020-01-14 12:22:21
基于SpringBoot的Data Solr搜索引擎开发 关于Apache Solr的简介 Solr它是一种开放源码的、基于 Lucene Java 的搜索服务器，易于加入到 Web 应用程序中。Solr 提供了层面搜索(就是统计)、命中醒目显示并且支持多种输出格式（包括XML/XSLT 和JSON等格式）。它易于安装和配置，而且附带了一个基于HTTP 的管理界面。可以使用 Solr 的表现优异的基本搜索功能，也可以对它进行扩展从而满足企业的需要。Solr的特性包括： 高级的全文搜索功能 专为高通量的网络流量进行的优化 基于开放接口（XML和HTTP）的标准 综合的HTML管理界面 可伸缩性－能够有效地复制到另外一个Solr搜索服务器 使用XML配置达到灵活性和适配性 可扩展的插件体系 支持像英语，德语，中国，日本，法国和许多主要语言 Apache Solr和Lucene的关系 Solr 与Lucene 并不是竞争对立关系，恰恰相反Solr 依存于Lucene ，因为Solr 底层的核心技术是使用Apache Lucene 来实现的，简单的说Solr 是Lucene 的服务器化。需要注意的是Solr 并不是简单的对Lucene 进行封装，它所提供的大部分功能都区别于Lucene。 Apache Solr 相关目录说明 Solr程序包的结构说明 bin ：solr相关运行脚本
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