设置RowKey

import java.text.DecimalFormat;
public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException {
  if (first) {
    first = false;
  }
  Object[] r = getRow();
  if (r == null) {
    setOutputDone();
    return false;
  }
  r = createOutputRow(r, data.outputRowMeta.size());
  String GMSFHM = get(Fields.In, "GMSFHM").getString(r);
  String XM = get(Fields.In, "XM").getString(r);
  String YXX = get(Fields.In, "YXX").getString(r);
  String rawId = GMSFHM+"_"+XM+"_"+YXX;
  int hashCode = rawId.hashCode();
    //在下方的参数tab中设置的参数
  int regions = Integer.valueOf(getParameter("regions"));
  int regionCode = Math.abs(hashCode) % regions;
  //格式化分区号
  DecimalFormat df = new DecimalFormat("00");
  String ID = df.format(regionCode)+"_"+rawId;
  get(Fields.Out, "ID").setValue(r, ID);
  putRow(data.outputRowMeta, r);
  return true;
}