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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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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