A simple dataSet file looks like this:

<!DOCTYPE dataset SYSTEM "dataset.dtd">
<dataset>
  <table name="bankaccount">
    <column>pkey</column>
    <column>accountNumber</column>
    <column>balance</column>
    <column>bankCode</column>
    <column>dateRegistered</column>
    <column>statusKey</column>

    <row>
      <value>1</value>
      <value>1</value>
      <value>1000</value>
      <value>300</value>
      <value>[registerDate]</value>
      <value>10</value>
    </row>
  </table>

</dataset>

@Override
protected IDataSet getDataSet() throws Exception {
    XmlDataSet bankAccountDataSet = new XmlDataSet(
        this.getClass().getClassLoader().getResourceAsStream(
            "datasets/bankAccount_dataset.xml"));
    ReplacementDataSet rBankAccountDataSet = 
        new ReplacementDataSet(bankAccountDataSet);
    rBankAccountDataSet.addReplacementObject(
        "[registerDate]", new Timestamp(new Date().getTime()));
    return new CompositeDataSet(new IDataSet[] {rBankAccountDataSet});
}

svn list http://ezpay-dev.liquix.eu/svn/Projects --depth infinity | fgrep ResetTotalsJob.java

The svn list command with the –depth infinity option lists all files, starting from the specified remote repository location,  and the files in ALL subfolders recursively from there on.

The fgrep MAC OS command filters the result returned by that svn command and displays only the lines containing ResetTotalsJob.java.

env

=>mac os command to see the values of system variables

 sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit hosts

=> forces the hosts file to be opened by TextEdit.

grep -lr “reporting” .

=> searches all files containing “reporting”, starting at current directory and searches recursively in all directories contained therein.

fgrep -ilr “reloadCard” .

whereis mvn

=> shows where that program is located

 ls -la /usr/bin/mvn

=> shows where this symbolic link is pointing to

sudo ln -s /Users/hordine/software/apache-maven-2.2.1/bin/mvn /usr/bin/mvn

=> to create a symbolic link


Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
int minute = cal.get(Calendar.MINUTE) + 1;
int hour = cal.get(Calendar.HOUR_OF_DAY);
String jobCron = "1 " + minute + " " + hour + " * * ?";
return new ScheduledJob[] {
new ScheduledJob( "LebaraPromotionVoucherJob", LebaraPromotionVoucherJob.class, WEB_RELOAD_SOLUTION_JOBS, jobCron)
};


The minute variable holds the value of the current minute plus 1, the hour the value of the current hour, and the final Cron Expression specifies the 1st second of the next minute of the current hour of each day.

This is useful for testing Quartz Jobs. That way the job will run only once, each day, but by the same minute of the next day you’ll have done all the debugging that you needed to do.

load data local
infile ‘/Users/hordine/documents/MSISDNPUK.txt’
replace
into table registrationdb.activation_code
FIELDS TERMINATED BY ‘,’
LINES TERMINATED BY ‘\n’
(deviceNumber, @activationCode)
set institutionId = ’999999′, activationCode = SHA1(@activationCode), registrationDate = current_timestamp

Load Data Local infile means you’re going to load data from the local file that you’ll specify next. 

Replace means that if a row already exists in the table into which you’re importing the data, the row will be deleted and a new one will be created. A row is considered as existing when the value of the primary key, of a unique key, or of a unique index, matches the value being imported from the text file.

Into table is pretty much obvious and if you need me to explain what that means maybe you shouldn’t be reading this anyway.

FIELDS TERMINATED BY specifies the character that separates the fields, or columns, if you will.

LINES TERMINATED BY specifies the character that marks the end a line, or of a record if you want it to be called a record. ‘\n’ is actually the default value, which works fine for text files being read from MAC OS, but if you’re using Windows, you should mark the end of a line as ‘\r\n’.

(deviceNumber, @activationCode) means that the two values (read for each line) will be stored in the deviceNumber column of the table and the @activationCode variable.

Also for each line, the next line (set institutionId = ’999999′, activationCode = SHA1(@activationCode), registrationDate = current_timestamp) is executed and sets the value of the column institutionId to a constant value, activationCode to the encoded version of the variable @activationCode, and registrationDate to the current timestamp.

Shows the values attributed to environment variables

fgrep

Can be used to search files containing a certain pattern (String).

Eg.: fgrep -ilr “reloadCard” .

searches all files containing “reporting”, starting at current directory and searches recursively in all directories contained therein.

sudo

Runs the next command as a super user.

Eg.: sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit hosts

runs the TextEdit application to open the hosts file.

Whereis

Shows where the specified command is located.

Eg.: whereis mvn

• SELECT
• CONVERT(DATETIME, RTRIM(jh.run_date))
  + (jh.run_time * 9 +
  jh.run_time % 10000 * 6 +
  jh.run_time % 100 * 10) / 216e4 AS RunDateTime,
• j.name AS JobName,
• jh.step_id AS StepID,
• SUBSTRING(RIGHT(’000000′ + CONVERT(varchar(6), jh.run_duration), 6), 1, 2) + ‘:’ + SUBSTRING(RIGHT(’000000′ + CONVERT(varchar(6), jh.run_duration), 6), 3, 2) + ‘:’ + SUBSTRING(RIGHT(’000000′ + CONVERT(varchar(6), jh.run_duration), 6), 5, 2) AS StepRunTime,
• jh.step_name AS StepName
• FROM msdb..sysjobhistory jh

INNER JOIN msdb..sysjobs j ON jh.job_id = j.job_id

ORDER BY jh.run_date, jh.run_time, j.job_id, jh.step_id

select job.name as job_name, job.start_step_id,

step.step_id, step.step_name, step.subsystem, step.command,

step.flags, step.additional_parameters, step.cmdexec_success_code,

step.on_success_action, step.on_success_step_id, step.on_fail_action,

step.on_fail_step_id, step.output_file_name, step.last_run_outcome,

step.last_run_duration, step.last_run_retries, step.last_run_date,

step.last_run_time

from  msdb..sysjobsteps step

join msdb..sysjobs job on step.job_id = job.job_id

where job.enabled = 1

order by job_name, step.step_id

In this example the DataSource for the report was a query hardcoded in the Jrxml.

String periodString = sdf.format(params.get(“REPORTING_DATE”));
String jasperFileName= “ManagementSummary.jasper”;
String jasperCsvFileName= “ManagementSummaryCSV.jasper”;
String jasperFullFileName = jasperFileDirectory + jasperFileName;
System.out.println(“Filling report with jasper report file [" + jasperFullFileName + "] with parameters [" + params + "]“);
String jrprintFileName = StringUtils.replace(jasperFileName, “.jasper”, “_” + providerId + “_” + periodString + “.jrprint”);
String jrPrintFilePath = generatedReportsDirectory + jrprintFileName;
String pdfFileName = null;

• try {
• JasperPrint jasperPrint = JasperFillManager.fillReport(jasperFileDirectory + jasperFileName, params, connection);
• System.out.println(“Done generating [" + generatedReportsDirectory + jrprintFileName + "]“);
• // determine the pdf file name
• pdfFileName = StringUtils.replace(jrPrintFilePath, “.jrprint”, “.pdf”);
• String csvFileName = StringUtils.replace(jrPrintFilePath, “.jrprint”, “.csv”);
• JasperExportManager.exportReportToPdfFile(jasperPrint, pdfFileName);
• System.out.println(“Done generating [" + pdfFileName + "]“);
• System.out.println(“Generating report in CSV”);
• jasperPrint = JasperFillManager.fillReport(jasperFileDirectory + jasperCsvFileName, params, connection);
• // This is the part to export to a CSV
• JRCsvExporter csvExporter = new JRCsvExporter();
• csvExporter.setParameter(JRCsvExporterParameter.FIELD_DELIMITER, “,”);
• csvExporter.setParameter(JRCsvExporterParameter.RECORD_DELIMITER,”\n”);
• csvExporter.setParameter(JRCsvExporterParameter.JASPER_PRINT, jasperPrint);
• csvExporter.setParameter(JRCsvExporterParameter.IGNORE_PAGE_MARGINS, true);
• csvExporter.setParameter(JRCsvExporterParameter.OUTPUT_FILE_NAME, csvFileName);
• csvExporter.exportReport();
• } catch (JRException e) {
• e.printStackTrace();
• }

Here’s the full stack trace:

net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error evaluating expression :
Source text : $F{number_awaiting_moto}/$V{transaction_project_number_total}
at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:195)
at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:589)
at net.sf.jasperreports.engine.fill.JRCalculator.evaluate(JRCalculator.java:557)
at net.sf.jasperreports.engine.fill.JRFillElement.evaluateExpression(JRFillElement.java:929)
at net.sf.jasperreports.engine.fill.JRFillTextField.evaluateText(JRFillTextField.java:383)
at net.sf.jasperreports.engine.fill.JRFillTextField.evaluate(JRFillTextField.java:368)
at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:258)
at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:499)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:2036)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:760)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:270)
at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:946)
at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:845)
at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247)
at eu.liquix.reporting.DailyRecurringTransactionsReporting.generateDailyRecurringTransactionSummary(DailyRecurringTransactionsReporting.java:191)
at eu.liquix.reporting.DailyRecurringTransactionsReporting.main(DailyRecurringTransactionsReporting.java:121)
Caused by: java.lang.ArithmeticException: Division undefined
at java.math.BigDecimal.divide(BigDecimal.java:1654)
at org.codehaus.groovy.runtime.typehandling.BigDecimalMath.divideImpl(BigDecimalMath.java:66)
at org.codehaus.groovy.runtime.dgmimpl.NumberNumberDiv$NumberNumber.invoke(NumberNumberDiv.java:320)
at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:53)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at ManagementSummaryCSV_1320158618653_126888.evaluate(calculator_ManagementSummaryCSV_1320158618653_126888:709)
at net.sf.jasperreports.engine.fill.JREvaluator.evaluate(JREvaluator.java:182)
… 18 more

The query that I used as my datasource sums up a bunch of values and it would return one row with a bunch of zeros as a result, even if no records where found. Then, a variable in my Jrxml would also be attributed zero, and finally the evaluation of a field expression, which divided something by that variable would cause the error.

To solve it, I changed the field expression to this:
$V{transaction_project_number_total} == 0? 0 :
$F{number_awaiting_moto}/$V{transaction_project_number_total}

Here’s how you can do it.

First you need to find out at which socket transport port your application server is listening for debug information. That’s usually sent to the dt_socket socket transport, which allows a JVM to communicate with debugging applications.

Here’s an example of Tomcat’s console displaying that information:

Now you can create your debug configuration on Eclipse.

For that, go to “Debug configurations…”, right click on Java Remote Application and select New:

Enter the configuration’s name, the project that you want to debug, the host name, and the port at which your application server is listening for transport dt_socket (in this case 5555), and click Apply.

You’re done!