lucene

问题 I have one static HashMap for my entire system which contains some object's references; let's call it myHash . The objects are only instantiated once I needed them such as private static HashMap<String, lucene.store.Directory> directories; public static Object getFoo(String key) { if (directories == null) { directories = new HashMap<String, Directory>(); } if (directories.get(key) == null) { directories.put(key, new RAMDirectory()); } return directories.get(key); // warning } Now, Eclipse is

问题 I am doing data import from Mongo to Solr. For this I need to add new fields into the Solr schema. I am using solr server 5.1.0. Schema.xml is not available in solrhome/server/solr/core/config directory so I copied one from solr-5.1.0\server\solr\configsets\basic_configs\conf to core\config and added fields into this. Now when we start Solr server I get WARN message that I should remove the schema.xml file as this is now managed-schema. These fields should be moved to managed-schema file, but

问题 I am trying to integrate solr with java using solrj. The result retrieved are of the format { numFound=3, start=0, docs=[ SolrDocument{ id=IW-02, name=iPod&iPodMiniUSB2.0Cable, manu=Belkin, manu_id_s=belkin, cat=[ electronics, connector ], features=[ carpoweradapterforiPod, white ], weight=2.0, price=11.5, price_c=11.50, USD, popularity=1, inStock=false, store=37.7752, -122.4232, manufacturedate_dt=TueFeb1418: 55: 59EST2006, _version_=1452625905160552448 } Now this is the javabin format. How

问题 I am trying to integrate solr with java using solrj. The result retrieved are of the format { numFound=3, start=0, docs=[ SolrDocument{ id=IW-02, name=iPod&iPodMiniUSB2.0Cable, manu=Belkin, manu_id_s=belkin, cat=[ electronics, connector ], features=[ carpoweradapterforiPod, white ], weight=2.0, price=11.5, price_c=11.50, USD, popularity=1, inStock=false, store=37.7752, -122.4232, manufacturedate_dt=TueFeb1418: 55: 59EST2006, _version_=1452625905160552448 } Now this is the javabin format. How

问题 In Database : I have two tables. and there are three columns in each table. Table_A (column_primaryKey_A,column_A1,column_A2) Table_B (column_primaryKey_B,column_B1,column_B2) Below is the SQL that I want to do using Lucene: SELECT * FROM Table_A,Table_B WHERE column_primaryKey_A = column_primaryKey_B AND column_A1 = XX AND column_B1 = XX I want to create two index documents（ Index_Table_A , Index_Table_A ）and how do I implement above things using the mechanism of Lucene or Hibernate Search?

问题 In Database : I have two tables. and there are three columns in each table. Table_A (column_primaryKey_A,column_A1,column_A2) Table_B (column_primaryKey_B,column_B1,column_B2) Below is the SQL that I want to do using Lucene: SELECT * FROM Table_A,Table_B WHERE column_primaryKey_A = column_primaryKey_B AND column_A1 = XX AND column_B1 = XX I want to create two index documents（ Index_Table_A , Index_Table_A ）and how do I implement above things using the mechanism of Lucene or Hibernate Search?

问题 System properties: Java 1.6 Mac OSX version 10 Ant 1.8 Scenario: I am working on my final year project which is to create a website which uses Lucene to search my website and my database. I am working through lucene demos here http://lucene.apache.org/java/2_3_2/demo.html which talks about classpath http://lucene.apache.org/java/2_3_2/demo3.html and a web example I have created a .bash_profile file in my home directory /Users/philhunter/ which sets my classpaths: CLASSPATH=${CLASSPATH}:/Users

问题 I want to know , What is the advantage of Lucene searching and indexing ? Is searching with Lucene as fast as other searching algorithm like Quick Search? What about indexing ? I want to know more about advantage of Lucene rather that others . thanks . 回答1: I believe you want us to compare two incomparable things. Quick Search is a string search algorithm, meant to find a string in a long text document. Lucene is a search library , meant to index and search a collection of documents, ranking

问题 I am using Crawler controller to crawl all pages of a medium website. It randomly crawls 2-3 pages and then it causes a lock on the IndexWriter Directory dir = FSDirectory.open(new File(index)); IndexWriterConfig conf = new IndexWriterConfig(org.apache.lucene.util.Version.LUCENE_41,new StandardAnalyzer(org.apache.lucene.util.Version.LUCENE_41)); writer = new IndexWriter(dir, conf); // line which throws lock exception. Logs: From: SiteSearch.KCCrawlerController.(80): Lock obtain timed out:

问题 Friends, I am new to lucene full text search. i have developed page with full text seach. it works fine till. but now i want to add extra condition like where clause. how to do it. The requirement given for me is, i have to list proposal which is created by logged in user. I have to add this condition in back end without user knowledge. I heard about filter. Which filter is correct?how to apply that.Give me an sample. this evening i have demo. help me. 回答1: First, you need to ensure that the