Added a function to retrieve device list from device name

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

@@ -596,7 +596,48 @@ public class DeviceManagementServiceProviderImpl implements DeviceManagementServ
             int deviceCount = this.deviceDAO.getDeviceCount();
             return deviceCount;
         } catch (DeviceManagementDAOException e) {
-            throw new DeviceManagementException("Error occurred while obtaining devices all devices", e);
+            log.error("Error occurred while counting devices", e);
+            throw new DeviceManagementException("Error occurred while counting devices", e);
+        }
     }
+
+    @Override
+    public List<Device> getDevicesByName(String deviceName, int tenantId) throws DeviceManagementException {
+        List<Device> devicesOfUser = new ArrayList<Device>();
+        List<org.wso2.carbon.device.mgt.core.dto.Device> devicesList;
+        Device convertedDevice;
+        DeviceIdentifier deviceIdentifier;
+        DeviceManager dms;
+        Device dmsDevice;
+        org.wso2.carbon.device.mgt.core.dto.Device device;
+
+        try {
+            devicesList = this.getDeviceDAO().getDevicesByName(deviceName, tenantId);
+        } catch (DeviceManagementDAOException e) {
+            throw new DeviceManagementException("Error occurred while fetching the list of devices that matches to '"
+                                                + deviceName + "'", e);
+        }
+
+        for (int x = 0; x < devicesList.size(); x++) {
+            device = devicesList.get(x);
+            try {
+                device.setDeviceType(deviceTypeDAO.getDeviceType(device.getDeviceTypeId()));
+                dms = this.getPluginRepository().getDeviceManagementProvider(device.getDeviceType().getName());
+                convertedDevice = DeviceManagementDAOUtil.convertDevice(device, device.getDeviceType());
+                deviceIdentifier = new DeviceIdentifier();
+                deviceIdentifier.setId(device.getDeviceIdentificationId());
+                deviceIdentifier.setType(device.getDeviceType().getName());
+                dmsDevice = dms.getDevice(deviceIdentifier);
+                if (dmsDevice != null) {
+                    convertedDevice.setProperties(dmsDevice.getProperties());
+                    convertedDevice.setFeatures(dmsDevice.getFeatures());
+                }
+                devicesOfUser.add(convertedDevice);
+            } catch (DeviceManagementDAOException e) {
+                log.error("Error occurred while obtaining the device type of DeviceTypeId '" +
+                          device.getDeviceTypeId() + "'", e);
+            }
+        }
+        return devicesOfUser;
     }
 }

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

@@ -62,8 +62,18 @@ public interface DeviceDAO {
 
     /**
      * Get the count of devices
+     *
      * @return device count
      * @throws DeviceManagementDAOException
      */
     int getDeviceCount() throws DeviceManagementDAOException;
+
+    /**
+     * Get the list of devices that matches with the given device name.
+     *
+     * @param deviceName Name of the device
+     * @return List of devices that matches with the given device name.
+     * @throws DeviceManagementDAOException
+     */
+    List<Device> getDevicesByName(String deviceName , int tenantId) throws DeviceManagementDAOException;
 }

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

@@ -330,4 +330,59 @@ public class DeviceDAOImpl implements DeviceDAO {
         return deviceCount;
     }
 
+    /**
+     * Get the list of devices that matches with the given device name.
+     *
+     * @param deviceName Name of the device.
+     * @param tenantId
+     * @return device list
+     * @throws DeviceManagementDAOException
+     */
+    @Override
+    public List<Device> getDevicesByName(String deviceName, int tenantId) throws DeviceManagementDAOException {
+        Connection conn = this.getConnection();
+        PreparedStatement stmt = null;
+        List<Device> deviceList = new ArrayList<Device>();
+        try {
+            stmt = conn.prepareStatement(
+                    "SELECT DM_DEVICE_TYPE.ID, DM_DEVICE_TYPE.NAME, DM_DEVICE.ID, DM_DEVICE.DESCRIPTION, " +
+                    "DM_DEVICE.NAME, DM_DEVICE.DATE_OF_ENROLLMENT, DM_DEVICE.DATE_OF_LAST_UPDATE, " +
+                    "DM_DEVICE.OWNERSHIP, DM_DEVICE.STATUS, DM_DEVICE.DEVICE_TYPE_ID, " +
+                    "DM_DEVICE.DEVICE_IDENTIFICATION, DM_DEVICE.OWNER, DM_DEVICE.TENANT_ID FROM " +
+                    "DM_DEVICE, DM_DEVICE_TYPE WHERE DM_DEVICE.DEVICE_TYPE_ID = DM_DEVICE_TYPE.ID " +
+                    "AND DM_DEVICE.NAME LIKE %?% AND DM_DEVICE.TENANT_ID =?");
+            stmt.setString(1, deviceName);
+            stmt.setInt(2, tenantId);
+            ResultSet resultSet = stmt.executeQuery();
+
+            while (resultSet.next()) {
+                Device device = new Device();
+                DeviceType deviceType = new DeviceType();
+                int id = resultSet.getInt(resultSet.getInt(1));
+                deviceType.setId(id);
+                deviceType.setName(resultSet.getString(2));
+                device.setId(resultSet.getInt(3));
+                device.setDescription(resultSet.getString(4));
+                device.setName(resultSet.getString(5));
+                device.setDateOfEnrollment(resultSet.getLong(6));
+                device.setDateOfLastUpdate(resultSet.getLong(7));
+                //TODO:- Ownership is not a enum in DeviceDAO
+                device.setOwnerShip(resultSet.getString(8));
+                device.setStatus(Status.valueOf(resultSet.getString(9)));
+                device.setDeviceTypeId(resultSet.getInt(10));
+                device.setDeviceIdentificationId(resultSet.getString(11));
+                device.setOwnerId(resultSet.getString(12));
+                device.setTenantId(resultSet.getInt(13));
+                deviceList.add(device);
+            }
+        } catch (SQLException e) {
+            String msg = "Error occurred while fetching the list of devices that matches to '" + deviceName + "'";
+            log.error(msg, e);
+            throw new DeviceManagementDAOException(msg, e);
+        } finally {
+            DeviceManagementDAOUtil.cleanupResources(conn, stmt, null);
+        }
+        return deviceList;
+    }
+
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementService.java

@@ -73,7 +73,18 @@ public interface DeviceManagementService extends DeviceManager, LicenseManager,
     /**
      * Method to get the count of all types of devices.
      * @return device count
-     * @throws DeviceManagementException
+     * @throws DeviceManagementException If some unusual behaviour is observed while counting
+     * the devices
      */
     int getDeviceCount() throws DeviceManagementException;
+
+    /**
+     * Method to get the list of devices that matches with the given device name.
+     *
+     * @param deviceName    name of the device
+     * @return List of devices that matches with the given device name.
+     * @throws DeviceManagementException If some unusual behaviour is observed while fetching the
+     * device list
+     */
+    List<Device> getDevicesByName(String deviceName, int tenantId) throws DeviceManagementException;
 }

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementServiceImpl.java

@@ -211,4 +211,10 @@ public class DeviceManagementServiceImpl implements DeviceManagementService {
         return DeviceManagementDataHolder.getInstance().getDeviceManagementProvider()
                                     .getDeviceCount();
     }
+
+    @Override
+    public List<Device> getDevicesByName(String deviceName, int tenantId) throws DeviceManagementException {
+        return DeviceManagementDataHolder.getInstance().getDeviceManagementProvider()
+                                    .getDevicesByName(deviceName, tenantId);
+    }
 }