FAQ
I am new to lucene, and have problem in executing it's first program which is
Indexer.java

here is the source code..

*****************************************************

import java.io.*;
import org.apache.lucene.document.*;
import org.apache.lucene.index.*;
import org.apache.lucene.analysis.*;
import org.apache.lucene.analysis.standard.*;
import java.util.*;
import java.io.IOException;

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);
}
}


**********************************************************

and the errors which i am getting are

C:\Documents and Settings\Sumit\Desktop\db>javac Indexer.java
Indexer.java:60: cannot find symbol
symbol : method Text(java.lang.String,java.io.FileReader)
location: class org.apache.lucene.document.Field
doc.add(Field.Text("contents", new FileReader(f)));
^
Indexer.java:61: cannot find symbol
symbol : method Keyword(java.lang.String,java.lang.String)
location: class org.apache.lucene.document.Field
doc.add(Field.Keyword("filename", f.getCanonicalPath()));
^
2 errors





any suggestions ..please
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  • Stephane Nicoll at Feb 24, 2008 at 8:42 am
    Field.Text has been deprecated and removed a while back. You probably
    found an old code sample on the Internet that is not applicable
    anymore to 2.3

    Just create your Fields wiht the constructor: new Field("....")

    See the Javadoc for details.

    HTH,
    Stéphane
    On Sun, Feb 24, 2008 at 6:41 AM, sumittyagi wrote:

    I am new to lucene, and have problem in executing it's first program which is
    Indexer.java

    here is the source code..

    *****************************************************

    import java.io.*;
    import org.apache.lucene.document.*;
    import org.apache.lucene.index.*;
    import org.apache.lucene.analysis.*;
    import org.apache.lucene.analysis.standard.*;
    import java.util.*;
    import java.io.IOException;

    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);
    }
    }


    **********************************************************

    and the errors which i am getting are

    C:\Documents and Settings\Sumit\Desktop\db>javac Indexer.java
    Indexer.java:60: cannot find symbol
    symbol : method Text(java.lang.String,java.io.FileReader)
    location: class org.apache.lucene.document.Field
    doc.add(Field.Text("contents", new FileReader(f)));
    ^
    Indexer.java:61: cannot find symbol
    symbol : method Keyword(java.lang.String,java.lang.String)
    location: class org.apache.lucene.document.Field
    doc.add(Field.Keyword("filename", f.getCanonicalPath()));
    ^
    2 errors





    any suggestions ..please
    --
    View this message in context: http://www.nabble.com/HELP...compiling-first-program-for-lucene--Indexer.java-tp15661169p15661169.html
    Sent from the Lucene - Java Users mailing list archive at Nabble.com.


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    --
    Large Systems Suck: This rule is 100% transitive. If you build one,
    you suck" -- S.Yegge

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  • Sumittyagi at Feb 25, 2008 at 4:49 am
    hi,
    Thanks for replying..
    Can you please explain more clearly that what exactly needs to be done in
    this program.
    Thanks

    Stephane Nicoll-2 wrote:
    Field.Text has been deprecated and removed a while back. You probably
    found an old code sample on the Internet that is not applicable
    anymore to 2.3

    Just create your Fields wiht the constructor: new Field("....")

    See the Javadoc for details.

    HTH,
    Stéphane
    On Sun, Feb 24, 2008 at 6:41 AM, sumittyagi wrote:

    I am new to lucene, and have problem in executing it's first program
    which is
    Indexer.java

    here is the source code..

    *****************************************************

    import java.io.*;
    import org.apache.lucene.document.*;
    import org.apache.lucene.index.*;
    import org.apache.lucene.analysis.*;
    import org.apache.lucene.analysis.standard.*;
    import java.util.*;
    import java.io.IOException;

    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);
    }
    }


    **********************************************************

    and the errors which i am getting are

    C:\Documents and Settings\Sumit\Desktop\db>javac Indexer.java
    Indexer.java:60: cannot find symbol
    symbol : method Text(java.lang.String,java.io.FileReader)
    location: class org.apache.lucene.document.Field
    doc.add(Field.Text("contents", new FileReader(f)));
    ^
    Indexer.java:61: cannot find symbol
    symbol : method Keyword(java.lang.String,java.lang.String)
    location: class org.apache.lucene.document.Field
    doc.add(Field.Keyword("filename", f.getCanonicalPath()));
    ^
    2 errors





    any suggestions ..please
    --
    View this message in context:
    http://www.nabble.com/HELP...compiling-first-program-for-lucene--Indexer.java-tp15661169p15661169.html
    Sent from the Lucene - Java Users mailing list archive at Nabble.com.


    ---------------------------------------------------------------------
    To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
    For additional commands, e-mail: java-user-help@lucene.apache.org


    --
    Large Systems Suck: This rule is 100% transitive. If you build one,
    you suck" -- S.Yegge

    ---------------------------------------------------------------------
    To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
    For additional commands, e-mail: java-user-help@lucene.apache.org

    --
    View this message in context: http://www.nabble.com/Re%3A-HELP...compiling-first-program-for-lucene-Indexer.java-tp15661969p15673994.html
    Sent from the Lucene - Java Users mailing list archive at Nabble.com.


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groupjava-user @
categorieslucene
postedFeb 24, '08 at 5:42a
activeFeb 25, '08 at 4:49a
posts3
users2
websitelucene.apache.org

2 users in discussion

Sumittyagi: 2 posts Stephane Nicoll: 1 post

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