demo-tabledata-modify/src/main/java/com/fr/plugin/tabledata/modify/DemoDataModel.java

package com.fr.plugin.tabledata.modify;


import com.fr.data.AbstractDataModel;
import com.fr.general.data.DataModel;
import com.fr.general.data.TableDataException;
import com.fr.json.JSONObject;

public class DemoDataModel extends AbstractDataModel {

    private DataModel old = null;
    private static String[] exCols = new String[]{"user","qnumber","addr"};
    public DemoDataModel( DataModel old ){
        this.old = old;
    }

    @Override
    public int getColumnCount() throws TableDataException {
        return old.getColumnCount()+2;
    }

    @Override
    public String getColumnName(int i) throws TableDataException {
        if(i<5){
            return old.getColumnName(i);
        }
        if(i<8){
            return exCols[i-5];
        }
        return old.getColumnName(i-2);
    }

    @Override
    public int getRowCount() throws TableDataException {
        return old.getRowCount();
    }

    @Override
    public Object getValueAt(int r, int c) throws TableDataException {
        if( c<5 ){
            return old.getValueAt(r,c);
        }
        if( c<8 ){
            try{
                String val = (String) old.getValueAt(r,5);
                JSONObject item = new JSONObject(val);
                return item.opt(exCols[c-5]);
            }catch(Exception e){
                return null;
            }
        }
        return old.getValueAt(r,c-2);
    }
}