NewAggregateCommand


1   package jimm.datavision.gui.cmd;
2   import jimm.datavision.Report;
3   import jimm.datavision.Group;
4   import jimm.datavision.gui.FieldWidget;
5   import jimm.util.I18N;
6   
7   /**
8    * A command for adding a aggregate to a field for a particular section.
9    *
10   * @author Jim Menard, <a HREF="mailto:jimm@io.com">jimm@io.com</a>
11   */
12  public class NewAggregateCommand extends AbstractAggregateCommand {
13  
14  /**
15   * Constructor.
16   *
17   * @param report the report containing the field and the aggregate
18   * @param fw the field widget to which we are adding a aggregate
19   * @param group if <code>null</code>, the aggregate is added to the
20   * report footer; else the aggregate is added to the first section in
21   * the group's footer.
22   * @param functionName the aggregate function name
23   */
24  public NewAggregateCommand(Report report, FieldWidget fw, Group group,
25               String   functionName) {
26      super(report, fw, group, functionName, I18N.get("NewAggregateCommand.name"));
27      fieldWidget = fw;
28      this.group = group;
29  }
30  
31  public void perform() {
32      createAggregate();
33  }
34  
35  public void undo() {
36      deleteAggregate();
37  }
38  
39  }
40

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