You are correct that autocommit=false means that docs will be in the
index before the last thread releases its concurrent hold on a Writer,
*but because IndexAccessor controls* *when the IndexSearchers are
reopened*, those docs will still not be visible until the last thread
holding a Writer releases it...that is when the reopening of Searchers
occurs as well as when the Writer is closed.
- Mark
ajay_garg wrote:
Hi. Sorry if I seem a stranger in this thread, but there is something that I
can't resist clearing myself on.
Mark, you say that the additional documents added to a index, won't show up
until the # of threads accessing the index hits 0; and subsequently the
indexwriter instance is closed.
But I suppose that the autocommit=true, asserts that all flushed (Added)
documents are immediately committed ( and hence visible ) in the index, and
no explicit cclosing ( releasiing ) of the Indexwriter instance is required.
( Of course, re-opening an IndexSearcher instance is required ).
Am I being dumb ?
Looking eagerly for you to shed some light on my doubt.
Thanks
Ajay Garg
codetester wrote:
Hi All,
A newbie out here.... I am using lucene 2.3.0. I need to use lucene to
perform live searching and indexing. To achieve that, I tried the
following
FSDirectory directory = FSDirectory.getDirectory(location);
IndexReader reader = IndexReader.open(directory );
IndexWriter writer = new IndexWriter(directory , new SimpleAnalyzer(),
true); // <- I want to recreate the index every time
IndexSearcher searcher = new IndexSearcher( reader );
For Searching, I have the following code
QueryParser queryParser = new QueryParser("xyz", new StandardAnalyzer());
Hits hits = searcher .search(queryParser.parse(displayName + "*"));
And for adding records, I have the following code
// Create doc object
writer.addDocument(doc);
IndexReader newIndexReader = reader.reopen() ;
if ( newIndexReader != reader ) {
reader.close() ;
}
reader = newIndexReader ;
searcher.close() ;
searcher = new IndexSearcher(reader );
So the issues that I face are
1) The addition of new record is not reflected in the search ( even though
I have reinited IndexSearcher )
2) Obviously, the add record code is not thread safe. I am trying to close
and update the reference to IndexSearcher object. I could add a sync
block, but the bigger question would be that what is the ideal way to
achieve this case where I need to add and search record real-time ?
Thanks !
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