fixing App Version not updating in portal after being initially set

components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/app/mgt/Application.java

@@ -150,6 +150,9 @@ public class Application implements Serializable {
         if (applicationIdentifier != null ? !applicationIdentifier.equals(that.applicationIdentifier) : that.applicationIdentifier != null) {
             return false;
         }
+        if (version != null ? !version.equals(that.version) : that.version != null) {
+            return false;
+        }
         return true;
     }
 

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/app/mgt/ApplicationManagerProviderServiceImpl.java

@@ -217,13 +217,14 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
                     appIdsToRemove.add(installedApp.getId());
                 }
             }
-
+            applicationMappingDAO.removeApplicationMapping(device.getId(), appIdsToRemove, tenantId);
             Application installedApp;
             List<Integer> applicationIds = new ArrayList<>();
 
             for (Application application : applications) {
                 if (!installedAppList.contains(application)) {
-                    installedApp = applicationDAO.getApplication(application.getApplicationIdentifier(), tenantId);
+                    installedApp = applicationDAO.getApplication(application.getApplicationIdentifier(),
+                            application.getVersion(), tenantId);
                     if (installedApp == null) {
                         appsToAdd.add(application);
                     } else {
@@ -244,7 +245,7 @@ public class ApplicationManagerProviderServiceImpl implements ApplicationManagem
             if (log.isDebugEnabled()) {
                 log.debug("num of remove app Ids:" + appIdsToRemove.size());
             }
-            applicationMappingDAO.removeApplicationMapping(device.getId(), appIdsToRemove, tenantId);
+
             DeviceManagementDAOFactory.commitTransaction();
         } catch (DeviceManagementDAOException e) {
             DeviceManagementDAOFactory.rollbackTransaction();

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/ApplicationDAO.java

@@ -32,5 +32,7 @@ public interface ApplicationDAO {
 
     Application getApplication(String identifier, int tenantId) throws DeviceManagementDAOException;
 
+    Application getApplication(String identifier, String version,int tenantId) throws DeviceManagementDAOException;
+
     List<Application> getInstalledApplications(int deviceId) throws DeviceManagementDAOException;
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/ApplicationDAOImpl.java

@@ -228,6 +228,34 @@ public class ApplicationDAOImpl implements ApplicationDAO {
         }
     }
 
+    @Override
+    public Application getApplication(String identifier, String version, int tenantId) throws DeviceManagementDAOException {
+        Connection conn;
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        Application application = null;
+        try {
+            conn = this.getConnection();
+            stmt = conn.prepareStatement("SELECT ID, NAME, APP_IDENTIFIER, PLATFORM, CATEGORY, VERSION, TYPE, " +
+                    "LOCATION_URL, IMAGE_URL, APP_PROPERTIES, MEMORY_USAGE, IS_ACTIVE, TENANT_ID FROM DM_APPLICATION WHERE APP_IDENTIFIER = ? " +
+                    "AND VERSION = ?  AND TENANT_ID = ?");
+            stmt.setString(1, identifier);
+            stmt.setString(2, version);
+            stmt.setInt(3, tenantId);
+            rs = stmt.executeQuery();
+
+            if (rs.next()) {
+                application = this.loadApplication(rs);
+            }
+            return application;
+        } catch (SQLException e) {
+            throw new DeviceManagementDAOException("Error occurred while retrieving application application '" +
+                    identifier + "' and version '" + version + "'.", e);
+        } finally {
+            DeviceManagementDAOUtil.cleanupResources(stmt, rs);
+        }
+    }
+
     private Connection getConnection() throws SQLException {
         return DeviceManagementDAOFactory.getConnection();
     }