getInputRowMeta()

[begunrom]

Hi,

In processRow there is line to initialize outputRowMeta

data.outputRowMeta = getInputRowMeta().clone();

This works for example addXLM
In my project getInputRowMeta().clone() returns null.

I guess that this is because there are multiple input steps, all with
a different field layout.

Can someone explain where the initialization of InputRowMeta is
supposed to happen and how i can fetch the InputRowMeta of inputstep x.

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[Marc Marschner]

Hi,

You can first grab the RowSet (org.pentaho.di.core.RowSet) by calling the
findInputRowSet(String sourceStep) of the BaseStep your Plugin should
extend.
From the RowSet, you can the RowMetaInterface by calling getRowMeta().

RowSet rowSet = findInputRowSet("x");
RowMetaInterface rowMeta = rowSet.getRowMeta();

You can retrieve a list of all Steps connected as input to your current step
from your dialogue for example, by calling

String previousSteps[] = transMeta.getPrevStepNames(stepname);



-----Original Message-----
From: kettle-developers (AT) googlegroups (DOT) com
[mailto:kettle-developers (AT) googlegroups (DOT) com] On Behalf Of begunrom
Sent: Freitag, 09. September 2011 18:43
To: kettle-developers
Subject: getInputRowMeta()

Hi,

In processRow there is line to initialize outputRowMeta

data.outputRowMeta = getInputRowMeta().clone();

This works for example addXLM
In my project getInputRowMeta().clone() returns null.

I guess that this is because there are multiple input steps, all with
a different field layout.

Can someone explain where the initialization of InputRowMeta is
supposed to happen and how i can fetch the InputRowMeta of inputstep x.

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[begunrom]

Thanks,

I got it working:

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