Databases
StackOverflow2013
Postsdbo
POSQL Query has no results how do I tell that to a user in my program
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSQL Query has no results how do I tell that to a user in my program
    primarykey
    data
    text
    <p>I am building a program which checks the roles of users. When a button gets pressed it uses the userID to query the role/group table of our database. If a person is not in the role/group tables then they are a requester. I have the following code, and was wondering why the last <code>else if</code> statement is not working.</p> <p>When we set a person to be a requester, they are literally removed from the role/group tables. So the <code>resultset</code> should be empty. Right?</p> <pre><code>ResultSet rs = stmt.executeQuery(getRolesQuery2.toString()); try { boolean empty = true; while (rs.next()) { empty = false; userRole = rs.getInt(1); userGroup = rs.getInt(2); System.out.println("The Users Current Role/Group is: " +userRole+ "/" +userGroup); if(userRole == 4 &amp;&amp; userGroup == 1) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " NDS Administrator"); } else if(userRole == 1 &amp;&amp; userGroup == 3) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " Privacy Administrator"); } else if(userRole == 1 &amp;&amp; userGroup == 5) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " Security Administrator"); } else if(userRole == 1 &amp;&amp; userGroup == 7) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " ORD Administrator"); } else if(userRole == 1 &amp;&amp; userGroup == 9) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " OEF-OIF Administrator"); } else if(userRole == 1 &amp;&amp; userGroup == 11) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " Surgery Administrator"); } else if(userRole == 1 &amp;&amp; userGroup == 13) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " Capri Administrator"); } else if(userRole == 3 &amp;&amp; userGroup == 15) { userRoleLbl.setText("The User Role/Group is: " +userRole+ "/" +userGroup+ " DART Super User"); } //TODO: Add some handling for if the role/group is not present which means they are a requester else if(empty) { userRoleLbl.setText("The User is a Requester"); } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USDarthOpto
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POSQL Query has no results how do I tell that to a user in my program
      1. This table or related slice is empty.
      1. VTUpMod
    1. COempty has been set to false on entry to the while loop and never set again so if(empty) can never be true.
      singulars
      1. POSQL Query has no results how do I tell that to a user in my program
      1. USJamesB
    2. COif there are no results, will it enter the while loop at all?
      singulars
      1. POSQL Query has no results how do I tell that to a user in my program
      1. USAFischbein
    3. COI followed the steps from the accepted answer here: http://stackoverflow.com/questions/2938812/how-to-find-out-if-a-java-resultset-obtained-is-empty
      singulars
      1. POSQL Query has no results how do I tell that to a user in my program
      1. USDarthOpto
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload