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  • Login to a remote machine & accessing network resources

    - by calvin
    Hi, I want to access a file on remote machine(win2k3, 10.10.20.30), but i couldn't understand how to login to that machine in my program. is there any simple win api that takes network path, credentials and returns the handle? i just want to access \10.10.20.30\c$\test.txt, WNetAddConnection2, WNetAddConnection3 are little confusing. Any suggestion will be helpful.

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  • Managing a user's PHP session with Cocoa Touch

    - by Calvin L
    I'm building an iPhone app, which will allow users to log in to a PHP web server that authenticates the user and starts a session. My idea for managing a session is to create a singleton User class that has a sharedLogin method. Would it be prudent to store the session variable in the shared instance in order to maintain the session?

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  • Filename of script that instantiates an object

    - by Calvin L
    In PHP, is it possible to get the file name of the script that instantiated an object? For example I have a script called file.php that creates a new instance of class Class. The class has an Error object that, when triggered, returns some error information. I would like to show that file.php triggered the error.

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  • Conventional Approaches for Passing Data to Back-End?

    - by Calvin
    Hi guys, I'm fairly new to web development, so please pardon the painfully newbie question that's about to follow. My computer science class group and I are developing a web application for class, which is built in Python (under Django) and uses jQuery on the front end. It's primarily an AJAX-ified application, and passing data from the backend to the front end is done through AJAX calls to specific URLs which return JSON. This is probably a stupid question, but what's the conventional approach for passing data in the opposite direction? We don't want to reload the page or anything, so is it an AJAX pass going the other way or something? Thanks in advance for your help!

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  • vagrant box add: where does .box file get downloaded to?

    - by Calvin Cheng
    What actually happens to the .box file (which according to the docs is simply a vbox image in tar form, in a particular format) after the first command vagrant box add lucid32 http://files.vagrantup.com/lucid32.box is executed? I can't seem to find the filesystem location of lucid32.box after the download has successfully completed... I am aware it doesn't really matter as vagrant init lucid32 vagrant up vagrant ssh will get me into the vm irregardless. But I am curious where .box is located.

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  • wpf get access to other classes

    - by Calvin
    I am currently working on a wpf application. There are some methods in other classes in which I want to trigger to do some work instead of trying to figure out how to rewrite them in. How is it that I can get to those classes? Would I have to for example instantiate the class? If so, once I instantiate it, how would I be able access them. Keep in mind that these classes have abstract classes on top of abstract classes.

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  • Javascript get image height works in all browsers but firefox...please help?

    - by Calvin
    So I am fairly new to Javascript (a lot of experience in PHP), but I have this basic script that checks a link that redirects to a URL to see what the image height is. If it is a certain height then it adds one to a variable, otherwise nothing. I would easily do this in PHP but the images are on other servers and not my own so it doesn't work. Anyways, ehre is the script. Let me know if you have any tips. Works well and tested in Chrome, Safari, Opera, and IE. <script language='JavaScript'> window.onload = function() { var nstar = 0, urls = []; urls[0] = "http://optout.imiclk.com/cgi/nai_status.cgi?nocache="; urls[1] = "http://www.adbrite.com/mb/nai_optout_check.php?nocache="; urls[2] = "http://events.adchemy.com/visitor/auuid/nai-status?nocache="; function getImgSize(imgSrc){ var newImg = new Image(); newImg.src = imgSrc; return{height:newImg.height, width:newImg.width} } for(i=0,length=urls.length;i<length;i++){ if(getImgSize(urls[i]).height==43){nstar++;} } document.getElementById('tracknum').innerHTML = "<b>" + nstar + "</b>"; } </script>

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  • simple interview question

    - by calvin
    Input integer array: a[8] = { a1, a2, a3, a4, b1, b2, b3, b4 } Output array: a[8] = { a1, b1, a2, b2, a3, b3, a4, b4 } Forget all corner cases, make sure your solution works for any int array of size 2n. You can use one or two temp variables for looping or anything, but you shouldn't use any temp arrays/stacks/queues etc to store entire array or part of array. I'm able to get answer in O(n*log n), but I'm looking for better solution.

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  • Hostgator SSH returns Too many authentication failures for username

    - by Tri Nguyen
    I was trying to ssh into my Hostgator shared hosting account following this guide: http://support.hostgator.com/articles/getting-started/how-do-i-get-and-use-ssh-access However, it returns this error: Received disconnect from 96.125.167.124: 2: Too many authentication failures for tridn I tried to search around for a solution, and found this: http://www.ipreferjim.com/2011/07/hostgator-ssh-warns-too-many-authentication-failures/ I tried doing what he suggested, but encountered another error: jailshell: .ssh/authorized_keys: No such file or directory So I ssh into my server using the PubkeyAuthentication=n flag, and create a directory called .ssh and a file called authorized_keys. I then redid what was suggested in the article, which is this: cat ~/.ssh/hostgator.pub | ssh -p 2222 -o PubkeyAuthentication=no [email protected] 'cat >> .ssh/authorized_keys' (note: my ssh key is called hostgator.pub. it's dsa I verified that the authorized_keys now has the content of this key. However, it still get the same error as before: eceived disconnect from 96.125.167.124: 2: Too many authentication failures for tridn Anybody knows how I should proceed next?

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  • Google App Engine: JDO does the job, JPA does not

    - by Phuong Nguyen de ManCity fan
    I have setup a project using both Jdo and Jpa. I used Jpa Annotation to Declare my Entity. Then I setup my testCases based on LocalTestHelper (from Google App Engine Documentation). When I run the test, a call to makePersistent of Jdo:PersistenceManager is perfectly OK; a call to persist of Jpa:EntityManager raised an error: java.lang.IllegalArgumentException: Type ("org.seamoo.persistence.jpa.model.ExampleModel") is not that of an entity but needs to be for this operation at org.datanucleus.jpa.EntityManagerImpl.assertEntity(EntityManagerImpl.java:888) at org.datanucleus.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:385) Caused by: org.datanucleus.exceptions.NoPersistenceInformationException: The class "org.seamoo.persistence.jpa.model.ExampleModel" is required to be persistable yet no Meta-Data/Annotations can be found for this class. Please check that the Meta-Data/annotations is defined in a valid file location. at org.datanucleus.ObjectManagerImpl.assertClassPersistable(ObjectManagerImpl.java:3894) at org.datanucleus.jpa.EntityManagerImpl.assertEntity(EntityManagerImpl.java:884) ... 27 more How can it be the case? Below is the link to the source code of the maven projects that reproduce that problem: http://seamoo.com/jpa-bug-reproduce.tar.gz Execute the maven test goal over the parent pom you will notice that 3/4 tests from org.seamoo.persistence.jdo.JdoGenericDAOImplTest passed, while all tests from org.seamoo.persistence.jpa.JpaGenericDAOImplTest failed.

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  • Cannot install xdebug with WAMP SERVER 2.1

    - by Jimmy Nguyen
    Hi all, I use WAMP SERVER 2.1 and select PHP 5.3.3 for my system, so I select xDebug with php_xdebug-2.1.0-5.3-vc6.dll and changed name becoming php_xdebug.dll for easy way to use. Following the instructions: php.ini (in Apache folder) extension=php_xdebug.dll ... zend_extension = "C:/wamp/bin/php/php5.3.3/ext/php_xdebug.dll" xdebug.remote_enable=on xdebug.remote_handler=dbgp xdebug.remote_host=localhost xdebug.remote_port=9000 xdebug.idekey="netbeans-xdebug" However, nothing happens, there are no information related to xdebug from phpinfo. Also xdebug announce that xdebug have not installed yet (http://xdebug.org/find-binary.php). I am so worried causing too much time for configuration. I got crazy and totally gave up. Anyone have ideas to solve it, I am so appreciated what you help me. Thanks

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  • How Moles Isolation framework is implemented?

    - by Buu Nguyen
    Moles is an isolation framework created by Microsoft. A cool feature of Moles is that it can "mock" static/non-virtual methods and sealed classes (which is not possible with frameworks like Moq). Below is the quick demonstration of what Moles can do: Assert.AreNotEqual(new DateTime(2012, 1, 1), DateTime.Now); // MDateTime is part of Moles; the below will "override" DateTime.Now's behavior MDateTime.NowGet = () => new DateTime(2012, 1, 1); Assert.AreEqual(new DateTime(2012, 1, 1), DateTime.Now); Seems like Moles is able to modify the CIL body of things like DateTime.Now at runtime. Since Moles isn't open-source, I'm curious to know which mechanism Moles uses in order to modify methods' CIL at runtime. Can anyone shed any light?

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  • MDX - Using "iif" function in the "Where" section

    - by Duc Duy Nguyen
    Hi I'd like to know how to make that "iif" work. Basically, I need to filter the engineering "product codes" when originator is "John Smith". currentmember is not working or that iif is not working, SELECT { ( [Time].[Fiscal Hierarchy Time Calculations].[Month to Date], [Measures].[Sell - Bookings] ) } ON COLUMNS, [Originators].[Originator One Letter Name].Children ON ROWS FROM [Sales] WHERE ( [Time].[Fiscal Month].&[2010-02-01T00:00:00], IIF ( [Originators].[Originator One Letter Name].CurrentMember = "John Smith", Except ( [Product Codes].[Product Primary Subcategory].Children, [Product Codes].[Product Primary Subcategory].&[ENGINEERING] ), [Product Codes].[Product Primary Subcategory].Children ) ); Any ideas? Thanks in advance. Duy

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  • Google App Engine: Unit testing concurrent access to memcache

    - by Phuong Nguyen de ManCity fan
    Would you guys show me a way to simulating concurrent access to memcache on Google App Engine? I'm trying with LocalServiceTestHelpers and threads but don't have any luck. Every time I try to access Memcache within a thread, then I get this error: ApiProxy$CallNotFoundException: The API package 'memcache' or call 'Increment()' was not found I guess that the testing library of GAE SDK tried to mimic the real environment and thus setup the environment for only one thread (the thread that running the test) which cannot be seen by other thread. Here is a piece of code that can reproduce the problem package org.seamoo.cache.memcacheImpl; import org.testng.Assert; import org.testng.annotations.AfterMethod; import org.testng.annotations.BeforeMethod; import org.testng.annotations.Test; import com.google.appengine.api.memcache.MemcacheService; import com.google.appengine.api.memcache.MemcacheServiceFactory; import com.google.appengine.tools.development.testing.LocalMemcacheServiceTestConfig; import com.google.appengine.tools.development.testing.LocalServiceTestHelper; public class MemcacheTest { LocalServiceTestHelper helper; public MemcacheTest() { LocalMemcacheServiceTestConfig memcacheConfig = new LocalMemcacheServiceTestConfig(); helper = new LocalServiceTestHelper(memcacheConfig); } /** * */ @BeforeMethod public void setUp() { helper.setUp(); } /** * @see LocalServiceTest#tearDown() */ @AfterMethod public void tearDown() { helper.tearDown(); } @Test public void memcacheConcurrentAccess() throws InterruptedException { final MemcacheService service = MemcacheServiceFactory.getMemcacheService(); Runnable runner = new Runnable() { @Override public void run() { // TODO Auto-generated method stub service.increment("test-key", 1L, 1L); try { Thread.sleep(200L); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } service.increment("test-key", 1L, 1L); } }; Thread t1 = new Thread(runner); Thread t2 = new Thread(runner); t1.start(); t2.start(); while (t1.isAlive()) { Thread.sleep(100L); } Assert.assertEquals((Long) (service.get("test-key")), new Long(4L)); } }

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  • Which information (files) of an eclipse-workspace should be tracked by source control

    - by Phuong Nguyen de ManCity fan
    I want to track the workspace of eclipse by source control so that important settings can be backed up. However, there are a lot of kind of *.index inside the .metadata folder of workspace. Some information are important, for example Mylyn repository, but some information is merely cached files and thus, doesn't make sense to me for being tracked. In short, what files inside eclipse workspace that should be tracked so that I can restore the working workspace after problems (like meta data file deleted, etc.)

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  • JPA - Performance with using multiple entity manager

    - by Nguyen Tuan Linh
    My situation is: The code is not mine I have two kinds of database: one is Dad, one is Son. In Dad, I have a table to store JNDI name. I will look up Dad using JNDI, create entity manager, and retrieve this table. From these retrieved JNDI names, I will create multiple entity managers using multiple Son databases. The problem is: Son have thousands of entities. It takes each Son database around 10 minutes to load all entities. If there is 4 Son databases, it will be 40 minutes. My question: Is there any way to load all entities and use them for all entity manager? Please look at the code below For each Son JNDI: Map<String, String> puSonProperties = new HashMap<String, String>(); puSonProperties.put("javax.persistence.jtaDataSource", sonJndi); EntityManagerFactory emf = Persistence.createEntityManagerFactory("PUSon", puSonProperties); PUSon - All of them use the same persistence unit log.info("Verify entity manager for son: {0} - {1}", sonCode, emSon.find(Son_configuration.class, 0) != null ? "ok" : "failed!"); This is the actual code where the loading of all entities begins. 10 mins.

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  • Unbelievable: Cannot cast from class X to its super class

    - by Phuong Nguyen de ManCity fan
    I'm encountering a very weird problem with Spring (3.0.1.RELEASE), TestNG (5.11) and Maven Surefire (2.5). I have a test class that extends a Spring helper class for testNG so that test context can be loaded from an xml file (that contains some bean definitions). My project was imported into eclipse using m2eclipse (using Import Maven Project) The class run fine in Eclipse TestNG runner. However, it throws this exception with Maven Surefire Caused by: java.lang.ClassCastException: com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl cannot be cast to javax.xml.parsers.DocumentBuilderFactory at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:123) at org.springframework.beans.factory.xml.DefaultDocumentLoader.createDocumentBuilderFactory(DefaultDocumentLoader.java:89) at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:70) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388) I have eliminated all involved dependencies in my pom so that the two classes com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl and javax.xml.parsers.DocumentBuilderFactory are coming from JRE only (the rt.jar). So, it looks so unbelievable to me. I wonder if there is any mechanism in loading class that can explain for this behavior? Thanks.

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  • How to debug GWT using Ant

    - by Phuong Nguyen de ManCity fan
    I know that the job would be simpler if I use Google Plugin for Eclipse. However, in my situation, I heavily adapted Maven and thus, the plugin cannot suit me. (In fact, it gave me the whole week of headache). Rather, I relied on a ant script that I learned from http://code.google.com/webtoolkit/doc/latest/tutorial/appengine.html The document was very clear; I follow the article and successfully invoked DevMode using ant devmode. However, the document didn't tell me about debugging GWT (like Google Plugin for Eclipse can do). Basically, I want to add some parameter to an ant task that expose a debug port (something like (com.google.gwt.dev.DevMode at localhost:58807)) so that I can connect my eclipse to. How can I do that?

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  • Validating textboxes and checkboxes then add the values of those checkboxes

    - by TiTi Nguyen
    I am very new to Javascript. I am running to a problem and don't know how to solve it. Could you please help? Basically, I want to create some textboxes and checkboxes in a form. Then I have to validate those fields, and add the values of the checkboxes if they are selected. One of the textboxes asking for how many semesters attended, and 3 checkboxes with value of 100, 1000, and 750. Whichever checkbox is selected, it should multiply its value to the number of semesters attended. For example if the first two checkboxes are selected then totalCost = (100+1000)* semester. Here is my code: User Name: <label>User Address: <input type = "text" id ="address" size = "30"/></label> <br/><br/> <label> User E-mail address: <input type = "text" id ="email" size = "30"/></label> <br/><br/> <label> User Phone number: <input type = "text" id ="phone" size = "30"/></label> <br/><br/> <label> User area code: <input type = "text" id ="area" size = "30"/></label> <br/><br/> <label> User SSN: <input type = "text" id ="ssn" size = "30"/></label> <br/><br/> <label> User Birthday: <input type = "text" id ="birthday" size = "30"/></label> <br/><br/> <label> Number of semester attended: <input type = "text" id ="semester" size = "3"/></label> <br/><br/> <label><input type="checkbox" id="box_book" value="100"/>Books $100 per semester</label> <br/> <label><input type="checkbox" id="box_tuition" value="1000"/>Tuition $1000 per semester</label> <br/> <label><input type="checkbox" id="box_room" value="750"/>Room and Board $750 per semester</label> <br/> <input type="reset" id="reset"/> <input type="submit" id="submit" onclick="checking()"/> <p/> </form> function checking() { var name=document.forms["myForm"]["name"].value; var address=document.forms["myForm"]["address"].value; var email=document.forms["myForm"]["email"].value; var atpos=email.indexOf("@"); var dotpos=email.lastIndexOf("."); var phone=document.forms["myForm"]["phone"].value; var area=document.forms["myForm"]["area"].value; var ssn=document.forms["myForm"]["ssn"].value; var birth=document.forms["myForm"]["birthday"].value; var semester=document.forms["myForm"]["semester"].value; var boxBook = document.forms["myForm"]["box_book"].value; var boxTuition = document.forms["myForm"]["box_tuition"].value; var boxRoom = document.forms["myForm"]["box_room"].value; if (name==null || name=="") { alert("Please fill in your name."); return false; } if (address==null || address=="") { alert("Please fill in your address."); return false; } if (atpos<1 || dotpos<atpos+2 || dotpos+2>=email.length) { alert("The email (" + email + ") is not a valid e-mail address. Please reenter your email address."); return false; } if(phone.length!=10) { alert("Phone number entered in incorrect form. Please reenter phone number in the correct form which contains 10 numbers."); return false; } if (area==null || area=="") { alert("Please fill in the area code"); return false; } if(ssn.length!=9) { alert("SSN entered in incorrect form. Please reenter SSN."); return false; } if (birth==null || birth=="") { alert("Please fill in your date of birth."); return false; } if (semester==null || semester=="") { alert("How many semester have you attended?"); return false; } if (document.getElementById("box_book").checked == false && document.getElementById("box_tuition").checked == false && document.getElementById("box_room").checked == false) { alert("You must select one of the checkboxes"); return false; } if (document.getElementById("box_book").checked ==true) { var subcost = boxBook; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } if (document.getElementById("box_book").checked == true && document.getElementById("box_tuition").checked == true) { var subcost = boxBook + boxTuition; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } if (document.getElementById("box_book").checked == true && document.getElementById("box_tuition").checked == true && document.getElementById("box_room").checked == true) { var subcost = boxBook + boxTuition + boxRoom; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } if (document.getElementById("box_tuition").checked ==true) { var subcost = boxTuition; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } if (document.getElementById("box_tuition").checked == true && document.getElementById("box_room").checked == true) { var subcost = boxTuition + boxRoom; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } if (document.getElementById("box_room").checked ==true) { var subcost = boxRoom; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } if (document.getElementById("box_book").checked == true && document.getElementById("box_room").checked == true) { var subcost = boxBook + boxRoom; var totalcost = subcost * semester; alert ("Your total cost is: $" + totalcost); } else return false; } When I hit the submit button, nothing happens!! Please help.

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  • How to write a virtual conditional breakpoint in java

    - by Phuong Nguyen de ManCity fan
    I'm sorry if the question title may mis-inform you, but I cannot find a proper word to explain that. If you ever working with .NET, you would know that there is Assert class that will automatically wake up and attach debugger if necessary and then have debugger (Visual Studio) pausing at the Assert command, given the Assert command failed. Given I'm running a java program and having debugger connected, then how can I have debugger to break on certain condition without manually setup a break point? I'm expecting something like that: void doSomeThing(String x){ if (x==null) breakDebuggerNow(); }

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  • How to add ACTIVE DIRECTORY user to Sharepoint group

    - by standley-nguyen
    Hi all. I got an exception when executing this snippet code SPSecurity.RunWithElevatedPrivileges(delegate() { using (SPSite site = new SPSite(siteUrl.Trim())) { using (SPWeb web = site.OpenWeb()) { try { web.AllowUnsafeUpdates = true; SPUser spUser = web.AllUsers[userName]; if (spUser != null) { SPGroup spGroup = web.Groups[groupName]; if (spGroup != null) spGroup.AddUser(spUser); } } catch (Exception ex) { this.TraceData(LogLevel.Error, "Error at function Named [AddUserToSPGroupWidget.AddUserToGroup] . With Error Message: " + ex.ToString()); } finally { web.AllowUnsafeUpdates = false; } } } }); PLease guide me. Thanks in advance.

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  • Convert date time value to expected with SimpleDateFormat

    - by Khoi Nguyen
    I have an issue with converting a date time value to expected one with SimpleDateFormat (java), my expected format is MM/yyyy, and I want to convert 2 values to only 1 format MM-yyyy for example 05-2012 yyyy-MM for example 2012-05 ouput is 05/2012. I implemented something look like following String expiry = "2012-01"; try { result = convertDateFormat(expiry, "MM-yyyy", expectedFormat); } catch (ParseException e) { try { result = convertDateFormat(expiry, "yyyy-MM", expectedFormat); } catch (ParseException e1) { e1.printStackTrace(); } e.printStackTrace(); } private String convertDateFormat(String date, String oPattern, String ePattern) throws ParseException { SimpleDateFormat normalFormat = new SimpleDateFormat(oPattern); Date d = normalFormat.parse(date); SimpleDateFormat cardFormat = new SimpleDateFormat(ePattern); return cardFormat.format(d); } Now, the return value is 6808, I don't know why. Kindly anyone help me on this case.

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