Re: XML Indexing
Check this article out. http://www-106.ibm.com/developerworks/library/j-lucene/ Simon - Original Message - From: Sumathi [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, October 05, 2004 2:02 PM Subject: XML Indexing Can any one give me a demo for indexing XML files ? Mit freundlichen Grüssen - with kind regards _ Sumathi P Junior Consultant QA GFT Technologies , India 95 , Bharathidasan Salai Cantonment , Trichy-620001 TamilNadu , India T +91-431-2418 398 F +91-431-2418 698 [EMAIL PROTECTED] www.gft.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Lucene Search Applet
Hi Jon,
Where do I go to get the attached files?
Many Thanks
Simon
- Original Message -
From: Jon Schuster [EMAIL PROTECTED]
To: 'Lucene Users List' [EMAIL PROTECTED]
Sent: Monday, August 23, 2004 6:25 PM
Subject: RE: Lucene Search Applet
Hi all,
The changes I made to get past the System.getProperty issues are
essentially
the same in the three files org.apache.lucene.index.IndexWriter,
org.apache.lucene.store.FSDirectory, and
org.apache.lucene.search.BooleanQuery.
Change the static initializations from a form like this:
public static long WRITE_LOCK_TIMEOUT =
Integer.parseInt(System.getProperty(org.apache.lucene.writeLockTimeout,
1000));
to a separate declaration and static initializer block like this:
public static long WRITE_LOCK_TIMEOUT;
static
{
try
{
WRITE_LOCK_TIMEOUT =
Integer.parseInt(System.getProperty(org.apache.lucene.writeLockTimeout,
1000));
}
catch ( Exception e )
{
WRITE_LOCK_TIMEOUT = 1000;
}
};
As before, the variables are initialized when the class is loaded, but if
the System.getProperty fails, the variable still gets initialized to its
default value in the catch block.
You can use a separate static block for each variable, or put them all
into
a single static block. You could also add a setter for each variable if
you
want the ability to set the value separately from the class init.
In the FSDirectory class, the variables DISABLE_LOCKS and LOCK_DIR are
marked final, which I had to remove to do the initialization as described.
I've also attached the three modified files if you want to just copy and
paste.
--Jon
-Original Message-
From: Simon mcIlwaine [mailto:[EMAIL PROTECTED]
Sent: Monday, August 23, 2004 7:37 AM
To: Lucene Users List
Subject: Re: Lucene Search Applet
Hi,
Just used the RODirectory and I'm now getting the following error:
java.security.AccessControlException: access denied
(java.util.PropertyPermission user.dir read) I'm reckoning that this is
what
Jon was on about with System.getProperty() within certain files because im
using an applet. Is this correct and if so can someone show me one of the
hacked files so that I know what I need to modify.
Many Thanks
Simon
.
- Original Message -
From: Simon mcIlwaine [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Monday, August 23, 2004 3:12 PM
Subject: Re: Lucene Search Applet
Hi Stephane,
A bit of a stupid question but how do you mean set the system property
disableLuceneLocks=true? Can I do it from a call from FSDirectory API or
do
I have to actually hack the code? Also if I do use RODirectory how do I
go
about using it? Do I have to update the Lucene JAR archive file with
RODirectory class included as I tried using it and its not recognising
the
class?
Many Thanks
Simon
- Original Message -
From: Stephane James Vaucher [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Monday, August 23, 2004 2:22 PM
Subject: Re: Lucene Search Applet
Hi Simon,
Does this work? From FSDirectory api:
If the system property 'disableLuceneLocks' has the String value of
true, lock creation will be disabled.
Otherwise, I think there was a Read-Only Directory hack:
http://www.mail-archive.com/[EMAIL PROTECTED]/msg05148.html
HTH,
sv
On Mon, 23 Aug 2004, Simon mcIlwaine wrote:
Thanks Jon that works by putting the jar file in the archive
attribute.
Now
im getting the disablelock error cause of the unsigned applet. Do I
just
comment out the code anywhere where System.getProperty() appears in
the
files that you specified and then update the JAR Archive?? Is it
possible
you could show me one of the hacked files so that I know what I'm
modifying?
Does anyone else know if there is another way of doing this without
having
to hack the source code?
Many thanks.
Simon
- Original Message -
From: Jon Schuster [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Saturday, August 21, 2004 2:08 AM
Subject: Re: Lucene Search Applet
I have Lucene working in an applet and I've seen this problem only
when
the jar file really was not available (typo in the jar name),
which
is
what you'd expect. It's possible that the classpath for your
application is not the same as the classpath for the applet;
perhaps
they're using different VMs or JREs from different locations.
Try referencing the Lucene jar file in the archive attribute of
the
applet tag.
Also, to get Lucene to work from an unsigned applet, I had to
modify
a
few classes that call System.getProperty(), because the properties
that
were being requested were disallowed for applets. I think the
classes
were IndexWriter, FSDirectory, and BooleanQuery.
--Jon
Re: Lucene Search Applet
Hi Jon,
I modified the three files exactly the way you said using separate
declaration and static initializer block but for IndexWriter I had to change
4 of the variables because they were final. Then I updated the Lucene JAR
file with the three files in the appropriate directory. But i'm still
getting the error: java.security.AccessControlException: access denied
(java.util.PropertyPermission user.dir read)?? What am I doing wrong? The
last mail you sent I was unable to download the files you attached. Is it
possible you could send them to my work address: [EMAIL PROTECTED]
Many Thanks
Simon
- Original Message -
From: Jon Schuster [EMAIL PROTECTED]
To: 'Lucene Users List' [EMAIL PROTECTED]
Sent: Monday, August 23, 2004 6:25 PM
Subject: RE: Lucene Search Applet
Hi all,
The changes I made to get past the System.getProperty issues are
essentially
the same in the three files org.apache.lucene.index.IndexWriter,
org.apache.lucene.store.FSDirectory, and
org.apache.lucene.search.BooleanQuery.
Change the static initializations from a form like this:
public static long WRITE_LOCK_TIMEOUT =
Integer.parseInt(System.getProperty(org.apache.lucene.writeLockTimeout,
1000));
to a separate declaration and static initializer block like this:
public static long WRITE_LOCK_TIMEOUT;
static
{
try
{
WRITE_LOCK_TIMEOUT =
Integer.parseInt(System.getProperty(org.apache.lucene.writeLockTimeout,
1000));
}
catch ( Exception e )
{
WRITE_LOCK_TIMEOUT = 1000;
}
};
As before, the variables are initialized when the class is loaded, but if
the System.getProperty fails, the variable still gets initialized to its
default value in the catch block.
You can use a separate static block for each variable, or put them all
into
a single static block. You could also add a setter for each variable if
you
want the ability to set the value separately from the class init.
In the FSDirectory class, the variables DISABLE_LOCKS and LOCK_DIR are
marked final, which I had to remove to do the initialization as described.
I've also attached the three modified files if you want to just copy and
paste.
--Jon
-Original Message-
From: Simon mcIlwaine [mailto:[EMAIL PROTECTED]
Sent: Monday, August 23, 2004 7:37 AM
To: Lucene Users List
Subject: Re: Lucene Search Applet
Hi,
Just used the RODirectory and I'm now getting the following error:
java.security.AccessControlException: access denied
(java.util.PropertyPermission user.dir read) I'm reckoning that this is
what
Jon was on about with System.getProperty() within certain files because im
using an applet. Is this correct and if so can someone show me one of the
hacked files so that I know what I need to modify.
Many Thanks
Simon
.
- Original Message -
From: Simon mcIlwaine [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Monday, August 23, 2004 3:12 PM
Subject: Re: Lucene Search Applet
Hi Stephane,
A bit of a stupid question but how do you mean set the system property
disableLuceneLocks=true? Can I do it from a call from FSDirectory API or
do
I have to actually hack the code? Also if I do use RODirectory how do I
go
about using it? Do I have to update the Lucene JAR archive file with
RODirectory class included as I tried using it and its not recognising
the
class?
Many Thanks
Simon
- Original Message -
From: Stephane James Vaucher [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Monday, August 23, 2004 2:22 PM
Subject: Re: Lucene Search Applet
Hi Simon,
Does this work? From FSDirectory api:
If the system property 'disableLuceneLocks' has the String value of
true, lock creation will be disabled.
Otherwise, I think there was a Read-Only Directory hack:
http://www.mail-archive.com/[EMAIL PROTECTED]/msg05148.html
HTH,
sv
On Mon, 23 Aug 2004, Simon mcIlwaine wrote:
Thanks Jon that works by putting the jar file in the archive
attribute.
Now
im getting the disablelock error cause of the unsigned applet. Do I
just
comment out the code anywhere where System.getProperty() appears in
the
files that you specified and then update the JAR Archive?? Is it
possible
you could show me one of the hacked files so that I know what I'm
modifying?
Does anyone else know if there is another way of doing this without
having
to hack the source code?
Many thanks.
Simon
- Original Message -
From: Jon Schuster [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Saturday, August 21, 2004 2:08 AM
Subject: Re: Lucene Search Applet
I have Lucene working in an applet and I've seen this problem only
when
the jar file really was not available (typo in the jar name),
which
is
what you'd expect. It's possible that the classpath for your
application
Re: Lucene Search Applet
Thanks Jon that works by putting the jar file in the archive attribute. Now
im getting the disablelock error cause of the unsigned applet. Do I just
comment out the code anywhere where System.getProperty() appears in the
files that you specified and then update the JAR Archive?? Is it possible
you could show me one of the hacked files so that I know what I'm modifying?
Does anyone else know if there is another way of doing this without having
to hack the source code?
Many thanks.
Simon
- Original Message -
From: Jon Schuster [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Saturday, August 21, 2004 2:08 AM
Subject: Re: Lucene Search Applet
I have Lucene working in an applet and I've seen this problem only when
the jar file really was not available (typo in the jar name), which is
what you'd expect. It's possible that the classpath for your
application is not the same as the classpath for the applet; perhaps
they're using different VMs or JREs from different locations.
Try referencing the Lucene jar file in the archive attribute of the
applet tag.
Also, to get Lucene to work from an unsigned applet, I had to modify a
few classes that call System.getProperty(), because the properties that
were being requested were disallowed for applets. I think the classes
were IndexWriter, FSDirectory, and BooleanQuery.
--Jon
On Aug 20, 2004, at 6:57 AM, Simon mcIlwaine wrote:
Im a new Lucene User and I'm not too familiar with Applets either but
I've
been doing a bit of testing on java applet security and if im correct
in
saying that applets can read anything below there codebase then my
problem
is not a security restriction one. The error is reading
java.lang.NoClassDefFoundError and the classpath is set as I have it
working
in a Swing App. Does someone actually have Lucene working in an
Applet? Can
it be done?? Please help.
Thanks
Simon
- Original Message -
From: Terry Steichen [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Wednesday, August 18, 2004 4:17 PM
Subject: Re: Lucene Search Applet
I suspect it has to do with the security restrictions of the applet,
'cause
it doesn't appear to be finding your Lucene jar file. Also, regarding
the
lock files, I believe you can disable the locking stuff just for
purposes
like yours (read-only index).
Regards,
Terry
- Original Message -
From: Simon mcIlwaine
To: Lucene Users List
Sent: Wednesday, August 18, 2004 11:03 AM
Subject: Lucene Search Applet
Im developing a Lucene CD-ROM based search which will search html
pages on
CD-ROM, using an applet as the UI. I know that theres a problem with
lock
files and also security restrictions on applets so I am using the
RAMDirectory. I have it working in a Swing application however when I
put it
into an applet its giving me problems. It compiles but when I go to
run the
applet I get the error below. Can anyone help? Thanks in advance.
Simon
Error:
Java.lang.noClassDefFoundError: org/apache/lucene/store/Directory
At: Java.lang.Class.getDeclaredConstructors0(Native Method)
At: Java.lang.Class.privateGetDeclaredConstructors(Class.java:1610)
At: Java.lang.Class.getConstructor0(Class.java:1922)
At: Java.lang.Class.newInstance0(Class.java:278)
At: Java.lang.Class.newInstance(Class.java:261)
At: sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
At: sun.applet.AppletPanel.runloader(AppletPanel.java:546)
At: sun.applet.AppletPanel.run(AppletPanel.java:298)
At: java.lang.Thread.run(Thread.java:534)
Code:
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.Hits;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class MemorialApp2 extends JApplet implements ActionListener{
JLabel prompt;
JTextField input;
JButton search;
JPanel panel;
String indexDir = C:/Java/lucene/index-list;
private static RAMDirectory idx;
public void init(){
Container cp = getContentPane();
panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.CENTER, 4, 4));
prompt = new JLabel(Keyword search:);
input = new JTextField(,20);
search = new JButton(Search);
search.addActionListener(this);
panel.add(prompt);
panel.add(input);
panel.add(search);
cp.add(panel);
}
public void actionPerformed(ActionEvent e){
if (e.getSource() == search){
String surname = (input.getText());
try {
findSurname(indexDir, surname
Re: Lucene Search Applet
Hi Stephane, A bit of a stupid question but how do you mean set the system property disableLuceneLocks=true? Can I do it from a call from FSDirectory API or do I have to actually hack the code? Also if I do use RODirectory how do I go about using it? Do I have to update the Lucene JAR archive file with RODirectory class included as I tried using it and its not recognising the class? Many Thanks Simon - Original Message - From: Stephane James Vaucher [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Monday, August 23, 2004 2:22 PM Subject: Re: Lucene Search Applet Hi Simon, Does this work? From FSDirectory api: If the system property 'disableLuceneLocks' has the String value of true, lock creation will be disabled. Otherwise, I think there was a Read-Only Directory hack: http://www.mail-archive.com/[EMAIL PROTECTED]/msg05148.html HTH, sv On Mon, 23 Aug 2004, Simon mcIlwaine wrote: Thanks Jon that works by putting the jar file in the archive attribute. Now im getting the disablelock error cause of the unsigned applet. Do I just comment out the code anywhere where System.getProperty() appears in the files that you specified and then update the JAR Archive?? Is it possible you could show me one of the hacked files so that I know what I'm modifying? Does anyone else know if there is another way of doing this without having to hack the source code? Many thanks. Simon - Original Message - From: Jon Schuster [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Saturday, August 21, 2004 2:08 AM Subject: Re: Lucene Search Applet I have Lucene working in an applet and I've seen this problem only when the jar file really was not available (typo in the jar name), which is what you'd expect. It's possible that the classpath for your application is not the same as the classpath for the applet; perhaps they're using different VMs or JREs from different locations. Try referencing the Lucene jar file in the archive attribute of the applet tag. Also, to get Lucene to work from an unsigned applet, I had to modify a few classes that call System.getProperty(), because the properties that were being requested were disallowed for applets. I think the classes were IndexWriter, FSDirectory, and BooleanQuery. --Jon On Aug 20, 2004, at 6:57 AM, Simon mcIlwaine wrote: Im a new Lucene User and I'm not too familiar with Applets either but I've been doing a bit of testing on java applet security and if im correct in saying that applets can read anything below there codebase then my problem is not a security restriction one. The error is reading java.lang.NoClassDefFoundError and the classpath is set as I have it working in a Swing App. Does someone actually have Lucene working in an Applet? Can it be done?? Please help. Thanks Simon - Original Message - From: Terry Steichen [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Wednesday, August 18, 2004 4:17 PM Subject: Re: Lucene Search Applet I suspect it has to do with the security restrictions of the applet, 'cause it doesn't appear to be finding your Lucene jar file. Also, regarding the lock files, I believe you can disable the locking stuff just for purposes like yours (read-only index). Regards, Terry - Original Message - From: Simon mcIlwaine To: Lucene Users List Sent: Wednesday, August 18, 2004 11:03 AM Subject: Lucene Search Applet Im developing a Lucene CD-ROM based search which will search html pages on CD-ROM, using an applet as the UI. I know that theres a problem with lock files and also security restrictions on applets so I am using the RAMDirectory. I have it working in a Swing application however when I put it into an applet its giving me problems. It compiles but when I go to run the applet I get the error below. Can anyone help? Thanks in advance. Simon Error: Java.lang.noClassDefFoundError: org/apache/lucene/store/Directory At: Java.lang.Class.getDeclaredConstructors0(Native Method) At: Java.lang.Class.privateGetDeclaredConstructors(Class.java:1610) At: Java.lang.Class.getConstructor0(Class.java:1922) At: Java.lang.Class.newInstance0(Class.java:278) At: Java.lang.Class.newInstance(Class.java:261) At: sun.applet.AppletPanel.createApplet(AppletPanel.java:617) At: sun.applet.AppletPanel.runloader(AppletPanel.java:546) At: sun.applet.AppletPanel.run(AppletPanel.java:298) At: java.lang.Thread.run(Thread.java:534) Code: import org.apache.lucene.search.IndexSearcher; import org.apache.lucene.search.Query; import
Re: Lucene Search Applet
Hi, Just used the RODirectory and I'm now getting the following error: java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read) I'm reckoning that this is what Jon was on about with System.getProperty() within certain files because im using an applet. Is this correct and if so can someone show me one of the hacked files so that I know what I need to modify. Many Thanks Simon . - Original Message - From: Simon mcIlwaine [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Monday, August 23, 2004 3:12 PM Subject: Re: Lucene Search Applet Hi Stephane, A bit of a stupid question but how do you mean set the system property disableLuceneLocks=true? Can I do it from a call from FSDirectory API or do I have to actually hack the code? Also if I do use RODirectory how do I go about using it? Do I have to update the Lucene JAR archive file with RODirectory class included as I tried using it and its not recognising the class? Many Thanks Simon - Original Message - From: Stephane James Vaucher [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Monday, August 23, 2004 2:22 PM Subject: Re: Lucene Search Applet Hi Simon, Does this work? From FSDirectory api: If the system property 'disableLuceneLocks' has the String value of true, lock creation will be disabled. Otherwise, I think there was a Read-Only Directory hack: http://www.mail-archive.com/[EMAIL PROTECTED]/msg05148.html HTH, sv On Mon, 23 Aug 2004, Simon mcIlwaine wrote: Thanks Jon that works by putting the jar file in the archive attribute. Now im getting the disablelock error cause of the unsigned applet. Do I just comment out the code anywhere where System.getProperty() appears in the files that you specified and then update the JAR Archive?? Is it possible you could show me one of the hacked files so that I know what I'm modifying? Does anyone else know if there is another way of doing this without having to hack the source code? Many thanks. Simon - Original Message - From: Jon Schuster [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Saturday, August 21, 2004 2:08 AM Subject: Re: Lucene Search Applet I have Lucene working in an applet and I've seen this problem only when the jar file really was not available (typo in the jar name), which is what you'd expect. It's possible that the classpath for your application is not the same as the classpath for the applet; perhaps they're using different VMs or JREs from different locations. Try referencing the Lucene jar file in the archive attribute of the applet tag. Also, to get Lucene to work from an unsigned applet, I had to modify a few classes that call System.getProperty(), because the properties that were being requested were disallowed for applets. I think the classes were IndexWriter, FSDirectory, and BooleanQuery. --Jon On Aug 20, 2004, at 6:57 AM, Simon mcIlwaine wrote: Im a new Lucene User and I'm not too familiar with Applets either but I've been doing a bit of testing on java applet security and if im correct in saying that applets can read anything below there codebase then my problem is not a security restriction one. The error is reading java.lang.NoClassDefFoundError and the classpath is set as I have it working in a Swing App. Does someone actually have Lucene working in an Applet? Can it be done?? Please help. Thanks Simon - Original Message - From: Terry Steichen [EMAIL PROTECTED] To: Lucene Users List [EMAIL PROTECTED] Sent: Wednesday, August 18, 2004 4:17 PM Subject: Re: Lucene Search Applet I suspect it has to do with the security restrictions of the applet, 'cause it doesn't appear to be finding your Lucene jar file. Also, regarding the lock files, I believe you can disable the locking stuff just for purposes like yours (read-only index). Regards, Terry - Original Message - From: Simon mcIlwaine To: Lucene Users List Sent: Wednesday, August 18, 2004 11:03 AM Subject: Lucene Search Applet Im developing a Lucene CD-ROM based search which will search html pages on CD-ROM, using an applet as the UI. I know that theres a problem with lock files and also security restrictions on applets so I am using the RAMDirectory. I have it working in a Swing application however when I put it into an applet its giving me problems. It compiles but when I go to run the applet I get the error below. Can anyone help? Thanks in advance. Simon Error: Java.lang.noClassDefFoundError: org/apache/lucene
Re: Lucene Search Applet
Im a new Lucene User and I'm not too familiar with Applets either but I've
been doing a bit of testing on java applet security and if im correct in
saying that applets can read anything below there codebase then my problem
is not a security restriction one. The error is reading
java.lang.NoClassDefFoundError and the classpath is set as I have it working
in a Swing App. Does someone actually have Lucene working in an Applet? Can
it be done?? Please help.
Thanks
Simon
- Original Message -
From: Terry Steichen [EMAIL PROTECTED]
To: Lucene Users List [EMAIL PROTECTED]
Sent: Wednesday, August 18, 2004 4:17 PM
Subject: Re: Lucene Search Applet
I suspect it has to do with the security restrictions of the applet, 'cause
it doesn't appear to be finding your Lucene jar file. Also, regarding the
lock files, I believe you can disable the locking stuff just for purposes
like yours (read-only index).
Regards,
Terry
- Original Message -
From: Simon mcIlwaine
To: Lucene Users List
Sent: Wednesday, August 18, 2004 11:03 AM
Subject: Lucene Search Applet
Im developing a Lucene CD-ROM based search which will search html pages on
CD-ROM, using an applet as the UI. I know that theres a problem with lock
files and also security restrictions on applets so I am using the
RAMDirectory. I have it working in a Swing application however when I put it
into an applet its giving me problems. It compiles but when I go to run the
applet I get the error below. Can anyone help? Thanks in advance.
Simon
Error:
Java.lang.noClassDefFoundError: org/apache/lucene/store/Directory
At: Java.lang.Class.getDeclaredConstructors0(Native Method)
At: Java.lang.Class.privateGetDeclaredConstructors(Class.java:1610)
At: Java.lang.Class.getConstructor0(Class.java:1922)
At: Java.lang.Class.newInstance0(Class.java:278)
At: Java.lang.Class.newInstance(Class.java:261)
At: sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
At: sun.applet.AppletPanel.runloader(AppletPanel.java:546)
At: sun.applet.AppletPanel.run(AppletPanel.java:298)
At: java.lang.Thread.run(Thread.java:534)
Code:
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.Hits;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class MemorialApp2 extends JApplet implements ActionListener{
JLabel prompt;
JTextField input;
JButton search;
JPanel panel;
String indexDir = C:/Java/lucene/index-list;
private static RAMDirectory idx;
public void init(){
Container cp = getContentPane();
panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.CENTER, 4, 4));
prompt = new JLabel(Keyword search:);
input = new JTextField(,20);
search = new JButton(Search);
search.addActionListener(this);
panel.add(prompt);
panel.add(input);
panel.add(search);
cp.add(panel);
}
public void actionPerformed(ActionEvent e){
if (e.getSource() == search){
String surname = (input.getText());
try {
findSurname(indexDir, surname);
} catch(Exception ex) {
System.err.println(ex);
}
}
}
public static void findSurname(String indexDir, String surname) throws
Exception{
idx = new RAMDirectory(indexDir);
IndexSearcher searcher = new IndexSearcher(idx);
Query query = new TermQuery(new Term(surname, surname));
Hits hits = searcher.search(query);
for (int i = 0; i hits.length(); i++) {
//Document doc = hits.doc(i);
System.out.println(Surname: + hits.doc(i).get(surname));
}
}
}
-
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For additional commands, e-mail: [EMAIL PROTECTED]
Lucene Search Applet
Im developing a Lucene CD-ROM based search which will search html pages on CD-ROM,
using an applet as the UI. I know that theres a problem with lock files and also
security restrictions on applets so I am using the RAMDirectory. I have it working in
a Swing application however when I put it into an applet its giving me problems. It
compiles but when I go to run the applet I get the error below. Can anyone help?
Thanks in advance.
Simon
Error:
Java.lang.noClassDefFoundError: org/apache/lucene/store/Directory
At: Java.lang.Class.getDeclaredConstructors0(Native Method)
At: Java.lang.Class.privateGetDeclaredConstructors(Class.java:1610)
At: Java.lang.Class.getConstructor0(Class.java:1922)
At: Java.lang.Class.newInstance0(Class.java:278)
At: Java.lang.Class.newInstance(Class.java:261)
At: sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
At: sun.applet.AppletPanel.runloader(AppletPanel.java:546)
At: sun.applet.AppletPanel.run(AppletPanel.java:298)
At: java.lang.Thread.run(Thread.java:534)
Code:
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.store.Directory;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.Hits;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
public class MemorialApp2 extends JApplet implements ActionListener{
JLabel prompt;
JTextField input;
JButton search;
JPanel panel;
String indexDir = C:/Java/lucene/index-list;
private static RAMDirectory idx;
public void init(){
Container cp = getContentPane();
panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.CENTER, 4, 4));
prompt = new JLabel(Keyword search:);
input = new JTextField(,20);
search = new JButton(Search);
search.addActionListener(this);
panel.add(prompt);
panel.add(input);
panel.add(search);
cp.add(panel);
}
public void actionPerformed(ActionEvent e){
if (e.getSource() == search){
String surname = (input.getText());
try {
findSurname(indexDir, surname);
} catch(Exception ex) {
System.err.println(ex);
}
}
}
public static void findSurname(String indexDir, String surname) throws Exception{
idx = new RAMDirectory(indexDir);
IndexSearcher searcher = new IndexSearcher(idx);
Query query = new TermQuery(new Term(surname, surname));
Hits hits = searcher.search(query);
for (int i = 0; i hits.length(); i++) {
//Document doc = hits.doc(i);
System.out.println(Surname: + hits.doc(i).get(surname));
}
}
}
