One of the way to control the number of log files rotation will be as follow:

(1) Log in to your Glassfish admin (generally http://localhost:4848)

(2) Application Servers –> Logging –> General

(3) Scroll and insert the following

com.sun.enterprise.server.logging.max_history_files

(4) Restart the glassfish

find /home/user/yourpath/ -mtime +2 -type f -exec rm -rf {} \;

Or if you want to maintain that as a scheduled cron job, here’s the example of full code that you can use:

#!/bin/sh

###############################################
## Shell script to run housekeep glassfish   ##
## delete server.log older than x days ago   ##
## Date      : 24-May-11                     ##
###############################################

##declaring variables
echo “HOUSEKEEP started…”
A_LOG_PATH=~/opt/yourpath/
PAST=2

find $A_LOG_PATH -mtime +$PAST -type f -exec rm -rf {} \;

ehco “HOUSEKEEP ends…”

If(CHARINDEX(‘$’, @name, len(@name)-1) >0)

set @name = SUBSTRING(@name, 0 , len(@name)-1)
What if I need to filter most of the regex? @#$%^&**()_+=, there’ll be alot If Else statement

Finally found a solution, create a function as below:

CREATE FUNCTION [dbo].fn_cleanchars

(@str VARCHAR(8000), @validchars VARCHAR(8000))

RETURNS VARCHAR(8000)

BEGIN
WHILE PATINDEX(‘%[^' + @validchars + ']%’,@str) > 0
SET @str=REPLACE(@str, SUBSTRING(@str ,PATINDEX(‘%[^'
+ @validchars +']%’,@str), 1) ,”)
RETURN @str
END
And from your SQL:

SELECT dbo.fn_cleanchars(‘testIng 328-8743$# yedmd’,’0-9A-Za-z ‘) as name

Those bold are the characters that are valid and should remain.

The output will be as below:

When I switched to another company, they uses Microsoft SQL Server. Having familiar with SQL Developer, I decided to use the same client tool.

To set your Oracle SQL Developer to connect to other DB, please refer to the steps below. I’ve came out with step-by-step to connect to MSSQL,  which of cos, you can always do the same for other DB connections (MySQL, Sybase,Microsoft Access).

As always, the below post will expect you to already have the prerequisite:

(1) Oracle SQL Developer installed

(2) Some knowledge on DB

Step-by-Step:

(1) Run the Oracle SQL Developer

(2) Go to Tools –> Preferences

(3) Go to Third Party JDBC Drivers. Here, Add Entry by finding the location of jtds.jar file. Click OK when done.

(4) Now, we are ready to connect to MSSQL. Go to File –>  New –> Database connection

(5) Key in the specific information, click Retrieve database. Find the DB that you want to connect and click Connect.

And you’re DONE

2008-01-08 12:59:46,625 ERROR [main] (StandardManager.java:411) – IOException while loading persisted sessions: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: org.springframework.beans.factory.support.DefaultListableBeanFactory
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: org.springframework.beans.factory.support.DefaultListableBeanFactory
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1309)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:479)
at org.springframework.transaction.interceptor.TransactionAspectSupport.readObject(TransactionAspectSupport.java:337)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:946)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1809)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1634)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1386)
at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:921)
at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:393)
at org.apache.catalina.session.StandardManager.load(StandardManager.java:320)
at org.apache.catalina.session.StandardManager.start(StandardManager.java:636)
at org.apache.catalina.core.ContainerBase.setManager(ContainerBase.java:431)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4131)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:809)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:698)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)

I checked, I already implement Serializable for objects. And after google-ing around, I found the solution is the delete the file session.ser in the catalina_home/work directory and restart Tomcat. This exception then disappear ! Now it starts up just fine.

var message=”Right Click Not Allowed!”;

function clickIE4()

{
if (event.button==2)

{
alert(message);
return false;
}
}

function clickNS4(e)

{
if (document.layers||document.getElementById&&!document.all)

{
if (e.which==2||e.which==3)

{
alert(message);
return false;
}
}
}

if (document.layers)

{
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById)

{
document.onmousedown=clickIE4;
}

document.oncontextmenu=new Function(“alert(message);return false”)

</script>

java.util.Date regTime = transactionInfo.getRecDate();

java.sql.Date sqlRegTime = new java.sql.Date(regTime.getTime());

insertRecordPs.setDate(pIndex++, sqlRegTime);

Have always fear of doing reports… well, not till I notice there are open-source reporting tools offered in the market.

Been generating reports using iReport and JasperReport, and I would say, things are becoming easier, and faster when developing a system or application to generate reports.

Taken from the official site of iReport, it says that iReport is a powerful, intuitive and easy to use visual report builder/designer for JasperReports written in 100% pure java. This tool allows users to visually edit complex reports with charts, images, and subreports. iReport is integrated with leading open source chart libraries for java.

To start using iReport, you can always download for free at iReport site

After unzip, the folder, double click on the bat file and iReport is ready to run.

the iReport gui

Here, I’m going to show how to create a report using active connection. Assumption is you have a db installed on your local pc. For this, I have postgres installed in mine.

Before we get any further, after you have the iReport, you need to set the classpath.

options => classpath

a classpath box appeared

Add JAR => search for the jar file and add it

there i have configured my classpath

Now that you are done with the classpath, you can start creating connection by this:

Data => Connections/Data Sources

add new connection

To the next step, will be start creating report template.

File => Report wizards

Write a select SQL.

write sql

Click next, and add the fields columns to be displayed in your report.

select columns

Save it, and now you’re ready to run iReport with an active connection.

Build => Execute

There you have. Isn’t it simple?

import org.apache.log4j.Logger;

import com.gd.presenter.web.object.*;
import com.gd.presenter.web.cache.*;

import com.gd.presenter.web.client.common.*;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class StreamAction extends Action
{
private static Logger logger = Logger.getLogger(StreamAction.class.getName());

public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception
{
String browserType = (String)request.getAttribute(“browserType”);
String forwardMapping = “success_” + browserType;

ServletOutputStream stream = null;
BufferedInputStream buf = null;
try
{
stream = response.getOutputStream();
File mp3 = new File(“C:\\a.mp3″);
response.setContentType(“audio/mpeg”);
response.setHeader(“Content-Disposition”,”attachment; filename=Template.mp3″);
FileInputStream input = new FileInputStream(mp3);
buf = new BufferedInputStream(input);
int readBytes = 0;
//read from the file; write to the ServletOutputStream
while ((readBytes = buf.read()) != -1)
stream.write(readBytes);
}
catch(Exception e)
{
logger.info(“eerror = ” , e);
}
finally
{
if (stream != null)
stream.close();
if (buf != null)
buf.close();

}

logger.info(“action forward to [" + forwardMapping + "]“);
return mapping.findForward(forwardMapping);
}

}

criteria.add(Restrictions.eq(“departmentId”,new Long(departmentId)));