备份

public static Dataset getDataSet(Script script,Chart javaChart, String type) {  DatasetReader reader = javaChart.getReader();      String labelField = javaChart.getLabelField(); //x-axis data      ArrayList plotData = javaChart.getPlotData(); //available data for specific dataset      ArrayList fieldData = javaChart.getFieldData(); //y-axis data                // initialize  XYDataset fieldCollection.      ArrayList<String> fields = new ArrayList<String>(); //different fields name      ArrayList<XYSeries> series = null; // collection of data in the same field    XYSeriesCollection xySeriesCollection = null; // collections of data in different fields    int flag = 0;// flag is a mark for different type dataset.              if(reader == null || labelField == null || plotData == null || plotData.isEmpty()){          return null;      }        // classify different diagram to different dataset     if(type.equals("4")||type.equals("11")||type.equals("14")    ||type.equals("15")||type.equals("16")){      dataset = new DefaultXYDataset();      series = new ArrayList<XYSeries>();       xySeriesCollection = new XYSeriesCollection();     flag = 2;      }      Dataset set = null; // the raw data    try {    set = reader.read(script, -1);      } catch (Exception e1) {      e1.printStackTrace();      return null;      }        for (int i = 0; i < set.getRowCount(); i++) { //check each row    String legendField = "";     String field = "";      for (int k = 0; k < fieldData.size(); k++) {      // if one row has more than one y-value, combine them      if (!fieldData.isEmpty()) {      legendField = (String) fieldData.get(k);       field = (set.getValueAt(i, legendField) + field).toString();      } else {      legendField = null;      field = null;      }// end if      } // end for      System.out.println("field = " + field);                // count fields and record them    if(!fields.contains(field) && flag == 2){      fields.add(field);      XYSeries xyseries = new XYSeries(field);       series.add(xyseries);      }      for (int j = 0; j < plotData.size(); j++) {       String label = set.getValueAt(i, labelField) + "";      double val = 0.0;         // get x,y data, change data type    Object o = set.getValueAt(i,((PlotData) plotData.get(j)).getField());      if(o==null||o.getClass().toString().equals("class java.lang.String"))      continue;      Number n = (Number) o;      val = n.doubleValue();      LabelValue testValue = new LabelValue(label, i);      String label2 = testValue.toString();         // reassemble data which are in same field into XYDataset structure    if(flag == 2){      try{      double x = Double.parseDouble(label2);      int num = fields.indexOf(field);      series.get(num).add(Double.parseDouble(label2), val);      }catch(Exception e){      e.printStackTrace();      return error;      }      }else{      addValue(dataset, val, field + '-' +     ((PlotData) plotData.get(j)).getField(),label2);      }// end if      System.out.println("the field is: " + ((PlotData) plotData.get(j)).getField());    System.out.println("the value is: " + val);    System.out.println("the label is: " + label2);    }// end for              // get collections of data in different fields    if(flag == 2){    Iterator iterator = series.iterator();            while(iterator.hasNext()){      xySeriesCollection.addSeries((XYSeries) iterator.next());      } // end while      return xySeriesCollection;      }else{      return dataset;      } // end if      }// end for}