TreeBuilderAction


1   /*
2    */
3   package org.oddjob.webapp.struts.actions;
4   
5   import javax.servlet.ServletContext  ;
6   import javax.servlet.http.HttpServletRequest  ;
7   import javax.servlet.http.HttpServletResponse  ;
8   
9   import org.apache.struts.action.Action;
10  import org.apache.struts.action.ActionForm;
11  import org.apache.struts.action.ActionForward;
12  import org.apache.struts.action.ActionMapping;
13  import org.oddjob.webapp.WebappConstants;
14  import org.oddjob.webapp.model.JobInfoLookup;
15  import org.oddjob.webapp.struts.forms.TreeFormBean;
16  import org.oddjob.webapp.struts.forms.TreeNodeBeanBuilder;
17  
18  /**
19   * Struts action to build the tree view.
20   * 
21   * @author Rob Gordon.
22   */
23  public class TreeBuilderAction extends Action {
24  //  private static final Logger logger = Logger.getLogger(TreeBuilderAction.class);
25      
26      /*
27       *  (non-Javadoc)
28       * @see org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
29       */
30      public ActionForward execute(ActionMapping mapping, ActionForm form,
31              HttpServletRequest   request, HttpServletResponse   response)
32      throws Exception   {
33          TreeFormBean treeForm = (TreeFormBean) form;
34          ServletContext   context = request.getSession().getServletContext();
35          JobInfoLookup lookup = (JobInfoLookup) context.getAttribute(WebappConstants.DETAIL_LOOKUP);
36          TreeNodeBeanBuilder builder = new TreeNodeBeanBuilder(lookup);
37          if (treeForm.getRoot() == null) {
38              treeForm.setRoot(builder.buildRoot());          
39          } else {
40               builder.refresh(treeForm.getRoot());
41          }
42          
43          /* return back to the page we came */
44          return (mapping.findForward("input"));
45      }
46      
47  }
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