bardatasetproducer.java

来自「dorado 展现中间件是一款企业级的商用AJAX平台软件」· Java 代码 · 共 93 行

package sample.integration.chart.bar;

import java.util.Date;
import java.util.List;
import java.util.Map;

import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;

import com.bstek.dorado.common.DoradoContext;
import com.bstek.dorado.data.db.DBStatement;
import com.bstek.dorado.utils.variant.VariantSet;

import de.laures.cewolf.DatasetProduceException;
import de.laures.cewolf.DatasetProducer;
import de.laures.cewolf.links.CategoryItemLinkGenerator;
import de.laures.cewolf.tooltips.CategoryToolTipGenerator;

public class BarDatasetProducer
    implements DatasetProducer,
    CategoryToolTipGenerator, CategoryItemLinkGenerator {

  public String getProducerId() {
    return null;
  }

  public boolean hasExpired(Map params, Date since) {
    return true;
  }

  public Object produceDataset(Map params)
      throws DatasetProduceException {

    DefaultCategoryDataset dataset = new DefaultCategoryDataset();
    DoradoContext context = DoradoContext.getContext();
    String deptId = context.getParameter("deptId");
    if (deptId != null) {
      DBStatement stmt = new DBStatement();
      stmt.setDataSource("doradosample");
      String sql =
          "select employee_id,employee_name,salary from employee where dept_id='"
          + deptId + "'";
      stmt.setSql(sql);
      try {
        List ls = stmt.queryForList();
        for (int i = 0; i < ls.size(); i++) {
          VariantSet vs = (VariantSet)ls.get(i);
          String employee_id = vs.getString("employee_id");
          String employee_name = vs.getString("employee_name");
          double salary = vs.getDouble("salary");
          dataset.addValue(salary, employee_name + "-" + employee_id,
                           employee_name);

        }
      }
      catch (Exception e) {
        e.printStackTrace();
        throw new IllegalArgumentException("数据处理异常.");
      }
      finally {
        stmt.close();
      }
    }
    return dataset;
  }

  public String generateLink(Object dataset, int series, Object category) {
    DefaultCategoryDataset ds = (DefaultCategoryDataset)dataset;
    String employeeId = ds.getRowKey(series).toString();
    employeeId = employeeId.substring(employeeId.indexOf("-") + 1,
                                      employeeId.length());
    StringBuffer sb = new StringBuffer();
    sb.append("javascript:");
    sb.append("var d=parent.datasetEmployee;");
    sb.append("var record = d.getFirstRecord();");
    sb.append("while (record) {");
    sb.append("var employeeId=record.getValue('employee_id');");
    sb.append("if(employeeId=='" + employeeId + "'){");
    sb.append("d.setCurrent(record);");
    sb.append("parent.document.getElementById('subwindowDetail').show(true,true);");
    sb.append("break;");
    sb.append("}");
    sb.append("record = record.getNextRecord();");
    sb.append("}");
    return sb.toString();
  }

  public String generateToolTip(CategoryDataset data, int series, int item) {
    return null;
  }

}