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• Can you execute multiple statements in with a If statement?

  - by Jack Null

  This is my function: (defun MyFunction(input) (let ((NEWNUM (find input num))) (if (find input num) //if this (setq num NEWNUM) (FUNCT2) //then execute both of these (list 'not found)))) //else output this So after the if statment I want to be able to execute (setq num NEWNUM) and (FUNCT2). One to set a new variable and then the other to call a function. Any ideas on how to do this?

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• Implement two functions with the same name but different, non-covariant return types due to multiple abstract base classes

  - by user1508167

  If I have two abstract classes defining a pure virtual function with the same name, but different, non-covariant return types, how can I derive from these and define an implementation for both their functions? #include <iostream> class ITestA { public: virtual ~ITestA() {}; virtual float test() =0; }; class ITestB { public: virtual ~ITestB() {}; virtual bool test() =0; }; class C : public ITestA, public ITestB { public: /* Somehow implement ITestA::test and ITestB::test */ }; int main() { ITestA *a = new C(); std::cout << a->test() << std::endl; // should print a float, like "3.14" ITestB *b = dynamic_cast<ITestB *>(a); if (b) { std::cout << b->test() << std::endl; // should print "1" or "0" } delete(a); return 0; } As long as I don't call C::test() directly there's nothing ambiguous, so I think that it should work somehow and I guess I just didn't find the right notation yet. Or is this impossible, if so: Why?

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• How do i change everything behind a certain point in a Jagged array?

  - by Jack Null

  Say I have a jagged array, and position 2,3 is taken by int 3. Every other spot is filled with int 0. How would I fill all the positions behind 2,3 with a 4? 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 to this: 4 4 4 4 4 4 4 4 4 4 4 4 4 3 0 0 0 0 0 0 0 Ive tried variations of this: int a = 2; int b = 3; for (int x = 0; x < a; x++) { for (int y = 0; y < board.space[b].Length; y++) { board.space[x][y] = 4; } }

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• Can enum represent string numbers?

  - by Jack Null

  I want a user to input "Sun" and have that represent "1". Console.Write("Enter a Day: "); day = Console.ReadLine(); can enum do this?

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• Windows File I/O Reading

  - by eyeanand

  Currently working on open/read images in VC++. Some examples i came across on the internet use Windows.h I/O routines like ReadFile...but there seems to be inconsistency in there declaration. Here's what i have got. //So i have this function to load file BYTE* LoadFile ( int* width, int* height, long* size, LPCWSTR bmpfile ) { BITMAPFILEHEADER bmpheader; BITMAPINFOHEADER bmpinfo; DWORD bytesread = 0; HANDLE file = CreateFile ( bmpfile , GENERIC_READ, FILE_SHARE_READ,NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL ); if ( NULL == file ) return NULL; if ( ReadFile ( file, &bmpheader, sizeof ( BITMAPFILEHEADER ),&bytesread, NULL ) == false ) { CloseHandle ( file ); return NULL; } . . . return appropriate value; } Now the ReadFile API function is declared as follows in WinBase.h WINBASEAPI BOOL WINAPI ReadFile( In HANDLE hFile, Out LPVOID lpBuffer, In DWORD nNumberOfBytesToRead, _Out_opt_ LPDWORD lpNumberOfBytesRead, _Inout_opt_ LPOVERLAPPED lpOverlapped ); And in MSDN examples... They call this function like this. ReadFile(hFile, chBuffer, BUFSIZE, &dwBytesRead, NULL) Which expects that "bytesRead" is sort of out parameter. so it gives me number of bytes read. But in my code ..it is giving error message. 'ReadFile' : cannot convert parameter 4 from 'LPDWORD *' to 'LPDWORD' so i just initialized bytesRead to 0 and passed by value.( which is wrong..but just to check if it works ). then it gives this exception Unhandled exception at 0x774406ae in ImProc.exe: 0xC0000005: Access violation writing location 0x00000000. Kindly suggest . Kindly tell if any code i missed out....including while forming the question itself. Thanks.

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• How do I split text by "," and get rid of the "," in java?

  - by Jack Null

  I want to split and get rid of the comma's in a string like this that are entered into a textfield: 1,2,3,4,5,6 and then display them in a different textfield like this: 123456 here is what i have tried. String text = jTextField1.getText(); String[] tokens = text.split(","); jTextField3.setText(tokens.toString());

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• My computer freezes irregularly

  - by Manhim

  My computer started to freeze at irregular times for 3 weeks now. Please note that this question change with each things that i try. (For additional details) What happens My computer freezes, the video stops. (No graphic glitches, it just stops) Sound keeps playing up to some time (Usually 10-30 seconds) then stops playing. Sometimes, randomly, the screen on my G-15 keyboard flickers and I see caracters not at the right places. Usually happens for about 1-2 seconds and a bit before my computer freezes. I have to keep the power button pressed for 4 seconds to shut my computer down. I still hear my hard drives and fans working. Sometimes it works with no problems for a full day, some other times it just keeps freezing each time I restart my computer and I have to leave it for the rest of the day. Sometimes my mouse freezes for a fraction of a second (Like 0.01 to 0.2 seconds) quite randomly, usually before it freezes. No errors spotted by the "Action center" unlike when I had problems with my last video card on this system (Driver errors). My G-15 LCD screen also freezes. Sometimes my G-15 LCD screen flickers and caracters gets caried around temporary under heavy load. Now, most of the times, the BIOS hard disks boot order gets reversed for some reason and I have to put it to the right one and save each times I boot. (Might be unrelated, not sure, but it first started yesterday) Sometimes the BIOS doesn't detect my 750GB hard drive plugged in SATA1. What I did so far I have had similar problems in the past and I had changed my hard drive (It was faulty), so I tested my software RAID-0 array and it was faulty so I changed it. (I reinstalled Windows 7 with this part). I also tested with unplugging my secondary hard drive. My CPU was running at about 100 degree Celsius, I removed the dust between the fans and the heatsink and it's now between 45-55. I ran a CPU stress-test and it didn't freeze during the tests (using Prime95 on all cores) Ran a memory test (using memtest86+) for a single pass and there were no errors. Ran a GPU stress test with ati-tools and furmark and it didn't freeze during the tests. (No artefacts either) I had troubles with my graphic card when I got it, but I think that it got fixed with a driver update. I checked the voltages in my BIOS setup and they all seemed ok (±0.2 I think). I have ran on the computer without problems with Fedora 15 on an external hard drive (Appart that it couldn't load Gnome 3 and was reverting to Gnome 2, didn't want to install drivers since I use it on multiple computers) I used it to backup my files from the raid array to my 1TB hard drive for the reinstallation of Windows. (So the crashes only happenned on Windows) [The external hard drive is plugged directly on a SATA port] I contacted EVGA (My graphic card vendor) and pointed them on this question, I'm looking for an answer. Ran sensors on Fedora 15 and got this output: http://pastebin.com/0BHJnAvu Ran 6 short different CPU stress test on Fedora 15 (Haven't found any complete stress testers for Linux) and it didn't crash. Changed the thermal paste to some Artic Silver 5 for my CPU and stress tested the CPU, temperature was at 50 idle, then 64 highest and slowly went down to 62 during the test. Ran some stress testing with a temporary graphic card and it went ok. Ran furmark stress test with my original graphic card and it freezed again. GPU had a temp of 74C, a CPU temp of 58C and a mobo temp of 40C or 45C (Dunno which one it is from SpeedFan). Ran a furmark stress test and a CPU stress test at the same time, results: http://pastebin.com/2t6PLpdJ I have been using my computer without stressing it for about 2 hours now and no crashes yet. I also have disabled the AMD Cool'n'quiet function on the BIOS for a more regular power to the CPU. When I ran Furmark without C'n'q my computer didn't freeze but I had a "Driver Kernel Error" that have recovered (And Furmark crashed) all that while running a CPU stress test. The computer eventually frozed without me being at it, but this time my screen just went on sleep and I couldn't wake it. Using the stability tester in nTune my computer freezed again (In the same manner as before). I notived that Speedfan gives me a -12V of -16.97V and a -5V of -8.78V. I wonder if these numbers are reliable and if they are good or bad. I have swapped my G-15 with another basic USB keyboard (HP) and I have ran furmark for about 10 minutes with a CPU stability test running each 60 seconds for 30 seconds and my computer haven't crashed yet. Ran some more extended tests without my G-15 and it freezed like it usually do. Removed the nForce Hard disk controler. Disabled command queuing in the NVIDIA nForce SATA Controller for both port 0 and port 1 (Errors from the logs) Used CPUID HwMonitor, here are the voltages: http://pastebin.com/dfM7p4jV Changed some configurations in the motherboard BIOS: Disabled PEG Link Mode, Changed AI Tuning to Standard, Disabled the 1394 Controller, Disabled HD Audio, Disabled JMicron RAID controller and Disabled SATA Raid. When it happens When I play video games (Mostly) When I play flash games (Second most) When I'm looking at my desktop background (It rarely happens when I have a window open, but it does, sometimes) When my Graphic card and my CPU are stressed. Sometimes when my Graphic card is stressed. Never happenned while stressing only the CPU. Sometimes when my CPU is stressed. Specs Windows Seven x64 Home Premium Motherboard: M2N-SLI Deluxe CPU: AMD Phenom 9950 x2 @ 2.6GHz Memory: Kingston 4x2GB Dual Channel (Pretty basic memory sticks) Hard drives: Was 2x250GB (Western digital caviar) in raid-0 + 1TB (WD caviar black), I replaced the raid array with a 750GB (WD caviar black) [Yes I removed the array from the raid configurations] 750W Power supply No overcloking. Ever. There have been some power-downs like 4-5 weeks ago, but the problem didn't start immediately after. (I wasn't home, so my computer got shut-down) Event logs (Warnings, errors and critical errors) for the last 24 hours: http://pastebin.com/Bvvk31T7 My current to-try list Reinstall the drivers and software 1 by 1 and do extensive stress testing between each. Update the BIOS firmware to the most recent stable one. Change my motherboard. Status updates Keeping only the last 3 (28/06 04pm) More stress testing and still pass the tests. (28/06 03pm) Been stress testing for 10 minute straight now and 5 minutes with both CPU and GPU being stressed at the same time. (28/06 03pm) Stress-testing right now, so far no problems. A little hope Tests with Furmark and Prime95. Testing Windows bare-bone: 30 Minutes stress, no freeze. Installing an Anti-virus and some software, restarting computer. Testing with Anti-virus and some software (No drivers installed): 30 Minutes stress, no freeze. Installing audio drivers, restarting computer. Testing with the audio drivers: 30 Minutes stress, no freeze. Installing the latest graphic drivers from EVGA's website (without 3d vision since I don't use it), restarting computer. Testing with the graphic drivers: 30 Minutes stress, no freeze. Configuring Windows to my liking and installing more softwares. In this situation, how can I successfully pin-point the current hardware problem? (If it's a hardware problem) Because I don't really have the budget to just forget and replace everything. I also don't really have hardware to test-replace current hardware.

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• Gmail rejects emails. Openspf.net fails the tests

  - by pablomedok

  I've got a problem with Gmail. It started after one of our trojan infected PCs sent spam for one day from our IP address. We've fixed the problem, but we got into 3 black lists. We've fixed that, too. But still every time we send an email to Gmail the message is rejected: So I've checked Google Bulk Sender's guide once again and found an error in our SPF record and fixed it. Google says everything should become fine after some time, but this doesn't happen. 3 weeks already passed but we still can't send emails to Gmail. Our MX setup is a bit complex, but not too much: We have a domain name delo-company.com, it has it's own mail @delo-company.com (this one is fine, but the problems are with sub-domain name corp.delo-company.com). Delo-company.com domain has several DNS records for the subdomain: corp A 82.209.198.147 corp MX 20 corp.delo-company.com corp.delo-company.com TXT "v=spf1 ip4:82.209.198.147 ~all" (I set ~all for testing purposes only, it was -all before that) These records are for our corporate Exchange 2003 server at 82.209.198.147. Its LAN name is s2.corp.delo-company.com so its HELO/EHLO greetings are also s2.corp.delo-company.com. To pass EHLO check we've also created some records in delo-company.com's DNS: s2.corp A 82.209.198.147 s2.corp.delo-company.com TXT "v=spf1 ip4:82.209.198.147 ~all" As I understand SPF verifications should be passed in this way: Out server s2 connects to MX of the recepient (Rcp.MX): EHLO s2.corp.delo-company.com Rcp.MX says Ok, and makes SPF check of HELO/EHLO. It does NSlookup for s2.corp.delo-company.com and gets the above DNS-records. TXT records says that s2.corp.delo-company.com should be only from IP 82.209.198.147. So it should be passed. Then our s2 server says RCPT FROM: Rcp.MX` server checks it, too. The values are the same so they should also be positive. Maybe there is also a rDNS check, but I'm not sure what is checked HELO or RCPT FROM. Our PTR record for 82.209.198.147 is: 147.198.209.82.in-addr.arpa. 86400 IN PTR s2.corp.delo-company.com. To me everything looks fine, but anyway all emails are rejected by Gmail. So, I've checked MXtoolbox.com - it says everything is fine, I passed http://www.kitterman.com/spf/validate.html Python check, I did 25port.com email test. It's fine, too: Return-Path: <[email protected]> Received: from s2.corp.delo-company.com (82.209.198.147) by verifier.port25.com id ha45na11u9cs for <[email protected]>; Fri, 2 Mar 2012 13:03:21 -0500 (envelope-from <[email protected]>) Authentication-Results: verifier.port25.com; spf=pass [email protected] Authentication-Results: verifier.port25.com; domainkeys=neutral (message not signed) [email protected] Authentication-Results: verifier.port25.com; dkim=neutral (message not signed) Authentication-Results: verifier.port25.com; sender-id=pass [email protected] Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CCF89E.BE02A069" Subject: test Date: Fri, 2 Mar 2012 21:03:15 +0300 X-MimeOLE: Produced By Microsoft Exchange V6.5 Message-ID: <[email protected]> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: test Thread-Index: Acz4jS34oznvbyFQR4S5rXsNQFvTdg== From: =?koi8-r?B?89XQ0tXOwMsg8MHXxcw=?= <[email protected]> To: <[email protected]> I also checked with [email protected], but it FAILs all the time, no matter which SPF records I make: <s2.corp.delo-company.com #5.7.1 smtp;550 5.7.1 <[email protected]>: Recipient address rejected: SPF Tests: Mail-From Result="softfail": Mail From="[email protected]" HELO name="s2.corp.delo-company.com" HELO Result="softfail" Remote IP="82.209.198.147"> I've filled Gmail form twice, but nothing happens. We do not send spam, only emails for our clients. 2 or 3 times we did mass emails (like New Year Greetings and sales promos) from corp.delo-company.com addresses, but they where all complying to Gmail Bulk Sender's Guide (I mean SPF, Open Relays, Precedence: Bulk and Unsubscribe tags). So, this should be not a problem. Please, help me. What am I doing wrong? UPD: I also tried Unlocktheinbox.com test and the server also fails this test. Here is the result: http://bit.ly/wYr39h . Here is one more http://bit.ly/ypWLjr I also tried to send email from that server manually via telnet and everything is fine. Here is what I type: 220 mx.google.com ESMTP g15si4811326anb.170 HELO s2.corp.delo-company.com 250 mx.google.com at your service MAIL FROM: <[email protected]> 250 2.1.0 OK g15si4811326anb.170 RCPT TO: <[email protected]> 250 2.1.5 OK g15si4811326anb.170 DATA 354 Go ahead g15si4811326anb.170 From: [email protected] To: Pavel <[email protected]> Subject: Test 28 This is telnet test . 250 2.0.0 OK 1330795021 g15si4811326anb.170 QUIT 221 2.0.0 closing connection g15si4811326anb.170 And this is what I get: Delivered-To: [email protected] Received: by 10.227.132.73 with SMTP id a9csp96864wbt; Sat, 3 Mar 2012 09:17:02 -0800 (PST) Received: by 10.101.128.12 with SMTP id f12mr4837125ann.49.1330795021572; Sat, 03 Mar 2012 09:17:01 -0800 (PST) Return-Path: <[email protected]> Received: from s2.corp.delo-company.com (s2.corp.delo-company.com. [82.209.198.147]) by mx.google.com with SMTP id g15si4811326anb.170.2012.03.03.09.15.59; Sat, 03 Mar 2012 09:17:00 -0800 (PST) Received-SPF: pass (google.com: domain of [email protected] designates 82.209.198.147 as permitted sender) client-ip=82.209.198.147; Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 82.209.198.147 as permitted sender) [email protected] Date: Sat, 03 Mar 2012 09:17:00 -0800 (PST) Message-Id: <[email protected]> From: [email protected] To: Pavel <[email protected]> Subject: Test 28 This is telnet test

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• Fluent NHibernate: mapping complex many-to-many (with additional columns) and setting fetch

  - by HackedByChinese

  I need a Fluent NHibernate mapping that will fulfill the following (if nothing else, I'll also take the appropriate NHibernate XML mapping and reverse engineer it). DETAILS I have a many-to-many relationship between two entities: Parent and Child. That is accomplished by an additional table to store the identities of the Parent and Child. However, I also need to define two additional columns on that mapping that provide more information about the relationship. This is roughly how I've defined my types, at least the relevant parts (where Entity is some base type that provides an Id property and checks for equivalence based on that Id): public class Parent : Entity { public virtual IList<ParentChildRelationship> Children { get; protected set; } public virtual void AddChildRelationship(Child child, int customerId) { var relationship = new ParentChildRelationship { CustomerId = customerId, Parent = this, Child = child }; if (Children == null) Children = new List<ParentChildRelationship>(); if (Children.Contains(relationship)) return; relationship.Sequence = Children.Count; Children.Add(relationship); } } public class Child : Entity { // child doesn't care about its relationships } public class ParentChildRelationship { public int CustomerId { get; set; } public Parent Parent { get; set; } public Child Child { get; set; } public int Sequence { get; set; } public override bool Equals(object obj) { if (ReferenceEquals(null, obj)) return false; if (ReferenceEquals(this, obj)) return true; var other = obj as ParentChildRelationship; if (return other == null) return false; return (CustomerId == other.CustomerId && Parent == other.Parent && Child == other.Child); } public override int GetHashCode() { unchecked { int result = CustomerId; result = Parent == null ? 0 : (result*397) ^ Parent.GetHashCode(); result = Child == null ? 0 : (result*397) ^ Child.GetHashCode(); return result; } } } The tables in the database look approximately like (assume primary/foreign keys and forgive syntax): create table Parent ( id int identity(1,1) not null ) create table Child ( id int identity(1,1) not null ) create table ParentChildRelationship ( customerId int not null, parent_id int not null, child_id int not null, sequence int not null ) I'm OK with Parent.Children being a lazy loaded property. However, the ParentChildRelationship should eager load ParentChildRelationship.Child. Furthermore, I want to use a Join when I eager load. The SQL, when accessing Parent.Children, NHibernate should generate an equivalent query to: SELECT * FROM ParentChildRelationship rel LEFT OUTER JOIN Child ch ON rel.child_id = ch.id WHERE parent_id = ? OK, so to do that I have mappings that look like this: ParentMap : ClassMap<Parent> { public ParentMap() { Table("Parent"); Id(c => c.Id).GeneratedBy.Identity(); HasMany(c => c.Children).KeyColumn("parent_id"); } } ChildMap : ClassMap<Child> { public ChildMap() { Table("Child"); Id(c => c.Id).GeneratedBy.Identity(); } } ParentChildRelationshipMap : ClassMap<ParentChildRelationship> { public ParentChildRelationshipMap() { Table("ParentChildRelationship"); CompositeId() .KeyProperty(c => c.CustomerId, "customerId") .KeyReference(c => c.Parent, "parent_id") .KeyReference(c => c.Child, "child_id"); Map(c => c.Sequence).Not.Nullable(); } } So, in my test if i try to get myParentRepo.Get(1).Children, it does in fact get me all the relationships and, as I access them from the relationship, the Child objects (for example, I can grab them all by doing parent.Children.Select(r => r.Child).ToList()). However, the SQL that NHibernate is generating is inefficient. When I access parent.Children, NHIbernate does a SELECT * FROM ParentChildRelationship WHERE parent_id = 1 and then a SELECT * FROM Child WHERE id = ? for each child in each relationship. I understand why NHibernate is doing this, but I can't figure out how to set up the mapping to make NHibernate query the way I mentioned above.

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• iPhone - UIImage Leak, CGBitmapContextCreateImage Leak

  - by bbullis21

  Alright I am having a world of difficulty tracking down this memory leak. When running this script I do not see any memory leaking, but my objectalloc is climbing. Instruments points to CGBitmapContextCreateImage create_bitmap_data_provider malloc, this takes up 60% of my objectalloc. This code is called several times with a NSTimer. //GET IMAGE FROM RESOURCE DIR NSString * fileLocation = [[NSBundle mainBundle] pathForResource:imgMain ofType:@"jpg"]; NSData * imageData = [NSData dataWithContentsOfFile:fileLocation]; UIImage * blurMe = [UIImage imageWithData:imageData]; NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; UIImage * scaledImage = [blurMe _imageScaledToSize:CGSizeMake(blurMe.size.width / dblBlurLevel, blurMe.size.width / dblBlurLevel) interpolationQuality:3.0]; UIImage * labelImage = [scaledImage _imageScaledToSize:blurMe.size interpolationQuality:3.0]; UIImage * imageCopy = [[UIImage alloc] initWithCGImage:labelImage.CGImage]; [pool drain]; // deallocates scaledImage and labelImage imgView.image = imageCopy; [imageCopy release]; Below is the blur function. I believe the objectalloc issue is located in here. Maybe I just need a pair of fresh eyes. Would be great if someone could figure this out. Sorry it is kind of long... I'll try and shorten it. @implementation UIImage(Blur) - (UIImage *)blurredCopy:(int)pixelRadius { //VARS unsigned char *srcData, *destData, *finalData; CGContextRef context = NULL; CGColorSpaceRef colorSpace; void * bitmapData; int bitmapByteCount; int bitmapBytesPerRow; //IMAGE SIZE size_t pixelsWide = CGImageGetWidth(self.CGImage); size_t pixelsHigh = CGImageGetHeight(self.CGImage); bitmapBytesPerRow = (pixelsWide * 4); bitmapByteCount = (bitmapBytesPerRow * pixelsHigh); colorSpace = CGColorSpaceCreateDeviceRGB(); if (colorSpace == NULL) { return NULL; } bitmapData = malloc( bitmapByteCount ); if (bitmapData == NULL) { CGColorSpaceRelease( colorSpace ); } context = CGBitmapContextCreate (bitmapData, pixelsWide, pixelsHigh, 8, bitmapBytesPerRow, colorSpace, kCGImageAlphaPremultipliedFirst ); if (context == NULL) { free (bitmapData); } CGColorSpaceRelease( colorSpace ); free (bitmapData); if (context == NULL) { return NULL; } //PREPARE BLUR size_t width = CGBitmapContextGetWidth(context); size_t height = CGBitmapContextGetHeight(context); size_t bpr = CGBitmapContextGetBytesPerRow(context); size_t bpp = (CGBitmapContextGetBitsPerPixel(context) / 8); CGRect rect = {{0,0},{width,height}}; CGContextDrawImage(context, rect, self.CGImage); // Now we can get a pointer to the image data associated with the bitmap // context. srcData = (unsigned char *)CGBitmapContextGetData (context); if (srcData != NULL) { size_t dataSize = bpr * height; finalData = malloc(dataSize); destData = malloc(dataSize); memcpy(finalData, srcData, dataSize); memcpy(destData, srcData, dataSize); int sums[5]; int i, x, y, k; int gauss_sum=0; int radius = pixelRadius * 2 + 1; int *gauss_fact = malloc(radius * sizeof(int)); for (i = 0; i < pixelRadius; i++) { .....blah blah blah... THIS IS JUST LONG CODE THE CREATES INT FIGURES ........blah blah blah...... } if (gauss_fact) { free(gauss_fact); } } size_t bitmapByteCount2 = bpr * height; //CREATE DATA PROVIDER CGDataProviderRef dataProvider = CGDataProviderCreateWithData(NULL, srcData, bitmapByteCount2, NULL); //CREATE IMAGE CGImageRef cgImage = CGImageCreate( width, height, CGBitmapContextGetBitsPerComponent(context), CGBitmapContextGetBitsPerPixel(context), CGBitmapContextGetBytesPerRow(context), CGBitmapContextGetColorSpace(context), CGBitmapContextGetBitmapInfo(context), dataProvider, NULL, true, kCGRenderingIntentDefault ); //RELEASE INFORMATION CGDataProviderRelease(dataProvider); CGContextRelease(context); if (destData) { free(destData); } if (finalData) { free(finalData); } if (srcData) { free(srcData); } UIImage *retUIImage = [UIImage imageWithCGImage:cgImage]; CGImageRelease(cgImage); return retUIImage; } The only thing I can think of that is holding up the objectalloc is this UIImage *retUIImage = [UIImage imageWithCGImage:cgImage];...but how to do I release that after it has been returned? Hopefully someone can help please.

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• Error when running a GWTTestCase using maven gwt plugin

  - by adancu

  Hi, I've created a test which extends GWTTestCase but I'm getting this error: mvn integration-test gwt:test Running com.myproject.test.ui. GwtTestMyFirstTestCase Translatable source found in... [WARN] No source path entries; expect subsequent failures [ERROR] Unable to find type 'java.lang.Object' [ERROR] Hint: Check that your module inherits 'com.google.gwt.core.Core' either directly or indirectly (most often by inheriting module 'com.google.gwt.user.User') Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.1 sec <<< FAILURE! GwtTestMyFirstTestCase.java is in /src/test/java, while the GWT module is located in src/main/java. I assume this shouldn't be a problem. I've done everything required according to http://mojo.codehaus.org/gwt-maven-plugin/user-guide/testing.html and of course that my gwt module already has com.google.gwt.core.Core indirectly imported. http://maven.apache.org/maven-v4_0_0.xsd" 4.0.0 com.myproject main jar 0.0.1-SNAPSHOT Main Module <properties> <gwt.module>com.myproject.MainModule</gwt.module> </properties> <parent> <groupId>com.myproject</groupId> <artifactId>app</artifactId> <version>0.1.0-SNAPSHOT</version> </parent> <dependencies> <dependency> <groupId>com.myproject</groupId> <artifactId>app-commons</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>com.google.gwt</groupId> <artifactId>gwt-dev</artifactId> <version>${gwt.version}</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <configuration> <outputFile>../app/src/main/webapp/WEB-INF/main.tree</outputFile> </configuration> </plugin> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>gwt-maven-plugin</artifactId> <executions> <execution> <goals> <goal>test</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <classesDirectory> ${project.build.directory}/${project.build.finalName}/${gwt.module} </classesDirectory> </configuration> </plugin> </plugins> </build> Here is the test case, located in /src/test/java/com/myproject/test/ui public class GwtTestMyFirstTestCase extends GWTTestCase { @Override public String getModuleName() { return "com.myproject.MainModule"; } public void testSomething() { } } Here is the gwt module I'm trying to test, located in src/main/java/com/myproject/MainModule.gwt.xml: <inherits name='com.myproject.Commons' /> <source path="site" /> <source path="com.myproject.test.ui" /> <set-property name="gwt.suppressNonStaticFinalFieldWarnings" value="true" /> <entry-point class='com.myproject.site.SiteModuleEntry' /> Can anyone give me a hint or two about what I'm doing wrong? Thanks in advance.

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• unable to update gridview

  - by bhakti

  Please help ,i have added update/edit command button in gridview so to update data in my sql server database but am unable to do it. Data is not updated in database . ======code for onrowupdate======================================== protected void gRowUpdate(object sender, GridViewUpdateEventArgs e) { Books b = null; b = new Books(); DataTable dt=null; GridView g = (GridView)sender; try { dt=new DataTable(); b = new Books(); b.author = Convert.ToString(g.Rows[e.RowIndex].FindControl("Author")); b.bookID = Convert.ToInt32(g.Rows[e.RowIndex].FindControl("BookID")); b.title = Convert.ToString(g.Rows[e.RowIndex].FindControl("Title")); b.price = Convert.ToDouble(g.Rows[e.RowIndex].FindControl("Price")); // b.rec = Convert.ToString(g.Rows[e.RowIndex].FindControl("Date_of_reciept")); b.ed = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.bill = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.cre_by = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.src = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.pages = Convert.ToInt32(g.Rows[e.RowIndex].FindControl("Edition")); b.pub = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.mod_by = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.remark = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); // b.year = Convert.ToString(g.Rows[e.RowIndex].FindControl("Edition")); b.updatebook(b); g.EditIndex = -1; dt = b.GetAllBooks(); g.DataSource = dt; g.DataBind(); } catch (Exception ex) { throw (ex); } finally { b = null; } } ===================My stored procedure for update book able to update database by exec in sqlserver mgmt studio========================== set ANSI_NULLS ON set QUOTED_IDENTIFIER ON go ALTER PROCEDURE [dbo].[usp_updatebook] @bookid bigint, @author varchar(50), @title varchar(50), @price bigint, @src_equisition varchar(50), @bill_no varchar(50), @publisher varchar(50), @pages bigint, @remark varchar(50), @edition varchar(50), @created_by varchar(50), @modified_by varchar(50) /*@date_of_reciept datetime, @year_of_publication datetime*/ AS declare @modified_on datetime set @modified_on=getdate() UPDATE books SET author=@author, title=@title, price=@price, src_equisition=@src_equisition, bill_no=@bill_no, publisher=@publisher, /*Date_of_reciept=@date_of_reciept,*/ pages=@pages, remark=@remark, edition=@edition, /*Year_of_publication=@year_of_publication,*/ created_by=@created_by, modified_on=@modified_on, modified_by=@modified_by WHERE bookid=@bookid ========================class library function for update==================== public void updatebook(Books b) { DataAccess dbAccess = null; SqlCommand cmd = null; try { dbAccess = new DataAccess(); cmd = dbAccess.GetSQLCommand("usp_updatebook", CommandType.StoredProcedure); cmd.Parameters.Add("@bookid", SqlDbType.VarChar, 50).Value = b.bookID; cmd.Parameters.Add("@author", SqlDbType.VarChar, 50).Value = b.author; cmd.Parameters.Add("@title", SqlDbType.VarChar, 50).Value = b.title; cmd.Parameters.Add("@price", SqlDbType.Money).Value = b.price; cmd.Parameters.Add("@publisher", SqlDbType.VarChar, 50).Value = b.pub; // cmd.Parameters.Add("@year_of_publication", SqlDbType.DateTime).Value =Convert.ToDateTime( b.year); cmd.Parameters.Add("@src_equisition", SqlDbType.VarChar, 50).Value = b.src; cmd.Parameters.Add("@bill_no", SqlDbType.VarChar, 50).Value = b.bill; cmd.Parameters.Add("@remark", SqlDbType.VarChar, 50).Value = b.remark; cmd.Parameters.Add("@pages", SqlDbType.Int).Value = b.pages; cmd.Parameters.Add("@edition", SqlDbType.VarChar, 50).Value = b.ed; // cmd.Parameters.Add("@date_of_reciept", SqlDbType.DateTime).Value = Convert.ToDateTime(b.rec); // cmd.Parameters.Add("@created_on", SqlDbType.DateTime).Value = Convert.ToDateTime(b.cre_on); cmd.Parameters.Add("@created_by", SqlDbType.VarChar, 50).Value = b.cre_by; //cmd.Parameters.Add("@modified_on", SqlDbType.DateTime).Value = Convert.ToDateTime(b.mod_on); cmd.Parameters.Add("@modified_by", SqlDbType.VarChar, 50).Value = b.mod_by; cmd.ExecuteNonQuery(); } catch (Exception ex) { throw (ex); } finally { if (cmd.Connection != null && cmd.Connection.State == ConnectionState.Open) cmd.Connection.Close(); dbAccess = null; cmd = null; } } I have also tried to do update by following way protected void gv1_updating(object sender, GridViewUpdateEventArgs e) { GridView g = (GridView)sender; abc a = new abc(); DataTable dt = new DataTable(); try { a.cd_Id = Convert.ToInt32(g.DataKeys[e.RowIndex].Values[0].ToString()); //TextBox b = (TextBox)g.Rows[e.RowIndex].Cells[0].FindControl("cd_id"); TextBox c = (TextBox)g.Rows[e.RowIndex].Cells[2].FindControl("cd_name"); TextBox d = (TextBox)g.Rows[e.RowIndex].Cells[3].FindControl("version"); TextBox f = (TextBox)g.Rows[e.RowIndex].Cells[4].FindControl("company"); TextBox h = (TextBox)g.Rows[e.RowIndex].Cells[6].FindControl("created_by"); TextBox i = (TextBox)g.Rows[e.RowIndex].Cells[8].FindControl("modified_by"); //a.cd_Id = Convert.ToInt32(b.Text); a.cd_name = c.Text; a.ver = d.Text; a.comp = f.Text; a.cre_by = h.Text; a.mod_by = i.Text; a.updateDigi(a); g.EditIndex = -1; dt = a.GetAllDigi(); g.DataSource = dt; g.DataBind(); } catch(Exception ex) { throw (ex); } finally { dt = null; a = null; g = null; } } =================== but have error of Index out of range exception========= please do reply,thanxs in advance

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• Java textfile I/O problem

  - by KáGé

  Hello, I have to make a torpedo game for school with a toplist for it. I want to store it in a folder structure near the JAR: /Torpedo/local/toplist/top_i.dat, where the i is the place of that score. The files will be created at the first start of the program with this call: File f; f = new File(Toplist.toplistPath+"/top_1.dat"); if(!f.exists()){ Toplist.makeToplist(); } Here is the toplist class: package main; import java.awt.Color; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.prefs.Preferences; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JTextArea; public class Toplist { static String toplistPath = "./Torpedo/local/toplist"; //I know it won't work this easily, it's only to get you the idea public static JFrame toplistWindow = new JFrame("Torpedó - [TOPLISTA]"); public static JTextArea toplist = new JTextArea(""); static StringBuffer toplistData = new StringBuffer(3000); public Toplist() { toplistWindow.setSize(500, 400); toplistWindow.setLocationRelativeTo(null); toplistWindow.setResizable(false); getToplist(); toplist.setSize(400, 400); toplist.setLocation(0, 100); toplist.setColumns(5); toplist.setText(toplistData.toString()); toplist.setEditable(false); toplist.setBackground(Color.WHITE); toplistWindow.setLayout(null); toplistWindow.setVisible(true); } public Toplist(Player winner) { //this is to be done yet, this will set the toplist at first and then display it toplistWindow.setLayout(null); toplistWindow.setVisible(true); } /** * Creates a new toplist */ public static void makeToplist(){ new File(toplistPath).mkdir(); for(int i = 1; i <= 10; i++){ File f = new File(toplistPath+"/top_"+i+".dat"); try { f.createNewFile(); } catch (IOException e) { JOptionPane.showMessageDialog(new JFrame(), "Fájl hiba: toplista létrehozása", "Error", JOptionPane.ERROR_MESSAGE); } } } /** * If the score is a top score it inserts it into the list * * @param score - the score to be checked */ public static void setToplist(int score, Player winner){ BufferedReader input = null; PrintWriter output = null; int topscore; for(int i = 1; i <= 10; i++){ try { input = new BufferedReader(new FileReader(toplistPath+"/top_"+i+",dat")); String s; topscore = Integer.parseInt(input.readLine()); if(score > topscore){ for(int j = 9; j >= i; j--){ input = new BufferedReader(new FileReader(toplistPath+"/top_"+j+".dat")); output = new PrintWriter(new FileWriter(toplistPath+"/top_"+(j+1)+".dat")); while ((s = input.readLine()) != null) { output.println(s); } } output = new PrintWriter(new FileWriter(toplistPath+"/top_"+i+".dat")); output.println(score); output.println(winner.name); if(winner.isLocal){ output.println(Torpedo.session.remote.name); }else{ output.println(Torpedo.session.remote.name); } output.println(Torpedo.session.mapName); output.println(DateUtils.now()); break; } } catch (FileNotFoundException e) { JOptionPane.showMessageDialog(new JFrame(), "Fájl hiba: toplista frissítése", "Error", JOptionPane.ERROR_MESSAGE); } catch (IOException e) { JOptionPane.showMessageDialog(new JFrame(), "Fájl hiba: toplista frissítése", "Error", JOptionPane.ERROR_MESSAGE); } finally { if (input != null) { try { input.close(); } catch (IOException e) { JOptionPane.showMessageDialog(new JFrame(), "Fájl hiba: toplista frissítése", "Error", JOptionPane.ERROR_MESSAGE); } } if (output != null) { output.close(); } } } } /** * This loads the toplist into the buffer */ public static void getToplist(){ BufferedReader input = null; toplistData = null; String s; for(int i = 1; i <= 10; i++){ try { input = new BufferedReader(new FileReader(toplistPath+"/top_"+i+".dat")); while((s = input.readLine()) != null){ toplistData.append(s); toplistData.append('\t'); } toplistData.append('\n'); } catch (FileNotFoundException e) { JOptionPane.showMessageDialog(new JFrame(), "Fájl hiba: toplista betöltése", "Error", JOptionPane.ERROR_MESSAGE); } catch (IOException e) { JOptionPane.showMessageDialog(new JFrame(), "Fájl hiba: toplista betöltése", "Error", JOptionPane.ERROR_MESSAGE); } } } /** * * @author http://www.rgagnon.com/javadetails/java-0106.html * */ public static class DateUtils { public static final String DATE_FORMAT_NOW = "yyyy-MM-dd HH:mm:ss"; public static String now() { Calendar cal = Calendar.getInstance(); SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW); return sdf.format(cal.getTime()); } } } The problem is, that it can't access any of the files. I've tried adding them to the classpath and at least six different variations of file/path handling I found online but nothing worked. Could anyone tell me what do I do wrong? Thank you.

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• Why does this XML validation via XSD fail in libxml2 (but succeed in xmllint) and how do I fix it?

  - by mtree

  If I run this XML validation via xmllint: xmllint --noout --schema schema.xsd test.xml I get this success message: .../test.xml validates However if I run the same validation via libxml2's C API: int result = xmlSchemaValidateDoc(...) I get a return value of 1845 and this failure message: Element '{http://example.com/XMLSchema/1.0}foo': No matching global declaration available for the validation root. Which I can make absolutely no sense of. :( schema.xsd: <?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd" > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://example.com/XMLSchema/1.0" targetNamespace="http://example.com/XMLSchema/1.0" elementFormDefault="qualified" attributeFormDefault="unqualified"> <xs:element name="foo"> </xs:element> </xs:schema> test.xml: <?xml version="1.0" encoding="UTF-8"?> <foo xmlns="http://example.com/XMLSchema/1.0"> </foo> main.c: #include <stdio.h> #include <sys/stat.h> #include <sys/types.h> #include <string.h> #include <libxml/parser.h> #include <libxml/valid.h> #include <libxml/xmlschemas.h> u_int32_t get_file_size(const char *file_name) { struct stat buf; if ( stat(file_name, &buf) != 0 ) return(0); return (unsigned int)buf.st_size; } void handleValidationError(void *ctx, const char *format, ...) { char *errMsg; va_list args; va_start(args, format); vasprintf(&errMsg, format, args); va_end(args); fprintf(stderr, "Validation Error: %s", errMsg); free(errMsg); } int main (int argc, const char * argv[]) { const char *xsdPath = argv[1]; const char *xmlPath = argv[2]; printf("\n"); printf("XSD File: %s\n", xsdPath); printf("XML File: %s\n", xmlPath); int xmlLength = get_file_size(xmlPath); char *xmlSource = (char *)malloc(sizeof(char) * xmlLength); FILE *p = fopen(xmlPath, "r"); char c; unsigned int i = 0; while ((c = fgetc(p)) != EOF) { xmlSource[i++] = c; } printf("\n"); printf("XML Source:\n\n%s\n", xmlSource); fclose(p); printf("\n"); int result = 42; xmlSchemaParserCtxtPtr parserCtxt = NULL; xmlSchemaPtr schema = NULL; xmlSchemaValidCtxtPtr validCtxt = NULL; xmlDocPtr xmlDocumentPointer = xmlParseMemory(xmlSource, xmlLength); parserCtxt = xmlSchemaNewParserCtxt(xsdPath); if (parserCtxt == NULL) { fprintf(stderr, "Could not create XSD schema parsing context.\n"); goto leave; } schema = xmlSchemaParse(parserCtxt); if (schema == NULL) { fprintf(stderr, "Could not parse XSD schema.\n"); goto leave; } validCtxt = xmlSchemaNewValidCtxt(schema); if (!validCtxt) { fprintf(stderr, "Could not create XSD schema validation context.\n"); goto leave; } xmlSetStructuredErrorFunc(NULL, NULL); xmlSetGenericErrorFunc(NULL, handleValidationError); xmlThrDefSetStructuredErrorFunc(NULL, NULL); xmlThrDefSetGenericErrorFunc(NULL, handleValidationError); result = xmlSchemaValidateDoc(validCtxt, xmlDocumentPointer); leave: if (parserCtxt) { xmlSchemaFreeParserCtxt(parserCtxt); } if (schema) { xmlSchemaFree(schema); } if (validCtxt) { xmlSchemaFreeValidCtxt(validCtxt); } printf("\n"); printf("Validation successful: %s (result: %d)\n", (result == 0) ? "YES" : "NO", result); return 0; } console output: XSD File: /Users/dephiniteloop/Desktop/xml_validate/schema.xsd XML File: /Users/dephiniteloop/Desktop/xml_validate/test.gkml XML Source: <?xml version="1.0" encoding="UTF-8"?> <foo xmlns="http://example.com/XMLSchema/1.0"> </foo> Validation Error: Element '{http://example.com/XMLSchema/1.0}foo': No matching global declaration available for the validation root. Validation successful: NO (result: 1845) In case it matters: I'm on OSX 10.6.7 with its default libxml2.dylib (/Developer/SDKs/MacOSX10.6.sdk/usr/lib/libxml2.2.7.3.dylib)

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• Cannot open database "test" requested by the login. The login failed. Login failed for user 'xyz\ASP

  - by coure06

  I have created a webservice which is saving some data into to db. But i am getting this error Cannot open database "test" requested by the login. The login failed. Login failed for user 'xyz\ASPNET'.

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• Problem with GCC calling static templates functions in templated parent class.

  - by Adisak

  I have some code that compiles and runs on MSVC++ but will not compile on GCC. I have made a test snippet that follows. My goal was to move the static method from BFSMask to BFSMaskSized. Can someone explain what is going on with the errors (esp. the weird 'operator<' error)? Thank you. In the case of both #defines are 0, then the code compiles on GCC. #define DOESNT_COMPILE_WITH_GCC 0 #define FUNCTION_IN_PARENT 0 I get errors if I change either #define to 1. Here are the errors I see. #define DOESNT_COMPILE_WITH_GCC 0 #define FUNCTION_IN_PARENT 1 Test.cpp: In static member function 'static typename Snapper::BFSMask<T>::T_Parent::T_SINT Snapper::BFSMask<T>::Create_NEZ(TCMP)': Test.cpp(492): error: 'CreateMaskFromHighBitSized' was not declared in this scope #define DOESNT_COMPILE_WITH_GCC 1 #define FUNCTION_IN_PARENT 0 Test.cpp: In static member function 'static typename Snapper::BFSMask<T>::T_Parent::T_SINT Snapper::BFSMask<T>::Create_NEZ(TCMP) [with TCMP = int, T = int]': Test.cpp(500): instantiated from 'TVAL Snapper::BFWrappedInc(TVAL, TVAL, TVAL) [with TVAL = int]' Test.cpp(508): instantiated from here Test.cpp(490): error: invalid operands of types '<unresolved overloaded function type>' and 'unsigned int' to binary 'operator<' #define DOESNT_COMPILE_WITH_GCC 1 #define FUNCTION_IN_PARENT 1 Test.cpp: In static member function 'static typename Snapper::BFSMask<T>::T_Parent::T_SINT Snapper::BFSMask<T>::Create_NEZ(TCMP) [with TCMP = int, T = int]': Test.cpp(500): instantiated from 'TVAL Snapper::BFWrappedInc(TVAL, TVAL, TVAL) [with TVAL = int]' Test.cpp(508): instantiated from here Test.cpp(490): error: invalid operands of types '<unresolved overloaded function type>' and 'unsigned int' to binary 'operator<' Here is the code namespace Snapper { #define DOESNT_COMPILE_WITH_GCC 0 #define FUNCTION_IN_PARENT 0 // MASK TYPES // NEZ - Not Equal to Zero #define BFSMASK_NEZ(A) ( ( A ) | ( 0 - A ) ) #define BFSELECT_MASK(MASK,VTRUE,VFALSE) ( ((MASK)&(VTRUE)) | ((~(MASK))&(VFALSE)) ) template<typename TVAL> TVAL BFSelect_MASK(TVAL MASK,TVAL VTRUE,TVAL VFALSE) { return(BFSELECT_MASK(MASK,VTRUE,VFALSE)); } //----------------------------------------------------------------------------- // Branch Free Helpers template<int BYTESIZE> struct BFSMaskBase {}; template<> struct BFSMaskBase<2> { typedef UINT16 T_UINT; typedef SINT16 T_SINT; }; template<> struct BFSMaskBase<4> { typedef UINT32 T_UINT; typedef SINT32 T_SINT; }; template<int BYTESIZE> struct BFSMaskSized : public BFSMaskBase<BYTESIZE> { static const int SizeBytes = BYTESIZE; static const int SizeBits = SizeBytes*8; static const int MaskShift = SizeBits-1; typedef typename BFSMaskBase<BYTESIZE>::T_UINT T_UINT; typedef typename BFSMaskBase<BYTESIZE>::T_SINT T_SINT; #if FUNCTION_IN_PARENT template<int N> static T_SINT CreateMaskFromHighBitSized(typename BFSMaskBase<N>::T_SINT inmask); #endif }; template<typename T> struct BFSMask : public BFSMaskSized<sizeof(T)> { // BFSMask = -1 (all bits set) typedef BFSMask<T> T_This; // "Import" the Parent Class typedef BFSMaskSized<sizeof(T)> T_Parent; typedef typename T_Parent::T_SINT T_SINT; #if FUNCTION_IN_PARENT typedef T_Parent T_MaskGen; #else typedef T_This T_MaskGen; template<int N> static T_SINT CreateMaskFromHighBitSized(typename BFSMaskSized<N>::T_SINT inmask); #endif template<typename TCMP> static T_SINT Create_NEZ(TCMP A) { //ReDefineType(const typename BFSMask<TCMP>::T_SINT,SA,A); //const typename BFSMask<TCMP>::T_SINT cmpmask = BFSMASK_NEZ(SA); const typename BFSMask<TCMP>::T_SINT cmpmask = BFSMASK_NEZ(A); #if DOESNT_COMPILE_WITH_GCC return(T_MaskGen::CreateMaskFromHighBitSized<sizeof(TCMP)>(cmpmask)); #else return(CreateMaskFromHighBitSized<sizeof(TCMP)>(cmpmask)); #endif } }; template<typename TVAL> TVAL BFWrappedInc(TVAL x,TVAL minval,TVAL maxval) { const TVAL diff = maxval-x; const TVAL mask = BFSMask<TVAL>::Create_NEZ(diff); const TVAL incx = x + 1; return(BFSelect_MASK(mask,incx,minval)); } SINT32 currentsnap = 0; SINT32 SetSnapshot() { currentsnap=BFWrappedInc<SINT32>(currentsnap,0,20); return(currentsnap); } }

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• java socket programming problem

  - by mk.persia

  Hi, what's wrong with my code? sorry about my bad English package sockettest; import java.io.*; import java.net.*; class sevr implements Runnable{ public void run() { ServerSocket sSkt = null; Socket skt = null; BufferedReader br = null; BufferedWriter bw = null; try{ System.out.println("Server: is about to create socket"); sSkt = new ServerSocket(6666); System.out.println("Server: socket created"); } catch(IOException e){ System.out.println("Server: socket creation failure"); } try{ System.out.println("Server: is listening"); skt = sSkt.accept(); System.out.println("Server: Connection Established"); } catch(IOException e){ System.out.println("Server: listening failed"); } try{ System.out.println("Server: creating streams"); br = new BufferedReader(new InputStreamReader(skt.getInputStream())); bw = new BufferedWriter(new OutputStreamWriter(skt.getOutputStream())); System.out.println("Server: stream done"); } catch(IOException e){ System.out.println("Server: stream failed"); } System.out.println("Server: reading the request"); try{ String line = null; while((line =br.readLine()) != null){ System.out.println("Server: client said- "+ line); } } catch(IOException e){ System.out.println("Server: reading failed"); } System.out.println("Server: reading fished"); System.out.println("Server: responding"); try{ bw.write("Hi! I am server!"); } catch(IOException e){ System.out.println("Server: responding failed"); } System.out.println("Server: responding finished"); System.out.println("Server: is finishing"); try { br.close(); bw.close(); skt.close(); sSkt.close(); } catch (IOException e) { System.out.println("Server: finishing failed"); } System.out.println("Server: done"); } } class clnt implements Runnable{ public void run() { Socket skt = null; BufferedReader br = null; BufferedWriter bw = null; try{ System.out.println("Client: about to create socket"); skt = new Socket(InetAddress.getLocalHost(),6666); System.out.println("Client: socket created"); } catch(IOException e){ System.out.println("Client: socket creation failure"); } try{ System.out.println("Client: creating streams"); br = new BufferedReader(new InputStreamReader(skt.getInputStream())); bw = new BufferedWriter(new OutputStreamWriter(skt.getOutputStream())); System.out.println("Client: stream done"); } catch(IOException e){ System.out.println("Client: stream failed"); } System.out.println("Client: requesting"); try{ bw.write("Hi! I am Client!"); } catch(IOException e){ System.out.println("Client: requesting failed"); } System.out.println("Client: requesting finished"); System.out.println("Client: reading the respond"); try{ String line = null; while((line =br.readLine()) != null){ System.out.println("Client: server said- "+ line); } } catch(IOException e){ System.out.println("Client: reading failed"); } System.out.println("Client: reading fished"); System.out.println("Clientrver: is finishing"); try { br.close(); bw.close(); skt.close(); } catch (IOException e) { System.out.println("Client: finishing failed"); } System.out.println("Client: done"); } } public class Main { public static void main(String[] args) { System.out.println("Main started"); Thread sThread = new Thread(new sevr()); Thread cThread = new Thread(new clnt()); sThread.start(); cThread.start(); try { sThread.join(); cThread.join(); } catch (InterruptedException ex) { System.out.println("joining failed"); } System.out.println("Main done"); } } output: Main started Server: is about to create socket Client: about to create socket Client: socket created Client: creating streams Server: socket created Server: is listening Server: Connection Established Server: creating streams Server: stream done Server: reading the request Client: stream done Client: requesting Client: requesting finished Client: reading the respond and it waits here forever!

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• How to give position zero of spinner a prompt value?

  - by Eugene H

  The database is then transferring the data to a spinner which I want to leave position 0 blank so I can add a item to the spinner with no value making it look like a prompt. I have been going at it all day. FAil after Fail MainActivity public class MainActivity extends Activity { Button AddBtn; EditText et; EditText cal; Spinner spn; SQLController SQLcon; ProgressDialog PD; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); AddBtn = (Button) findViewById(R.id.addbtn_id); et = (EditText) findViewById(R.id.et_id); cal = (EditText) findViewById(R.id.et_cal); spn = (Spinner) findViewById(R.id.spinner_id); spn.setOnItemSelectedListener(new OnItemSelectedListenerWrapper( new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { SQLcon.open(); Cursor c = SQLcon.readData(); if (c.moveToPosition(pos)) { String name = c.getString(c .getColumnIndex(DBhelper.MEMBER_NAME)); String calories = c.getString(c .getColumnIndex(DBhelper.KEY_CALORIES)); et.setText(name); cal.setText(calories); } SQLcon.close(); // closing database } @Override public void onNothingSelected(AdapterView<?> parent) { // TODO Auto-generated method stub } })); SQLcon = new SQLController(this); // opening database SQLcon.open(); loadtospinner(); AddBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { new MyAsync().execute(); } }); } public void loadtospinner() { ArrayList<String> al = new ArrayList<String>(); Cursor c = SQLcon.readData(); c.moveToFirst(); while (!c.isAfterLast()) { String name = c.getString(c.getColumnIndex(DBhelper.MEMBER_NAME)); String calories = c.getString(c .getColumnIndex(DBhelper.KEY_CALORIES)); al.add(name + ", Calories: " + calories); c.moveToNext(); } ArrayAdapter<String> aa1 = new ArrayAdapter<String>( getApplicationContext(), android.R.layout.simple_spinner_item, al); spn.setAdapter(aa1); // closing database SQLcon.close(); } private class MyAsync extends AsyncTask<Void, Void, Void> { @Override protected void onPreExecute() { super.onPreExecute(); PD = new ProgressDialog(MainActivity.this); PD.setTitle("Please Wait.."); PD.setMessage("Loading..."); PD.setCancelable(false); PD.show(); } @Override protected Void doInBackground(Void... params) { String name = et.getText().toString(); String calories = cal.getText().toString(); // opening database SQLcon.open(); // insert data into table SQLcon.insertData(name, calories); return null; } @Override protected void onPostExecute(Void result) { super.onPostExecute(result); loadtospinner(); PD.dismiss(); } } } DataBase public class SQLController { private DBhelper dbhelper; private Context ourcontext; private SQLiteDatabase database; public SQLController(Context c) { ourcontext = c; } public SQLController open() throws SQLException { dbhelper = new DBhelper(ourcontext); database = dbhelper.getWritableDatabase(); return this; } public void close() { dbhelper.close(); } public void insertData(String name, String calories) { ContentValues cv = new ContentValues(); cv.put(DBhelper.MEMBER_NAME, name); cv.put(DBhelper.KEY_CALORIES, calories); database.insert(DBhelper.TABLE_MEMBER, null, cv); } public Cursor readData() { String[] allColumns = new String[] { DBhelper.MEMBER_ID, DBhelper.MEMBER_NAME, DBhelper.KEY_CALORIES }; Cursor c = database.query(DBhelper.TABLE_MEMBER, allColumns, null, null, null, null, null); if (c != null) { c.moveToFirst(); } return c; } } Helper public class DBhelper extends SQLiteOpenHelper { // TABLE INFORMATTION public static final String TABLE_MEMBER = "member"; public static final String MEMBER_ID = "_id"; public static final String MEMBER_NAME = "name"; public static final String KEY_CALORIES = "calories"; // DATABASE INFORMATION static final String DB_NAME = "MEMBER.DB"; static final int DB_VERSION = 2; // TABLE CREATION STATEMENT private static final String CREATE_TABLE = "create table " + TABLE_MEMBER + "(" + MEMBER_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + MEMBER_NAME + " TEXT NOT NULL," + KEY_CALORIES + " INT NOT NULL);"; public DBhelper(Context context) { super(context, DB_NAME, null, DB_VERSION); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL(CREATE_TABLE); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub db.execSQL("DROP TABLE IF EXISTS " + TABLE_MEMBER); onCreate(db); } }

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• setsockopt EOPNOTSUPP (Operation not supported)

  - by brant

  When I strace my MySQL process, I keep finding the same error over and over: setsockopt(240, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported) futex(0x87ab944, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x87ab940, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x87ab260, FUTEX_WAKE_PRIVATE, 1) = 1 select(13, [10 12], NULL, NULL, NULL) = 1 (in [12]) fcntl64(12, F_SETFL, O_RDWR|O_NONBLOCK) = 0 accept(12, {sa_family=AF_FILE, path="\246\32629iE"...}, [2]) = 803 fcntl64(12, F_SETFL, O_RDWR) = 0 getsockname(803, {sa_family=AF_FILE, path="/var/lib/mysql\1"...}, [28]) = 0 fcntl64(803, F_SETFL, O_RDONLY) = 0 fcntl64(803, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(803, F_SETFL, O_RDWR|O_NONBLOCK) = 0 setsockopt(803, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported) futex(0x87ab944, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x87ab940, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0x87ab260, FUTEX_WAKE_PRIVATE, 1) = 1 select(13, [10 12], NULL, NULL, NULL) = 1 (in [12]) fcntl64(12, F_SETFL, O_RDWR|O_NONBLOCK) = 0 accept(12, {sa_family=AF_FILE, path="\246\32629iE"...}, [2]) = 240 fcntl64(12, F_SETFL, O_RDWR) = 0 getsockname(240, {sa_family=AF_FILE, path="/var/lib/mysql\1"...}, [28]) = 0 fcntl64(240, F_SETFL, O_RDONLY) = 0 fcntl64(240, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(240, F_SETFL, O_RDWR|O_NONBLOCK) = 0 setsockopt(240, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported) When I look for running mysql processes I don't see anything out of the ordinary. I figured it might be someplace in my code, so I modified .htaccess to spit out a 502 error to prevent it from loading anything. The error still shows up, just less frequently. There have been quite a few threads that talk about this error, but no real answer as to how to solve it. my.conf, as per request: [mysqld] #skip-networking #log-slow-queries #safe-show-database #local-infile = 0 log-slow-queries = /var/log/mysql-slow.log max_connections = 200 query_cache_limit = 128643200 key_buffer_size = 1200144000 low_priority_updates = 1 concurrent_insert = 2 thread_cache_size = 7 query_cache_size = 662144000 table_cache = 1600 table_definition_cache = 1024 long_query_time = 2.5 open_files_limit = 2647 max_connect_errors=999999999

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• WebDav rename fails on an Apache mod_dav install behind NginX

  - by The Daemons Advocate

  I'm trying to solve a problem with renaming files over WebDav. Our stack consists of a single machine, serving content through Nginx, Varnish and Apache. When you try to rename a file, the operation fails with the stack that we're currently using. To connect to WebDav, a client program must: Connect over https://host:443 to NginX NginX unwraps and forwards the request to a Varnish server on http://localhost:81 Varnish forwards the request to Apache on http://localhost:82, which offers a session via mod_dav Here's an example of a failed rename: $ cadaver https://webdav.domain/ Authentication required for Webdav on server `webdav.domain': Username: user Password: dav:/> cd sandbox dav:/sandbox/> mkdir test Creating `test': succeeded. dav:/sandbox/> ls Listing collection `/sandbox/': succeeded. Coll: test 0 Mar 12 16:00 dav:/sandbox/> move test newtest Moving `/sandbox/test' to `/sandbox/newtest': redirect to http://webdav.domain/sandbox/test/ dav:/sandbox/> ls Listing collection `/sandbox/': succeeded. Coll: test 0 Mar 12 16:00 For more feedback, the WebDrive windows client logged an error 502 (Bad Gateway) and 303 (?) on the rename operation. The extended logs gave this information: Destination URI refers to different scheme or port (https://hostname:443) (want: http://hostname:82). Some other Restrictions: Investigations into NginX's Webdav modules show that it doesn't really fit our needs, and forwarding webdav traffic to Apache isn't an option because we don't want to enable Apache SSL. Are there any ways to trick mod_dav to forward to another host? I'm open to ideas :).

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• Bash mine script, please

  - by HomelyPoet

  The script, in and of its self, is fairly self-explanatory. Use if You so desire; any and all criticism wouldst be appreciated, as wouldst any suggestions for improvement. First iteration was writ upon OS X 10.5.8 Leopard, current iteration was run upon OS X 10.6.4 Snow Leopard with Safari 5.0.2 (6533.18.5). Also, any illumination as to why the first line ' if [ -f ] ' works, but ' if [ -f ~/Library/Safari/LocalStorage/*.localstorage ] ' generates an error? [yes, I am a bit of a Noob] Code: #! /bin/bash # SafariClear0.0.6 if [ -f ] then cat /dev/null > ~/Library/Safari/LocalStorage/*.localstorage rm -f ~/Library/Safari/LocalStorage/*.localstorage fi if [ -f ~/Library/Safari/LocalStorage/*.localstorage ] then echo "Oy vey!" fi cd ~/Library/Safari/ cat /dev/null > WebpageIcons.db cat /dev/null > TopSites.plist cat /dev/null > LocationPermissions.plist cat /dev/null > LastSession.plist cat /dev/null > History.plist echo "Clear" exit

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• OpenSSL response 404 issue on centOS 6

  - by dsp_099

  I followed this tutorial (though it's for 5.2, I figured I'd be alright). The changes I had to make that seemed to have worked: Rename ca.csr to ca.cslr (that's the one the command generated) List it in the ssl.conf as ca.cslr instead of ca.csr I have the following in the httpd.conf <VirtualHost *:80> DocumentRoot /etc/test ServerName site.com </VirtualHost> <VirtualHost *:433> SSLEngine on SSLCertificateFile /etc/pki/tls/certs/ca.crt SSLCertificateKeyFile /etc/pki/tls/private/ca.key <Directory /etc/test> AllowOverride All </Directory> DocumentRoot /etc/test ServerName cryptokings.com </VirtualHost> /test contains a folder inside of it, accessible via http://site.com/test/foo, however attempting to access it via https://site.com/test/foo results in warning that the certificate is untrusted (self-signed, no biggie) a 404 error. Chrome's complains about the certificate are the following: The identity of this website has not been verified. • Server's certificate does not match the URL. • Server's certificate is not trusted. I think those warnings are a side-effect of a self-signed certificate - or is the first one something that needs to be addressed? I seem to be able fetch the root page via https just fine though, it shows a standard CentOS setup page. (That said, I haven't added a VirtualHost entry for it so I suppose that makes sense) I think I've made a mistake somewhere during the setup as I'm not too familiar with the process. During setup, I was prompted for a type of password that would be required when apache restarts but running service httpd restart does not seem to prompt me for one. Any help would be appreciated.

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• MSDTC - Communication with the underlying transaction manager has failed (Firewall open, MSDTC network access on)

  - by SocialAddict

  I'm having problems with my ASP.NET web forms system. It worked on our test server but now we are putting it live one of the servers is within a DMZ and the SQL server is outside of that (on our network still though - although a different subnet) I have open up the firewall completely between these two boxes to see if that was the issue and it still gives the error message "Communication with the underlying transaction manager has failed" whenever we try and use the "TransactionScope". We can access the data for retrieval it's just transactions that break it. We have also used msdtc ping to test the connection and with the amendments on the firewall that pings successfully, but the same error occurs! How do i resolve this error? Any help would be great as we have a system to go live today. Panic :) Edit: I have created a more straightforward test page with a transaction as below and this works fine. Could a nested transaction cause this kind of error and if so why would this only cause an issue when using a live box in a dmz with a firewall? AuditRepository auditRepository = new AuditRepository(); try { using (TransactionScope scope = new TransactionScope()) { auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#1", 1); auditRepository.Save(); auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#2", 1); auditRepository.Save(); scope.Complete(); } } catch (Exception ex) { Response.Write("Test Error For Transaction: " + ex.Message + "<br />" + ex.StackTrace); }

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• Debugging "clogged" TCP connections

  - by Nikratio

  I'm having trouble with an internet connection that seems to randomly "freeze" arbitrary tcp connections. The connections stay established, but no data is coming through. When this happens, netstat still shows the connection status as ESTABLISHED on both the local computer: Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name Timer tcp 0 53 192.168.0.10:41129 173.255.235.238:143 ESTABLISHED 8219/gnutls-cli on (79.31/13/0) ..and the remote server: Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name Timer tcp 0 0 173.255.235.238:143 68.5.174.98:41129 ESTABLISHED 5303/imapd off (0.00/0/0) However, it seems that no data at all is transferred. If I run strace on the local and remote process, both just show a repeating sequence of select calls (with different fds of course), e.g. select(6, [0 5], NULL, NULL, {0, 50000}) = 0 (Timeout) select(6, [0 5], NULL, NULL, {0, 50000}) = 0 (Timeout) select(6, [0 5], NULL, NULL, {0, 50000}) = 0 (Timeout) The internet connection overall does not seem affected, I can still establish new connections to the same service on the same server without any problems. However, the affected local applications seem to be unaware of the problem and just hang. When I look at a packet capture of this connection on the client side, the last thing that happens is that the client transmits some data, then nothing happens for about 1100 seconds, and then several TCP Retransmission requests go out, with intervals increasing from 4 seconds to 130 seconds. No activity is captured after that. After about 10 minutes, the connection on the remote end disappears from the netstat (I wasn't able to catch any intermediate state), but still stays ESTABLISHED on the local end. Finally, after some more minutes, the local application aborts with a timeout and disappears from the local netstat output as well. Does anyone have a suggestion of how I could debug this further to find out where the problem lies and how to fix it? Additionaly and/or as a temporary workaround: is is there some way to globally reduce the timeout on client and/or server to reduce the time before the local application aborts?

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• Apache2 - Hosting two sites on the same domain with different ports

  - by user1026361

  I am hosting a staging site (test.mydomain.com) which currently work well on port 80 for two sites (test.mydomain.com and test.FRmydomain.com) I am working on a new backend and I would like to deploy a third site on this server for testing. My hope is that it will live at test.mydomain.com:4204. I've got some experience with apache and quickly added statements: Listen 4204 NameVirtualHost *:4204 and created a new config for my site. What I imagine are the relevant parts of my config: <VirtualHost *:4204 > ServerAdmin [email protected] ServerName test.mydomain.com:4204 However, the site is not publicly available, by name or ip. If i curl localhost:4204 from the server, I get the expected page content At this point, I'm a bit of a loss on how to go forwards. It seems like my config is correct but not available to be served. Am I better off defining a proxy definition so that, for instance: test.mydomain.com/4204 proxies to my localhost server or is there a way to make the site available via the internet? EDIT: I have added an iptable rule after further Googling with the command: iptables -I INPUT -p tcp --dport 4204 -j ACCEPT I can see apache listening on 4204 and the rule is definitely in place but cant reach the site

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