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我设置了一个用户定义的 java 类，它在特定的时间跨度内为每一天生成一行。如果我使用“测试类”测试类，一切都会按预期工作。但是，当在流程中实际调用该步骤时，我收到以下错误：

013/10/28 11:45:00 - Generate Dates.0 - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : Error initializing UserDefinedJavaClass:
2013/10/28 11:45:00 - Generate Dates.0 - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : org.codehaus.janino.CompileException
2013/10/28 11:45:00 - Generate Dates.0 - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : Error initializing step [Generate Dates]
2013/10/28 11:45:00 - Table output.0 - Connected to database [MSSQL Eric] (commit=1000)
2013/10/28 11:45:00 - Eingabe_Currencies - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : Step [Generate Dates.0] failed to initialize!
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : Eingabe_Currencies: preparing transformation execution failed
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : org.pentaho.di.core.exception.KettleException: 
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : We failed to initialize at least one step.  Execution can not begin!
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : 
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : 
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) :  at org.pentaho.di.trans.Trans.prepareExecution(Trans.java:932)
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) :  at org.pentaho.di.ui.spoon.trans.TransGraph$22.run(TransGraph.java:3652)
2013/10/28 11:45:00 - Spoon - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) :  at java.lang.Thread.run(Thread.java:724)
2013/10/28 11:45:00 - Eingabe_Currencies - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : Errors detected!
2013/10/28 11:45:00 - Eingabe_Currencies - ERROR (version 4.4.0-stable, build 17588 from 2012-11-21 16.02.21 by buildguy) : Errors detected!

该类的代码如下所示： import java.util.Date; 导入 java.util.Calendar；导入 java.text.SimpleDateFormat；

public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException
{
    Object[] r = getRow();
    if (r == null) {
        setOutputDone();
        return false;
    }

    Calendar calStart;

    calStart = Calendar.getInstance();
    calStart.set(Calendar.YEAR, 2013);
    calStart.set(Calendar.MONTH, 0);
    calStart.set(Calendar.DAY_OF_MONTH, 1);

    Calendar calEnd;
    calEnd = Calendar.getInstance();

    SimpleDateFormat sdfDatum=new SimpleDateFormat("yyyy-MM-dd");

    Calendar cal =  Calendar.getInstance();

    for(cal.setTime(calStart.getTime());cal.before(calEnd); cal.add(Calendar.DATE, 1))
    {
        r = createOutputRow(r, data.outputRowMeta.size());  
        try{        
        get(Fields.Out, "date").setValue(r, sdfDatum.format(cal.getTime()));}
        catch(Exception e) {}
        putRow(data.outputRowMeta, r);
    }
    setOutputDone();

    return false;
}

您对如何解决该问题有任何想法吗？

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1 回答 1

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为什么 processRow 返回 false？在返回 true 的样本中..

因此，每次处理一行时，您都在强迫您的步骤失败。

如果那是故意的，你是在使用错误处理还是什么？您能否附上转换和/或 .ktr 文件的图片？

于 2013-11-07T08:58:33.857 回答