Improve the subscribed category details API

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/SubscriptionManagerImpl.java

@@ -628,6 +628,7 @@ public class SubscriptionManagerImpl implements SubscriptionManager {
         PaginationResult paginationResult = new PaginationResult();
         try {
             ConnectionManagerUtil.openDBConnection();
+
             ApplicationDTO applicationDTO = this.applicationDAO
                     .getAppWithRelatedRelease(appUUID, tenantId);
             int applicationReleaseId = applicationDTO.getApplicationReleaseDTOs().get(0).getId();
@@ -667,53 +668,4 @@ public class SubscriptionManagerImpl implements SubscriptionManager {
             ConnectionManagerUtil.closeDBConnection();
         }
     }
-
-    @Override
-    public PaginationResult getAppInstalledCategories(int offsetValue, int limitValue,
-                                                      String appUUID, String subType)
-            throws ApplicationManagementException {
-
-        int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId(true);
-        PaginationResult paginationResult = new PaginationResult();
-        try {
-            ConnectionManagerUtil.openDBConnection();
-
-            ApplicationDTO applicationDTO = this.applicationDAO
-                        .getAppWithRelatedRelease(appUUID, tenantId);
-            int applicationReleaseId = applicationDTO.getApplicationReleaseDTOs().get(0).getId();
-
-            int count=0;
-            List<String> SubscriptionList = new ArrayList<>();
-
-            if(SubsciptionType.USER.toString().equalsIgnoreCase(subType)){
-                SubscriptionList = subscriptionDAO
-                     .getAppSubscribedUsers(offsetValue, limitValue, applicationReleaseId, tenantId);
-            }else if(SubsciptionType.ROLE.toString().equalsIgnoreCase(subType)){
-                SubscriptionList = subscriptionDAO
-                     .getAppSubscribedRoles(offsetValue, limitValue, applicationReleaseId, tenantId);
-            }else if(SubsciptionType.GROUP.toString().equalsIgnoreCase(subType)) {
-                SubscriptionList = subscriptionDAO
-                     .getAppSubscribedGroups(offsetValue, limitValue, applicationReleaseId, tenantId);
-            }
-            count = SubscriptionList.size();
-            paginationResult.setData(SubscriptionList);
-            paginationResult.setRecordsFiltered(count);
-            paginationResult.setRecordsTotal(count);
-
-            return paginationResult;
-
-        } catch (ApplicationManagementDAOException e) {
-            ConnectionManagerUtil.rollbackDBTransaction();
-            String msg = "Error occurred when get application release data for application" +
-                         " release UUID: " + appUUID;
-            throw new ApplicationManagementException(msg, e);
-        } catch (DBConnectionException e) {
-            String msg = "DB Connection error occurred while getting category details that " +
-                         "given application id";
-            log.error(msg);
-            throw new ApplicationManagementException(msg, e);
-        } finally {
-            ConnectionManagerUtil.closeDBConnection();
-        }
-    }
 }