public Device getDevice(String iotDeviceId) throws DigitalDisplayDeviceMgtPluginException {
Connection conn = null;
PreparedStatement stmt = null;
Device device = null;
ResultSet resultSet = null;
try {
conn = DigitalDisplayDAO.getConnection();
String selectDBQuery =
"SELECT DIGITAL_DISPLAY_DEVICE_ID, DEVICE_NAME"
+ " FROM DIGITAL_DISPLAY_DEVICE WHERE DIGITAL_DISPLAY_DEVICE_ID = ?";
stmt = conn.prepareStatement(selectDBQuery);
stmt.setString(1, iotDeviceId);
resultSet = stmt.executeQuery();
if (resultSet.next()) {
device = new Device();
device.setName(resultSet.getString(DigitalDisplayConstants.DEVICE_PLUGIN_DEVICE_NAME));
if (log.isDebugEnabled()) {
log.debug(
"Digital Display device "
+ iotDeviceId
+ " data has been fetched from "
+ "Digital Display database.");
}
}
} catch (SQLException e) {
String msg = "Error occurred while fetching Digital Display device : '" + iotDeviceId + "'";
log.error(msg, e);
throw new DigitalDisplayDeviceMgtPluginException(msg, e);
} finally {
DigitalDisplayUtils.cleanupResources(stmt, resultSet);
DigitalDisplayDAO.closeConnection();
}
return device;
}
public List<Device> getAllDevices() throws DigitalDisplayDeviceMgtPluginException {
Connection conn = null;
PreparedStatement stmt = null;
ResultSet resultSet = null;
Device iotDevice;
List<Device> iotDevices = new ArrayList<Device>();
try {
conn = DigitalDisplayDAO.getConnection();
String selectDBQuery =
"SELECT DIGITAL_DISPLAY_DEVICE_ID, DEVICE_NAME FROM DIGITAL_DISPLAY_DEVICE";
stmt = conn.prepareStatement(selectDBQuery);
resultSet = stmt.executeQuery();
while (resultSet.next()) {
iotDevice = new Device();
iotDevice.setDeviceIdentifier(
resultSet.getString(DigitalDisplayConstants.DEVICE_PLUGIN_DEVICE_ID));
iotDevice.setName(resultSet.getString(DigitalDisplayConstants.DEVICE_PLUGIN_DEVICE_NAME));
iotDevices.add(iotDevice);
}
if (log.isDebugEnabled()) {
log.debug("All Digital Display device details have fetched from Digital Display database.");
}
return iotDevices;
} catch (SQLException e) {
String msg = "Error occurred while fetching all Digital Display device data'";
log.error(msg, e);
throw new DigitalDisplayDeviceMgtPluginException(msg, e);
} finally {
DigitalDisplayUtils.cleanupResources(stmt, resultSet);
DigitalDisplayDAO.closeConnection();
}
}
public boolean addDevice(Device device) throws DigitalDisplayDeviceMgtPluginException {
boolean status = false;
Connection conn = null;
PreparedStatement stmt = null;
try {
conn = DigitalDisplayDAO.getConnection();
String createDBQuery =
"INSERT INTO DIGITAL_DISPLAY_DEVICE(DIGITAL_DISPLAY_DEVICE_ID, DEVICE_NAME) VALUES (?, ?)";
stmt = conn.prepareStatement(createDBQuery);
stmt.setString(1, device.getDeviceIdentifier());
stmt.setString(2, device.getName());
int rows = stmt.executeUpdate();
if (rows > 0) {
status = true;
if (log.isDebugEnabled()) {
log.debug(
"Digital Display device "
+ device.getDeviceIdentifier()
+ " data has been"
+ " added to the Digital Display database.");
}
}
} catch (SQLException e) {
String msg =
"Error occurred while adding the Digital Display device '"
+ device.getDeviceIdentifier()
+ "' to the Digital Display db.";
log.error(msg, e);
throw new DigitalDisplayDeviceMgtPluginException(msg, e);
} finally {
DigitalDisplayUtils.cleanupResources(stmt, null);
}
return status;
}
public boolean deleteDevice(String iotDeviceId) throws DigitalDisplayDeviceMgtPluginException {
boolean status = false;
Connection conn = null;
PreparedStatement stmt = null;
try {
conn = DigitalDisplayDAO.getConnection();
String deleteDBQuery =
"DELETE FROM DIGITAL_DISPLAY_DEVICE WHERE DIGITAL_DISPLAY_DEVICE_ID = ?";
stmt = conn.prepareStatement(deleteDBQuery);
stmt.setString(1, iotDeviceId);
int rows = stmt.executeUpdate();
if (rows > 0) {
status = true;
if (log.isDebugEnabled()) {
log.debug(
"Digital Display device "
+ iotDeviceId
+ " data has deleted"
+ " from the Digital Display database.");
}
}
} catch (SQLException e) {
String msg = "Error occurred while deleting Digital Display device " + iotDeviceId;
log.error(msg, e);
throw new DigitalDisplayDeviceMgtPluginException(msg, e);
} finally {
DigitalDisplayUtils.cleanupResources(stmt, null);
}
return status;
}
public boolean updateDevice(Device device) throws DigitalDisplayDeviceMgtPluginException {
boolean status = false;
Connection conn = null;
PreparedStatement stmt = null;
try {
conn = DigitalDisplayDAO.getConnection();
String updateDBQuery =
"UPDATE DIGITAL_DISPLAY_DEVICE SET DEVICE_NAME = ? WHERE DIGITAL_DISPLAY_DEVICE_ID = ?";
stmt = conn.prepareStatement(updateDBQuery);
stmt.setString(1, device.getName());
stmt.setString(2, device.getDeviceIdentifier());
int rows = stmt.executeUpdate();
if (rows > 0) {
status = true;
if (log.isDebugEnabled()) {
log.debug(
"Digital Display device "
+ device.getDeviceIdentifier()
+ " data has been"
+ " modified.");
}
}
} catch (SQLException e) {
String msg =
"Error occurred while modifying the Digital Display device '"
+ device.getDeviceIdentifier()
+ "' data.";
log.error(msg, e);
throw new DigitalDisplayDeviceMgtPluginException(msg, e);
} finally {
DigitalDisplayUtils.cleanupResources(stmt, null);
}
return status;
}