0 Replies Latest reply: Mar 19, 2012 4:10 PM by Peter Penzov RSS

    JSF - input field is not updated

    Peter Penzov Newbie

      I have a problem with a JSF page which I can't solve. I have a JSF page which is used to store application settings into database table. This is the source code of the JSF page:

       

       

      <div id="settingsdiv" style="width:550px; height:400px; position:absolute;  background-color:r; top:20px; left:1px">
      
                              <h:panelGrid columns="2">
                                  <h:panelGroup>User Session Timeout</h:panelGroup>
                                  <h:panelGroup>
                                      <h:selectOneMenu value="#{ApplicationController.settings['SessionTTL']}">
                                          <f:selectItem itemValue="#{ApplicationController.settings['SessionTTL']}" itemLabel="#{ApplicationController.settings['SessionTTL']}" />
                                          <f:selectItem itemValue="two" itemLabel="Option two" />
                                          <f:selectItem itemValue="three" itemLabel="Option three" />
                                          <f:selectItem itemValue="custom" itemLabel="Define custom value" />
                                          <f:ajax render="input" />
                                      </h:selectOneMenu> 
                                      <h:panelGroup id="input">
                                          <h:inputText value="#{ApplicationController.settings['SessionTTL']}" rendered="#{ApplicationController.settings['SessionTTL'] == 'custom'}" required="true" />
                                      </h:panelGroup>          
                                  </h:panelGroup>
      
                                  <h:panelGroup>Maximum allowed users</h:panelGroup>
                                  <h:panelGroup>
                                      <h:selectOneMenu value="#{ApplicationController.settings['MaxUsersActive']}">
                                          <f:selectItem itemValue="#{ApplicationController.settings['MaxUsersActive']}" itemLabel="#{ApplicationController.settings['MaxUsersActive']}" />
                                          <f:selectItem itemValue="two" itemLabel="Option two" />
                                          <f:selectItem itemValue="three" itemLabel="Option three" />
                                          <f:selectItem itemValue="custom" itemLabel="Define custom value" />
                                          <f:ajax render="inputl" />
                                      </h:selectOneMenu> 
                                      <h:panelGroup id="inputl">
                                          <h:inputText value="#{ApplicationController.settings['MaxUsersActive']}" rendered="#{ApplicationController.settings['MaxUsersActive'] == 'custom'}" required="true" />
                                      </h:panelGroup>
                                  </h:panelGroup>                                                                     
                              </h:panelGrid>                         
      
      
      
                          </div>   
      
                          <div id="settingsdiv" style="width:350px; height:400px; position:absolute;  background-color:transparent; top:20px; left:400px">
      
      
      
                          </div>   
      
                          <div id="settingsdiv" style="width:150px; height:60px; position:absolute;  background-color:transparent; top:380px; left:800px">
      
                              <h:commandButton value="Save Settings" action="#{ApplicationController.updateDBSettings()}"/>
                          </div>   
      
      
                      </h:form> 
      
      

       

      And this is the managed bean:

       

       

      import java.io.Serializable;
      import javax.enterprise.context.SessionScoped;
      // or import javax.faces.bean.SessionScoped;
      import javax.inject.Named;
      /* include SQL Packages */
      import java.sql.Connection;
      import java.sql.PreparedStatement;
      import java.sql.ResultSet;
      import java.sql.SQLException;
      import java.util.HashMap;
      import javax.annotation.PostConstruct;
      import javax.sql.DataSource;
      import javax.annotation.Resource;
      import javax.faces.context.FacesContext;
      import javax.inject.Inject;
      import javax.servlet.http.HttpServletRequest;
      import javax.servlet.http.HttpSession;
      // or import javax.faces.bean.ManagedBean;   
      
      import org.glassfish.osgicdi.OSGiService;
      
      @Named("ApplicationController")
      @SessionScoped
      public class Application implements Serializable {
      
          /* This Hash Map will be used to store setting and value */
          private HashMap<String, String> settingsMap = null;    
      
          public Application(){     
          }   
      
          /* Call the Oracle JDBC Connection driver */
          @Resource(name = "jdbc/Oracle")
          private DataSource ds;
      
      
          /* Hash Map
           * Send this hash map with the settings and values to the JSF page
           */
          public HashMap<String, String> getsettings(){
              return settingsMap;        
          }
      
          /* Get a Hash Map with settings and values. The table is genarated right 
           * after the constructor is initialized. 
           */
          @PostConstruct
          public void initSettings() throws SQLException
          {        
              settingsMap = new HashMap<String, String>();
      
              if(ds == null) {
                      throw new SQLException("Can't get data source");
              }
              /* Initialize a connection to Oracle */
              Connection conn = ds.getConnection(); 
      
              if(conn == null) {
                      throw new SQLException("Can't get database connection");
              }
              /* With SQL statement get all settings and values */
              PreparedStatement ps = conn.prepareStatement("SELECT * from GLOBALSETTINGS");
      
              try
              {
                  //get data from database        
                  ResultSet result = ps.executeQuery();
                  while (result.next())
                  {
                     settingsMap.put(result.getString("SettingName"), result.getString("SettingValue"));
                  }            
              }
              finally
              {
                  ps.close();
                  conn.close();         
              }        
          }
      
          /* JSF returns the updated values into the HashMap */
      
          /* Update Settings Values */
          public void updateDBSettings() throws SQLException {
      
                  String SQL_Statement = null;
      
                  if (ds == null) throw new SQLException();      
              Connection conn = ds.getConnection();
                  if (conn == null) throw new SQLException();      
      
          try {
              conn.setAutoCommit(false);
              boolean committed = false;
                  try {  
                         /* Insert the new settings values with one SQL statement */
                         SQL_Statement = "UPDATE GLOBALSETTINGS " +
                                              "SET \"SettingValue\" = " +
                                                "CASE " +
                                                  "WHEN \"SettingName\" = 'SessionTTL' THEN ? " +
                                                  "WHEN \"SettingName\" = 'MaxUsersActive' THEN ? " +
                                                "END " +
                                         "WHERE \"SettingName\"  IN ('SessionTTL', 'MaxUsersActive')";
                         /* Exete thre SQL statement */
                         PreparedStatement updateQuery = conn.prepareStatement(SQL_Statement);
                         updateQuery.setString(1, settingsMap.get("SessionTTL"));
                         updateQuery.setString(2, settingsMap.get("MaxUsersActive"));
      
                         updateQuery.executeQuery();                                                         
                         conn.commit();
                         committed = true;
                     } finally {
                         if (!committed) conn.rollback();
                         }
                  }
                  finally {
                  /* Release the resource after all SQL queries are executed */
                  conn.close();                
                  }             
           }    
      
      
      }
      
      

       

       

      This is the problem that I face:

      When I open the JSF page I get this menus:

       

      1.png

       

      Then I select custom from the menu:

       

      2.png

       

      I get this input field next to the menu:

       

      3.png

       

      Then I enter custom value from the keyboard:

       

      4.png

       

      But when I click Save button I get this. I can see that the database field is updated but the values is "custom"

       

      5.png

       

      When I enter the same twice value I get this:

       

      6.png

       

      I seems that when I click custom and I enter the custom value the HashMap is not updated. It's strange that when I do it again the HashMap is updated and the value is correct. How I can fix this problem?

       

      I tried to reload the map from the DB after save. I called initSettings() in the end of updateDBSettings() but there was no change.

       

      Best Wishes