HierarchicalGrouping (#153)

Goals
Complete hierarchical grouping task
https://roadmap.entgra.net/issues/9528 and https://roadmap.entgra.net/issues/9529

Approach
Fix the encountered issues

Co-authored-by: ThilinaPremachandra <thilina@entgra.io>
Co-authored-by: Pahansith Gunathilake <pahansith@entgra.io>
Reviewed-on: community/device-mgt-core#153
Co-authored-by: Thilina Sandaruwan <thilina@entgra.io>
Co-committed-by: Thilina Sandaruwan <thilina@entgra.io>

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

@@ -212,6 +212,19 @@ public interface GroupDAO {
      */
     List<DeviceGroup> getGroups(GroupPaginationRequest paginationRequest, int tenantId) throws GroupManagementDAOException;
 
+    /**
+     * Get paginated list of Device Groups in tenant with specified device group ids.
+     *
+     * @param paginationRequest to filter results.
+     * @param deviceGroupIds    of groups required.
+     * @param tenantId          of user's tenant.
+     * @param isWithParentPath      of user's ParentPath.
+     * @return List of all Device Groups in tenant.
+     * @throws GroupManagementDAOException
+     */
+    List<DeviceGroup> getGroups(GroupPaginationRequest paginationRequest, List<Integer> deviceGroupIds,
+                                int tenantId, boolean isWithParentPath) throws GroupManagementDAOException;
+
     /**
      * Get paginated list of Device Groups in tenant with specified device group ids.
      *

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

@@ -169,6 +169,73 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
             throw new GroupManagementDAOException(msg, e);
         }
     }
+    @Override
+    public List<DeviceGroup> getGroups(GroupPaginationRequest request, List<Integer> deviceGroupIds,
+                                       int tenantId, boolean isWithParentPath) throws GroupManagementDAOException {
+        int deviceGroupIdsCount = deviceGroupIds.size();
+        if (deviceGroupIdsCount == 0) {
+            return new ArrayList<>();
+        }
+
+        try {
+            Connection conn = GroupManagementDAOFactory.getConnection();
+            String sql = "SELECT ID, DESCRIPTION, GROUP_NAME, OWNER, STATUS, PARENT_PATH, PARENT_GROUP_ID FROM DM_GROUP WHERE TENANT_ID = ?";
+            if (StringUtils.isNotBlank(request.getGroupName())) {
+                sql += " AND GROUP_NAME LIKE ?";
+            }
+            if (StringUtils.isNotBlank(request.getOwner())) {
+                sql += " AND OWNER LIKE ?";
+            }
+            if (StringUtils.isNotBlank(request.getParentPath())) {
+                if(isWithParentPath){
+                    sql += " AND PARENT_PATH LIKE ?";
+                }
+            }
+            sql += " AND ID IN (";
+            for (int i = 0; i < deviceGroupIdsCount; i++) {
+                sql += (deviceGroupIdsCount - 1 != i) ? "?," : "?";
+            }
+            sql += ")";
+            if (request.getRowCount() != 0) {
+                sql += " LIMIT ? OFFSET ?";
+            }
+
+            try (PreparedStatement stmt = conn.prepareStatement(sql)) {
+                int paramIndex = 1;
+                stmt.setInt(paramIndex++, tenantId);
+                if (StringUtils.isNotBlank(request.getGroupName())) {
+                    stmt.setString(paramIndex++, request.getGroupName() + "%");
+                }
+                if (StringUtils.isNotBlank(request.getOwner())) {
+                    stmt.setString(paramIndex++, request.getOwner() + "%");
+                }
+                if (StringUtils.isNotBlank(request.getParentPath())) {
+                    if(isWithParentPath){
+                        stmt.setString(paramIndex++, request.getParentPath());
+                    }
+                }
+                for (Integer deviceGroupId : deviceGroupIds) {
+                    stmt.setInt(paramIndex++, deviceGroupId);
+                }
+                if (request.getRowCount() != 0) {
+                    stmt.setInt(paramIndex++, request.getRowCount());
+                    stmt.setInt(paramIndex, request.getStartIndex());
+                }
+                List<DeviceGroup> deviceGroupList = new ArrayList<>();
+                try (ResultSet resultSet = stmt.executeQuery()) {
+                    while (resultSet.next()) {
+                        deviceGroupList.add(GroupManagementDAOUtil.loadGroup(resultSet));
+                    }
+                }
+                return deviceGroupList;
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while retrieving groups of groups IDs " + deviceGroupIds.toString()
+                    +  " in tenant: " + tenantId;
+            log.error(msg);
+            throw new GroupManagementDAOException(msg, e);
+        }
+    }
 
     @Override
     public int addGroup(DeviceGroup deviceGroup, int tenantId) throws GroupManagementDAOException {
@@ -376,7 +443,7 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
         try {
             Connection conn = GroupManagementDAOFactory.getConnection();
             String sql = "UPDATE DM_GROUP SET DESCRIPTION = ?, GROUP_NAME = ?, OWNER = ?, STATUS = ?, "
-                    + "PARENT_PATH = ? WHERE ID = ? AND TENANT_ID = ?";
+                    + "PARENT_PATH = ?, PARENT_GROUP_ID = ? WHERE ID = ? AND TENANT_ID = ?";
             try (PreparedStatement stmt = conn.prepareStatement(sql)){
                 for (DeviceGroup deviceGroup : deviceGroups) {
                     stmt.setString(1, deviceGroup.getDescription());
@@ -384,8 +451,9 @@ public abstract class AbstractGroupDAOImpl implements GroupDAO {
                     stmt.setString(3, deviceGroup.getOwner());
                     stmt.setString(4, deviceGroup.getStatus());
                     stmt.setString(5, deviceGroup.getParentPath());
-                    stmt.setInt(6, deviceGroup.getGroupId());
-                    stmt.setInt(7, tenantId);
+                    stmt.setInt(6, deviceGroup.getParentGroupId());
+                    stmt.setInt(7, deviceGroup.getGroupId());
+                    stmt.setInt(8, tenantId);
                     stmt.addBatch();
                 }
                 stmt.executeBatch();

components/device-mgt/io.entgra.device.mgt.core.device.mgt.core/src/main/java/io/entgra/device/mgt/core/device/mgt/core/service/GroupManagementProviderServiceImpl.java

@@ -312,6 +312,13 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
                             newParentPath = DeviceGroupConstants.HierarchicalGroup.SEPERATOR;
                         }
                         childrenGroup.setParentPath(newParentPath);
+                        if (!newParentPath.equals(DeviceGroupConstants.HierarchicalGroup.SEPERATOR)) {
+                            String[] groupIds = newParentPath.split(DeviceGroupConstants.HierarchicalGroup.SEPERATOR);
+                            int latestGroupId = Integer.parseInt(groupIds[groupIds.length - 1]);
+                            childrenGroup.setParentGroupId(latestGroupId);
+                        } else {
+                            childrenGroup.setParentGroupId(0);
+                        }
                     }
                 }
             }
@@ -527,6 +534,7 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
         if (log.isDebugEnabled()) {
             log.debug("Get groups with hierarchy " + request.toString());
         }
+        boolean isWithParentPath = false;
         DeviceManagerUtil.validateGroupListPageSize(request);
         List<DeviceGroup> rootGroups;
         try {
@@ -538,7 +546,7 @@ public class GroupManagementProviderServiceImpl implements GroupManagementProvid
             } else {
                 List<Integer> allDeviceGroupIdsOfUser = getGroupIds(username);
                 GroupManagementDAOFactory.openConnection();
-                rootGroups = this.groupDAO.getGroups(request, allDeviceGroupIdsOfUser, tenantId);
+                rootGroups = this.groupDAO.getGroups(request, allDeviceGroupIdsOfUser, tenantId, isWithParentPath);
             }
             String parentPath;
             List<DeviceGroup> childrenGroups;