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• La RATP veut garder ses données pour elle et s'en prend à l'application d'un développeur, une démarche propriétaire à l'opposé de l'Open Data

  La RATP veut garder ses données pour elle Et s'en prend à l'application d'un développeur, une démarche propriétaire à l'opposé de l'Open Data Précisons le tout de suite, la Régie Autonome des Transports Parisiens (RATP) est dans son bon droit. Mais il y a certainement de meilleures manières de gérer ses droits. Pour les rares usagers qui ne le sauraient pas, la RATP, en plus de son activité de gestionnaire de transports, édite des applications destinées à faciliter la vie de ses usagers. Ces applications se trouvent notamment sur l'AppStore et sur l'Android Market. Un développeur français a néanmoins trouvé que ce service, dont une version premium était payante jusq...

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• Ubuntu 13.10 on SSD (system) and HDD (data). Missing /grub/i386-pc/normal.mod

  - by Tatarkow

  I've got HDD (750 GB) and SSD (16 GB). I want to install Ubuntu (13.10) on SSD, but because of its smallness I need to install /home, /var and /tmp on HDD. After that I would like to install Windows (system + data) on another partition of that HDD, but it is not important now. I installed Ubuntu (I had formatted and partitioned the disk before), but when I restarted my laptop it said: 'error: file '/grub/i386-pc/normal.mod' not found. grub rescue'. I tried to reinstall Grub 2 using this tutorial (as sdXY I used sdb1, because it's the only one partion of my SSD), but it didn't work. Can anybody help me, please? Thanks, Tatarkow

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• Accessing Server-Side Data from Client Script: Using Ajax Web Services, Script References, and ...

  Today's websites commonly exchange information between the browser and the web server using Ajax techniques. In a nutshell, the browser executes JavaScript code typically in response to the page loading or some user action. This JavaScript makes an asynchronous HTTP request to the server. The server processes this request and, perhaps, returns data that the browser can then seamlessly integrate into the web page. Typically, the information exchanged between the browser and server is serialized into JSON, an open, text-based serialization format that is both human-readable and platform independent.Adding such targeted, lightweight Ajax capabilities to your ASP.NET website requires two steps: first, you must create some mechanism on

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• Why Is ModSecurity Unable to Access the Data Directory?

  - by tommytwoeyes

  Update I think we've solved this; the problem appears to have been a result of the /modsec_storage directory having an incorrect value for its SELinux context type. However, we're still not sure, because although after I changed the SELinux context type value, Apache was able to create files in that directory for the global and ip collections (global.dir/global.pag and ip.dir/ip.pag), the new files still have zero bytes. I'm new to ModSecurity and am not sure if the files are empty because something is wrong with the configuration or if ModSecurity has simply determined it doesn't need to store IP addresses persistently after each transaction ends. Anyone able to offer guidance here? I've recently installed ModSecurity (v2.5.12 / CRS v2.0.8) on our production server, and everything works great, except for these errors that it keeps writing to the Apache error log: Failed to access DBM file "/modsec_storage/global": Permission denied [hostname "www.internationalstudent.com"] [uri "/includes/soc_bookmarks/images/delicious.png"] [unique_id "LZ6jc38AAAEAAFO6408AAABO"] Failed to access DBM file "/modsec_storage/ip": Permission denied [hostname "www.internationalstudent.com"] [uri "/includes/soc_bookmarks/images/delicious.png"] [unique_id "LZ6jc38AAAEAAFO6408AAABO"] After following the instructions for file permission settings in the ModSecurity handbook by Ivan Ristic, with no success, I created a /modsec_storage directory, set the owner & group to apache, and set the permissions for the directory recursively to 777. However, ModSecurity is still reporting the same permission errors, so I am stumped. Can anyone tell me how to fix this?

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• How do I create a VBA macro that will copy data from an entry sheet, into a summary sheet by date

  - by Mukkman

  I'm trying to create a macro that will copy data from a data entry sheet into a summary sheet. The entry sheet is going to be cleared daily so I can't use a formula just to reference it. I want the user to be able to enter a date, run a macro, and have the macro copy the data from the entry sheet into the cells for the corresponding date on the summary sheet. I've looked around and found bits and pieces of how to do this but I can't put it all together. Update: Thanks to the information below I was able to find some additional data. I have a pretty crude macro that works if the user manually selects the correct cell. Now I just need to figure out how to automatically select the current cell relative to the current date. Sub Update_Deposits() ' ' Update_Deposits Macro ' Dim selectedDate As String Dim rangeFound As Range selectedDate = Sheets("Summary Sheet").Range("F3") Set rangeFound = Sheets("Deposits").Cells.Find(CDate(selectedDate)) Dim Total1 As Double Dim Total2 As Double Dim Total3 As Double Dim Total4 As Double Dim Total5 As Double Total1 = Sheets("Summary Sheet").Range("E6") Total2 = Sheets("Summary Sheet").Range("E7") Total3 = Sheets("Summary Sheet").Range("E8") Total4 = Sheets("Summary Sheet").Range("E9") Total5 = Sheets("Summary Sheet").Range("E10") If Not (rangeFound Is Nothing) Then rangeFound.Offset(0, 2) = Total1 rangeFound.Offset(0, 3) = Total2 rangeFound.Offset(0, 4) = Total3 rangeFound.Offset(0, 6) = Total4 rangeFound.Offset(0, 7) = Total5 End If ' End Sub This version will find the first value on the page and fill in values: Sub Update_Deposits() ' ' Update_Deposits Macro ' Dim selectedDate As String Dim rangeFound As Range selectedDate = Sheets("Summary Sheet").Range("F3") Set rangeFound = Sheets("Deposits").Cells.Find(CDate(selectedDate)) Dim Total1 As Double Dim Total2 As Double Dim Total3 As Double Dim Total4 As Double Dim Total5 As Double Total1 = Sheets("Summary Sheet").Range("E6") Total2 = Sheets("Summary Sheet").Range("E7") Total3 = Sheets("Summary Sheet").Range("E8") Total4 = Sheets("Summary Sheet").Range("E9") Total5 = Sheets("Summary Sheet").Range("E10") If Not (rangeFound Is Nothing) Then rangeFound.Offset(0, 2) = Total1 rangeFound.Offset(0, 3) = Total2 rangeFound.Offset(0, 4) = Total3 rangeFound.Offset(0, 6) = Total4 rangeFound.Offset(0, 7) = Total5 End If ' End Sub

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• How to populate RRD database with CPU and MEM usage data?

  - by Tomaszs

  I have a Lighttpd server (on Centos) and would like to display 4 graphs: lighttpd traffic, lighttpd requests per second, CPU usage and MEM usage. I've set place for rrd database for lighttpd config like this: rrdtool.binary = "/usr/bin/rrdtool" rrdtool.db-name = "/var/www/lighttpd.rrd" And put into my WWW cgi-bin sh file that gets data from lighttpd RRD file and creates graphs of traffic and requests per second like this: #!/bin/sh RRDTOOL=/usr/bin/rrdtool OUTDIR=//var/www/graphs INFILE=/var/www/lighttpd.rrd OUTPRE=lighttpd-traffic WIDTH=400 HEIGHT=100 DISP="-v bytes --title TrafficWebserver \ DEF:binraw=$INFILE:InOctets:AVERAGE \ DEF:binmaxraw=$INFILE:InOctets:MAX \ DEF:binminraw=$INFILE:InOctets:MIN \ DEF:bout=$INFILE:OutOctets:AVERAGE \ DEF:boutmax=$INFILE:OutOctets:MAX \ DEF:boutmin=$INFILE:OutOctets:MIN \ CDEF:bin=binraw,-1,* \ CDEF:binmax=binmaxraw,-1,* \ CDEF:binmin=binminraw,-1,* \ CDEF:binminmax=binmaxraw,binminraw,- \ CDEF:boutminmax=boutmax,boutmin,- \ AREA:binmin#ffffff: \ STACK:binmax#f00000: \ LINE1:binmin#a0a0a0: \ LINE1:binmax#a0a0a0: \ LINE2:bin#efb71d:incoming \ GPRINT:bin:MIN:%.2lf \ GPRINT:bin:AVERAGE:%.2lf \ GPRINT:bin:MAX:%.2lf \ AREA:boutmin#ffffff: \ STACK:boutminmax#00f000: \ LINE1:boutmin#a0a0a0: \ LINE1:boutmax#a0a0a0: \ LINE2:bout#a0a735:outgoing \ GPRINT:bout:MIN:%.2lf \ GPRINT:bout:AVERAGE:%.2lf \ GPRINT:bout:MAX:%.2lf \ " $RRDTOOL graph $OUTDIR/$OUTPRE-hour.png -a PNG --start -14400 $DISP -w $WIDTH -h $HEIGHT $RRDTOOL graph $OUTDIR/$OUTPRE-day.png -a PNG --start -86400 $DISP -w $WIDTH -h $HEIGHT $RRDTOOL graph $OUTDIR/$OUTPRE-month.png -a PNG --start -2592000 $DISP -w $WIDTH -h $HEIGHT OUTPRE=lighttpd-requests DISP="-v req --title RequestsperSecond -u 1 \ DEF:req=$INFILE:Requests:AVERAGE \ DEF:reqmax=$INFILE:Requests:MAX \ DEF:reqmin=$INFILE:Requests:MIN \ CDEF:reqminmax=reqmax,reqmin,- \ AREA:reqmin#ffffff: \ STACK:reqminmax#00f000: \ LINE1:reqmin#a0a0a0: \ LINE1:reqmax#a0a0a0: \ LINE2:req#00a735:requests" $RRDTOOL graph $OUTDIR/$OUTPRE-hour.png -a PNG --start -14400 $DISP -w $WIDTH -h $HEIGHT $RRDTOOL graph $OUTDIR/$OUTPRE-day.png -a PNG --start -86400 $DISP -w $WIDTH -h $HEIGHT $RRDTOOL graph $OUTDIR/$OUTPRE-month.png -a PNG --start -2592000 $DISP -w $WIDTH -h $HEIGHT Basically it's not my script, i get it from somewhere from the internet. Now i would like to do the same for CPU usage and MEM usage. I don't like to use any additional packages! As you can see lighttpd populates lighttpd.rrd file with traffic data and requests per second. Now i would like to the system to populate second rrd file with CPU and MEM usage, so i can add to sh file code to generate graphs for this data. How can I populate RRD file with CPU and MEM usage data? Please, NO THIRD-PARTY tools !

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• How can I download a copy of an S3 public data set?

  - by tripleee

  i was naively assuming I could do something like s3cmd sync s3://snap-d203feb5 /var/tmp/copy but I seem to have the wrong idea of how to go about this. I cannot even get a simple thing to work; vnix$ s3cmd ls s3://snap-d203feb5 Bucket 'snap-d203feb5': ERROR: Bucket 'snap-d203feb5' does not exist I guess the identifier I have is not for a "bucket" but for a "public data set". How do I go from one to the other? Do I have to start up an EC2 instance and create a bucket for this? How? The instructions at http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/using-public-data-sets.html seem to assume I want to use the data in an EC2 instance, but in this case, I'd just like to browse a bit, at least for a start. By the by, copy/pasting the "US Snapshot ID" causes a nasty traceback from Python; they publish the ID with a weird Unicode (I presume) dash which cannot directly be copy/pasted. Is there a mistake when I copy it? And what's the significance of "US" in there? Can't I use the data outside North America??

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• Trying to retrieve data with a thermaltake blacX enclosure: Windows 7 believes the drive to be "uninitialized"

  - by Peeter Joot

  I have a laptop that won't boot. It appears to be a power problem ... laptop auto-turns-off within about 10 seconds of pressing the power button (with power buttons lighted temporarily and no display with or without external monitor). I've followed the dell troubleshooting guide which suggested reseating the memory modules and the hard drives, but that didn't help. Before trying to have the laptop serviced, I wanted to get some data off off the hard drive. I bought a thermaltake blacX enclosure, intending to use this to both use to retrieve the drive data with, and then later use as external storage. Following the instructions (insert cables, insert drive power on) goes fine, and Windows 7 on another laptop installs the device driver software. However, no drive letter shows up in 'Computer'. Under Computer-manage-storage I see the drive is there, and there's an option to "initialize" the drive. The Windows "initialize" dialog gives me the option to pick between "MBR" and "GPT" partitioning, which sounds like a good way to destroy the data on the drive. I'm thinking that I've purchased the wrong device for the job (or that my old drive is damaged). The old drive to recover info from is a Western Digital 500G/7200rpm SATA drive if that is relavent. Both the original laptop and the one I'm using for recovery are running Windows 7. Does anybody have experience with using a blacX enclosure to recover data off an already formatted drive?

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• Is there such a thing as a file hosted container which deduplicates data held within?

  - by Mallow

  Background I have backups of a website which stores all of it's data into a single file. This file is several gigs large and I have many different backups of this file. Most of the data within is mostly the same plus whatever was added or changed to it. I want to keep all the concurrent backups I've made through the years in case I find a horrible surprise of data corruption along the line. However storing a 10gig file every month gets expensive. Seeking Solution I've often thought about different ways of alleviating this problem. One thought that comes up very often combines the idea of a duplicating file system which doesn't require it's own partitioned volume on a hard drive. Something like what truecrypt does, what it calls, "file hosted containers" which when using the truecrypt program allows you to mount and dismount that volume as a regular hard drive. Question Is there a virtual hard drive mounter which uses file-based container which uses data deduplicaiton file system? (This question is a little awkward to put into words, if you have a better idea on how to ask this question please feel free to help out.)

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• Expose NativeActivity Variables to Workflow Designer

  - by sixlettervariables

  I've got a NativeActivity which contains an Activity body. The purpose of this activity is to expose a resource for the duration of the child activity as a Variable. The problem I've encountered is it appears the Variable cannot be used outside the activity. I'll use StreamReader as an example resource. ResourceActivity.cs: [Designer(typeof(ResourceActivityDesigner))] public sealed class ResourceActivity : NativeActivity { [RequiredArgument] public InArgument<string> Path { get; set; } [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)] public Activity Body { get; set; } [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)] public Variable<StreamReader> Resource { get; set; } public ResourceActivity() { this.Resource = new Variable<StreamReader> { Default = null, Name = "reader" }; } protected override void CacheMetadata(NativeActivityMetadata metadata) { if (this.Path != null) metadata.AddArgument(this.Path); if (this.Body != null) metadata.AddChild(this.Body); if (this.Resource != null) metadata.AddVariable(this.Resource); } protected override void Execute(NativeActivityContext context) { this.Resource.Set(context, new StreamReader(this.Path.Get(context))); context.ScheduleActivity(this.Body, new completionCallback(Done), new FaultCallback(Faulted)); } private void Done(NativeActivityContext context, ActivityInstance instance) { var reader = this.Reader.Get(context); if (reader != null) reader.Dispose(); } private void Faulted(NativeActivityFaultContext context, Exception ex, ActivityInstance instance) { var reader = this.Reader.Get(context); if (reader != null) reader.Dispose(); } } I cannot view "Resource" or "reader" in the Variables list in the Workflow Designer. Am I missing something in CacheMetadata?

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• UIView drawRect: when you draw a line, the rect area will be clear so the previous drawing is gone

  - by snakewa

  It is quite hard to tell so I upload an image to show my problem: http://i42.tinypic.com/2eezamo.jpg Basically in drawRect, I will draw the line from touchesMoved as finger touches and I will call "needsDisplayInRect" for redraw. But I found that the first line is done, the second line will clear the rect part, so some previouse drawing is gone. Here is my implementation: enter code here -(void) drawRect:(CGRect)rect{ //[super drawRect: rect]; CGContextRef context = UIGraphicsGetCurrentContext(); [self drawSquiggle:squiggle at:rect inContext:context]; } - (void)drawSquiggle:(Squiggle *)squiggle at:(CGRect) rect inContext:(CGContextRef)context { CGContextSetBlendMode(context, kCGBlendModeMultiply); UIColor *squiggleColor = squiggle.strokeColor; // get squiggle's color CGColorRef colorRef = [squiggleColor CGColor]; // get the CGColor CGContextSetStrokeColorWithColor(context, colorRef); NSMutableArray *points = [squiggle points]; // get points from squiggle // retrieve the NSValue object and store the value in firstPoint CGPoint firstPoint; // declare a CGPoint [[points objectAtIndex:0] getValue:&firstPoint]; // move to the point CGContextMoveToPoint(context, firstPoint.x, firstPoint.y); // draw a line from each point to the next in order for (int i = 1; i < [points count]; i++) { NSValue *value = [points objectAtIndex:i]; // get the next value CGPoint point; // declare a new point [value getValue:&point]; // store the value in point // draw a line to the new point CGContextAddLineToPoint(context, point.x, point.y); } // end for CGContextStrokePath(context); }

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• cURL gets response with utf-8 BOM

  - by Reshat Belyalov

  In my script I send data with cURL, and enabled CURLOPT_RETURNTRANSFER. The response is json encoded data. When I'm trying to json_decode, it returns null. Then I found that response contains utf-8 BOM symbols at the beginning of string (). There is some experiments: $data = $data = curl_exec($ch); echo $data; the result is {"field_1":"text_1","field_2":"text_2","field_3":"text_3"} $data = $data = curl_exec($ch); echo mb_detect_encoding($data); result - UTF-8 $data = $data = curl_exec($ch); echo mb_convert_encoding($data, 'UTF-8', mb_detect_encoding($data)); // identical to echo mb_convert_encoding($data, 'UTF-8', 'UTF-8'); result - {"field_1":"text_1","field_2":"text_2","field_3":"text_3"} The one thing that helps is removing first 3 symbols: if (substr($data, 0, 3) == pack('CCC', 239, 187, 191)) { $data = substr($data, 3); } But what if there will be another BOM? So the question is: How to detect right encoding of cURL response? OR how to detect what BOM has arrrived? Or maybe how to convert the response with BOM? Thanks.

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• ProgressDialog not working in external AsyncTask

  - by eric

  I'm beginning to think that to get a ProgressDialog to work the AsyncTask has to be an inner class within an Activity class. True? I have an activity the uses a database to manipulate information. If the database is populated all is well. If it is not populated then I need to download information from a website, populate the database, then access the populated database to complete the Views in onCreate. Problem is without some means to determine when the AsyncTask thread has finished populating the database, I get the following Force Close error message: Sorry! The application has stopped unexpectedly. I click on the Force Close button, the background AsyncTask thread continues to work, the database gets populated, and everything works ok. I need to get rid of that error message and need some help on how to do this. Here's some psuedo code: public class ViewStuff extends Activity { onCreate { if(database is populated) do_stuff else { FillDB task = null; if(task == null || task.getStatus().equals(AsyncTask.Status.FINISHED)) { task = new FillDB(context); task.execute(null); } } continue with onCreate using information from database to properly display } // end onCreate } // end class In a separate file: public class FillDB extends AsyncTask<Void, Void, Void> { private Context context; public FillDB (Context c) //pass the context in the constructor { context = c; } public void filldb () { doInBackground(); } @Override protected void onPreExecute() { ProgressDialog progressDialog = new ProgressDialog(context); //crashes with the following line progressDialog.show(context, "Working..", "Retrieving info"); } @Override protected Void doInBackground(Void... params) { // TODO Auto-generated method stub try etc etc etc } } What am I doing wrong?

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• Response.TransmitFile problem

  - by geoff

  I have the following code delivering a file to users when they click on a download link. For security purposes I can't just link directly to the file so this was set up to decode the url and transmit the file. It has been working fine for a while but recently I started having problems where the file will start downloading but there's no indication of how large the file is. Because of this when the download should stop, it doesn't. The file is about 99mb but when I download it, the browser just keeps downloading way beyond 100mb. I don't know what it's downloading but if I don't cancel it, it doesn't stop. So, my question is, is there either an alternative to transmitfile or a way to make sure the size of the file is sent also so that it stops at the right time? I don't want to use writefile because I don't want to load the entire file into memory since it's so large. Thanks. Here is the code: string filename = Path.GetFileName(url); context.Response.Buffer = true; context.Response.Charset = ""; context.Response.Cache.SetCacheability(HttpCacheability.NoCache); context.Response.ContentType = "application/x-rar-compressed"; context.Response.AddHeader("content-disposition", "attachment;filename=" + filename); context.Response.TransmitFile(context.Server.MapPath(url)); context.Response.Flush();

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• CGContext - PDF margin

  - by Manoj Khaylia

  Hi All I am showing PDF content on a view using this code using Quartz Sample // PDF page drawing expects a Lower-Left coordinate system, so we flip the coordinate system // before we start drawing. CGContextTranslateCTM(context, 0.0, self.bounds.size.height); CGContextScaleCTM(context, 1.0, -1.0); // Grab the first PDF page CGPDFPageRef page = CGPDFDocumentGetPage(pdf, pageNo); // We're about to modify the context CTM to draw the PDF page where we want it, so save the graphics state in case we want to do more drawing CGContextSaveGState(context); // CGPDFPageGetDrawingTransform provides an easy way to get the transform for a PDF page. It will scale down to fit, including any // base rotations necessary to display the PDF page correctly. CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFCropBox, self.bounds, 0, true); // And apply the transform. CGContextConcatCTM(context, pdfTransform); // Finally, we draw the page and restore the graphics state for further manipulations! CGContextDrawPDFPage(context, page); CGContextRestoreGState(context); Using this all works fine I want to set the margin for the PDF context, bydefault it showing 50 px margin in every side.. I have tried CGContext methods but not got the appropriate one. Can any body help me regarding this Thanks Monaj

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• how to parse pdf document in iphone or ipad?

  - by JohnWhite

  I have implemented pdf parsing application for ipad.But content of pdf display not clearly.I dont know why this happning.can you help me for this problem. Edit: I have used below code for pdf parsing.But text and image is not clear. (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { // Initialization code /* Demo PDF printed directly from Wikipedia without permission; all content (c) respective owners */ CFURLRef pdfURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), CFSTR("2008_11_mp.pdf"), NULL, NULL); pdf = CGPDFDocumentCreateWithURL((CFURLRef)pdfURL); CFRelease(pdfURL); counts+=1; self.pageNumber = counts; self.backgroundColor = nil; self.opaque = NO; self.userInteractionEnabled = NO; } return self; } (void)drawRect:(CGRect)rect { // Drawing code CGContextRef context = UIGraphicsGetCurrentContext(); // PDF page drawing expects a Lower-Left coordinate system, so we flip the coordinate system // before we start drawing. // Grab the first PDF page CGPDFPageRef page = CGPDFDocumentGetPage(pdf, pageNumber); CGContextTranslateCTM(context, 0, self.bounds.size.height); CGContextScaleCTM(context, 1, -1); // We're about to modify the context CTM to draw the PDF page where we want it, so save the graphics state in case we want to do more drawing CGContextSaveGState(context); // CGPDFPageGetDrawingTransform provides an easy way to get the transform for a PDF page. It will scale down to fit, including any // base rotations necessary to display the PDF page correctly. CGAffineTransform pdfTransform = CGPDFPageGetDrawingTransform(page, kCGPDFMediaBox, self.bounds, 0, true); // And apply the transform. CGContextConcatCTM(context, pdfTransform); // Finally, we draw the page and restore the graphics state for further manipulations! CGContextDrawPDFPage(context, page); CGContextRestoreGState(context); } Please help me solve this problem

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• Exporting a non public Type through public API

  - by sachin

  I am trying to follow Trees tutorial at: http://cslibrary.stanford.edu/110/BinaryTrees.html Here is the code I have written so far: package trees.bst; import java.util.ArrayList; import java.util.List; import java.util.StringTokenizer; /** * * @author sachin */ public class BinarySearchTree { Node root = null; class Node { Node left = null; Node right = null; int data = 0; public Node(int data) { this.left = null; this.right = null; this.data = data; } } public void insert(int data) { root = insert(data, root); } public boolean lookup(int data) { return lookup(data, root); } public void buildTree(int numNodes) { for (int i = 0; i < numNodes; i++) { int num = (int) (Math.random() * 10); System.out.println("Inserting number:" + num); insert(num); } } public int size() { return size(root); } public int maxDepth() { return maxDepth(root); } public int minValue() { return minValue(root); } public int maxValue() { return maxValue(root); } public void printTree() { //inorder traversal System.out.println("inorder traversal:"); printTree(root); System.out.println("\n--------------"); } public void printPostorder() { //inorder traversal System.out.println("printPostorder traversal:"); printPostorder(root); System.out.println("\n--------------"); } public int buildTreeFromOutputString(String op) { root = null; int i = 0; StringTokenizer st = new StringTokenizer(op); while (st.hasMoreTokens()) { String stNum = st.nextToken(); int num = Integer.parseInt(stNum); System.out.println("buildTreeFromOutputString: Inserting number:" + num); insert(num); i++; } return i; } public boolean hasPathSum(int pathsum) { return hasPathSum(pathsum, root); } public void mirror() { mirror(root); } public void doubleTree() { doubleTree(root); } public boolean sameTree(BinarySearchTree bst) { //is this tree same as another given tree? return sameTree(this.root, bst.getRoot()); } public void printPaths() { if (root == null) { System.out.println("print path sum: tree is empty"); } List pathSoFar = new ArrayList(); printPaths(root, pathSoFar); } ///-------------------------------------------Public helper functions public Node getRoot() { return root; } //Exporting a non public Type through public API ///-------------------------------------------Helper Functions private boolean isLeaf(Node node) { if (node == null) { return false; } if (node.left == null && node.right == null) { return true; } return false; } ///----------------------------------------------------------- private boolean sameTree(Node n1, Node n2) { if ((n1 == null && n2 == null)) { return true; } else { if ((n1 == null || n2 == null)) { return false; } else { if ((n1.data == n2.data)) { return (sameTree(n1.left, n2.left) && sameTree(n1.right, n2.right)); } } } return false; } private void doubleTree(Node node) { //create a copy //bypass the copy to continue looping if (node == null) { return; } Node copyNode = new Node(node.data); Node temp = node.left; node.left = copyNode; copyNode.left = temp; doubleTree(copyNode.left); doubleTree(node.right); } private void mirror(Node node) { if (node == null) { return; } Node temp = node.left; node.left = node.right; node.right = temp; mirror(node.left); mirror(node.right); } private void printPaths(Node node, List pathSoFar) { if (node == null) { return; } pathSoFar.add(node.data); if (isLeaf(node)) { System.out.println("path in tree:" + pathSoFar); pathSoFar.remove(pathSoFar.lastIndexOf(node.data)); //only the current node, a node.data may be duplicated return; } else { printPaths(node.left, pathSoFar); printPaths(node.right, pathSoFar); } } private boolean hasPathSum(int pathsum, Node node) { if (node == null) { return false; } int val = pathsum - node.data; boolean ret = false; if (val == 0 && isLeaf(node)) { ret = true; } else if (val == 0 && !isLeaf(node)) { ret = false; } else if (val != 0 && isLeaf(node)) { ret = false; } else if (val != 0 && !isLeaf(node)) { //recurse further ret = hasPathSum(val, node.left) || hasPathSum(val, node.right); } return ret; } private void printPostorder(Node node) { //inorder traversal if (node == null) { return; } printPostorder(node.left); printPostorder(node.right); System.out.print(" " + node.data); } private void printTree(Node node) { //inorder traversal if (node == null) { return; } printTree(node.left); System.out.print(" " + node.data); printTree(node.right); } private int minValue(Node node) { if (node == null) { //error case: this is not supported return -1; } if (node.left == null) { return node.data; } else { return minValue(node.left); } } private int maxValue(Node node) { if (node == null) { //error case: this is not supported return -1; } if (node.right == null) { return node.data; } else { return maxValue(node.right); } } private int maxDepth(Node node) { if (node == null || (node.left == null && node.right == null)) { return 0; } int ldepth = 1 + maxDepth(node.left); int rdepth = 1 + maxDepth(node.right); if (ldepth > rdepth) { return ldepth; } else { return rdepth; } } private int size(Node node) { if (node == null) { return 0; } return 1 + size(node.left) + size(node.right); } private Node insert(int data, Node node) { if (node == null) { node = new Node(data); } else if (data <= node.data) { node.left = insert(data, node.left); } else { node.right = insert(data, node.right); } //control should never reach here; return node; } private boolean lookup(int data, Node node) { if (node == null) { return false; } if (node.data == data) { return true; } if (data < node.data) { return lookup(data, node.left); } else { return lookup(data, node.right); } } public static void main(String[] args) { BinarySearchTree bst = new BinarySearchTree(); int treesize = 5; bst.buildTree(treesize); //treesize = bst.buildTreeFromOutputString("4 4 4 6 7"); treesize = bst.buildTreeFromOutputString("3 4 6 3 6"); //treesize = bst.buildTreeFromOutputString("10"); for (int i = 0; i < treesize; i++) { System.out.println("Searching:" + i + " found:" + bst.lookup(i)); } System.out.println("tree size:" + bst.size()); System.out.println("maxDepth :" + bst.maxDepth()); System.out.println("minvalue :" + bst.minValue()); System.out.println("maxvalue :" + bst.maxValue()); bst.printTree(); bst.printPostorder(); int pathSum = 10; System.out.println("hasPathSum " + pathSum + ":" + bst.hasPathSum(pathSum)); pathSum = 6; System.out.println("hasPathSum " + pathSum + ":" + bst.hasPathSum(pathSum)); pathSum = 19; System.out.println("hasPathSum " + pathSum + ":" + bst.hasPathSum(pathSum)); bst.printPaths(); bst.printTree(); //bst.mirror(); System.out.println("Tree after mirror function:"); bst.printTree(); //bst.doubleTree(); System.out.println("Tree after double function:"); bst.printTree(); System.out.println("tree size:" + bst.size()); System.out.println("Same tree:" + bst.sameTree(bst)); BinarySearchTree bst2 = new BinarySearchTree(); bst2.buildTree(treesize); treesize = bst2.buildTreeFromOutputString("3 4 6 3 6"); bst2.printTree(); System.out.println("Same tree:" + bst.sameTree(bst2)); System.out.println("---"); } } Now the problem is that netbeans shows Warning: Exporting a non public Type through public API for function getRoot(). I write this function to get root of tree to be used in sameTree() function, to help comparison of "this" with given tree. Perhaps this is a OOP design issue... How should I restructure the above code that I do not get this warning and what is the concept I am missing here?

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• Spring @PostConstruct function in a @Repository called multiple times

  - by Seth

  I have a DAO that I'm trying to inject into a couple different places: @Repository public class FooDAO { @Autowired private HibernateManager sessionFactory; @PostConstruct public void doSomeDatabaseStuff() throws DataAccessException { ... } } And my application-context.xml is a fairly simple context:component-scan: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd" default-init-method="init" default-destroy-method="destroy"> <context:component-scan base-package="top.level"/> </beans> The DAO is accessed from a couple servlets in my application server through @Autowired properties. As far as I understand, anything annotated with @Repository should default to being a singleton and thus doSomeDatabaseStuff() should only be called once (as is my intention). The problem is that I'm seeing doSomeDatabaseStuff() called multiple times. What's going on here? Have I set something up incorrectly? I'm using spring 3.0.0. Thanks for the help.

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• jQuery, unable to store data returned by $.get function.

  - by Deepak Prasanna

  I am trying to turn div#sidebar into a sidebar in my app. My code looks like the one below. $('#sidebar').userProfile(); jQuery.fn.userProfile = function() { $.get('/users/profile', function(data){ $(this).html(data); }); }; It didnt work because, I found the this (inside the $.get function) here contexts to the get request and not $('#sidebar'). Then I tried something like below. $('#sidebar').userProfile(); #This doesnot work jQuery.fn.userProfile = function() { var side_bar = null; $.get('/users/profile', function(data){ side_bar = data; }); $(this).html(side_bar); console.log(side_bar); }; This doesnt work either. In firebug console I see Null which I am setting on top when I am declaring the variable.Atlast I made it work by changing my code to something like below by hardcoding the selector. #This works, but I cannot turn any element to a sidebar which is sick. jQuery.fn.userProfile = function() { $.get('/users/profile', function(data){ $('#sidebar').html(data); }); }; But this is not I wanted because I wanted to turn any element to a sidebar. Where am I goin wrong or which is the correct way of doing it?

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• Can I perform some processing on the POST data before ASP.NET MVC UpdateModel happens?

  - by Domenic

  I would like to strip out non-numeric elements from the POST data before using UpdateModel to update the copy in the database. Is there a way to do this? // TODO: it appears I don't even use the parameter given at all, and all the magic // happens via UpdateModel and the "controller's current value provider"? [HttpPost] public ActionResult Index([Bind(Include="X1, X2")] Team model) // TODO: stupid magic strings { if (this.ModelState.IsValid) { TeamContainer context = new TeamContainer(); Team thisTeam = context.Teams.Single(t => t.TeamId == this.CurrentTeamId); // TODO HERE: apply StripWhitespace() to the data before using UpdateModel. // The data is currently somewhere in the "current value provider"? this.UpdateModel(thisTeam); context.SaveChanges(); this.RedirectToAction(c => c.Index()); } else { this.ModelState.AddModelError("", "Please enter two valid Xs."); } // If we got this far, something failed; redisplay the form. return this.View(model); } Sorry for the terseness, up all night working on this; hopefully my question is clear enough? Also sorry since this is kind of a newbie question that I might be able to get with a few hours of documentation-trawling, but I'm time-pressured... bleh.

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• Is it possible to read data that has been separately copied to the Android sd card without having ro

  - by icecream

  I am developing an application that needs to access data on the sd card. When I run on my development device (an odroid with Android 2.1) I have root access and can construct the path using: File sdcard = Environment.getExternalStorageDirectory(); String path = sdcard.getAbsolutePath() + File.separator + "mydata" File data = new File(path); File[] files = data.listFiles(new FilenameFilter() { @Override public boolean accept(File dir, String filename) { return filename.toLowerCase().endsWith(".xyz"); }}); However, when I install this on a phone (2.1) where I do not have root access I get files == null. I assume this is because I do not have the right permissions to read the data from the sd card. I also get files == null when just trying to list files on /sdcard. So the same applies without my constructed path. Also, this app is not intended to be distributed through the app store and is needs to use data copied separately to the sd card so this is a real use-case. It is too much data to put in res/raw (I have tried, it did not work). I have also tried adding: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> to the manifest, even though I only want to read the sd card, but it did not help. I have not found a permission type for reading the storage. There is probably a correct way to do this, but I haven't been able to find it. Any hints would be useful.

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• How can I access mainframe data with .Net applications and SQL Queries?

  - by orandov

  We have a large amount of data stored on an IBM mainframe using VSAM files. A lot of this data is dropped on the network every night in the form of text files to be processed and dumped into FoxPro and SQL Server databases. There are also many text files produced nightly by custom applications that get uploaded to the mainframe to keep everything in sync. Keeping the everything in sync is very tricky, to say the least. We are not getting rid of the mainframe any time soon and we would like to replace all the nightly batch processing with real time access to the mainframe data. We would like to be able to: Read data directly from the mainframe and produce reports based on it. Possibly using SQL queries. Read and Write data from custom .Net applications. We are not looking for a new platform to interface with the mainframe like Information Builders offers. We don't want to build application modules or reports with new "Business Intelligence" tools. We already know how to generate reports and write custom applications using SQL,.Net, Visual Studio, etc. All we are looking for is some sort of adapter to connect to our mainframe data. Any ideas are appreciated.

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• Deployment problems of asp.net 3.5 in iis 5.1

  - by peter

  i have microsoft.net 3.5 application and have IIS5.1,,for deploying website do i need to do any thing aother than this 1.In IIS i created virtual directory named SPA and i browsed in to the location where my project is lacated and i added entire project file there( Do i need to add only bin file and login page or i need to add all pages???) 2.In asp.net folder i selected tab version 2.0,, 3.when i browsed i can see all pages when i click login.aspx i am getting this error [SqlException (0x80131904): User does not have permission to perform this action.] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +821651 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +186 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1932 System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +33 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +172 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +381 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +181 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +173 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +133 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +30 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +424 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +66 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +494 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +82 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +105 System.Data.SqlClient.SqlConnection.Open() +111 ChatTool.LoginForm.Page_Load(Object sender, EventArgs e) in D:\Chat tool_Ameya\ProjectCode\Unisys Project Testing\Unisys Project\Login.aspx.cs:25 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +47 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436

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• passing data from a servlet to javascript code in an Ajax application ?

  - by A.S al-shammari

  I have a simple jsp/servlet application and I want to add AJAX feature to this app. I use JQuery , but it doesn't matter what javascript framework I use. This is my code: <script type="text/javascript"> function callbackFunction(data){ $('#content').html(data); } $('document').ready(function(){ $('#x').click(function() { $.post('/ajax_2/servlet',callbackFunction) }); }); </script> <body> <a href="#" id="x">Increase it</a> <div id="content"></div> </body> </html> Servlet HttpSession session = request.getSession(); Integer myInteger = (Integer)session.getAttribute("myInteger"); if(myInteger == null) myInteger = new Integer(0); else myInteger = new Integer(myInteger+1); session.setAttribute("myInteger", myInteger); response.getWriter().println(myInteger); The Question: I use out.print to transfer data from a servlet to javascript code (ajax code) , but If I have a complex structure such as Vector of Object or something like this , what is the best way to transfer the data? what about an XML file , JSON ? Is there any special jsp/servlets library to transfer data from a servlet to ajax application ? How can I parse this data in callbackFunction ?

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• Convert SQL to LINQ in MVC3 with Ninject

  - by Jeff

  I'm using MVC3 and still learning LINQ. I'm having some trouble trying to convert a query to LINQ to Entities. I want to return an employee object. SELECT E.EmployeeID, E.FirstName, E.LastName, MAX(EO.EmployeeOperationDate) AS "Last Operation" FROM Employees E INNER JOIN EmployeeStatus ES ON E.EmployeeID = ES.EmployeeID INNER JOIN EmployeeOperations EO ON ES.EmployeeStatusID = EO.EmployeeStatusID INNER JOIN Teams T ON T.TeamID = ES.TeamID WHERE T.TeamName = 'MyTeam' GROUP BY E.EmployeeID, E.FirstName, E.LastName ORDER BY E.FirstName, E.LastName What I have is a few tables, but I need to get only the newest status based on the EmployeeOpertionDate. This seems to work fine in SQL. I'm also using Ninject and set my query to return Ienumerable. I played around with the group by option but it then returns IGroupable. Any guidance on converting and returning the property object type would be appreciated. Edit: I started writing this out in LINQ but I'm not sure how to properly return the correct type or cast this. public IQueryable<Employee> GetEmployeesByTeam(int teamID) { var q = from E in context.Employees join ES in context.EmployeeStatuses on E.EmployeeID equals ES.EmployeeID join EO in context.EmployeeOperations on ES.EmployeeStatusID equals EO.EmployeeStatusID join T in context.Teams on ES.TeamID equals T.TeamID where T.TeamName == "MyTeam" group E by E.EmployeeID into G select G; return q; } Edit2: This seems to work for me public IQueryable<Employee> GetEmployeesByTeam(int teamID) { var q = from E in context.Employees join ES in context.EmployeeStatuses on E.EmployeeID equals ES.EmployeeID join EO in context.EmployeeOperations.OrderByDescending(eo => eo.EmployeeOperationDate) on ES.EmployeeStatusID equals EO.EmployeeStatusID join T in context.Teams on ES.TeamID equals T.TeamID where T.TeamID == teamID group E by E.EmployeeID into G select G.FirstOrDefault(); return q; }

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