RE: IndexSearcher hanging on to old index files in Windows

[Monsur Hossain]

Ok, I've written up a Java test with Lucene 1.4.3, the code is pasted below.
The code creates a new index, creates an IndexSearcher object, and then does
an incremental index/optimize.  The IndexSearcher line is commented out.
When I run this code, I end up with a single "segments", "deletable" and
".cfs" file in my Index directory.

Now, when I uncomment the IndexSearcher line and run the application again,
I end up with two .cfs files.  Notice how all I have to do is create an
IndexSearcher; I don't even have to run a query.  

Am I doing this correctly?

Thanks,
Monsur


import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;


public class SearchTest {
    
    static String indexDir = "C:\\Temp\\Index"; 
    static int numDocsAdd = 1000;
    static int mergeFactor = 2;
    static int docId = 0;

    public static void main(String[] args) throws Exception {
        System.out.println("Running full index");
        initialIndex();
//        IndexSearcher isearcher = new IndexSearcher(indexDir);
        System.out.println("Running incremental index");
        incrementalIndex();
    }
    
    static void initialIndex() throws Exception {
        // create a new index with 1000 documents
        IndexWriter writerMain = new IndexWriter(indexDir, new
SimpleAnalyzer(), true);
        writerMain.mergeFactor = mergeFactor;
        for (docId = 0; docId < numDocsAdd; docId++)
        {
            Document doc = new Document();
            doc.add(Field.Text("Content", "This is for document number " +
docId));
            doc.add(Field.Keyword("DocID", Integer.toString(docId)));
            writerMain.addDocument(doc);
        }
        writerMain.optimize();
        writerMain.close();
    }
    
    static void incrementalIndex() throws Exception {
        // add 1000 new documents to the index
        IndexWriter writerMain = new IndexWriter(indexDir, new
SimpleAnalyzer(), false);
        writerMain.mergeFactor = mergeFactor;
        int docMax = docId + numDocsAdd;
        for (; docId < docMax; docId++)
        {
            Document doc = new Document();
            doc.add(Field.Text("Content", "This is for document number " +
docId));
            doc.add(Field.Keyword("DocID", Integer.toString(docId)));
            writerMain.addDocument(doc);
        }
        writerMain.optimize();
        writerMain.close();
    }
}



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