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• Clean the Code example for the abstract factory

  Hello
  I read clean Code and I do not understand something.
  On page 38, it is suggested to instead use the switch instructions, we can use the abstract factory.
  The example is the following:
  Instead:

  public Money calculatePay(Employee e)
  throws InvalidEmployeeType {
    switch (e.type) {
    case COMMISSIONED:
      return calculateCommissionedPay(e);
    case HOURLY:
      return calculateHourlyPay(e);
    case SALARIED:
      return calculateSalariedPay(e);
    default:
      throw new InvalidEmployeeType(e.type);
    }
  }

  We can do this:

  public abstract class Employee {
    public abstract boolean isPayday();
    public abstract Money calculatePay();
    public abstract void deliverPay(Money pay);
  }
  -----------------
  public interface EmployeeFactory {
    public Employee makeEmployee(EmployeeRecord r) throws InvalidEmployeeType;
  }
  -----------------
  public class EmployeeFactoryImpl implements EmployeeFactory {
    public Employee makeEmployee(EmployeeRecord r) throws InvalidEmployeeType {
      switch (r.type) {
       case COMMISSIONED:
          return new CommissionedEmployee(r) ;
       case HOURLY:
          return new HourlyEmployee(r);
       case SALARIED:
          return new SalariedEmploye(r);
       default:
          throw new InvalidEmployeeType(r.type);
       }
    }
  }

  I don't see why the plant is necessary here. (I know not much make abstract and I am a beginner)
  The abstract class used with his methods wouldn't be enough? Subclasses (CommissionedEmployee, HourlyEmployee,...) are implemented methods that can be called when necessary. Instead of calculatePay (myEmployee), we call myEmployee.calculatePay (). Doesn't it all? So I don't know why the plant is located in this example.
  
  Thanks in advance for any help on this!
  
  lemonboston

  lemonboston wrote:
  Subclasses (CommissionedEmployee, HourlyEmployee,...) are implemented methods that can be called when necessary. Instead of calculatePay (myEmployee), we call myEmployee.calculatePay (). Doesn't it all?

  Well, Yes, that's all. Almost everything is. You're right, you call

  myEmployee.calculatePay()
  

  where "myEmployee" is an object of the appropriate subclass. But whence this object? At some point, you must have had a line that says

  Employee myEmployee = new SalariedEmployee()
  

  or something along that line. But how did you know to create a SalariedEmployee object and not a HourlyEmployee object? It must have been a few if statements going on there. And here comes the factory: you pass a token representing the employee at the factory (a type code of employee of a character, an employee number that it will search in a database, or something else) and the factory returns a derived object of this token.

• Need code examples for the use of the PL/SQL and popup areas

  Hi all
  
  I looked at the documentation, but it does not explain how to use it.
  I need to create a region using PL/SQL to retrieve data from the tables and print it on a plain HTML page/region I use APEX 4.0.2 and DB Oracle 11i
  
  Thank you!

  Hello

  You can do like this:

  DECLARE
  NUMBER OF V_SAL;
  BEGIN

  SELECT NVL (SUM (salary), 0)
  To emp_sal WHERE the emp_id =: P170_emp_id
  IN V_SAL;

  HTP.p (')

  
  
  
  
  
  

  Salary
  '|| LTRIM (TO_CHAR (NVL(V_SAL,0), 'FML999G999G999G999G990D00')) | »

  ');
  END;

• Windows XP keep getting an error code 0xD59 for the Service Pack to update KB2463332 & will not update?

  I get an error code 0xD59 for the update of Service Pack KB2463332?  Then he wants to resart my computer for an update failed?  Why?

  Hello

  
  Click on the below mentioned link to manually install the update on your computer.
  
  Microsoft SQL Server 2005 Express Edition Service Pack 4 for Windows XP.
  http://www.Microsoft.com/en-US/Download/details.aspx?ID=184
  After you install the update, restart your computer and check if the problem is resolved.

• Whenever I try to update the 6 CS Master Collection that I encounter the error Code: U43M1D207 for the following applications: Prelude CS6 1.0.2 updated; Adobe SpeedGrade CS6 6.0.4 update; and Adobe Audition CS6.

  Whenever I try to update the 6 CS Master Collection that I encounter the error Code: U43M1D207 for the following applications: Prelude CS6 1.0.2 updated; Adobe SpeedGrade CS6 6.0.4 update; and Adobe Audition CS6.

  your download has been altered.  You may need to use another connection.

  Error in downloading, installing or updating Adobe Creative Cloud applications

• Code example for single asynchronous reading of multiple waveforms

  Hello

  I looked around but have not been able to find the code example for single asynchronous reading of multiple waveforms.  Could someone point me in the right direction?

  Thank you

  Dale

  Hi Dale,

  Have you looked at the code using .NET Framework DAQmx example? It shows this code:

  class DAQmxAsyncRead
  {
  private AnalogSingleChannelReader reader = null;

  public DAQmxAsyncRead (task t)
  {
  Create the drive
  Reader = new AnalogSingleChannelReader (t.Stream);
  Acquire 100 samples
  Handful of IAsyncResult = reader. BeginReadMultiSample (100, New AsyncCallback (OnDataReady), null);
  }

  Public Sub OnDataReady (IAsyncResult i)
  {
  Recover data that has been read.
  At this point, all that occurred during the asynchronous read exceptions are thrown
  Double data = reader. EndReadMultiSample (i);

  You can call the method BeginReadMultiSample here once again
  }
  }

  In addition, this article: http://digital.ni.com/public.nsf/allkb/485201B647950BF886257537006CEB89?OpenDocument talk about different causes of the reserved resource error.

  Kind regards

  Alexandra Valiton

• Need information about the data included in the example for the inner race with flaws

  Hello

  There are several examples for fault detection in bearing (Vibration tool sets). I need more information about these data include:

  -Bringing its specifications

  -How to perform data acquisition

  -a link to the tutorial

  I came across this manual that shows how to use OATS envelope detection VI to perform detection of failures of bearings.

  http://zone.NI.com/reference/en-XX/help/372416A-01/svtconcepts/cst_speed_brg/

  It lists the specifications of turnover:

  • Inch diameter 0,2813
  
  
  • Primitive diameter: 1,1228 inch
  
  
  • Speed: 1 234 RPM

  It also goes to the list of characteristic frequencies determined by these attributes.

  The data acquisition is carried out by the use of an accelerometer and a tachometer. These devices measure the vibration and the rotation speed of the bearing data. Failure detection uses a method called detection of the envelope to look at the signals of the bearing and compared to signals of standard bearings to the discovery of flaws. You can learn more about the method of acquisition of data here:

  http://zone.NI.com/reference/en-XX/help/372416A-01/svtconcepts/fault_detection/#Envelope_Detection

  The first link is a tutorial on the detection of failures in the bearings. The end of the link provides the location of an example VI that may also be useful.

• Error code 8007663 for the update KB2539530... Help, please

  For the last 3 months or so, 1 update has been problematic.

  This update is "Update for Microsoft Office System 2007 (KB2539530)".  It starts by creating a restore point and then stops and says "some updates were not installed" "error found: Code 80070663 Windows Update encountered an unknown error."
  I don't know where to go for more information about this, but after a few clicking, everything he tells me it is that the installation failed.
  Any help would be great.
  Thank you

  Hi Toby,

  Unfortunately, if you don't have the disks it is not much more we can do to fix this.

• error code 646 for the updates of Microsoft office

  error code 646 for Microsoft office updates KB949710, KB951550, KB973593, KB950130, KB951944, KB973704, KB974561. Help, please

  Try this for your error Code 646 and read ALL the messages/solutions to your problem on the link below:

  http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/f3390e74-9961-4AAE-8a05-554c1a9cf1a2

  Read the info on the above link to error Code 646.

  With the compliments of: David_O - Support Engineer

  This problem occurs when the agent Windows Update Wups2.dll file is incorrectly registered in the registry. Because registry files that correspond to the Wups2.dll file are missing, update facilities have failed. There are two methods to resolve this issue, use method 1 first, and if it did not resolve your issue, go to method 2

  Method 1: Save the Windows Update files

  1. click Start and type notepad in the box start the search .

  2. click on Notepad in the programs list.

  3. copy the following commands, and then paste them into the opened Notepad window:

  REGSVR32 WUPS2. DLL/S
  REGSVR32 STINKS. DLL/S
  REGSVR32 WUAUENG. DLL/S
  REGSVR32 WUAPI. DLL/S
  REGSVR32 WUCLTUX. DLL/S
  REGSVR32 WUWEBV. DLL/S
  REGSVR32 JSCRIPT. DLL/S
  REGSVR32 MSXML3. DLL/S

  1. in Notepad, on the file menu, click on record under.

  2. in the list record under , click all files.

  3. in the file name box, type register.bat.

  4. save the Register.bat file to your desktop.

  5 right-click the Register.bat file, and then click run as administrator. Reduce this includes this imageIf you are prompted for an administrator password or a confirmation, type the password or click continue.

  6. try to install the updates again.

  Method 2: Download and install Windows Update agent

  For more information about how to download and install the latest Windows Update agent, click on the number below to view the article in the Microsoft Knowledge Base:

  949104

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  If the above does not help:

  You will get the best help for any problem of Update/Service Pack update Vista Forum; the link below:

  http://social.answers.Microsoft.com/forums/en-us/vistawu/threads

  When you repost here, kindly include this error Code, and exactly what is happening when you try to update.

  In this way, you will receive the best help.

  See you soon

  Mick Murphy - Microsoft partner

• The unnecessary use of synchronize in code example in the Dev Guide

  I ask this question with some trepidation, I'm sure someone out there will be able to explain it and then I'll feel really stupid asking.  But that's...

  Using a HTTP connection code sample in the developer's Guide (I checked 4.3 and 4.5, and it's the same in these two levels), use synchronized in two places that I don't understand.

  (1) getUrl() - Code follows

  /**
  * Retrieve the URL. The synchronized keyword ensures that one
  * thread at a time can call this method on a ConnectionThread object.
  */
  public synchronized String getUrl() {}
  Return _theUrl;
  }

  I understand the comment, and it is sometimes useful force methods you want to synchronize.  But not this method in vessel closed.  If anything, there are more cases of use of this mechanism for the recovery method in this code.

  (2) around of the fetch block - following Code:

  / * Make sure that pull requests are not missed
  * While the received data is processed.
  */
  {Synchronized (this)}
  Open the connection

  When I see a synchronization block like that, I guess it's a little shared code that can be executed by multiple threads, which this clearly isn't.  So why is it synchronized?

  In fact, I think that 'design' is a testament to this example may be imperfect.  I think it would be better to have a new Thread for each connection, or have a queue (synchronized) URL addressing.

  As evidenced by another thread on this forum, the developers make these samples as Gospel and try to use them.  So if this is wrong, perhaps we could fix.  But maybe it just me being a lumberjack full.  Wouldn't be the first time...  And won't be the last!

  It seems that this example has been designed with a base defense to the following (if no synchronization) scenario:

  Event thread request _start = true.

  Threaded starts the connection.

  Event thread again pray _start = true.

  Threaded end connection, defines _start = false.

  Net result: the second event thread request is not met.

  That being said, the guys are right: this design is mediocre at best.  In the scenario above, the second request of event thread is blocked while the thread of the connection ends... and as everyone knows at this point, blocking the event thread usually leads to a world of pain.  There are certainly better approaches that can be used here, and probably the easiest way to this problem is just to have the best control flow, such as not allowing not a new connection request while one is already underway.  Certainly the synchronization adds excessive complexity to this problem and distracts from what the sample is trying to demonstrate: a simple HTTP connection.

  For this example, and the extraction, I will recommend to the authors that both be reviewed and be a structure such that these samples are as simple as possible.  Thanks to Peter marchywka for their suggestions.  Comments like yours, it's how we identify areas for improvement.

• What an example for the graphics?

  I am trying to create a plug-in that samples the frame under composition and displays information on this subject in another window in a graphical form.

  (Something in the sense of the Test Gear of the synthesis of opening, but much more simple.)

  Is this possible in a plug-in? Or what I need to do another way?

  From what I can work on the SDK Guide software, plug-ins are normally used to change the composition and not to view the output in another window.

  Any ideas?

  Hello antony.

  Yes, it can be done.

  There are two types of plugins in AE.

  There are 'effects', which are applied to layers and are used to treat the image or sound.

  and there is "AEGPs" which are plug-ins generals who can create new operational capabilities to the EA, such as adding commands to menu, or new palettes.

  You must base your plug-in on the sample of 'panelator '. (a CEAP)

  It creates a dockable panel (a bit like the palette of information), in which you can draw what you want.

  who will solve the display part.

  now, you need get the image to be processed.

  There are several ways for a CEAP to do.

  1 take a look at the example of "EMP".

  It is a model of external monitor preview plug-ins.

  the MyBlit() function is where AE offers the image of the currently displayed buffer model for the plug-in.

  (notice that it is registered in the entryPoint() function)

  2. you could say AE to render an element of project (including the comps) and give you the resulting image.

  If you ask a framework that already has the AE rendering, if all goes well it will be give you a cached copy and not a new rendering of the thing.

  Here is a list of features that might be useful:

  AEGP_GetMostRecentlyUsedComp

  AEGP_RenderAndCheckoutFrame

  AEGP_GetReceiptWorld

  so depending on what you're trying to do, any combination of these two techniques should suite your needs.

  :-)

• Same code compiled for the cRIO-9074, but reports no diagram component calendar violation for cRIO-9067

  Hi, just got my new cRIO-9067. I have converted my project over the cRIO-9067 since the cRIO 9074. Same layout module, same engine, same scan code custom fpga, (hybrid mode).  I have no problem of compilation for the 9074, which is a lower performance FPGA architecting the 9067 FPGA.

  The final timetable for windows compilation shows that the timing is respected for all clocks - 40, 80 and 120 MHz (I use a clock derived for some code sctl). During the end of compilation, during the phase of gen bitfile, I get the dreaded time violation. Investigation of the breach indicates that it is not the custom code, it is not schema components. One of them seems to be linked to the card series OR 9870 I in the chassis.

  Why? Is there anything I can try with the compiler directives for this problem? You would think that it would be easier to compile for the highest performance FPGAS...

  OK, don't ask me how I thought this output - to run I changed nothing else than this: feed the I/O node a reference FPGA of e/s instead of configure the node via the menu "link to. It makes no sense, but the compilation succeeded when I did this.

  I know it is because I created a very simple test VI in my project and made sure it does not compile without it.

• Module NI 9214 and cRIO, where is the example for the scan Mode

  Hello

  I'm new to programming of cRIO. I'll use a cRIO 9022 with different modules, such as 9214, Labview 2010.

  However, when I go to the examples, I can't load the get started scan for 9214 module Mode, it says that I have to reinstall. I don't know what examples are not installed, as I reinstalled my software already once and I could not find any change. Anyong can tell me where I can find this example, so I'll try to find more easily the example and install it.

  Thank you very much

  See you soon,.

  Antonio

  Hi Antonio,.

  I recorded the example mentioned to be compatible with 10.0 using the function 'Save for the previous version' of LabVIEW and attached the new document below. Please let me know if it works.

  The course will be very useful if you want to use it much in the future. Real time quotes are most relevant to develop on CompactRIO and the FPGA course will be very useful if you plan to use the FPGA in your applications. Do you have a course of training before sitting?

  Thank you

• How to produce a drop-down list simple code description for the OPS?

  I'm sorry this is a basic question, but I tried for days, and I see nowhere else to find an answer.
  
  I need a simple drop-down list, not a search. Here is the list account 10 or if items. It is based on a view that contains a code value, and a description. I want that all the descriptions to be available at all times. Just click on the arrow, and the entire list is displayed. When the user selects an entry, the code associated with the discription fills a related attribute.
  
  Can someone please tell me how I can produce such a simple thing, or point me to the documentation?
  
  Thank you.

  Hello

  not sure OFA's lists-driven model, but it's how solve you that problem in the ADF. For OAF related issues, please see the OA framework

  Frank

• Windows cannot load the driver for this hardware device because a previous instance of the device driver is still in memory. (Code 38) FOR the CD-ROM/DVD-road DRIVE

  I just downloaded iTunes and now my = CD-ROM/DVD-ROM Drive does not work on my Compaq laptop. This is the error that he sees when I go to Device Manager. I need this problem as soon as POSSIBLE, I work on websites and I can't go without my CD burner. Anyone who can help help please. I'm panicking right now.

  Thank you

  Hello

  Use system restore to before that you installed iTunes when the drive was working.

  How to make a Vista system restore
  http://www.Vistax64.com/tutorials/76905-System-Restore-how.html
  ======================================================

  If necessary:

  Step 1: Please do all the same underneath if you did some before as is often total
  a process that solves the problem.

  Try this - Panel - Device Manager - CD/DVD - double click on the device - driver tab.
  Click on update drivers (this will probably do nothing) - RIGHT click ON the drive - uninstall.
  RESTART this will refresh the default driver stack. Even if the reader does not appear to continue
  below.
  
  Then, work your way through these - don't forget the drive might be bad, could be a coward
  cable or slight corrosion on the contacts (usually for a laptop) and other issues.

  Your CD or DVD drive is missing or is not recognized by Windows or other programs
  http://support.microsoft.com/kb/314060 - a Mr Fixit

  Try this fix manually if the Fixit 314060 does not work
  http://www.pchell.com/hardware/cd_drive_error_code_39.shtml

  Your CD or DVD drive is missing or is not recognized by Windows or other programs-
  a Mr Fixit
  http://support.Microsoft.com/kb/982116

  The CD drive or the DVD drive does not work as expected on a computer that you upgraded to
  for Windows Vista
  http://support.Microsoft.com/kb/929461

  When you insert a CD or a DVD, Windows Vista may not recognize the disc
  http://support.Microsoft.com/kb/939052

  Your CD or DVD drive cannot read or write media - A Mr Fixit
  http://support.Microsoft.com/GP/cd_dvd_drive_problems

  CD/DVD drive does not appear in Windows Vista, or you receive this error in Windows
  Vista installation after booting from the DVD (AHCI)
  http://support.Microsoft.com/kb/952951
  Drive CD - R or CD - RW Drive is not recognized as a recordable device
  http://support.Microsoft.com/kb/316529/

  Hardware devices not detected or not working - A Mr Fixit
  http://support.Microsoft.com/GP/hardware_device_problems

  Another possibility is that the cables are loose. Remove ALL power, then make sure that the cables in both
  ends. Remove and replace, do not just tight. For laptops, you can often clean power and
  contacts data with a pencil eraser.

  Some DVD players do not use the Windows default drivers so check with the manufacturer of system and
  manufacturer of device to see if there is a firmware or drivers for your drive if necessary.

  ===============================

  Step 2: You have disc problems as the CD/DVD is actually 4 discs in 1 case (CD & DVD
  Burn and CD and DVD read). So it is not unusual for 1 or 2 operational so that other parts
  do it right.

  Did you follow the Troubleshooting Guide for the reader who still does not work? There are
  the entries in registry that the troubleshooter does not solve and those who "might" be the cause.

  Check with your Maker system and a device for the two possible firmware updates and
  the correct registry entries for your car.

  Here are the keys that I of course are those in question - for the subkeys of the CD/DVD drive
  as there will be other subkeys in these keys. Do not forget to ask specific keys involved as well as
  the parameters.

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\IDE

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Hardware Profiles\0001\System\CurrentControlSet\Enum\IDE

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\ {4D36E965-E325-11CE-BFC1-08002BE10318}

  -----------------------------------------------------------------------

  You can probably find more info here and maybe even the exact registry for your CD/DVD settings
  drive from someone with the same model.

  Forums - a lot of expert real help
  http://Club.myce.com/

  CD/DVD units
  http://www.myce.com/storage/

  Use DevManView to locate the CD/DVD in the registry (be careful and do a prior Restore Point)
  nothing change) - find the DevManView device and then make a right click on it free in RegEdit.

  DevManView - free - an alternative to the standard Windows Device Manager, which displays all the
  devices and their properties in flat table, instead of the tree viewer
  http://www.NirSoft.NET/utils/device_manager_view.html

  I hope this helps.

  Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.