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Cassandra implementation of Lucene Directory.
By Thanh Ba Nguyen (btnguyen2k (at) gmail.com)
Project home: https://github.com/DDTH/cassdir
- Store Lucene's index in Cassandra.
- Performance enhancement with caching support.
- Support fine-tuning Cassandra consistency level per operation (read/write file data, lock, remove file, etc).
Latest release version: 0.1.1. See RELEASE-NOTES.md.
Maven dependency:
<dependency>
<groupId>com.github.ddth</groupId>
<artifactId>cassdir</artifactId>
<version>0.1.1</version>
</dependency>- ddth-cache-adapter: for caching support.
- ddth-redis: to use Redis as cache backend.
- ddth-cql-utils: library to interact with Cassandra via CQL.
- Datastax Java Driver for Cassandra: Java driver to access Cassandra cluster.
Cassandra column family schema (as CQL): see dbschema/cassdir.cql.
Create a CassandraDirectory instance:
String cassHostsAndPorts = "localhost:9042,host2:port2,host3:port3";
CassandraDirectory DIR = new CassandraDirectory(cassHostsAndPorts, cassUser, cassPassword, cassKeySpace);
DIR.init();Index documents with IndexWriter:
Analyzer analyzer = new StandardAnalyzer();
IndexWriterConfig iwc = new IndexWriterConfig(analyzer);
iwc.setOpenMode(OpenMode.CREATE_OR_APPEND);
IndexWriter iw = new IndexWriter(DIR, iwc);
// add/update documents
// ...
iw.commit();
iw.close();Or, search documents with IndexSearcher:
IndexReader ir = DirectoryReader.open(DIR);
IndexSearcher is = new IndexSearcher(ir);
// search documents
// ...
ir.close();Call CassandraDirectory.destroy() when done.
Examples: see src/test/java.
See LICENSE.txt for details. Copyright (c) 2015 Thanh Ba Nguyen.
Third party libraries are distributed under their own license(s).