Add pagination

components/application-mgt/io.entgra.device.mgt.core.application.mgt.common/src/main/java/io/entgra/device/mgt/core/application/mgt/common/services/ApplicationManager.java

@@ -27,6 +27,7 @@ import io.entgra.device.mgt.core.application.mgt.common.response.Category;
 import io.entgra.device.mgt.core.application.mgt.common.response.Tag;
 import io.entgra.device.mgt.core.device.mgt.common.Base64File;
 import io.entgra.device.mgt.core.application.mgt.common.dto.ApplicationDTO;
+import io.entgra.device.mgt.core.device.mgt.common.PaginationRequest;
 import io.entgra.device.mgt.core.device.mgt.common.exceptions.MetadataManagementException;
 import org.apache.cxf.jaxrs.ext.multipart.Attachment;
 import io.entgra.device.mgt.core.application.mgt.common.ApplicationArtifact;
@@ -281,7 +282,7 @@ public interface ApplicationManager {
      * @throws ApplicationManagementException
      * if an error occurred while getting subscribed app details for relevant device id,
      */
-    ApplicationList getSubscribedAppsOfDevice(int deviceId)
+    ApplicationList getSubscribedAppsOfDevice(int deviceId, PaginationRequest request)
             throws ApplicationManagementException;
 
     /**

components/application-mgt/io.entgra.device.mgt.core.application.mgt.core/src/main/java/io/entgra/device/mgt/core/application/mgt/core/dao/ApplicationDAO.java

@@ -22,6 +22,7 @@ import io.entgra.device.mgt.core.application.mgt.common.dto.ApplicationDTO;
 import io.entgra.device.mgt.core.application.mgt.common.dto.CategoryDTO;
 import io.entgra.device.mgt.core.application.mgt.common.dto.TagDTO;
 import io.entgra.device.mgt.core.application.mgt.core.exception.ApplicationManagementDAOException;
+import io.entgra.device.mgt.core.device.mgt.common.PaginationRequest;
 
 import java.util.List;
 
@@ -158,7 +159,7 @@ public interface ApplicationDAO {
      * @return the application
      * @throws ApplicationManagementDAOException ApplicationDTO Management DAO Exception.
      */
-    List<ApplicationDTO> getSubscribedAppsOfDevice(int deviceId, int tenantId) throws ApplicationManagementDAOException;
+    List<ApplicationDTO> getSubscribedAppsOfDevice(int deviceId, int tenantId, PaginationRequest request) throws ApplicationManagementDAOException;
 
     /**
      * To get the application with the given uuid

components/application-mgt/io.entgra.device.mgt.core.application.mgt.core/src/main/java/io/entgra/device/mgt/core/application/mgt/core/dao/impl/application/GenericApplicationDAOImpl.java

@@ -22,6 +22,7 @@ import io.entgra.device.mgt.core.application.mgt.core.dao.impl.AbstractDAOImpl;
 import io.entgra.device.mgt.core.application.mgt.core.exception.UnexpectedServerErrorException;
 import io.entgra.device.mgt.core.application.mgt.core.util.Constants;
 import io.entgra.device.mgt.core.application.mgt.core.util.DAOUtil;
+import io.entgra.device.mgt.core.device.mgt.common.PaginationRequest;
 import org.apache.commons.lang.StringUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -657,7 +658,7 @@ public class GenericApplicationDAOImpl extends AbstractDAOImpl implements Applic
     }
 
     @Override
-    public  List<ApplicationDTO> getSubscribedAppsOfDevice(int deviceId, int tenantId) throws
+    public  List<ApplicationDTO> getSubscribedAppsOfDevice(int deviceId, int tenantId, PaginationRequest request) throws
             ApplicationManagementDAOException {
         if (log.isDebugEnabled()) {
             log.debug("Getting all installed apps of device " + deviceId
@@ -700,11 +701,19 @@ public class GenericApplicationDAOImpl extends AbstractDAOImpl implements Applic
                 + "WHERE AP_DEVICE_SUBSCRIPTION.DM_DEVICE_ID = ? AND AP_DEVICE_SUBSCRIPTION.TENANT_ID= ? "
                 +"AND AP_DEVICE_SUBSCRIPTION.STATUS= 'COMPLETED'";
 
+        if (request != null)  {
+            sql = sql + " LIMIT ?,?";
+        }
+
         try {
             Connection conn = this.getDBConnection();
             try (PreparedStatement stmt = conn.prepareStatement(sql)) {
                 stmt.setInt(1, deviceId);
                 stmt.setInt(2, tenantId);
+                if (request != null)  {
+                    stmt.setInt(3, request.getStartIndex());
+                    stmt.setInt(4, request.getRowCount());
+                }
                 try (ResultSet rs = stmt.executeQuery()) {
                     appList = new ArrayList<>();
                     while (rs.next()) {

components/application-mgt/io.entgra.device.mgt.core.application.mgt.core/src/main/java/io/entgra/device/mgt/core/application/mgt/core/impl/ApplicationManagerImpl.java

@@ -22,6 +22,7 @@ import io.entgra.device.mgt.core.application.mgt.core.exception.BadRequestExcept
 import io.entgra.device.mgt.core.device.mgt.common.Base64File;
 import io.entgra.device.mgt.core.application.mgt.core.dao.SPApplicationDAO;
 import io.entgra.device.mgt.core.application.mgt.core.util.ApplicationManagementUtil;
+import io.entgra.device.mgt.core.device.mgt.common.PaginationRequest;
 import io.entgra.device.mgt.core.device.mgt.common.exceptions.MetadataManagementException;
 import io.entgra.device.mgt.core.device.mgt.common.metadata.mgt.Metadata;
 import org.apache.commons.codec.digest.DigestUtils;
@@ -1445,19 +1446,27 @@ public class ApplicationManagerImpl implements ApplicationManager {
     }
 
     @Override
-    public  ApplicationList getSubscribedAppsOfDevice(int deviceId) throws ApplicationManagementException {
+    public  ApplicationList getSubscribedAppsOfDevice(int deviceId, PaginationRequest request) throws ApplicationManagementException {
         ApplicationList applicationList = new ApplicationList();
         List<Application> applications = new ArrayList<>();
         int tenantId = PrivilegedCarbonContext.getThreadLocalCarbonContext().getTenantId(true);
         try {
             ConnectionManagerUtil.openDBConnection();
-            List<ApplicationDTO>  applicationDTOS = this.applicationDAO.getSubscribedAppsOfDevice(deviceId, tenantId);
+            List<ApplicationDTO>  applicationDTOS = this.applicationDAO.getSubscribedAppsOfDevice(deviceId, tenantId, request);
             for (ApplicationDTO applicationDTO: applicationDTOS) {
                 applicationDTO.setTags(this.applicationDAO.getAppTags(applicationDTO.getId(), tenantId));
                 applicationDTO.setAppCategories(this.applicationDAO.getAppCategories(applicationDTO.getId(), tenantId));
                 applications.add(APIUtil.appDtoToAppResponse(applicationDTO));
             }
+
+            List<ApplicationDTO>  totalApplications = this.applicationDAO.getSubscribedAppsOfDevice(deviceId, tenantId, null);
+            Pagination pagination = new Pagination();
+            pagination.setCount(totalApplications.size());
+            pagination.setSize(applications.size());
+            pagination.setOffset(request.getStartIndex());
+            pagination.setLimit(request.getRowCount());
             applicationList.setApplications(applications);
+            applicationList.setPagination(pagination);
             return applicationList;
         } catch (ApplicationManagementDAOException e) {
             String msg = "Error occurred when getting installed apps of device with device id: "