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  • initWithCoder and initWithNibName

    - by vodkhang
    I am trying to encode some data state in a UITableViewController. In the first time, I init the object with Nibname without any problem. However, when I initWithCoder, the UITableViewController still loads but when I clicked on a cell, the application crash and the debugger tells me about EXEC_BAD_ACCESS, something wrong with my memory, but I do not know Here is my code: - (id) init { if(self = [self initWithNibName:@"DateTableViewController" bundle:nil]) { self.dataArray = [[NSMutableArray alloc] initWithObjects:@"1", @"2", @"3", nil]; } return self; } // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } // Set up the cell... int index = indexPath.row; cell.textLabel.text = [self.dataArray objectAtIndex:index];; return cell; } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { return @"Test Archiver"; } - (void)encodeWithCoder:(NSCoder *)coder { [super encodeWithCoder:coder]; [coder encodeObject:self.dataArray]; } - (id)initWithCoder:(NSCoder *)coder { return [self init]; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { int index = indexPath.row; [self.dataArray addObject:[NSString stringWithFormat:@"Hello %d", index]]; [self.tableView reloadData]; }

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  • PHP Multiple Calls to Server Share Objects?

    - by user1513171
    I’m wondering this about PHP on Apache. Do multiple calls to the server from different users—could be sitting next to each other, in different states, different countries, etc…—share memory? For example, if I create a static variable in a PHP script and set it to 1 by default, then user1 comes in and it changes to 2, and then almost at the exactly same time, user2 comes in, does he see that static variable with a value of 1 or 2? An even better example is this class I have in PHP: class ApplicationRegistry { private static $instance; private static $PDO; private function __construct() { self::$PDO = $db = new \PDO('mysql:unix_socket=/........'); self::$PDO->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION); } static function instance() { if(!isset(self::$instance)) { self::$instance = new self(); } return self::$instance; } static function getDSN() { if(!isset(self::$PDO)) { self::instance(); return self::$PDO; } return self::$PDO; } } So this is a Singleton that has a static PDO instance. If user1 and user2 are hitting the server at the exact same time are they using different instances of PDO or are they using the same one? This is a confusing concept for me and I'm trying to think of how my application will scale.

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  • Error Ant Build/deploy to websphere 7.0

    - by adisembiring
    Hi I'm trying to build/deploy war to websphere process server 7.0. and I run on windows environment. I use http://illegalargumentexception.blogspot.com/2008/08/ant-automated-deployment-to-websphere.html as my reference. and http://illegalargumentexception.googlecode.com/svn/trunk/code/java/WebSphereAntFiles/ as my sample code to deployed. this is my buil.properies is ? #build properties mywebappear=D:/data/code/WebSphereAntFiles/scripts/test/mywebappEAR.ear #WAS6 install directory was_home=C:/IBM/WID7_WTE/runtimes/bi_v7 #server name (see cell/node/server; e.g. "server1") was_server=server1 #user + password; for use when security is enabled was_user=admin was_password=admin #stops scripts on problem was_failonerror=true #virtual host was_virtualhost=default_host #Absolute path to EAR file #was_ear=fooEAR.ear #Name of the enterprise application #was_appname=fooEAR this is my console while I trying to build with ws_ant.bat [wsDefaultBindings] mywebapp.war [wsDefaultBindings] <virtual-host> --> default_host [wsDefaultBindings] [wsDefaultBindings] ------------------------ [wsDefaultBindings] Saving EAR File to directory [wsDefaultBindings] Saved EAR File to directory Successfully test_wsStartServer: WAS_wsStartServer: depCheck: depCheck: [startServer] ADMU0116I: Tool information is being logged in file [startServer] C:\IBM\WID7_WTE\runtimes\bi_v7\profiles\qwps\logs\server1\startServer.log [startServer] ADMU0128I: Starting tool with the qwps profile [startServer] ADMU3100I: Reading configuration for server: server1 [startServer] ADMU3028I: Conflict detected on port 8880. Likely causes: a) An instance of [startServer] the server server1 is already running b) some other process is [startServer] using port 8880 [startServer] ADMU3027E: An instance of the server may already be running: server1 [startServer] ADMU0111E: Program exiting with error: [startServer] com.ibm.websphere.management.exception.AdminException: ADMU3027E: An [startServer] instance of the server may already be running: server1 [startServer] ADMU1211I: To obtain a full trace of the failure, use the -trace option. [startServer] ADMU0211I: Error details may be seen in the file: [startServer] C:/IBM/WID7_WTE/runtimes/bi_v7/profiles/qwps\logs\server1\startServer.log BUILD FAILED D:\data\code\WebSphereAntFiles\scripts\test\build.xml:68: The following error occurred while executing this line: D:\data\code\WebSphereAntFiles\scripts\was\wsStartServer.xml:49: Java returned: -1

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  • theoretical and practical matrix multiplication FLOP

    - by mjr
    I wrote traditional matrix multiplication in c++ and tried to measure and compare its theoretical and practical FLOP. As I know inner loop of MM has 2 operation therefore simple MM theoretical Flops is 2*n*n*n (2n^3) but in practice I get something like 4n^3 + number of operation which is 2 i.e. 6n^3 also if I just try to add up only one array a[i][j]++ practical flops then calculate like 3n^3 and not n^3 as you see again it is 2n^3 +1 operation and not 1 operation * n^3 . This is in case if I use 1D array in three nested loops as Matrix multiplication and compare flop, practical flop is the same (near) the theoretical flop and depend exactly as the number of operation in inner loop.I could not find the reason for this behaviour. what is the reason in both case? I know that theoretical flop is not the same as practical one because of some operations like load etc. system specification: Intel core2duo E4500 3700g memory L2 cache 2M x64 fedora 17 sample results: Matrix matrix multiplication 512*512 Real_time: 1.718368 Proc_time: 1.227672 Total flpops: 807,107,072 MFLOPS: 657.429016 Real_time: 3.608078 Proc_time: 3.042272 Total flpops: 807,024,448 MFLOPS: 265.270355 theoretical flop: 2*512*512*512=268,435,456 Practical flops= 6*512^3 =807,107,072 Using 1 dimensional array float d[size][size]:512 or any size for (int j = 0; j < size; ++j) { for (int k = 0; k < size; ++k) { d[k]=d[k]+e[k]+f[k]+g[k]+r; } } Real_time: 0.002288 Proc_time: 0.002260 Total flpops: 1,048,578 MFLOPS: 464.027161 theroretical flop: *4n^2=4*512^2=1,048,576* practical flop : 4n^2+overhead (other operation?)=1,048,578 3 loop version: Real_time: 1.282257 Proc_time: 1.155990 Total flpops: 536,872,000 MFLOPS: 464.426117 theoretical flop:4n^3 = 536,870,912 practical flop: *4n^3=4*512^3+overheads(other operation?)=536,872,000* thank you

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  • sqlite3 update text in uitextview

    - by summer
    i had the sqlite statement ready for update..but i am confuse about grabbing text from uitextview and updating it..and i waned to update it using a uibutton..how do i carry on after creating the sql statement???kinda lost..any new solution is appreciate.. - (void) saveAllData { if(isDirty) { if(updateStmt == nil) { const char *sql = "update Snap Set snapTitle = ?, snapDesc = ?, Where snapID = ?"; if(sqlite3_prepare_v2(database, sql, -1, &updateStmt, NULL) != SQLITE_OK) NSAssert1(0, @"Error while creating update statement. '%s'", sqlite3_errmsg(database)); } sqlite3_bind_text(updateStmt, 1, [snapTitle UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(updateStmt, 2, [snapDescription UTF8String], -2, SQLITE_TRANSIENT); sqlite3_bind_int(updateStmt, 3, snapID); if(SQLITE_DONE != sqlite3_step(updateStmt)) NSAssert1(0, @"Error while updating. '%s'", sqlite3_errmsg(database)); sqlite3_reset(updateStmt); isDirty = NO; } //Reclaim all memory here. [snapTitle release]; snapTitle = nil; [snapDescription release]; snapDescription = nil; //isDetailViewHydrated = NO; }

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  • IoC - Dynamic Composition of object instances

    - by Joshua Starner
    Is there a way using IoC, MEF [Imports], or another DI solution to compose dependencies on the fly at object creation time instead of during composition time? Here's my current thought. If you have an instance of an object that raises events, but you are not creating the object once and saving it in memory, you have to register the event handlers every time the object is created. As far as I can tell, most IoC containers require you to register all of the classes used in composition and call Compose() to make it hook up all the dependencies. I think this may be horrible design (I'm dealing with a legacy system here) to do this due to the overhead of object creation, dependency injection, etc... but I was wondering if it was possible using one of the emergent IoC technologies. Maybe I have some terminology mixed up, but my goal is to avoid writing a framework to "hook up all the events" on an instance of an object, and use something like MEF to [Export] handlers (dependencies) that adhere to a very specific interface and [ImportMany] them into an object instance so my exports get called if the assemblies are there when the application starts. So maybe all of the objects could still be composed when the application starts, but I want the system to find and call all of them as the object is created and destroyed.

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  • StarTeam trunk.

    - by Nix
    I have the unfortunate opportunity of source control via Borland's StarTeam. It unfortunately does very few things well, and one supreme weakness is its view management. I love SVN and come from an SVN mindset. Our issue is post production release we are spending countless hours merging changes into a "production support" environment. Please do not harass me this was not my doing, I inherited it and am trying to present a better way of managing the repository. It is not an option to switch to a different SCM tool. Current setup Product.1.0 (TRUNK, current production code, and at this level are pending bug fixes) Product.2.0(true trunk anything checked in gets tested, and then released next production cycle, a lot of changes occur in this view) My proposal is going to be to swap them, have all development be done on the trunk (Production), tag on releases, and as needed create child views to represent production support bug fixes. Production Production.2.0.SP.1 I can not find any documentation to support the above proposal so I am trying to get feedback on whether or not the change is a good idea and if there is anything you would recommend doing differently.

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  • Oracle rownum in db2 - Java data archiving

    - by HonorGod
    I have a data archiving process in java that moves data between db2 and sybase. FYI - This is not done through any import/export process because there are several conditions on each table that are available on run-time and so this process is developed in java. Right now I have single DatabaseReader and DatabaseWriter defined for each source and destination combination so that data is moved in multiple threads. I guess I wanted to expand this further where I can have Multiple DatabaseReaders and Multiple DatabaseWriters defined for each source and destination combination. So, for example if the source data is about 100 rows and I defined 10 readers and 10 writer, each reader will read 10 rows and give them to the writer. I hope process will give me extreme performance depending on the resources available on the server [CPU, Memory etc]. But I guess the problem is these source tables do not have primary keys and it is extremely difficult to grab rows in multiple sets. Oracle provides rownum concept and i guess the life is much simpler there....but how about db2? How can I achieve this behavior with db2? Is there a way to say fetch first 10 records and then fetch next 10 records and so on? Any suggestions / ideas ? Db2 Version - DB2 v8.1.0.144 Fix Pack Num - 16 Linux

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  • FOR BOUNTY: "QFontEngine(Win) GetTextMetrics failed ()" error on 64-bit Windows

    - by David Murdoch
    I'll add a large bounty to this when Stack Overflow lets me. I'm using wkhtmltopdf to convert HTML web pages to PDFs. This works perfectly on my 32-bit dev server [unfortunately, I can't ship my machine :-p ]. However, when I deploy to the web application's 64-bit server the following errors are displayed: C:\>wkhtmltopdf http://www.google.com google.pdf Loading pages (1/5) QFontEngine::loadEngine: GetTextMetrics failed () ] 10% QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngine::loadEngine: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () QFontEngine::loadEngine: GetTextMetrics failed () ] 36% QFontEngineWin: GetTextMetrics failed () QFontEngineWin: GetTextMetrics failed () // ...etc.... and the PDF is created and saved... just WITHOUT text. All form-fields, images, borders, tables, divs, spans, ps, etc are rendered accurately...just void of any text at all. Server information: Windows edition: Windows Server Standard Service Pack 2 Processor: Intel Xeon E5410 @ 2.33GHz 2.33 GHz Memory: 8.00 GB System type: 64-bit Operating System Can anyone give me a clue as to what is happening and how I can fix this? Also, I wasn't sure what to tag/title this question with...so if you can think of better tags/title comment them or edit the question. :-)

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  • Static Data Structures on Embedded Devices (Android in particular)

    - by Mark
    I've started working on some Android applications and have a question regarding how people normally deal with situations where you have a static data set and have an application where that data is needed in memory as one of the standard java collections or as an array. In my current specific issue i have a spreadsheet with some pre-calculated data. It consists of ~100 rows and 3 columns. 1 Column is a string, 1 column is a float, 1 column is an integer. I need access to this data as an array in java. It seems like i could: 1) Encode in XML - This would be cpu intensive to decode in my experience. 2) build into SQLite database - seems like a lot of overhead for static access to data i only need array style access to in ram. 3) Build into binary blob and read in. (never done this in java, i miss void *) 4) Build a python script to take the CSV version of my data and spit out a java function that adds the values to my desired structure with hard coded values. 5) Store a string array via androids resource mechanism and compute the other 2 columns on application load. In my case the computation would require a lot of calls to Math.log, Math.pow and Math.floor which i'd rather not have to do for load time and battery usage reasons. I mostly work in low power embedded applications in C and as such #4 is what i'm used to doing in these situations. It just seems like it should be far easier to gain access to static data structures in java/android. Perhaps I'm just being too battery usage conscious and in my single case i imagine the answer is that it doesn't matter much, but if every application took that stance it could begin to matter. What approaches do people usually take in this situation? Anything I missed?

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  • Rails deployment strategies with Bundler and JRuby

    - by brad
    I have a jruby rails app and I've just started using bundler for gem dependency management. I'm interested in hearing peoples' opinions on deployment strategies. The docs say that bundle package will package your gems locally so you don't have to fetch them on the server (and I believe warbler does this by default), but I personally think (for us) this is not the way to go as our deployed code (in our case a WAR file) becomes much larger. My preference would be to mimic our MVN setup which fetches all dependencies directly on the server AFTER the code has been copied there. Here's what I'm thinking, all comments are appreciated: Step1: Build war file, copy to server Step2: Unpack war on server, fetch java dependencies with mvn Step3: use Bundler to fetch Gem deps (Where should these be placed??) * Step 3 is the step I'm a bit unclear on. Do I run bundle install with a particular target in mind?? Step4: Restart Tomcat Again my reasoning here is that I'd like to keep the dependencies separate from the code at deploy time. I'd also like to place all gem dependencies in the app itself so they are contained, rather than installing them in the app user's home directory (as, again, I believe is the default for Bundler)

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  • Am I deleting this properly?

    - by atch
    I have some struct: struct A { const char* name_; A* left_; A* right_; A(const char* name):name_(name), left_(nullptr), right_(nullptr){} A(const A&); //A(const A*);//ToDo A& operator=(const A&); ~A() { /*ToDo*/ }; }; /*Just to compile*/ A& A::operator=(const A& pattern) { //check for self-assignment if (this != &pattern) { void* p = new char[sizeof(A)]; } return *this; } A::A(const A& pat) { void* p = new char[sizeof(A)]; A* tmp = new (p) A("tmp"); tmp->~A(); delete tmp;//I WONDER IF HERE I SHOULD USE DIFFERENT delete[]? } int _tmain(int argc, _TCHAR* argv[]) { A a("a"); A b = a; cin.get(); return 0; } Guys I know this is far from ideal and far from finished. But please don't tell me the answer how to do it properly. I'm trying to figure it out myself. The only think I would like to know if I'm deleting my memory in proper way. Thanks.

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  • EXC_BAD_ACCESS when executing ABAddressBookSave !

    - by Horatiu Paraschiv
    Hi everybody, I'm trying to create a new contact and add it to the AddressBook but when I get to the ABAddressSave line of code I get EXC_BAD_ACCESS. I cannot see what am I doing wrong, I enabled NSZombie to check if this is a memory related error but it didn't spot any. Can anybody tell me what is wrong with this code? Thank you in advance! CFErrorRef error = NULL; ABAddressBookRef iPhoneAddressBook = ABAddressBookCreate(); ABRecordRef newRecord = ABPersonCreate(); ABRecordSetValue(newRecord, kABPersonFirstNameProperty, @"Xxxxxx", &error); ABRecordSetValue(newRecord, kABPersonURLProperty, @"Yyyyyy", &error); //Add phone numbers to record ABMutableMultiValueRef phones = ABMultiValueCreateMutable(kABMultiStringPropertyType); ABMultiValueAddValueAndLabel(phones, @"1-555-555-5555", kABWorkLabel, NULL); ABRecordSetValue(newRecord, kABPersonPhoneProperty, phones, &error); CFRelease(phones); //Add email address to record ABMutableMultiValueRef emails = ABMultiValueCreateMutable(kABMultiStringPropertyType); ABMultiValueAddValueAndLabel(emails, @"[email protected]", kABWorkLabel, NULL); ABRecordSetValue(newRecord, kABPersonEmailProperty, emails, &error); CFRelease(emails); ABMutableMultiValueRef multiAddress = ABMultiValueCreateMutable(kABMultiDictionaryPropertyType); NSMutableDictionary *addressDict = [[NSMutableDictionary alloc] init]; [addressDict setObject:@"xxx1" forKey:(NSString *)kABPersonAddressStreetKey]; [addressDict setObject:@"xxx2" forKey:(NSString *)kABPersonAddressCityKey]; [addressDict setObject:@"xxx3" forKey:(NSString *)kABPersonAddressStateKey]; [addressDict setObject:@"xxx4" forKey:(NSString *)kABPersonAddressZIPKey]; ABMultiValueAddValueAndLabel(multiAddress, addressDict, kABWorkLabel, NULL); ABRecordSetValue(newRecord, kABPersonAddressProperty, multiAddress, &error); CFRelease(multiAddress); [addressDict release]; ABAddressBookAddRecord(iPhoneAddressBook, newRecord, &error); ABAddressBookSave(iPhoneAddressBook, NULL); if(error != nil){ NSLog(@"Error creating contact:%@", error); }

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  • Cannot enlist Synchronization. LocalTransactionCoordinator is completing or completed issue with hib

    - by Bijendra Singh
    I am getting Cannot enlist Synchronization. LocalTransactionCoordinator is completing or completed exception when integrating my method is called from the portlet. I am using spring transaction management for handling all the hibernate transaction in the spring configuration file through AOP. When I run my hibernate dao method for persisting the data through Junit its working fine. Exception description: I am facing an issue that is when I run my code through unit test case data is getting updated in database properly but when I run the same code with integration with portlet my code is executing finely but after the completion of transaction the records is not getting updated to database. The following error can be seen in the log which is [4/7/10 23:06:38:685 MDT] 0000006c LocalTranCoor E WLTC0014E: Cannot enlist Synchronization. LocalTransactionContainment is completing or completed. [4/7/10 23:06:38:689 MDT] 0000006c LocalTransact E J2CA0026E: Method addSync caught java.lang.IllegalStateException: Cannot enlist Synchronization. LocalTransactionCoordinator is completing or completed. at com.ibm.ws.LocalTransaction.LocalTranCoordImpl.enlistSynchronization(LocalTranCoordImpl.java(Compiled Code)) at com.ibm.ejs.j2c.LocalTransactionWrapper.addSync(LocalTransactionWrapper.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.initializeForUOW(ConnectionManager.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.involveMCInTran(ConnectionManager.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.associateConnection(ConnectionManager.java(Compiled Code)) at com.ibm.ejs.j2c.ConnectionManager.associateConnection(ConnectionManager.java(Compiled Code)) at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.reactivate(WSJdbcConnection.java(Compiled Code)) at com.ibm.ws.rsadapter.jdbc.WSJdbcConnection.getWarnings(WSJdbcConnection.java:1539)

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  • Best way to manipulate and compare strings

    - by vtortola
    I'm developing a REST service, so a request could be something like this: /Data/Main/Table=Customers/ I need to get the segments one by one, and for each segment I will decide wich object I'm going to use, after I'll pass to that object the rest of the query so it can decide what to do next. Basically, the REST query is a path on a tree :P This imply lots String operations (depending on the query complexity), but StringBuilder is useful just for concatenations and remove, you cannot perform a search with IndexOf or similar. I've developed this class that fulfill my requirement, but the problem is that is manipulating Strings, so every time I get one segment ... I'll create extra Strings because String is an inmutable data type: public class RESTQueryParser { String _query; public RESTQueryParser(String query) { _query = query; } public String GetNext() { String result = String.Empty; Int32 startPosition = _query.StartsWith("/", StringComparison.InvariantCultureIgnoreCase) ? 1 : 0; Int32 i = _query.IndexOf("/", startPosition, StringComparison.InvariantCultureIgnoreCase) - 1; if (!String.IsNullOrEmpty(_query)) { if (i < 0) { result = _query.Substring(startPosition, _query.Length - 1); _query = String.Empty; } else { result = _query.Substring(startPosition, i); _query = _query.Remove(0, i + 1); } } return result; } } The server should support a lot of calls, and the queries could be huge, so this is gonna be a very repetitive task. I don't really know how big is the impact on the memory and the performance, I've just readed about it in some books. Should I implement a class that manage a Char[] instead Strings and implement the methods that I want? Or should be ok with this one? Regular expressions maybe?

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  • Joining on a common table, how do you get a FULL OUTER JOIN to expand on another table?

    - by stimpy77
    I've scoured StackOverflow and Google for an answer to this problem. I'm trying to create a Microsot SQL Server 2008 view. Not a stored procedure. Not a function. Just a query (i.e. a view). I have three tables. The first table defines a common key, let's say "CompanyID". The other two tables have a sometimes-common field, let's say "EmployeeName". I want a single table result that, when my WHERE clause says "WHERE CompanyID = 12" looks like this: CompanyID | TableA | TableB 12 | John Doe | John Doe 12 | Betty Sue | NULL 12 | NULL | Billy Bob I've tried a FULL OUTER JOIN that looks like this: SELECT Company.CompanyID, TableA.EmployeeName, TableB.EmployeeName FROM Company FULL OUTER JOIN TableA ON Company.CompanyID = TableA.CompanyID FULL OUTER JOIN TableB ON Company.CompanyID = TableB.CompanyID AND (TableA.EmployeeName IS NULL OR TableB.EmployeeName IS NULL OR TableB.EmployeeName = TableA.EmployeeName) I'm only getting the NULL from one matched table, I'm not getting the expansion for the other table. In the above sample, I'm basically only getting the first and third rows and not the second. Can someone help me create this query and show me how this is done correctly? BTW I already have a stored procedure that looks very clean and populates an in-memory table, but that isn't what I want. Thanks.

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  • java distributed cache for low latency, high availability

    - by Shahbaz
    I've never used distributed caches/DHTs like memcached, jboss cache, ehcache, etc. I'm wondering which, if any, is appropriate for my use. First, I'm not doing web applications (as most of these project seem to be geared towards web apps). I write servers (Order Management Systems actually) for financial trading firms. The servers themselves are not too complicated. They need to receive information (market data, orders, executions, etc.) rout them to their destination while possibly transforming some of these messages. I am looking at these products to solve the following problems: * Safe repository of the state of the server. I'd rather build the logic of my application as a bunch of transformers (similar to Apache Camel) and store the state in a 'safe' place * This repository should be distributed: in case one of these data stores crashes, one or two more should be up and I should be able to switch to them seamlessly * This repository should be fast. Single digits milliseconds count here, in other words, systems which consume/process this data are automated systems, not humans clicking on links. This system needs to have high-throughput and low latency. By sending my data outside the process, I am necessarily slowing performance, but I am trying to balance absolute raw speed and absolute protection of data. * This repository should be safe. Similar to the point about several on-line backups, this system needs to write data to disk (potentially more than one disk). I'd really like to stop writing my own 'transaction servers.' Am I correct to be looking into projects such as jboss cache, ehcache, etc.? Thanks

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  • Windows Azure DownloadtoStream EOF error

    - by david
    Hello, I've been using Windows Azure to create a document management system, and things have gone well so far. I've been able to upload and download files to the BLOB storage through an asp.net front end. What I'm attempting to do now is allow users to upload a .zip file, and then take the files out of that .zip and save them as individual files. Problem is, I'm getting "ZipException was unhandled" "EOF in header" and I don't know why. I'm using the ICSharpCode.SharpZipLib library which I've used for many other tasks and its worked great. Here's the basic code: CloudBlob ZipFile = container.GetBlobReference(blobURI); MemoryStream MemStream = new MemoryStream(); ZipFile.DownloadToStream(MemStream); .... while ((theEntry = zipInput.GetNextEntry()) != null) and it's on the line that starts with while that I get the error. I added a sleep duration of 10 seconds just to make sure enough time had gone by. MemStream has a length if I debug it, but the zipInput does sometimes, but not always. It always fails. Thanks for any help. Dave

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  • Required Working Precision for the BBP Algorithm?

    - by brainfsck
    Hello, I'm looking to compute the nth digit of Pi in a low-memory environment. As I don't have decimals available to me, this integer-only BBP algorithm in Python has been a great starting point. I only need to calculate one digit of Pi at a time. How can I determine the lowest I can set D, the "number of digits of working precision"? D=4 gives me many correct digits, but a few digits will be off by one. For example, computing digit 393 with precision of 4 gives me 0xafda, from which I extract the digit 0xa. However, the correct digit is 0xb. No matter how high I set D, it seems that testing a sufficient number of digits finds an one where the formula returns an incorrect value. I've tried upping the precision when the digit is "close" to another, e.g. 0x3fff or 0x1000, but cannot find any good definition of "close"; for instance, calculating at digit 9798 gives me 0xcde6 , which is not very close to 0xd000, but the correct digit is 0xd. Can anyone help me figure out how much working precision is needed to calculate a given digit using this algorithm? Thank you,

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  • Problem with apostrophes and other special characters when using aspell in windows

    - by Loftx
    Hi there, We seem to be having a problem with the spell checker on our content management system where it marks the ve part of We’ve as a misspelling. The spellchecker uses aspell which is called from a script on the server which executes the cmd.exe and uses it to pipe a file into aspell (it's a long winded way I know, but our server side programming langauge (ColdFusion) doesn't support writing to stdin for executables). Aspell is called by executing: c:\windows\system32\cmd.exe /c type d:\path_to_file\file.txt | "C:\Program Files\Aspell\bin\aspell" --lang=en -a Where file.txt contains the text to be spelled e.g. ^Oh have We’ve (the carat is added to prevent piping problems I believe). Aspell then output: @(#) International Ispell Version 3.1.20 (but really Aspell 0.50.3) * * * & ve 62 12: vie, voe, V, v, veg, vet, Be, Ce, be, Ev, E, e, vex, VA, VI, Va, Vi, vi, we, VD, VF, VG, VJ, VP, VT, Vt, vb, vs, DE, De, Fe, GE, Ge, He, IE, Le, ME, Me, NE, Ne, OE, PE, Re, SE, Se, Te, Xe, he, me, re, ye, Ave, Eve, Ive, ave, eve, VAR, var, veer, vier, view, vow However, we have a dev site, with the same version of Aspell, and when the same file is used it outputs with no misspellings. Both servers are running Aspell 0.50.3 on Windows server 2003, but there could be other differences in configuration: @(#) International Ispell Version 3.1.20 (but really Aspell 0.50.3) I'm wondering if the problem is to do with the piping part of the process or something different in the Aspell configuration. Does anyone have any ideas? Cheers, Tom

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  • Create Keyword Object Perl Microsoft::AdCenter

    - by toobsco42
    So I looked at the perldoc for the Microsoft::AdCenter module and it shows this as an example of how to create a keyword object: ~$ perldoc Microsoft::AdCenter #Create a Keyword object my $keyword = Microsoft::AdCenter::V7::CampaignManagementService::Keyword->new ->Text("some text") ->BroadMatchBid(Microsoft::AdCenter::V7::CampaignManagementService::Bid->new->Amount(0.1)) ->ExactMatchBid(Microsoft::AdCenter::V7::CampaignManagementService::Bid->new->Amount(0.1)); However, doesn't this violate the new policy of using only one match type per keyword? Campaign Management changes: "Previously, you would create a single Keyword object and specify a bid value for each match that you wanted to bid on (for example, exact match or phrase match). If you did not specify a bid value at the keyword-level, adCenter used the default bid value specified at the ad group level. Now, you must create a Keyword object for each match type that you want to bid on. For example, to bid on the keyword car by using exact match and phrase match, create a Keyword object and set the Text element to car and the ExactMatchBid element to a bid amount. Then, create a second Keyword object and set the Text element to car and PhraseMatchBid to a bid amount. When you add the keywords, you’ll get a unique keyword ID for each keyword and match-type combination."

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  • How can I get PowerShell Added-Types to use Added References

    - by Scott Weinstein
    I'm working on a PoSh project that generates CSharp code, and then Add-Types it into memory. The new types use existing types in an on disk DLL, which is loaded via Add-Type. All is well and good untill I actualy try to invoke methods on the new types. Here's an example of what I'm doing: $PWD = "." rm -Force $PWD\TestClassOne* $code = " namespace TEST{ public class TestClassOne { public int DoNothing() { return 1; } } }" $code | Out-File tcone.cs Add-Type -OutputAssembly $PWD\TestClassOne.dll -OutputType Library -Path $PWD\tcone.cs Add-Type -Path $PWD\TestClassOne.dll $a = New-Object TEST.TestClassOne "Using TestClassOne" $a.DoNothing() "Compiling TestClassTwo" Add-Type -Language CSharpVersion3 -TypeDefinition " namespace TEST{ public class TestClassTwo { public int CallTestClassOne() { var a = new TEST.TestClassOne(); return a.DoNothing(); } } }" -ReferencedAssemblies $PWD\TestClassOne.dll "OK" $b = New-Object TEST.TestClassTwo "Using TestClassTwo" $b.CallTestClassOne() Running the above script gives the following error on the last line: Exception calling "CallTestClassOne" with "0" argument(s): "Could not load file or assembly 'TestClassOne,...' or one of its dependencies. The system cannot find the file specified." At AddTypeTest.ps1:39 char:20 + $b.CallTestClassOne <<<< () + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : DotNetMethodException What am I doing wrong?

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  • Question - Setting dynamic HTML using Javascript to iFrames on Windows Mobile 6.1 - IE Mobile6

    - by swaroop
    Hi Experts, (excuse me if this is not the right forum to post - i couldn't find anything related to non-native programming and related to this topic) I Am trying to set a dynamic HTML into an iFrame on the webpage. I have tried a couple of things but none of them seem to work. I m able to read the innerHTML but can't seem to update it. // Able to read using document.getElementById('iFrameIdentifier').innerHTML; // On Desktop IE, this code works document.getElementById('iFrameId').contentWindow.document.open(); document.getElementById('iFrameId').contentWindow.document.write(dynamicHTML); document.getElementById('iFrameId').contentWindow.document.close(); Ideally the same function should work as how it works for div's but it says 'Object doesn't support this method or property". I have also tried document.getElementById('iFrameId').document.body.innerHTML. This apparently replaces the whole HTML of the page and not just the innerHTML. I have tried out a couple of things and they didn't work document.getElementById('iFrameId').body.innerHTML document.frames[0].document.body.innerHTML My purpose is to have a container element which can contain dynamic HTML that's set to it. I've been using it well till now when I observed that the setting innerHTML on a div is taking increasing amount of time because of the onClicks or other JS methods that are attached to the anchors and images in the dynamic HTML. Appears the JS methods or the HTML is some how not getting cleaned up properly (memory leak?) Also being discussed - http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/Q_26185526.html#a32779090

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  • JSON: Jackson stream parser - is it really worth it?

    - by synic
    I'm making pretty heavy use of JSON parsing in an app I'm writing. Most of what I have done is already implemented using Android's built in JSONObject library (is it json-lib?). JSONObject appears to create instances of absolutely everything in the JSON string... even if I don't end up using all of them. My app currently runs pretty well, even on a G1. My question is this: are the speed and memory benefits from using a stream parser like Jackson worth all the trouble? By trouble, I mean this: As far as I can tell, there are three downsides to using Jackson instead of the built in library: Dependency on an external library. This makes your .apk bigger in the end. Not a huge deal. Your app is more fragile. Since the parsing is not done automatically, it is more vulnerable to changes in the JSON text that it's parsing. I'm extremely worried that malformed JSON will result in infinite loops (as pull parsing requires a lot of while loops). Writing code to parse JSON via a stream parser is ugly and tedious.

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  • Selecting a Java framework for large application w/ only ONE user

    - by Bijan
    I am building a large application that will be hosted on an AWS server. I'm trying to select a web framework for assisting me with code organization, template design, and generally presentation aspects. Here are some points of consideration: Require security/login/user authentication. I may add the ability in the future to allow more than just an administrator to access the web app, but it is not a public facing website. AJAX support would be helpful. There are a couple widgets that I don't want to recreate. One is a tree object, where the user can expand/contract items in the list, can create new branches, add/edit objects. This would be better off in some dynamic view rather than all done in ugly html. Generally, this is just to provide the application with a face for control, management, and monitoring. Having an easier time adding buttons, CSS, AJAX widgets are great additions though, but not the primary purpose. I'm considering: Wicket Spring Seam GWT Stripe and the list goes on, as I'm sure you all know. I originally planned on using GWT, but then started to feel that GWT didn't cover my primary needs. I could be wrong about this, but there seems to be a lot of support for GWT AND Wicket/Spring. All of this 'getting lost in java frameworks' got me thinking outside the java realm for a framework that would suit my needs that was a clear option, like: JRuby/Rails Jython/Django Groovy/Grails Guice (just throwing this in there... I don't clearly understand the main purposes of all these frameworks. It doesn't seem like DInjection is something I need for a single purpose application) Thanks as always. This community makes Googling for esoteric programming information an order of magnitude better.

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