newbie question again

[Timon Roth]

hello list

sory, this is maeby a stupid questin, but i can't resolve. so maeby you can 
help me:

i try to compile the indexer-example from the book lucene in action, 2nd 
edition (http://www.manning.com/hatcher3/hatcher_meapch1.pdf), but get the 
following error:
----------------------------------------------------------------------
javac -Xlint -cp ":.:./lucene/lucene-core-2.4.1.jar" Indexer.java
Indexer.java:37: cannot find symbol
symbol  : constructor FSDirectory(java.io.File,<nulltype>)
location: class org.apache.lucene.store.FSDirectory
        Directory dir = new FSDirectory(new File(indexDir), null);
                        ^
1 error
----------------------------------------------------------------------

it means the following codesgement:

public Indexer(String indexDir) throws IOException {
    Directory dir = new FSDirectory(new File(indexDir));
    writer = new IndexWriter(dir, new StandardAnalyzer(), true, 
IndexWriter.maxFieldLength.UNLIMITED);
    }


im using debian testing with..
java -version
java version "1.6.0_0"
OpenJDK  Runtime Environment (build 1.6.0_0-b11)
OpenJDK Server VM (build 1.6.0_0-b11, mixed mode)

sourcecode+makefile are attached:

thanks for your help,
timon

import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.Directory;

import java.io.File;
import java.io.IOException;
import java.io.FileReader;

public class Indexer {

private IndexWriter writer;

public static void main(String[] args) throws Exception {
	if (args.length != 2) {
		throw new Exception("Usage: java " + Indexer.class.getName() + " <index dir> <data dir>");
		}

	String indexDir = args[0];
	String dataDir = args[1];

	long start = System.currentTimeMillis();
	Indexer indexer = new Indexer(indexDir);
	int numIndexed = indexer.index(dataDir);
	indexer.close();
	long end = System.currentTimeMillis();

	System.out.println("Indexing " + numIndexed + " files took " + (end - start) + " milliseconds");
	}



public Indexer(String indexDir) throws IOException {
	
	Directory dir = new FSDirectory(new File(indexDir), null);
	writer = new IndexWriter(dir, new StandardAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
	}

public void close() throws IOException {
	writer.close();
	}

public int index(String dataDir) throws Exception {
	
	File[] files = new File(dataDir).listFiles();

	for (int i = 0; i < files.length; i++) {
		
		File f = files[i];
		if (!f.isDirectory() && !f.isHidden() && f.exists() && f.canRead() && acceptFile(f)) {
			indexFile(f);
			}
		}
	return writer.numDocs();
	}


protected boolean acceptFile(File f) {
	return f.getName().endsWith(".txt");
	}


protected Document getDocument(File f) throws Exception {
	Document doc = new Document();
	doc.add(new Field("contents", new FileReader(f)));
	doc.add(new Field("filename", f.getCanonicalPath(),
	Field.Store.YES, Field.Index.NOT_ANALYZED));
	return doc;
	}


private void indexFile(File f) throws Exception {
	System.out.println("Indexing " + f.getCanonicalPath());
	Document doc = getDocument(f);
	if (doc != null) {
		writer.addDocument(doc);
		}
	}
}

LANG='de_CH';
CP="$(CLASSPATH):.:./lucene/lucene-core-2.4.1.jar"

all:
	javac -Xlint -cp $(CP) Indexer.java


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