Lucene: Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search Solr: Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, … Read more
IndexReader reader = // create IndexReader for (int i=0; i<reader.maxDoc(); i++) { if (reader.isDeleted(i)) continue; Document doc = reader.document(i); String docId = doc.get(“docId”); // do something with docId here… }
Yes, I’ve used it for exactly what you are describing. We had two services – one for read, and one for write, but only because we had multiple readers. I’m sure we could have done it with just one service (the writer) and embedded the reader in the web app and services. I’ve used lucene.net … Read more