private synchronized Object[] getOutputRowData(Object[] row) throws KettleException {
Object[] outputRowData = RowDataUtil.allocateRowData(data.outputRowMeta.size());
for (int i = 0; i < data.NrPrevFields; i++) {
outputRowData[i] = row[i];
}
if (first) {
first = false;
} else {
for (int i = 0; i < data.inStreamNrs.length; i++) {
outputRowData[data.NrPrevFields + i] = data.previousRow[data.inStreamNrs[i]];
}
}
data.previousRow = row;
return outputRowData;
}
public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException {
meta = (GetPreviousRowFieldMeta) smi;
data = (GetPreviousRowFieldData) sdi;
Object[] r = getRow(); // Get row from input rowset & set row busy!
if (r == null) { // no more input to be expected...
setOutputDone();
return false;
}
if (first) {
data.inputRowMeta = getInputRowMeta();
data.NrPrevFields = data.inputRowMeta.size();
data.outputRowMeta = data.inputRowMeta.clone();
meta.getFields(data.outputRowMeta, getStepname(), null, null, this, repository, metaStore);
data.inStreamNrs = new int[meta.getFieldInStream().length];
for (int i = 0; i < meta.getFieldInStream().length; i++) {
data.inStreamNrs[i] = data.inputRowMeta.indexOfValue(meta.getFieldInStream()[i]);
if (data.inStreamNrs[i] < 0) { // couldn't find field!
throw new KettleException(
BaseMessages.getString(
PKG, "GetPreviousRowField.Exception.FieldRequired", meta.getFieldInStream()[i]));
}
}
data.outStreamNrs = new String[meta.getFieldInStream().length];
for (int i = 0; i < meta.getFieldInStream().length; i++) {
data.outStreamNrs[i] = meta.getFieldOutStream()[i];
if (Const.isEmpty(data.outStreamNrs[i])) {
throw new KettleStepException(
BaseMessages.getString(
PKG, "GetPreviousRowField.Exception.OutputFieldEmpty", "" + i));
}
}
} // end if first
try {
Object[] outputRow = getOutputRowData(r);
putRow(data.outputRowMeta, outputRow); // copy row to output rowset(s);
if (checkFeedback(getLinesRead())) {
if (log.isDetailed()) {
logDetailed(
BaseMessages.getString(PKG, "GetPreviousRowField.Log.LineNumber") + getLinesRead());
}
}
} catch (KettleException e) {
boolean sendToErrorRow = false;
String errorMessage = null;
if (getStepMeta().isDoingErrorHandling()) {
sendToErrorRow = true;
errorMessage = e.toString();
} else {
logError(
BaseMessages.getString(PKG, "GetPreviousRowField.Log.ErrorInStep", e.getMessage()));
setErrors(1);
stopAll();
setOutputDone(); // signal end to receiver(s)
return false;
}
if (sendToErrorRow) {
// Simply add this row to the error row
putError(getInputRowMeta(), r, 1, errorMessage, null, "GetPreviousRowField001");
}
}
return true;
}
