Arpit,
It looks like you've omitted the import statements
from
Indexer.java. The book omits import statements to
conserve space,
but they are important. The code is provided in its
entirety at
http://www.lucenebook.com
In fact, you could build an index by running the
code directly (read
the README file and follow the instructions first)
by typing "ant
Indexer" and following the prompts. One of the
prompts asks you
where to put the index itself, and the next prompt
asks for the
directory of text files to index.
Erik
On Sep 19, 2005, at 10:34 PM, Arpit Sharma wrote:
I have put the .jar file in C:\lucene and I have
also
unzip it and have also put all the
directories(like
analysis,index,store) in C:\ lucene.
Now how to create a index ?
all the text files are in C:\text directory. I
have
"lucene in action" book and with the help of it I
made
a Indexer.java program in C:\lucene and when I
tried
to compile it it is giving lot's of errors.
The code is fine(it is copy paste from the book).
I am sure that there is some path problem. What
should
I do ?
Thanks
Here is the code of the Indexer.java:-
----------------
/** * This code was originally written for
** Erik's Lucene intro java.net article */
public class Indexer {
public static void main(String[] args) throws
Exception {
if (args.length != 2) {
throw new Exception("Usage: java " +
Indexer.class.getName()
+ " <index dir> <data dir>");
}
File indexDir = new File(args[0]);
File dataDir = new File(args[1]);
long start = new Date().getTime();
int numIndexed = index(indexDir, dataDir);
long end = new Date().getTime();
System.out.println("Indexing " + numIndexed
+ "
files took "
+ (end - start) + " milliseconds");
}
// open an index and start file directory
traversal
public static int index(File indexDir, File
dataDir)
throws IOException {
if (!dataDir.exists() ||
!dataDir.isDirectory()) {
throw new IOException(dataDir
+ " does not exist or is not a
directory");
}
IndexWriter writer = new
IndexWriter(indexDir,
new StandardAnalyzer(), true);
writer.setUseCompoundFile(false);
indexDirectory(writer, dataDir);
int numIndexed = writer.docCount();
writer.optimize();
writer.close();
return numIndexed;
}
// recursive method that calls itself when it
finds
a directory
private static void
indexDirectory(IndexWriter
writer, File dir)
throws IOException {
File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
File f = files[i];
if (f.isDirectory()) {
indexDirectory(writer, f);
} else if
(f.getName().endsWith(".txt")) {
indexFile(writer, f);
}
}
}
// method to actually index a file using
Lucene
private static void indexFile(IndexWriter
writer,
File f)
throws IOException {
if (f.isHidden() || !f.exists() ||
!f.canRead())
{
return;
}
System.out.println("Indexing " +
f.getCanonicalPath());
Document doc = new Document();
doc.add(Field.Text("contents", new
FileReader(f)));
doc.add(Field.Keyword("filename",
f.getCanonicalPath()));
writer.addDocument(doc);
}
}
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