Here we want a PrefixQuery to match both the tokenized first and last name with a case insensitive match. Searching for names users are not going to upper case them. Obviously, will have problems with case as well if it’s a case sensitive. You could see if the field was String and we search for “b” then “Vince Bob” would not show up since “Vince Bob” isn’t tokenized as “Vince” and “Bob”. I wanted to be able so search for “b” using a PrefixQuery and have the following results: Lucene Index contains this: 3 names separated by commas: Let me provide an example for the problem statement: We do this by creating our own LowerCaseWhitespaceAnalyzer which extends Analyzer. Below we can analyze text like the WhitespaceAnalyzer but filter it to lower case.
This applies to the StandardAnalyzer and WhitespaceAnalyzer. When Lucene tokenizes TextField the tokens are case sensitive. The problem here is Lucene will not tokenize the String field and leave them verbatim as a single Token. The problem was that if I index a user’s name like “Lloyd Rochester” I was getting issues with the normal analyzer’s tokenization of TextField and String. I should note this is for Lucene version 8.4.0. I recently wanted to index user names as “First Last” and couldn’t find the right analyzer to do so. The system is very fast and you don't need more than. I have adapted SearchFiles to produce HTML code but the output may as well be dynamic PHP code (for example an array holding the search results).
SearchFiles -index C:\shop\system\index -high -queries Computer.
Apache lucene similar how to#
This post explains how to do it by defining our own custom Analyzer and explaining how we form the Document, index the user names and query with a PrefixQuery.įirst of all if you’re using Apache Lucene you’re my type of person! It’s an awesome project, but the documentation and examples are severely lacking. I'm using Lucene with PHP doing system calls on Java, for example: java. I wanted to use Apache Lucene to search User Names. User Name Search with Apache Lucene | Lloyd Rochester's Geek Blog Lloyd Rochester's Geek Blog Home About Navigate Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences.
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