/**
* Utility method that returns a string which contains the stack trace of the given Exception
* object.
*/
public static String getStacktraceFromException(Throwable e) {
ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
PrintWriter writer = new PrintWriter(byteOut);
e.printStackTrace(writer);
writer.close();
String message = new String(byteOut.toByteArray());
return message;
}
@Test
public void testCopy() throws Exception {
String data = "rar";
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
InputStream inputStream = new ByteArrayInputStream(data.getBytes());
TypeHandlerUtils.copy(inputStream, outputStream);
Assert.assertEquals(data, new String(outputStream.toByteArray()));
}
@Override
public byte[] getFollowRequests(UserPublicKey owner) {
byte[] dummy = null;
FollowRequestData request = new FollowRequestData(owner, dummy);
RowData[] requests = request.select();
if (requests == null) return new byte[4];
ByteArrayOutputStream bout = new ByteArrayOutputStream();
DataOutput dout = new DataOutputStream(bout);
try {
dout.writeInt(requests.length);
for (RowData req : requests) Serialize.serialize(req.data, dout);
return bout.toByteArray();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
@Override
public void updateOperation(Operation operation) throws OperationManagementDAOException {
PreparedStatement stmt = null;
ByteArrayOutputStream bao = null;
ObjectOutputStream oos = null;
try {
super.updateOperation(operation);
Connection connection = OperationManagementDAOFactory.getConnection();
stmt =
connection.prepareStatement(
"UPDATE DM_POLICY_OPERATION O SET O.OPERATION_DETAILS=? " + "WHERE O.OPERATION_ID=?");
bao = new ByteArrayOutputStream();
oos = new ObjectOutputStream(bao);
oos.writeObject(operation);
stmt.setBytes(1, bao.toByteArray());
stmt.setInt(2, operation.getId());
stmt.executeUpdate();
} catch (SQLException e) {
throw new OperationManagementDAOException(
"Error occurred while update policy operation metadata", e);
} catch (IOException e) {
throw new OperationManagementDAOException(
"Error occurred while serializing policy operation object", e);
} finally {
if (bao != null) {
try {
bao.close();
} catch (IOException e) {
log.warn("Error occurred while closing ByteArrayOutputStream", e);
}
}
if (oos != null) {
try {
oos.close();
} catch (IOException e) {
log.warn("Error occurred while closing ObjectOutputStream", e);
}
}
OperationManagementDAOUtil.cleanupResources(stmt);
}
}
@Override
public byte[] getAllUsernamesGzip() throws IOException {
try (PreparedStatement stmt = conn.prepareStatement("select name from users")) {
ResultSet rs = stmt.executeQuery();
List<String> list = new ArrayList<>();
while (rs.next()) {
String username = rs.getString("name");
list.add(username);
}
ByteArrayOutputStream bout = new ByteArrayOutputStream();
try (DataOutputStream dout = new DataOutputStream(new GZIPOutputStream(bout))) {
for (String uname : list) Serialize.serialize(uname, dout);
}
return bout.toByteArray();
} catch (SQLException sqe) {
throw new IOException(sqe);
}
}