ProjectsValidator


1   package transactions;
2   
3   import java.util.HashMap  ;
4   import javax.servlet.http.HttpServletRequest  ;
5   import dinamica.AbstractValidator;
6   import dinamica.*;
7   
8   public class ProjectsValidator extends AbstractValidator {
9   
10      //stores validation error msgs for every cell/row
11      StringBuffer   errMsg = new StringBuffer  ();
12  
13      public boolean isValid(
14          HttpServletRequest   req,
15          Recordset inputParams,
16          HashMap   attribs)
17          throws Throwable   
18      {
19      
20          //default return value
21          boolean flag = true;
22      
23          //read format mask to validate dates
24          String   dateFormat = getContext().getInitParameter("def-input-date");
25      
26          //read array of columns (grid)
27          String   id[] = getRequest().getParameterValues("project_id");
28          String   description[] = getRequest().getParameterValues("description");
29          String   budget[] = getRequest().getParameterValues("budget");
30          String   startdate[] = getRequest().getParameterValues("start_date");
31          String   managerid[] = getRequest().getParameterValues("manager_id");
32          String   log[] = getRequest().getParameterValues("log_activity");
33          
34          //create recordset to contain array values
35          Recordset rs = new Recordset();
36          rs.append("project_id", java.sql.Types.INTEGER);
37          rs.append("description", java.sql.Types.VARCHAR);
38          rs.append("budget", java.sql.Types.DOUBLE);
39          rs.append("start_date", java.sql.Types.DATE);
40          rs.append("log_activity", java.sql.Types.VARCHAR);
41          rs.append("manager_id", java.sql.Types.INTEGER);
42          
43          //validate data types
44          int length = description.length;
45          for(int i=0;i<length;i++)
46          {
47              
48              //add record
49              rs.addNew();
50              
51              //read plain values
52              rs.setValue("project_id", new Integer  (id[i]) );
53              rs.setValue("description", description[i]);
54              rs.setValue("log_activity", log[i]);
55              rs.setValue("manager_id", new Integer  (managerid[i]) );
56              
57              //check date
58              java.util.Date   d = ValidatorUtil.testDate(startdate[i], dateFormat);
59              if (d!=null)
60                  rs.setValue("start_date", d);
61              else
62              {
63                  errMsg.append("Invalid date on row #" + (i+1) + "; ");
64                  flag = false;
65              }
66                  
67              //check  double
68              Double   dn = ValidatorUtil.testDouble(budget[i]);
69              if (dn!=null)
70                  rs.setValue("budget", dn);
71              else
72              {
73                  errMsg.append("Invalid budget value on row #" + (i+1) + "; ");
74                  flag = false;
75              }
76          }
77          
78          //if validation=OK save recordset in request attribute so that
79          //the Transaction class can retrieve it and save it to DB
80          if (flag)
81              getRequest().setAttribute("projects", rs);
82          
83          return flag;
84          
85      }
86  
87      /**
88       * Override this method to supply a custom error message
89       */
90      public String   getErrorMessage() 
91      {
92          return errMsg.toString();
93      }
94  
95  }
96
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