FindOwnersForm


1   package org.springframework.samples.petclinic.web;
2   
3   import java.util.Collection  ;
4   
5   import javax.servlet.http.HttpServletRequest  ;
6   import javax.servlet.http.HttpServletResponse  ;
7   
8   import org.springframework.samples.petclinic.Owner;
9   import org.springframework.validation.BindException;
10  import org.springframework.web.servlet.ModelAndView;
11  
12  /**
13   * JavaBean Form controller that is used to search for <code>Owner</code>s by last name.
14   *
15   * @author Ken Krebs
16   */
17  public class FindOwnersForm extends AbstractClinicForm {
18  
19      private String   selectView;
20  
21      /** Creates a new instance of FindOwnersForm */
22      public FindOwnersForm() {
23          // OK to start with a blank command object
24          setCommandClass(Owner.class);
25      }
26  
27      /**
28       * Set the name of the view that should be used for selection display.
29       */
30      public void setSelectView(String   selectView) {
31          this.selectView = selectView;
32      }
33  
34      protected void initApplicationContext() {
35          super.initApplicationContext();
36          if (this.selectView == null) {
37              throw new IllegalArgumentException  ("selectView isn't set");
38          }
39      }
40  
41      /**
42       * Method used to search for owners renders View depending on how many are found.
43       */
44      protected ModelAndView onSubmit(
45              HttpServletRequest   request, HttpServletResponse   response, Object   command, BindException errors)
46              throws Exception   {
47  
48          Owner owner = (Owner) command;
49  
50          // find owners by last name
51          Collection   results = getClinic().findOwners(owner.getLastName());
52  
53          if (results.size() < 1) {
54              // no owners found
55              errors.rejectValue("lastName", "notFound", null, "not found");
56              return showForm(request, response, errors);
57          }
58  
59          if (results.size() > 1) {
60              // multiple owners found
61              return new ModelAndView(this.selectView, "selections", results);
62          }
63  
64          // 1 owner found
65          owner = (Owner) results.iterator().next();
66          return new ModelAndView(getSuccessView(), "ownerId", owner.getId());
67      }
68  
69  }
70
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