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  • debugging with internet explorer

    - by baiano
    I have some code that I thought I had written so that it would play nice on IE. But apparently it does not. I use IE8 for my testing and get quite frustrated with the built-in debugging 'tool'. I found that firebug has a javascript tool that debugs for IE but I have to click it for every page, wait for it to load and then test my script. Is there a way to make IE ALWAYS load the firebug .js file? I tried searching for way to set up a custom header file for my IE installation but was unsuccessful. Is there another tool out there that would be better/easier to use? Another way to test scripts for IE compatibility?

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  • How to ignore comments when reading a XML file into a XmlDocument?

    - by tunnuz
    Possible duplicate: How to remove all comment tags from XmlDocument Hello, I am trying to read a XML document with C#, I am doing it this way: XmlDocument myData = new XmlDocument(); myData.Load("datafile.xml"); anyway, I sometimes get comments when reading XmlNode.ChildNodes. For the benefit of who's experiencing the same requirement, here's how I did it at the end: /** Validate a file, return a XmlDocument, exclude comments */ private XmlDocument LoadAndValidate( String fileName ) { // Create XML reader settings XmlReaderSettings settings = new XmlReaderSettings(); settings.IgnoreComments = true; // Exclude comments settings.ProhibitDtd = false; settings.ValidationType = ValidationType.DTD; // Validation // Create reader based on settings XmlReader reader = XmlReader.Create(fileName, settings); try { // Will throw exception if document is invalid XmlDocument document = new XmlDocument(); document.Load(reader); return document; } catch (XmlSchemaException) { return null; } } Thank you Tommaso

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  • How to access and work with XML from API in C#

    - by Jarek
    My goal is to pull XML data from the API and load it to a sql server database. The frist step I'm attempting here is to access the data and display it. Once I get this to work I'll loop through each row and insert the values into a sql server database. When I try to run the code below nothing happens and when I paste the url directly into the browser I get this error "2010-03-08 04:24:17 Wallet exhausted: retry after 2010-03-08 05:23:58. 2010-03-08 05:23:58" To me it seems that every iteration of the foreach loop makes a call to the site and I get blocked for an hour. Am I retrieving data from the API in an incorrect manner? Is there some way to load the data into memory or an array then loop through that? Here's the bit of code I hacked together. using System; using System.Data.SqlClient; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Xml; using System.Data; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { try { string userID = "123"; string apiKey = "abc456"; string characterID = "789"; string url = "http://api.eve-online.com/char/WalletTransactions.xml.aspx?userID=" + userID + "&apiKey=" + apiKey + "&characterID=" + characterID; XmlDocument xmldoc = new XmlDocument(); xmldoc.Load(url); XmlNamespaceManager xnm1 = new XmlNamespaceManager(xmldoc.NameTable); XmlNodeList nList1 = xmldoc.SelectNodes("result/rowset/row", xnm1); foreach (XmlNode xNode in nList1) { Response.Write(xNode.InnerXml + "<br />"); } } catch (SqlException em) { Response.Write(em.Message); } } } Here's a sample of the xml <eveapi version="2"> <currentTime>2010-03-06 17:38:35</currentTime> <result> <rowset name="transactions" key="transactionID" columns="transactionDateTime,transactionID,quantity,typeName,typeID,price,clientID,clientName,stationID,stationName,transactionType,transactionFor"> <row transactionDateTime="2010-03-06 17:16:00" transactionID="1343566007" quantity="1" typeName="Co-Processor II" typeID="3888" price="1122999.00" clientID="1404318579" clientName="unseenstrike" stationID="60011572" stationName="Osmeden IX - Moon 6 - University of Caille School" transactionType="sell" transactionFor="personal" /> <row transactionDateTime="2010-03-06 17:15:00" transactionID="1343565894" quantity="1" typeName="Co-Processor II" typeID="3888" price="1150000.00" clientID="1404318579" clientName="unseenstrike" stationID="60011572" stationName="Osmeden IX - Moon 6 - University of Caille School" transactionType="sell" transactionFor="personal" /> </rowset> </result> <cachedUntil>2010-03-06 17:53:35</cachedUntil> </eveapi>

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  • facebook app using fbml displays nothing

    - by fusion
    i've made an app in php and html and trying to integrate it with fb. the app on my website is using jquery, but knowing that fbml doesn't support jquery, i've tried to instead use fbjqry. this doesn't work either. i'm not sure where i'm going wrong. /////////////// index.php: <?php // Copyright 2007 Facebook Corp. All Rights Reserved. require_once 'config_fb.php'; //***** Greet the currently logged-in user! echo "<p>Hello, <fb:name uid=\"$user_id\" useyou=\"false\" />!</p>"; include 'quote.html'; ?> ///////////////// quote.html: <!DOCTYPE html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="stylesheet" type="text/css" href="css/jquote.css" /> <!--<script type="text/javascript" src="scripts/jquery-1.4.2.js"></script>--> <script type="text/javascript" src="fbjqry/utility.js"></script> <script type="text/javascript" src="fbjqry/fjqry.js"></script> <script type="text/javascript"> // On page load, fill the box with content. $(document).ready(function() { $("#quoteContainer").load("quote.php"); }); var auto_refresh = setInterval( function () { $('#quoteContainer').load('quote.php'); }, 5000); // refresh every 10000 milliseconds </script> </head> <div id="wrapper"> <div class="header">&nbsp;Quote of the Day</div> <div id="quoteContainer"> </div> </div> </html> //// from the above file it should take quotes from quote.php and display it, but it doesn't display anything. it seems as though it isn't reading from the quote.php file. is the command of fbjqry different from jquery? if i use iframes instead of fbml, everything loads correctly except that i'd like tab/profile box for this app, which iframes doesn't have.

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  • Dynamic object property populator (without reflection)

    - by grenade
    I want to populate an object's properties without using reflection in a manner similar to the DynamicBuilder on CodeProject. The CodeProject example is tailored for populating entities using a DataReader or DataRecord. I use this in several DALs to good effect. Now I want to modify it to use a dictionary or other data agnostic object so that I can use it in non DAL code --places I currently use reflection. I know almost nothing about OpCodes and IL. I just know that it works well and is faster than reflection. I have tried to modify the CodeProject example and because of my ignorance with IL, I have gotten stuck on two lines. One of them deals with dbnulls and I'm pretty sure I can just lose it, but I don't know if the lines preceding and following it are related and which of them will also need to go. The other, I think, is the one that pulled the value out of the datarecord before and now needs to pull it out of the dictionary. I think I can replace the "getValueMethod" with my "property.Value" but I'm not sure. I'm open to alternative/better ways of skinning this cat too. Here's the code so far (the commented out lines are the ones I'm stuck on): using System; using System.Collections.Generic; using System.Reflection; using System.Reflection.Emit; public class Populator<T> { private delegate T Load(Dictionary<string, object> properties); private Load _handler; private Populator() { } public T Build(Dictionary<string, object> properties) { return _handler(properties); } public static Populator<T> CreateBuilder(Dictionary<string, object> properties) { //private static readonly MethodInfo getValueMethod = typeof(IDataRecord).GetMethod("get_Item", new [] { typeof(int) }); //private static readonly MethodInfo isDBNullMethod = typeof(IDataRecord).GetMethod("IsDBNull", new [] { typeof(int) }); Populator<T> dynamicBuilder = new Populator<T>(); DynamicMethod method = new DynamicMethod("Create", typeof(T), new[] { typeof(Dictionary<string, object>) }, typeof(T), true); ILGenerator generator = method.GetILGenerator(); LocalBuilder result = generator.DeclareLocal(typeof(T)); generator.Emit(OpCodes.Newobj, typeof(T).GetConstructor(Type.EmptyTypes)); generator.Emit(OpCodes.Stloc, result); int i = 0; foreach (var property in properties) { PropertyInfo propertyInfo = typeof(T).GetProperty(property.Key, BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase | BindingFlags.FlattenHierarchy | BindingFlags.Default); Label endIfLabel = generator.DefineLabel(); if (propertyInfo != null && propertyInfo.GetSetMethod() != null) { generator.Emit(OpCodes.Ldarg_0); generator.Emit(OpCodes.Ldc_I4, i); //generator.Emit(OpCodes.Callvirt, isDBNullMethod); generator.Emit(OpCodes.Brtrue, endIfLabel); generator.Emit(OpCodes.Ldloc, result); generator.Emit(OpCodes.Ldarg_0); generator.Emit(OpCodes.Ldc_I4, i); //generator.Emit(OpCodes.Callvirt, getValueMethod); generator.Emit(OpCodes.Unbox_Any, property.Value.GetType()); generator.Emit(OpCodes.Callvirt, propertyInfo.GetSetMethod()); generator.MarkLabel(endIfLabel); } i++; } generator.Emit(OpCodes.Ldloc, result); generator.Emit(OpCodes.Ret); dynamicBuilder._handler = (Load)method.CreateDelegate(typeof(Load)); return dynamicBuilder; } } EDIT: Using Marc Gravell's PropertyDescriptor implementation (with HyperDescriptor) the code is simplified a hundred-fold. I now have the following test: using System; using System.Collections.Generic; using System.ComponentModel; using Hyper.ComponentModel; namespace Test { class Person { public int Id { get; set; } public string Name { get; set; } } class Program { static void Main() { HyperTypeDescriptionProvider.Add(typeof(Person)); var properties = new Dictionary<string, object> { { "Id", 10 }, { "Name", "Fred Flintstone" } }; Person person = new Person(); DynamicUpdate(person, properties); Console.WriteLine("Id: {0}; Name: {1}", person.Id, person.Name); Console.ReadKey(); } public static void DynamicUpdate<T>(T entity, Dictionary<string, object> properties) { foreach (PropertyDescriptor propertyDescriptor in TypeDescriptor.GetProperties(typeof(T))) if (properties.ContainsKey(propertyDescriptor.Name)) propertyDescriptor.SetValue(entity, properties[propertyDescriptor.Name]); } } } Any comments on performance considerations for both TypeDescriptor.GetProperties() & PropertyDescriptor.SetValue() are welcome...

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  • Embedded strongly-typed views with ASP.NET MVC

    - by Brian Vallelunga
    I'm working on a plugin-type of system for ASP.NET MVC that loads views from an embedded assembly. I have created a VirtualPathProvider that does the work of retrieving out of the assembly. Everything is working fine except for strongly-typed views. Whenever I try to load one of those, I get an exception of: Could not load type 'System.Web.Mvc.ViewPage'. The problem is that there is no Web.config file under the Views folder. Well, actually there is, but the system doesn't seem to want to read the embedded version. If I manually create the file under the corresponding directory in the web app, everything is fine. This isn't an acceptable workaround however, as each plugin would need its own file in its own specific directory. Does anyone know how I might get ASP to read the embedded Web.config file? Thanks, Brian

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  • Attempt to use DLL results in error.

    - by abhi
    I am using a library (DLL) that uses the Oracle.DataAccess DLL to connect to the database. I am doing in in C# .NET framework 3.5 When I attempt to compile, the compilation takes place, but the executable throws this error message. Could not load file or assembly 'Oracle.DataAccess, Version=2.111.7.20, Culture= neutral, PublicKeyToken=89b483f429c47342' or one of its dependencies. An attempt was made to load a program with an incorrect format. Is there some way to get around this? What could be causing this to happen?

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  • .NET 2.0 vs .NET 4.0 loading error

    - by David Rutten
    My class library is compiled against .NET 2.0 and works just fine whenever I try to load it as a plugin under the 2.0 runtime. If however the master application is running the .NET 4.0 runtime, I get an exception as soon as the resources need to be accessed: Exception occurred during processing of command: Grasshopper Plug-in = Grasshopper Could not find file 'Grasshopper.resources'. Stack trace: at UnhandledExceptionLogger.UnhandledThreadException(Object sender, ThreadExceptionEventArgs args) at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t) at System.Windows.Forms.Control.WndProcException(Exception e) at System.Windows.Forms.ControlNativeWindow.OnThreadException(Exception e) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.SafeNativeMethods.ShowWindow(Handle Ref hWnd, Int32 nCmdShow) at System.Windows.Forms.Control.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.SetVisibleCore(Boolean value) at System.Windows.Forms.Form.Show(IWin32Window owner) .... What's going on and how do I make my project load on all .NET Runtimes?

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  • Safari extension cookies not recognized/passed

    - by Alex
    I've recently been porting a Chrome extension to Safari, and encountered this kind of error (bug, feature, etc.) So, in global page i have a XMLHTTP request to a secure page which is available only after you login. Example: I simply login using browser - as usually you do on facebook or other secure pages After that, in global page, I load a login-only-available xmlhttp - and it says i'm not logged in it seems that global page somewhat has it's own cookies, so a secure page thinks i'm new ps: in Chrome i can load that page and it thinks i'm acting on behalf of logged in user, so i guess there are some restrictions in Safari pps: i heard there's a Block third-party cookies option in Safari, but even if i checked it to "Never block" it still doesn't work

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  • Drupal: Multiple Stylesheets

    - by Vecta
    I'm currently creating a custom Drupal theme for my company and I'm having trouble getting multiple stylesheets to load. I followed the instructions on this page by adding stylesheets to the .info file in the format: stylesheets[all][] = style.css stylesheets[all][] = name2.css etc... However, when I load the page nothing changes and when I view source, it consistently lists style.css but seems to ignore the others. Am I misunderstood in the process of adding additional stylesheets? What could I be doing incorrectly? Thanks for any help!

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  • I am trying to move a rectangle in Pygame using coordinates but won't work

    - by user1821449
    this is my code import pygame from pygame.locals import * import sys pygame.init() pygame.display.set_caption("*no current mission*") size = (1280, 750) screen = pygame.display.set_mode(size) clock = pygame.time.Clock() bg = pygame.image.load("bg1.png") guy = pygame.image.load("hero_stand.png") rect = guy.get_rect() x = 10 y = 10 while True: for event in pygame.event.get(): if event.type == pygame.QUIT: sys.exit() if event.type == KEYDOWN: _if event.key == K_RIGHT: x += 5 rect.move(x,y)_ rect.move(x,y) screen.blit(bg,(0,0)) screen.blit(guy, rect) pygame.display.flip() it is just a simple test to see if i can get a rectangle to move. Everything seems to work except the code I put in italic.

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  • 'script/console test' with spork and rspec not loading the whole environment?

    - by TheDeeno
    I'm trying to load up console to interact with some of my rspec mocking helpers. I expected that running script/console test would load an env similar to when I run spec. However, this doesn't appear to be the case. It looks like spec_helper is never loaded. Or, if it is, it's not actually running through the logic because spork has polluted it a bit. In short, is there a quick and easy way to get an interactive rspec party going?

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  • Loading html dynamically using Javascript and PHP

    - by Vafello
    I have the following code: <?php if ($x == 1){ ?> <b>Some html...</b> <?php } else if ($x==2){ ?> <b> Other html...</b> <?php } ?> Now I would like to have two links below (a href) and somehow pass the variable $x (so Link1 passes x=1 and Link2 passes x=2) in order to load the relevant bit of code from if statement. I know I can pass $x using form and then test its value and load required bit of code, but I would like to do it smoothly, without reloading the page. I think that JQuery could help it, but I have no idea how to do it. Any ideas greatly appreciated.

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  • show loading gif of image only if it is really loading it for the first time

    - by Y.G.J
    i have 2 img elements. 2 id's for them: rimg and limg. limg is the loading gif and rimg is the reloaded full vertsion of the image. the is the code to show the loading before image finish to load: $("#limg").fadeIn("fast"); $("#rimg").attr("src",$(that).attr("bsrc")).load(function(){ $("#limg").fadeOut("fast",function () { $("#rimg").attr("alt",$(that).attr("alt")); $("#rimg").fadeIn("normal"); }); }); if i log into the site for the first time, it shows me the loading gif. if it is not my first time it is still showing that but i need the loading to be smooth without that loading how can i check if the image is loaded and cached before showing the loading gif?

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  • memory of drawables, is it better to have resources inside APK, outside APK or is it the same for me

    - by Daniel Benedykt
    Hi I have an application that draws a lot of graphics and change them. Since I have many graphics, I thought of having the images outside the APK, downloaded from the internet as needed, and saved on the files application folder. But I started to get outOfMemory exceptions. The question is: Does android handle memory different if I load a graphic from APK than if I load it from 'disk'? code using APK: topView.setBackgroundResource(R.drawable.bg); code if image is outside APK: Drawable d = Drawable.createFromPath(pathName); topView.setBackgroundDrawable(d); Thanks Daniel

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  • How to programmatically fill a database

    - by Dwaine Bailey
    Hi There, I currently have an iPhone app that reads data from an external XML file at start-up, and then writes this data to the database (it only reads/writes data that the user's app has not seen before, though) My concern is that there is going to be a back catalogue of data of several years, and that the first time the user runs the app it will have to read this in and be atrociously slow. Our proposed solution is to include this data "pre-built" into the applications database, so that it doesn't have to load in the archival data on first-load - that is already in the app when they purchase it. My question is whether there is a way to automatically populate this data with data from, say, an XML file or something. The database is in SQLite. I would populate it by hand, but obviously this will take a very long time, so I was just wondering if anybody had a more...programmatic solution...

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  • null pointer exception at org.hibernate.tuple.AbstractEntityTuplizer.createProxy

    - by saurabh
    I am using hibernate 3.2 with struts 1.2 framework I got this exception when i m trying to load the object I am using this code to load the object public Currentprofile findById(java.lang.String id) { log.debug("getting Currentprofile instance with id: " + id); try { Currentprofile instance = (Currentprofile) getSession().get( "com.hibermappings.Currentprofile", id); return instance; } catch (RuntimeException re) { log.error("get failed", re); throw re; } } my hbm file is this <one-to-one name="referenceDb" lazy="proxy" class="com.hibermappings.ReferenceDb" cascade="all" constrained="false" /> <one-to-one name="registration" lazy="proxy" class="com.hibermappings.Registration" cascade="all" constrained="false" /> <one-to-one name="jobseekerpackagedetails" lazy="proxy" class="com.hibermappings.Jobseekerpackagedetails" cascade="all" constrained="false" /> <property name="keyWords" type="java.lang.String"> <column name="keyWords" length="5000" /> </property> <property name="totalExp" type="java.lang.String"> <column name="totalExp" length="100" /> </property> <property name="hqualification" type="java.lang.String"> <column name="hQualification" length="100" /> </property> <property name="preferedLocation" type="java.lang.String"> <column name="preferedLocation" length="100" /> </property> <property name="functionalArea" type="java.lang.String"> <column name="functionalArea" length="1000" /> </property> <property name="expSalary" type="java.lang.String"> <column name="expSalary" length="100" /> </property> <property name="designation" type="java.lang.String"> <column name="designation" length="100" /> </property> <property name="resumeTitle" type="java.lang.String"> <column name="resumeTitle" length="500" /> </property> <property name="profileDetails" type="java.lang.String"> <column name="profileDetails" length="65535" /> </property> <property name="requiredProfile" type="java.lang.String"> <column name="requiredProfile" length="65535" /> </property> <property name="activatedOn" type="java.util.Date"> <column name="activatedOn" length="0" /> </property> <set name="resumes" inverse="true" cascade="save-update"> <key> <column name="jobseekerId" length="50" /> </key> <one-to-many class="com.hibermappings.Resume" /> </set> </class> the same code runs well when I m using in a simple java class within main method .. full stack trace of exception is java.lang.NullPointerException at org.hibernate.tuple.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:372) at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:3121) at org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:232) at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:173) at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87) at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862) at org.hibernate.impl.SessionImpl.load(SessionImpl.java:781) at org.hibernate.impl.SessionImpl.load(SessionImpl.java:774) at com.DAOs.CurrentprofileDAO.getLoad(CurrentprofileDAO.java:71) at com.action.JobSekeerManage.viewProfile(JobSekeerManage.java:447) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at com.filter.HibernateFilter.doFilter(HibernateFilter.java:24) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:731) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) Error::null

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  • Drupal - editing tab options for a content type not showing up

    - by easement
    I'm working on a D5 site and a lot of the content types have the menus at the top of the edit page. Examples: Overview | Grants | Dev load | Dev render | Edit | Revisions | Track | Workflow Overview | Dev load | Dev render | Edit | Revisions | Track | Workflow | Node queue | RelatedContent I'm not sure where these tabs come from, but I need to enable the menu for a content type that doesn't have them visible. I checked the workflow setting and the content type in question was specified to use workflow. So there should be at least another tab in addition to edit. The end goal is to have revisions show up in the menu, but I need to get the menu showing first. Any ideas where to start looking?

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  • jquery document ready with Google

    - by cf_PhillipSenn
    This is how I load jQuery: <script src="http://www.google.com/jsapi"></script> <script type="text/javascript"> function OnLoad() { insert jQuery goodness here }; google.load("jquery", "1"); google.setOnLoadCallback(OnLoad); </script> But instead of function OnLoad() {, I'd like to use $(document).ready(function() {} so that it's like every example in every book and documentation snippet. How can I define: $ = jQuery?

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  • Codeigniter Form validation problem

    - by ben robinson
    Please please please can someone help me $this-load-library('form_validation'); $this-load-helper('cookie'); $data = array(); if($_POST) { // Set validation rules including additional validation for uniqueness $this-form_validation-set_rules('yourname', 'Your Name', 'trim|required'); $this-form_validation-set_rules('youremail', 'Your Email', 'trim|required|valid_email'); $this-form_validation-set_rules('friendname', 'Friends Name', 'trim|required'); $this-form_validation-set_rules('friendemail', 'Friends Email', 'trim|required|valid_email'); // Run the validation and take action if($this-form_validation-run()) { echo 'valid; } } else{ echo 'problem'; } Form validation is coming back with no errors can cany one see why?

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  • What is the best way for communication between cluster nodes

    - by Tom
    I have an application written in a combination of ASP/VB6/VBScript and ASP.NET/C# that consists of a website part, SOAP-like webservice part and a queue processing part processing incoming files in a hotfolder. We are used to running under load balancers (Microsoft or other make). Often we need to communicate between the different load balanced servers. Currently we do this through the SQL Server database that is common for all nodes, however, this comes with a performance penalty as each message requires a transaction and continual polling from the other nodes. What would be better ways to achieve this? Tom, Appelby

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  • How to do a comet long pulling with ActionScript3?

    - by Victor Lin
    I want to load data from my web server, I want it be the AJAX/Comet way, my web-server long holds the request, response it until something happened. Thus, I wrote some as3 code like this: private function load(): void { var request:URLRequest = new URLRequest(url); var variables:URLVariables = new URLVariables(); variables.tick = this.tick; request.data = variables; urlLoader = new URLLoader(request); urlLoader.addEventListener(Event.COMPLETE, onComplete); urlLoader.addEventListener(IOErrorEvent.IO_ERROR , onIOError); log.info("Loading info from {0}", request.url); } It works, if the waiting time is short, but however, it failed with IOError 2032, seems the waiting time is out. Here is the problem, how can I do a long-polling with as3 and avoid the timeout error? Thanks.

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  • Cab't run a web application with GWText

    - by Anto
    I am using the GWT and the GWTExt libraries with Eclipse for the first time. I have followed all the procedures but when I go run the web application the following error appears: 1) In the Problems tab, I have this message: Description Resource Path Location Type The following classpath entry 'C:\Documents and Settings\CiuffreA\Desktop\GWTExt\gwtext-2.0.5\gwtext.jar' will not be available on the server's classpath GWTProject Unknown Google Web App Problem 2) In the Development Mode tab, the following 2 messages appears: 23:41:25.906 [ERROR] [mockupproject] Unable to load module entry point class com.example.myproject.client.MockUpProject Failed to load module 'mockupproject' from user agent 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.1.249.1042 Safari/532.5' at localhost:3853 If anyone has a clue about where the problem may be, please give me a hint...

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  • Which programming language to choose? (for a specific problem/domain, details inside)

    - by Bijan
    I am building a trading portfolio management system that is responsible for production, optimization, and simulation of non-high frequency trading portfolios (dealing with 1min or 3min bars of data, not tick data). I plan on employing Amazon web services to take on the entire load of the application. I have four choices that I am considering as language. a) Java b) C++ c) C# d) Python Here is the scope of the extremes of the project scope. This isn't how it will be, maybe ever, but it's within the scope of the requirements: Weekly simulation of 10,000,000 trading systems. (Each trading system is expected to have its own data mining methods, including feature selection algorithms which are extremely computationally-expensive. Imagine 500-5000 features using wrappers. These are not run often by any means, but it's still a consideration) Real-time production of portfolio w/ 100,000 trading strategies Taking in 1 min or 3 min data from every stock/futures market around the globe (approx 100,000) Portfolio optimization of portfolios with up to 100,000 strategies. (rather intensive algorithm) Speed is a concern, but I believe that Java can handle the load. I just want to make sure that Java CAN handle the above requirements comfortably. I don't want to do the project in C++, but I will if it's required. The reason C# is on there is because I thought it was a good alternative to Java, even though I don't like Windows at all and would prefer Java if all things are the same. Python - I've read somethings on PyPy and pyscho that claim python can be optimized with JIT compiling to run at near C-like speeds.... That's pretty much the only reason it is on this list, besides that fact that Python is a great language and would probably be the most enjoyable language to code in, which is not a factor at all for this project, but a perk. To sum up: - real time production - weekly simulations of a large number of systems - weekly/monthly optimizations of portfolios - large numbers of connections to collect data from There is no dealing with millisecond or even second based trades. The only consideration is if Java can possibly deal with this kind of load when spread out of a necessary amount of EC2 servers. Thank you guys so much for your wisdom.

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  • Building Enterprise Smartphone App &ndash; Part 4: Application Development Considerations

    - by Tim Murphy
    This is the final part in a series of posts based on a talk I gave recently at the Chicago Information Technology Architects Group.  Feel free to leave feedback. Application Development Considerations Now we get to the actual building of your solutions.  What are the skills and resources that will be needed in order to develop a smartphone application in the enterprise? Language Knowledge One of the first things you need to consider when you are deciding which platform language do you either have the most in house skill base or can you easily acquire.  If you already have developers who know Java or C# you may want to use either Android or Windows Phone.  You should also take into consideration the market availability of developers.  If your key developer leaves how easy is it to find a knowledgeable replacement? A second consideration when it comes to programming languages is the qualities exposed by the languages of a particular platform.  How well does that development language and its associated frameworks support things like security and access to the features of the smartphone hardware?  This will play into your overall cost of ownership if you have to create this infrastructure on your own. Manage Limited Resources Everything is limited on a smartphone: battery, memory, processing power, network bandwidth.  When developing your applications you will have to keep your footprint as small as possible in every way.  This means not running unnecessary processes in the background that will drain the battery or pulling more data over the airwaves than you have to.  You also want to keep your on device in as compact a format as possible. Mobile Design Patterns There are a number of design patterns that have either come to life because of smartphone development or have been adapted for this use.  The main pattern in the Windows Phone environment is the MVVM (Model-View-View-Model).  This is great for overall application structure and separation of concerns.  The fun part is trying to keep that separation as pure as possible.  Many of the other patterns may or may not have strict definitions, but some that you need to be concerned with are push notification, asynchronous communication and offline data storage. Real estate is limited on smartphones and even tablets. You are also limited in the type of controls that can be represented in the UI. This means rethinking how you modularize your application. Typing is also much harder to do so you want to reduce this as much as possible.  This leads to UI patterns.  While not what we would traditionally think of as design patterns the guidance each platform has for UI design is critical to the success of your application.  If user find the application difficult navigate they will not use it. Development Process Because of the differences in development tools required, test devices and certification and deployment processes your teams will need to learn new way of working together.  This will include the need to integrate service contracts of back-end systems with mobile applications.  You will also want to make sure that you present consistency across different access points to corporate data.  Your web site may have more functionality than your smartphone application, but it should have a consistent core set of functionality.  This all requires greater communication between sub-teams of your developers. Testing Process Testing of smartphone apps has a lot more to do with what happens when you lose connectivity or if the user navigates away from your application. There are a lot more opportunities for the user or the device to perform disruptive acts.  This should be your main testing concentration aside from the main business requirements.  You will need to do things like setting the phone to airplane mode and seeing what the application does in order to weed out any gaps in your handling communication interruptions. Need For Outside Experts Since this is a development area that is new to most companies the need for experts is a lot greater. Whether these are consultants, vendor representatives or just development community forums you will need to establish expert contacts. Nothing is more dangerous for your project timelines than a lack of knowledge.  Make sure you know who to call to avoid lengthy delays in your project because of knowledge gaps. Security Security has to be a major concern for enterprise applications. You aren't dealing with just someone's game standings. You are dealing with a companies intellectual property and competitive advantage. As such you need to start by limiting access to the application itself.  Once the user is in the app you need to ensure that the data is secure at all times.  This includes both local storage and across the wire.  This means if a platform doesn’t natively support encryption for these functions you will need to find alternatives to secure your data.  You also need to keep secret (encryption) keys obfuscated or locked away outside of the application. People can disassemble the code otherwise and break your encryption. Offline Capabilities As we discussed earlier one your biggest concerns is not having connectivity.  Because of this a good portion of your code may be dedicated to handling loss of connection and reconnection situations.  What do you do if you lose the network?  Back up all your transactions and store of any supporting data so that operations can continue off line. In order to support this you will need to determine the available flat file or local data base capabilities of the platform.  Any failed transactions will need to support a retry mechanism whether it is automatic or user initiated.  This also includes your services since they will need to be able to roll back partially completed transactions.  What ever you do, don’t ignore this area when you are designing your system. Deployment Each platform has different deployment capabilities. Some are more suited to enterprise situations than others. Apple's approach is probably the most mature at the moment. Prior to the current generation of smartphone platforms it would have been Windows CE. Windows Phone 7 has the limitation that the app has to be distributed through the same network as public facing applications. You mark them as private which means that they are only accessible by a direct URL. Unfortunately this does not make them undiscoverable (although it is very difficult). This will change with Windows Phone 8 where companies will be able to certify their own applications and distribute them.  Given this Windows Phone applications need to be more diligent with application access in order to keep them restricted to the company's employees. My understanding of the Android deployment schemes is that it is much less standardized then either iOS or Windows Phone. Someone would have to confirm or deny that for me though since I have not yet put the time into researching this platform further. Given my limited exposure to the iOS and Android platforms I have not been able to confirm this, but there are varying degrees of user involvement to install and keep applications updated. At one extreme the user just goes to a website to do the install and in other case they may need to download files and perform steps to install them. Future Bluetooth Today we use Bluetooth for keyboards, mice and headsets.  In the future it could be used to interrogate car computers or manufacturing systems or possibly retail machines by service techs.  This would open smartphones to greater use as a almost a Star Trek Tricorder.  You would get you all your data as well as being able to use it as a universal remote for just about any device or machine. Better corporation controlled deployment At least in the Windows Phone world the upcoming release of Windows Phone 8 will include a private certification and deployment option that is currently not available with Windows Phone 7 (Mango). We currently have to run the apps through the Marketplace certification process and use a targeted distribution method. Platform independent approaches HTML5 and JavaScript with Web Service has become a popular topic lately for not only creating flexible web site, but also creating cross platform mobile applications.  I’m not yet convinced that this lowest common denominator approach is viable in most cases, but it does have it’s place and seems to be growing.  Be sure to keep an eye on it. Summary From my perspective enterprise smartphone applications can offer a great competitive advantage to many companies.  They are not cheap to build and should be approached cautiously.  Understand the factors I have outlined in this series, do you due diligence and see if there is a portion of your business that can benefit from the mobile experience. del.icio.us Tags: Architecture,Smartphones,Windows Phone,iOS,Android

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