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• Problems sending SMTP email to large systems such as Gmail

  - by Martel

  I maintain a mail server. Recently messages sent to valid recipients on gmail, yahoo, and now roadrunner email addresses are bounced with similar messages: Here's one from gmail: The message, sent by [email protected], can not be delivered to following recipient(s): *recipient*@gmail.com There was a fatal SMTP error. Fatal DNS error: exchanger alt4.gmail-smtp-in.l.google.com. does not exist Delivery History Follows: [DLVR 000020 19-12-12 14:21:21] Delivering item 5573 [DLVR 000020 19-12-12 14:21:21] Resolving MX records for domain gmail.com [DLVR 000020 19-12-12 14:21:21] Retrieved 5 MX records for domain gmail.com [DLVR 000020 19-12-12 14:21:21] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:21:33] Host gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:21:33] Will try next exchanger [DLVR 000020 19-12-12 14:21:33] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt1.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:21:45] Host alt1.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:21:45] Will try next exchanger [DLVR 000020 19-12-12 14:21:45] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt2.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:21:57] Host alt2.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:21:57] Will try next exchanger [DLVR 000020 19-12-12 14:21:57] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt3.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:22:09] Host alt3.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:22:09] Will try next exchanger [DLVR 000020 19-12-12 14:22:09] Delivering mail to 1 recipient(s) at domain gmail.com using exchanger alt4.gmail-smtp-in.l.google.com. [DLVR 000020 19-12-12 14:22:21] Host alt4.gmail-smtp-in.l.google.com. does not appear to exist... [DLVR 000020 19-12-12 14:22:21] Fatal error - host alt4.gmail-smtp-in.l.google.com. does not exist. Will bounce... [DLVR 000020 19-12-12 14:22:21] Bouncing to sender using bounce address [email protected]... Sometimes these emails get through, other times not. I'm at a loss to explain it.

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• Adding UIViews with dynamic heights iphone

  - by Andy Jacobs

  in my viewcontroller's view i need to add a couple of custom UIView's, i do that in the loadView method so in my custom uiview's drawRect method i add a couple of UILabel's. in my viewcontroller's view i need to add all those custom UIView's underneath each other but i don't know what their height is sometimes 20px, 40px, 60px, depending on the outcome of the drawRect so when i init my custom UIView i give it a frame height of lets say 50.. but when the drawRect is done and it's only 20, 50 is too much so i need to adjust the frame height but how can i determine what's the visible height of the custom UIView and where can i catch it in my viewcontroller when the custom uiview has finished his drawRect method is there some kind of autoresize and where do i catch it in my viewcontroller, so i can position the custom uiview right under neath each other.

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• MS Dynamic CRM 4.0 serviceappointment closed state javascript event

  - by Jeroen

  Hi, I need to do the following: In Crm, you have serviceappointments (serviceactivities). 1 appointment can have a state, ( like arrived, pending, closed, ... ). When i save the form (onsave event), It should catch if the form is putted closed state and then it should do something. I can get the state easily: alert(crmForm.all.statuscode.DataValue) I hanged this onto an onsave event. But when i put a serviceappointment into closed state, it first calls the onsave event with previous state and then puts it in closed state. Is it possible to catch if it's putted in closed state?

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• Deleting windows.edb and unchecking Indexing service lead to hard drive file records swapping

  - by linni

  I followed the instructions listed here:http://www.mydigitallife.info/2007/09/18/turn-off-and-disable-search-indexing-service-in-windows-xp/ to free up space on hard drive by deleting the windows.edb indexing file... I also stopped windows search service as mentioned in the comments following the article. In addition to unchecking the "Allow Indexing Service to index this disk for fast file searching" check box on the properties dialog for the C:\ drive, I did the same for two usb connected hard drives (J:\ and I:\ ). I'm not sure why I did that, thought it might shrink the windows.edb file so I wouldn't have to delete it (which sounded a bit risky in my ears at the time). The file of course didn't shrink so I ended up deleting it and freeing up over 3 GB of space, yeehaw. However, as soon as I had done this I could not access the usb connected hard drives anymore. The error I got was "I:\photos is not accessible" "The file or directory is corrupted and unreadable" when I tried to open the photos directory on I:\ Here is where I enter the twilight zone... I try disconnecting I:\ usb hard drive. But XP shows me that instead J:\ drive has disconnected and I:\ is still there. So I disconnect both drives and restart the computer. I then connect one drive, but it lists up the contents of the other drive on root level. I tried connecting the drives vice versa and the same thing happens. I try taking one of the hard drives to another computer and when I connect it there it lists up not its own contents but the contents of the other hard drive and gives the same error as above when I try and access any of the folders (even folders on the root that have the same name as folders on the other drive (e.g. J:\photos and I:\photos)??? And no, this is not a me mixing up my drive letters. Computer Manager - Disk management shows the same result as explorer: The drive size is correct (one is 500GB, the other is 640GB) but the drive name is of the opposite drive, as long as the contents. Also, one drive was full of data and the other almost empty but they incorrectly show their free space status of the other drive. Somehow the usb drives seem to have switched file tables, file records, boot records or something, extremely weird! Even weirder, if I try and create a text file or folder on this drive, it works fine, accessing them, saving, whatever, all good, but accessing any other data on the drive gives me an error. Does anyone have a clue what is going on and more importantly, how I can restore the correct folder listings to access my family photos ??? cheers, linni

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• Call methods in main method

  - by Niloo

  this is my main method that gets 3 integers from command line and I parse then in my validating method. However I have one operation method that calls 3 other methods, but i don't know what type of data and howmany I have to put in my operatinMethod() " cuase switch only gets one); AND also in my mainMethod() for calling the operationMehod(); itself? please let me know if i'm not clear? Thanx! main method: public class test { // Global Constants final static int MIN_NUMBER = 1; final static int MAX_PRIME = 10000; final static int MAX_FACTORIAL = 12; final static int MAX_LEAPYEAR = 4000; //Global Variables static int a,b,c; public static void main (String[] args) { for(int i =0; i< args.length; i++){} if(validateInput(args[0],args[1],args[2])){ performOperations(); } } //Validate User Input public static boolean validateInput(String num1,String num2,String num3){ boolean isValid = false; try{ try{ try{ a = Integer.parseInt(num1); if(!withinRange(a,MIN_NUMBER, MAX_PRIME)) { System.out.println("The entered value " + num1 +" is out of range [1 TO 10000]."); } isValid = true; } catch(Exception ex) { System.out.println("The entered value " + num1 + " is not a valid integer. Please try again."); } b = Integer.parseInt(num2); if(!withinRange(b,MIN_NUMBER, MAX_FACTORIAL)) { System.out.println("The entered value " + num2 +" is out of range [1 TO 12]."); } isValid = true; } catch(Exception ex) { System.out.println("The entered value " + num2 + " is not a valid integer. Please try again."); } c = Integer.parseInt(num3); if(!withinRange(c,MIN_NUMBER, MAX_LEAPYEAR)) { System.out.println("The entered value " + num3 +" is out of range [1 TO 4000]."); } isValid = true; } catch(Exception ex) { System.out.println("The entered value " + num3 + " is not a valid integer. Please try again."); } return isValid; } //Check the value within the specified range private static boolean withinRange(int userInput ,int min, int max){ boolean isInRange = true; if(userInput < min || userInput > max){ isInRange = false; } return isInRange; } //Perform operations private static void performOperations(int userInput) { switch(userInput) { case 1: // count Prime numbers countPrimes(a); break; case 2: // Calculate factorial getFactorial(b); break; case 3: // find Leap year isLeapYear(c); break; } } // Verify Prime Number private static boolean isPrime(int prime) { for(int i = 2; i <= Math.sqrt(prime) ; i++) { if ((prime % i) == 0) { return false; } } return true; } // Calculate Prime private static int countPrimes(int userInput){ int count =0; for(int i=userInput; i<=MAX_PRIME; i++) { if(isPrime(i)){ count++; } } System.out.println("Exactly "+ count + " prime numbers exist between "+ a + " and 10,000."); return count; } // Calculate the factorial value private static int getFactorial(int userInput){ int ans = userInput; if(userInput >1 ){ ans*= (getFactorial(userInput-1)); //System.out.println("The value of "+ b +"! is "+ getFactorial(userInput)); } return ans; } // Determine whether the integer represents a leap year private static boolean isLeapYear(int userInput){ if (userInput % 4 == 0 && userInput % 400 == 0 && userInput % 100 ==0){ System.out.println("The year "+ c +" is a leap year"); } else { System.out.println("The year "+ c +" is a not leap year"); } return false; } }

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• Inserting snippets from macros

  - by Matt

  In Visual Studio 2008 I had a macro which would insert a snippet and input today's date in one of the replacements. When I try to run this macro in VS 2010 it doesn't work. No matter how I try it will not insert a snippet. When I try the following command: DTE.ExecuteCommand("Edit.InvokeSnippetFromShortcut", "snippetName") This fails with error "Error HRESULT E_FAIL has been returned from a call to a COM component. I tried recording a new macro and when I pressed the keyboard shortcut for inserting a snippet (Ctrl+K, Ctrl+X) VS gave the error "The command Insert Snippet is not currently available." Did MS remove the ability to insert snippets from macros? If so this really is a shame because macros have functionality not found in snippets and vice versa.

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• Word 2007 - Pasted Text Not Spellchecked??

  - by synapse88

  My Word 2007 spell-check seems to work fine, except that when I paste in text from somewhere else, it won't detect any misspellings in that pasted text...no matter what I try. If it makes any difference, when I paste in text, the formatting is preserved (size color etc). Any ideas on what to try?

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• Word 2007 - Pasted Text Not Spellchecked??

  - by synapse88

  My Word 2007 spell-check seems to work fine, except that when I paste in text from somewhere else, it won't detect any misspellings in that pasted text...no matter what I try. If it makes any difference, when I paste in text, the formatting is preserved (size color etc). I've tried doing a past-special and trying the different options there, but it's still bringing the formatting over. Any ideas on what to try?

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• Connect MySQL database from Android

  - by Mistry Hardik

  hello people! well this is the code snippet i use to access the getUser.php to retrive user details from a MySQL database in my application: String result = ""; //the year data to send ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); nameValuePairs.add(new BasicNameValuePair("uid","demo")); //http post try{ HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://192.xxx.xx.xxx/getUser.php"); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); InputStream is = entity.getContent(); }catch(Exception e){ Log.e("log_tag", "Error in http connection "+e.toString()); } //convert response to string try{ InputStream is = null; BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8); StringBuilder sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } is.close(); result=sb.toString(); }catch(Exception e){ Log.e("log_tag", "Error converting result "+e.toString()); } //parse json data try{ JSONArray jArray = new JSONArray(result); for(int i=0;i<jArray.length();i++){ JSONObject json_data = jArray.getJSONObject(i); Log.i("log_tag","id: "+json_data.getInt("id")+ ", name: "+json_data.getString("fname")+ ", sex: "+json_data.getInt("sex")+ ", birthyear: "+json_data.getInt("dob") ); } } catch(JSONException e){ Log.e("log_tag", "Error parsing data "+e.toString()); } } This snippet is taken from http://helloandroid.com Everything is configured fine: the MySQL Db, IIS with FASTCGi, PHP tools and drivers. even the script below when called from browser with url: http://192.xxx.xx.x.xxx/getUser.php?uid=demo works fine, But returns error in android with java.lang.NullPointerException and org.json.JSONEXCEPTION: End of input at character 0 <?php mysql_connect("myhost","username","pwd"); mysql_select_db("mydb"); $q=mysql_query("SELECT * FROM userinfo WHERE uid ='".$_REQUEST['uid']."'"); while($e=mysql_fetch_assoc($q)) $output[]=$e; print(json_encode($output)); mysql_close(); ?> Can anybody help in this section? Regards, Mistry Hardik

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• Delphi OLE - How to avoid errors like "The requested member of the collection does not exist"?

  - by Edwin

  Hi, I'm automating Word with Delphi, but some times I got an error message: The requested member of the collection does not exist It seems that the Item member of the Styles collection class does not always exist and some times causes the above mentioned error. My workaround is to catch the exception and skip it, but is there anyway to detect it instead of using the try...except block? The problem with the try...except block is that when debugging the raised exception is annoying... My code example: var aWordDoc: _WordDocument i: Integer; ovI: OleVariant; wordStyle: Style; begin for i := 1 to aWordDoc.Styles.Count do begin ovI := i; try wordStyle := aWordDoc.Styles.Item(ovI); except Continue;//skip if any error occurred. end; //do something with wordStyle end; end

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• struts2 StringLengthFieldValidator annotation not working for empty string

  - by dcp

  Let's say I have this annotation for a struts2 validation: @StringLengthFieldValidator(key = "key14", fieldName = "poNumber", minLength = "1", maxLength = "255", message = "poNumber must be between 1 and 255 characters.") public void setPoNumber(String poNumber) { this.poNumber = poNumber; } The behavior I'm seeing is that if I pass a string that is empty to this setter, (ex. setPoNumber("")) the validator doesn't catch the error. Strings that are over 255 are caught fine. Equally strange is if I change minLength to 2 and pass a string of length 1, it will catch the error as well. But empty string does not seem to be caught when minLength = "1". For this reason, I cannot use this validator. I just wondered if I'm doing something wrong. I'm using struts 2.1.8.1. Thanks for any advice.

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• Adding a loading gif to simple script

  - by bluedaniel

  Hello everyone, Im really really new to Javascript but Ive got this script that loads the contents of a url and everything works fine. I call the plannerSpin function with an onClick method on a button but how would I go about displaying an animated gif whilst all this is going on? var xmlHttp function plannerSpin(str) { xmlHttp = GetXmlHttpObject() if (xmlHttp == null) { alert("Browser does not support HTTP Request") return } var url = "/recipes/planner/data" xmlHttp.onreadystatechange = stateChanged xmlHttp.open("GET", url, true) xmlHttp.send(null) } function stateChanged() { if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete") { document.getElementById("recipe_planner_container").innerHTML = xmlHttp.responseText } } function GetXmlHttpObject() { var xmlHttp = null; try { // Firefox, Opera 8.0+, Safari xmlHttp = new XMLHttpRequest(); } catch (e) { // Internet Explorer try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } } return xmlHttp; }

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• exchange server does not work

  - by hossam.khalili

  hi i have exchange server 2007 i try to send email this morning but its seems does not work ,so i try to restart the services but not change then i went to event viewer on system error but there's no errors can any one help me thanks

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• MSDN Example of handling an exception from the TPL - Is this a race condition?

  - by David

  I'm looking at the TPL exception handling example from MSDN @ http://msdn.microsoft.com/en-us/library/dd537614(v=VS.100).aspx The basic form of the code is: Task task1 = Task.Factory.StartNew(() => { throw new IndexOutOfRangeException(); }); try { task1.Wait(); } catch (AggregateException ae) { throw ae.Flatten(); } My question is: Is this a race condition? What happens if task1 throws before the try has executed? Am I missing something that stops this being a race? Shouldn't it be written like this instead: try { Task task1 = Task.Factory.StartNew(() => { throw new IndexOutOfRangeException(); }); task1.Wait(); } catch (AggregateException ae) { throw ae.Flatten(); }

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• o display an image

  - by Vimal Basdeo

  I want to display an image from the web to a panel in another Jframe at the click of a button but whenever I click the button first the image loads and during this time the current form potentially freezes and once the image has loaded the form is displayed with the image.. How can I avoid the situation where my form freezes since it is very irritating My codes :: My current class private void btn_TrackbusActionPerformed(java.awt.event.ActionEvent evt) { try { sendMessage("Query,map,$,start,211,Arsenal,!"); System.out.println(receiveMessage()); } catch (UnknownHostException ex) { Logger.getLogger(client_Trackbus.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(client_Trackbus.class.getName()).log(Level.SEVERE, null, ex); } catch (Exception ex) { Logger.getLogger(client_Trackbus.class.getName()).log(Level.SEVERE, null, ex); } client_trackedbus nextform=new client_trackedbus(planform,connection,packet_receive,packet_send); this.setVisible(false); this.dispose(); nextform.setVisible(true); // TODO add your handling code here: } My next class that displays the image public class client_trackedbus extends javax.swing.JFrame { client_planform planform=null; DatagramSocket connection=null; DatagramPacket packet_receive=null; DatagramPacket packet_send=null; JLabel label=null; /** Creates new form client_trackedbus */ public client_trackedbus(client_planform planform,DatagramSocket connection,DatagramPacket packet_receive,DatagramPacket packet_send) { initComponents(); this.planform=planform; this.connection=connection; this.packet_receive=packet_receive; this.packet_send=packet_send; try { displayMap("http://www.huddletogether.com/projects/lightbox2/images/image-2.jpg", jPanel1, new JLabel()); } catch (MalformedURLException ex) { Logger.getLogger(client_trackedbus.class.getName()).log(Level.SEVERE, null, ex); } } private void displayMap(String url,JPanel panel,JLabel label) throws MalformedURLException{ URL imageurl=new URL(url); Image image=(Toolkit.getDefaultToolkit().createImage(imageurl)); ImageIcon icon = new ImageIcon(image); label.setIcon(icon); panel.add(label); // System.out.println(panel.getSize().width); this.getContentPane().add(panel); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code"> private void initComponents() { jPanel1 = new javax.swing.JPanel(); jLabel1 = new javax.swing.JLabel(); btn_Exit = new javax.swing.JButton(); btn_Plan = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setTitle("Public Transport Journey Planner"); javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 368, Short.MAX_VALUE) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGap(0, 172, Short.MAX_VALUE) ); jLabel1.setFont(new java.awt.Font("Arial", 1, 18)); jLabel1.setText("Your tracked bus"); btn_Exit.setText("Exit"); btn_Exit.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btn_ExitActionPerformed(evt); } }); btn_Plan.setText("Plan journey"); btn_Plan.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btn_PlanActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(104, 104, 104) .addComponent(jLabel1)) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup(layout.createSequentialGroup() .addGap(65, 65, 65) .addComponent(btn_Plan) .addGap(65, 65, 65) .addComponent(btn_Exit, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE))) .addContainerGap(20, Short.MAX_VALUE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addGap(35, 35, 35) .addComponent(jLabel1) .addGap(18, 18, 18) .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(18, 18, 18) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(btn_Exit) .addComponent(btn_Plan)) .addContainerGap(12, Short.MAX_VALUE)) ); pack(); }// </editor-fold> private void btn_ExitActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: Exitform(); } private void btn_PlanActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: this.setVisible(false); this.dispose(); this.planform.setVisible(true); } private void Exitform(){ this.setVisible(false); this.dispose(); } /** * @param args the command line arguments */ public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { // new client_trackedbus().setVisible(true); } }); } // Variables declaration - do not modify private javax.swing.JButton btn_Exit; private javax.swing.JButton btn_Plan; private javax.swing.JLabel jLabel1; private javax.swing.JPanel jPanel1; // End of variables declaration }

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• windows 8 app store

  - by Pooja

  I have been using windows 8 for the past few days but suddenly since a couple of days am nit able to use my app store as it is facing some problem. every time i try to open it, it says that my system has to be connected to internet to use the store even though my computer is connected to the internet and it is working too please help. This is the message that is shown when i open my app store: "your PC isn't connected to the internet. To use the store connect to internet and try again"

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• Handling Exceptions for ThreadPoolExecutor

  - by HonorGod

  I have the following code snippet that basically scans through the list of task that needs to be executed and each task is then given to the executor for execution. The JobExecutor intern creates another executor (for doing db stuff...reading and writing data to queue) and completes the task. JobExecutor returns a Future for the tasks submitted. When one of the task fails, I want to gracefully interrupt all the threads and shutdown the executor by catching all the exceptions. What changes do I need to do? public class DataMovingClass { private static final AtomicInteger uniqueId = new AtomicInteger(0); private static final ThreadLocal<Integer> uniqueNumber = new IDGenerator(); ThreadPoolExecutor threadPoolExecutor = null ; private List<Source> sources = new ArrayList<Source>(); private static class IDGenerator extends ThreadLocal<Integer> { @Override public Integer get() { return uniqueId.incrementAndGet(); } } public void init(){ // load sources list } public boolean execute() { boolean succcess = true ; threadPoolExecutor = new ThreadPoolExecutor(10,10, 10, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(1024), new ThreadFactory() { public Thread newThread(Runnable r) { Thread t = new Thread(r); t.setName("DataMigration-" + uniqueNumber.get()); return t; }// End method }, new ThreadPoolExecutor.CallerRunsPolicy()); List<Future<Boolean>> result = new ArrayList<Future<Boolean>>(); for (Source source : sources) { result.add(threadPoolExecutor.submit(new JobExecutor(source))); } for (Future<Boolean> jobDone : result) { try { if (!jobDone.get(100000, TimeUnit.SECONDS) && success) { // in case of successful DbWriterClass, we don't need to change // it. success = false; } } catch (Exception ex) { // handle exceptions } } } public class JobExecutor implements Callable<Boolean> { private ThreadPoolExecutor threadPoolExecutor ; Source jobSource ; public SourceJobExecutor(Source source) { this.jobSource = source; threadPoolExecutor = new ThreadPoolExecutor(10,10,10, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(1024), new ThreadFactory() { public Thread newThread(Runnable r) { Thread t = new Thread(r); t.setName("Job Executor-" + uniqueNumber.get()); return t; }// End method }, new ThreadPoolExecutor.CallerRunsPolicy()); } public Boolean call() throws Exception { boolean status = true ; System.out.println("Starting Job = " + jobSource.getName()); try { // do the specified task ; }catch (InterruptedException intrEx) { logger.warn("InterruptedException", intrEx); status = false ; } catch(Exception e) { logger.fatal("Exception occurred while executing task "+jobSource.getName(),e); status = false ; } System.out.println("Ending Job = " + jobSource.getName()); return status ; } } }

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• Socket server with multiple clients, sending messages to many clients without hurting liveliness

  - by Karl Johanson

  I have a small socket server, and I need to distribute various messages from client-to-client depending on different conditionals. However I think I have a small problem with livelyness in my current code, and is there anything wrong in my approach: public class CuClient extends Thread { Socket socket = null; ObjectOutputStream out; ObjectInputStream in; CuGroup group; public CuClient(Socket s, CuGroup g) { this.socket = s; this.group = g; out = new ObjectOutputStream(this.socket.getOutputStream()); out.flush(); in = new ObjectInputStream(this.socket.getInputStream()); } @Override public void run() { String cmd = ""; try { while (!cmd.equals("client shutdown")) { cmd = (String) in.readObject(); this.group.broadcastToGroup(this, cmd); } out.close(); in.close(); socket.close(); } catch (Exception e) { System.out.println(this.getName()); e.printStackTrace(); } } public void sendToClient(String msg) { try { this.out.writeObject(msg); this.out.flush(); } catch (IOException ex) { } } And my CuGroup: public class CuGroup { private Vector<CuClient> clients = new Vector<CuClient>(); public void addClient(CuClient c) { this.clients.add(c); } void broadcastToGroup(CuClient clientName, String cmd) { Iterator it = this.clients.iterator(); while (it.hasNext()) { CuClient cu = (CuClient)it.next(); cu.sendToClient(cmd); } } } And my main-class: public class SmallServer { public static final Vector<CuClient> clients = new Vector<CuClient>(10); public static boolean serverRunning = true; private ServerSocket serverSocket; private CuGroup group = new CuGroup(); public void body() { try { this.serverSocket = new ServerSocket(1337, 20); System.out.println("Waiting for clients\n"); do { Socket s = this.serverSocket.accept(); CuClient t = new CuClient(s,group); System.out.println("SERVER: " + s.getInetAddress() + " is connected!\n"); t.start(); } while (this.serverRunning); } catch (IOException ex) { ex.printStackTrace(); } } public static void main(String[] args) { System.out.println("Server"); SmallServer server = new SmallServer(); server.body(); } } Consider the example with many more groups, maybe a Collection of groups. If they all synchronize on a single Object, I don't think my server will be very fast. I there a pattern or something that can help my liveliness?

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• installing windows XP in Samsung SENS 145 plus notebook (no CD drive)

  - by user13267

  Hi I was trying to install Windows XP in a Samsung SENS 145 plus Notebook. It does not have a cd drive and I already managed to format it and semi install Windows XP, so now it does not even boot up either. This is what I did: Since it supports USB booting, I first made a bootable USB of Windows XP (Korean version; SP2 I think, may be SP 3) using Novicorp WinToFlash enter link description here. It managed to boot up at first and I was able to format the C driveand get Windows install to start up. It took forever to copy all the files from the USB and after the first reboot, before installation started, I cancelled the reboot from windows install, went to BIOS and changed the boot device priority from USB to internal hard drive. But now on bootup it showed me a list with two options for booting windows XP (much like in the case of a multi OS system) so I assumed that I had formatted drive D by mistake and installed XP there, instead of on C drive. Anyway, I chose one of them and it continued my Windows installation. I got the blue installation screen that shows ads about Windows XP on the right frame and estimated remaining time on the left. However, after completing the process, after the first reboot, instead of showing the Windows XP logo, it says \system32\hall.dll is missing (or corrupted I'm not sure, I needed to install the Korean version of windows and I could not exactly read the error message, however it was one that I have already seen in an English version installation, and I am sure it says either missing or corrupted). The problem is, now it shows the same error again when I try to reboot it from the USB drive as well. I tried to boot a portable version of Linux I made in another USB, but the computer does not boot up from that USB, and it shows hal.dll error when I try to boot it using the WIN XP installation USB I made, as well as when I try to boot it from the hard drive, where I suppose Win XP is now semiinstalled. So now I can't get the computer to start up at all, except going to the BIOS. What else can I try to solve this? Also, would it be possible to install XP on this computer by connecting it to another one running Windows 7 ultimate, through the ethernet card? That is, network just the two computers together, then install windows XP on the notebook from the desktop running windows 7? Please help, I'm running out of ideas on this one. If Korean version of windows XP is the problem then I am willing to install English version as well. (but I need to make sure if that is the real cause of the problem)

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• Linq insert statement inserts nothing, does not fail either

  - by pietjepoeier

  I am trying to insert a new account in my Acccounts table with linq. I tried using the EntityModel and Linq2Sql. I get no insert into my database nor an exception of any kind. public static Linq2SQLDataContext dataContext { get { return new Linq2SQLDataContext(); } } try { //EntityModel Accounts acc = Accounts.CreateAccounts(0, Voornaam, Straat, Huisnummer, Stad, Land, 15, EmailReg, Password1); Entities.AddToAccounts(acc); Entities.SaveChanges(); //Linq 2 SQL Account account = new Account { City = Stad, Country = Land, EmailAddress = EmailReg, Name = Voornaam, Password = Password1, Street = Straat, StreetNr = Huisnummer, StreetNrAdd = Toevoeging, Points = 25 }; dataContext.Accounts.InsertOnSubmit(account); var conf = dataContext.ChangeConflicts; // No changeConflicts ChangeSet set = dataContext.GetChangeSet(); // 0 inserts, 0 updates, 0 deletes try { dataContext.SubmitChanges(); } catch (Exception ex) { } } catch (EntityException ex) { }

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• IE 7 opens .zip files as XML documents

  - by EdmundG

  When I try clicking on a zip file link on a web page, IE 7 tries to open it as an XML document and displays: The XML page cannot be displayed Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again. I get around this by right-clicking and using Save Target As... Double clicking on a .zip in the file system opens my zip program without problems. How do I fix this problem?

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• SQLDependency thread

  - by user171523

  i am in the process implementing SQLdepenency i would like to know in case of Dependency Handler exeuctues will it spun a different thred from main Process ? What will happen when the event handler triggers? Do i need to worry about any multithreds issues? public void CreateSqlDependency() { try { using (SqlConnection connection = (SqlConnection)DBFactory.GetDBFactoryConnection(Constants.SQL_PROVIDER_NAME)) { SqlCommand command = (SqlCommand)DBFactory.GetCommand(Constants.SQL_PROVIDER_NAME); command.CommandText = watchQuery; command.CommandType = CommandType.Text; SqlDependency dependency = new SqlDependency(command); //Create the callback object dependency.OnChange += new OnChangeEventHandler(this.QueueChangeNotificationHandler); SqlDependency.Start(connectionString); DataTable dataTable = DBFactory.ExecuteSPReDT(command); } } catch (SqlException sqlExp) { throw sqlExp; } catch (Exception ex) { throw ex; } } public void QueueChangeNotificationHandler(object caller, SqlNotificationEventArgs e) { if(e.Info == SqlNotificationInfo.Insert) Fire(); }

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• Raw XML Push from input stream captures only the first line of XML

  - by pqsk

  I'm trying to read XML that is being pushed to my java app. I originally had this in my glassfish server working. The working code in glassfish is as follows: public class XMLPush implements Serializable { public void processXML() { StringBuilder sb = new StringBuilder(); BufferedReader br = null; try { br = ((HttpServletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest()).getReader (); String s = null; while((s = br.readLine ()) != null) { sb.append ( s ); } //other code to process xml ........... ............................. }catch(Exception ex) { XMLCreator.exceptionOutput ( "processXML","Exception",ex); } .... ..... }//processXML }//class It works perfect, but my client is unable to have glassfish on their server. I tried grabbing the raw xml from php, but I couldn't get it to work. I decided to open up a socket and listen for the xml push manually. Here is my code for receiving the push: public class ListenerService extends Thread { private BufferedReader reader = null; private String line; public ListenerService ( Socket connection )thows Exception { this.reader = new BufferedReader ( new InputStreamReader ( connection.getInputStream () ) ); this.line = null; }//ListenerService @Override public void run () { try { while ( (this.line = this.reader.readLine ()) != null) { System.out.println ( this.line ); ........ }//while } System.out.println ( ex.toString () ); } } catch ( Exception ex ) { ... }//catch }//run I haven't done much socket programing, but from what I read for the past week is that passing the xml into a string is bad. What am I doing wrong and why is it that in glassfish server it works, and when I just open a socket myself it doesn't? this is all that I receive from the push: PUT /?XML_EXPORT_REASON=ResponseLoop&TIMESTAMP=1292559547 HTTP/1.1 Host: ************************ Accept: */* Content-Length: 470346 Expect: 100-continue <?xml version="1.0" encoding="UTF-8" ?> Where did the xml go? Is it because I am placing it in a string? I just need to grab the xml and save it into a file and then process it. Everything else works, but this.Any help would be greatly appreciated.

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• getting last insert id .sqlalchemy orm

  - by gummmibear

  Hi i use sqlalchemy, i need some help. import hashlib import sqlalchemy as sa from sqlalchemy import orm from allsun.model import meta t_user = sa.Table("users",meta.metadata,autoload=True) class Duplicat(Exception): pass class LoginExistsException(Exception): pass class EmailExistsException(Exception): pass class User(object): """ def __setattr__(self, key, value): if key=='password' : value=unicode(hashlib.sha512(value).hexdigset()) object.__setattr__(self,key,value) """ def loginExists(self): try: meta.Session.query(User).filter(User.login==self.login).one() except orm.exc.NoResultFound: pass else: raise LoginExistsException() def emailExists(self): try: meta.Session.query(User).filter(User.email==self.email).one() except orm.exc.NoResultFound: pass else: raise EmailExistsException() def save(self): meta.Session.begin() meta.Session.save(self) try: meta.Session.commit() except sa.exc.IntegrityError: raise Duplicat() How can i get inserted id when i call? user = User() user.login = request.params['login'] user.password = hashlib.sha512(request.params['password']).hexdigest() user.email = request.params['email'] user.save()

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• What is the best workaround for the WCF client `using` block issue?

  - by Eric King

  I like instantiating my WCF service clients within a using block as it's pretty much the standard way to use resources that implement IDisposable: using (var client = new SomeWCFServiceClient()) { //Do something with the client } But, as noted in this MSDN article, wrapping a WCF client in a using block could mask any errors that result in the client being left in a faulted state (like a timeout or communication problem). Long story short, when Dispose() is called, the client's Close() method fires, but throws and error because it's in a faulted state. The original exception is then masked by the second exception. Not good. The suggested workaround in the MSDN article is to completely avoid using a using block, and to instead instantiate your clients and use them something like this: try { ... client.Close(); } catch (CommunicationException e) { ... client.Abort(); } catch (TimeoutException e) { ... client.Abort(); } catch (Exception e) { ... client.Abort(); throw; } Compared to the using block, I think that's ugly. And a lot of code to write each time you need a client. Luckily, I found a few other workarounds, such as this one on IServiceOriented. You start with: public delegate void UseServiceDelegate<T>(T proxy); public static class Service<T> { public static ChannelFactory<T> _channelFactory = new ChannelFactory<T>(""); public static void Use(UseServiceDelegate<T> codeBlock) { IClientChannel proxy = (IClientChannel)_channelFactory.CreateChannel(); bool success = false; try { codeBlock((T)proxy); proxy.Close(); success = true; } finally { if (!success) { proxy.Abort(); } } } } Which then allows: Service<IOrderService>.Use(orderService => { orderService.PlaceOrder(request); } That's not bad, but I don't think it's as expressive and easily understandable as the using block. The workaround I'm currently trying to use I first read about on blog.davidbarret.net. Basically you override the client's Dispose() method wherever you use it. Something like: public partial class SomeWCFServiceClient : IDisposable { void IDisposable.Dispose() { if (this.State == CommunicationState.Faulted) { this.Abort(); } else { this.Close(); } } } This appears to be able to allow the using block again without the danger of masking a faulted state exception. So, are there any other gotchas I have to look out for using these workarounds? Has anybody come up with anything better?

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