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  • How best to modernize the 2002-era J2EE app?

    - by user331465
    I have this friend.... I have this friend who works on a java ee application (j2ee) application started in the early 2000's. Currently they add a feature here and there, but have a large codebase. Over the years the team has shrunk by 70%. [Yes, the "i have this friend is". It's me, attempting to humorously inject teenage high-school counselor shame into the mix] Java, Vintage 2002 The application uses EJB 2.1, struts 1.x, DAO's etc with straight jdbc calls (mixture of stored procedures and prepared statements). No ORM. For caching they use a mixture of OpenSymphony OSCache and a home-grown cache layer. Over the last few years, they have spent effort to modernize the UI using ajax techniques and libraries. This largely involves javascript libaries (jquery, yui, etc). Client Side On the client side, the lack of upgrade path from struts1 to struts2 discouraged them from migrating to struts2. Other web frameworks became popular (wicket, spring , jsf). Struts2 was not the "clear winner". Migrating all the existing UI from Struts1 to Struts2/wicket/etc did not seem to present much marginal benefit at a very high cost. They did not want to have a patchwork of technologies-du-jour (subsystem X in Struts2, subsystem Y in Wicket, etc.) so developer write new features using Struts 1. Server Side On the server side, they looked into moving to ejb 3, but never had a big impetus. The developers are all comfortable with ejb-jar.xml, EJBHome, EJBRemote, that "ejb 2.1 as is" represented the path of least resistance. One big complaint about the ejb environment: programmers still pretend "ejb server runs in separate jvm than servlet engine". No app server (jboss/weblogic) has ever enforced this separation. The team has never deployed the ejb server on a separate box then the app server. The ear file contains multiple copies of the same jar file; one for the 'web layer' (foo.war/WEB-INF/lib) and one for the server side (foo.ear/). The app server only loads one jar. The duplications makes for ambiguity. Caching As for caching, they use several cache implementations: OpenSymphony cache and a homegrown cache. Jgroups provides clustering support Now What? The question: The team currently has spare cycles to to invest in modernizing the application? Where would the smart investor spend them? The main criteria: 1) productivity gains. Specifically reducing the time to develope new subsystems features and reduced maintenance. 2) performance/scalability. They do not care about fashion or techno-du-jour street cred. What do you all recommend? On the persistence side Switch everything (or new development only) to JPA/JPA2? Straight hibernate? Wait for Java EE 6? On the client/web-framework side: Migrate (some or all) to struts2? wicket? jsf/jsf2? As for caching: terracotta? ehcache? coherence? stick with what they have? how best to take advantage of the huge heap sizes that the 64-bit jvms offer? Thanks in advance.

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  • Faster, Simpler access to Azure Tables with Enzo Azure API

    - by Herve Roggero
    After developing the latest version of Enzo Cloud Backup I took the time to create an API that would simplify access to Azure Tables (the Enzo Azure API). At first, my goal was to make the code simpler compared to the Microsoft Azure SDK. But as it turns out it is also a little faster; and when using the specialized methods (the fetch strategies) it is much faster out of the box than the Microsoft SDK, unless you start creating complex parallel and resilient routines yourself. Last but not least, I decided to add a few extension methods that I think you will find attractive, such as the ability to transform a list of entities into a DataTable. So let’s review each area in more details. Simpler Code My first objective was to make the API much easier to use than the Azure SDK. I wanted to reduce the amount of code necessary to fetch entities, remove the code needed to add automatic retries and handle transient conditions, and give additional control, such as a way to cancel operations, obtain basic statistics on the calls, and control the maximum number of REST calls the API generates in an attempt to avoid throttling conditions in the first place (something you cannot do with the Azure SDK at this time). Strongly Typed Before diving into the code, the following examples rely on a strongly typed class called MyData. The way MyData is defined for the Azure SDK is similar to the Enzo Azure API, with the exception that they inherit from different classes. With the Azure SDK, classes that represent entities must inherit from TableServiceEntity, while classes with the Enzo Azure API must inherit from BaseAzureTable or implement a specific interface. // With the SDK public class MyData1 : TableServiceEntity {     public string Message { get; set; }     public string Level { get; set; }     public string Severity { get; set; } } //  With the Enzo Azure API public class MyData2 : BaseAzureTable {     public string Message { get; set; }     public string Level { get; set; }     public string Severity { get; set; } } Simpler Code Now that the classes representing an Azure Table entity are defined, let’s review the methods that the Azure SDK would look like when fetching all the entities from an Azure Table (note the use of a few variables: the _tableName variable stores the name of the Azure Table, and the ConnectionString property returns the connection string for the Storage Account containing the table): // With the Azure SDK public List<MyData1> FetchAllEntities() {      CloudStorageAccount storageAccount = CloudStorageAccount.Parse(ConnectionString);      CloudTableClient tableClient = storageAccount.CreateCloudTableClient();      TableServiceContext serviceContext = tableClient.GetDataServiceContext();      CloudTableQuery<MyData1> partitionQuery =         (from e in serviceContext.CreateQuery<MyData1>(_tableName)         select new MyData1()         {            PartitionKey = e.PartitionKey,            RowKey = e.RowKey,            Timestamp = e.Timestamp,            Message = e.Message,            Level = e.Level,            Severity = e.Severity            }).AsTableServiceQuery<MyData1>();        return partitionQuery.ToList();  } This code gives you automatic retries because the AsTableServiceQuery does that for you. Also, note that this method is strongly-typed because it is using LINQ. Although this doesn’t look like too much code at first glance, you are actually mapping the strongly-typed object manually. So for larger entities, with dozens of properties, your code will grow. And from a maintenance standpoint, when a new property is added, you may need to change the mapping code. You will also note that the mapping being performed is optional; it is desired when you want to retrieve specific properties of the entities (not all) to reduce the network traffic. If you do not specify the properties you want, all the properties will be returned; in this example we are returning the Message, Level and Severity properties (in addition to the required PartitionKey, RowKey and Timestamp). The Enzo Azure API does the mapping automatically and also handles automatic reties when fetching entities. The equivalent code to fetch all the entities (with the same three properties) from the same Azure Table looks like this: // With the Enzo Azure API public List<MyData2> FetchAllEntities() {        AzureTable at = new AzureTable(_accountName, _accountKey, _ssl, _tableName);        List<MyData2> res = at.Fetch<MyData2>("", "Message,Level,Severity");        return res; } As you can see, the Enzo Azure API returns the entities already strongly typed, so there is no need to map the output. Also, the Enzo Azure API makes it easy to specify the list of properties to return, and to specify a filter as well (no filter was provided in this example; the filter is passed as the first parameter).  Fetch Strategies Both approaches discussed above fetch the data sequentially. In addition to the linear/sequential fetch methods, the Enzo Azure API provides specific fetch strategies. Fetch strategies are designed to prepare a set of REST calls, executed in parallel, in a way that performs faster that if you were to fetch the data sequentially. For example, if the PartitionKey is a GUID string, you could prepare multiple calls, providing appropriate filters ([‘a’, ‘b’[, [‘b’, ‘c’[, [‘c’, ‘d[, …), and send those calls in parallel. As you can imagine, the code necessary to create these requests would be fairly large. With the Enzo Azure API, two strategies are provided out of the box: the GUID and List strategies. If you are interested in how these strategies work, see the Enzo Azure API Online Help. Here is an example code that performs parallel requests using the GUID strategy (which executes more than 2 t o3 times faster than the sequential methods discussed previously): public List<MyData2> FetchAllEntitiesGUID() {     AzureTable at = new AzureTable(_accountName, _accountKey, _ssl, _tableName);     List<MyData2> res = at.FetchWithGuid<MyData2>("", "Message,Level,Severity");     return res; } Faster Results With Sequential Fetch Methods Developing a faster API wasn’t a primary objective; but it appears that the performance tests performed with the Enzo Azure API deliver the data a little faster out of the box (5%-10% on average, and sometimes to up 50% faster) with the sequential fetch methods. Although the amount of data is the same regardless of the approach (and the REST calls are almost exactly identical), the object mapping approach is different. So it is likely that the slight performance increase is due to a lighter API. Using LINQ offers many advantages and tremendous flexibility; nevertheless when fetching data it seems that the Enzo Azure API delivers faster.  For example, the same code previously discussed delivered the following results when fetching 3,000 entities (about 1KB each). The average elapsed time shows that the Azure SDK returned the 3000 entities in about 5.9 seconds on average, while the Enzo Azure API took 4.2 seconds on average (39% improvement). With Fetch Strategies When using the fetch strategies we are no longer comparing apples to apples; the Azure SDK is not designed to implement fetch strategies out of the box, so you would need to code the strategies yourself. Nevertheless I wanted to provide out of the box capabilities, and as a result you see a test that returned about 10,000 entities (1KB each entity), and an average execution time over 5 runs. The Azure SDK implemented a sequential fetch while the Enzo Azure API implemented the List fetch strategy. The fetch strategy was 2.3 times faster. Note that the following test hit a limit on my network bandwidth quickly (3.56Mbps), so the results of the fetch strategy is significantly below what it could be with a higher bandwidth. Additional Methods The API wouldn’t be complete without support for a few important methods other than the fetch methods discussed previously. The Enzo Azure API offers these additional capabilities: - Support for batch updates, deletes and inserts - Conversion of entities to DataRow, and List<> to a DataTable - Extension methods for Delete, Merge, Update, Insert - Support for asynchronous calls and cancellation - Support for fetch statistics (total bytes, total REST calls, retries…) For more information, visit http://www.bluesyntax.net or go directly to the Enzo Azure API page (http://www.bluesyntax.net/EnzoAzureAPI.aspx). About Herve Roggero Herve Roggero, Windows Azure MVP, is the founder of Blue Syntax Consulting, a company specialized in cloud computing products and services. Herve's experience includes software development, architecture, database administration and senior management with both global corporations and startup companies. Herve holds multiple certifications, including an MCDBA, MCSE, MCSD. He also holds a Master's degree in Business Administration from Indiana University. Herve is the co-author of "PRO SQL Azure" from Apress and runs the Azure Florida Association (on LinkedIn: http://www.linkedin.com/groups?gid=4177626). For more information on Blue Syntax Consulting, visit www.bluesyntax.net.

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  • What's a clean way to have the server return a JavaScript function which would then be invoked?

    - by Khnle
    My application is architected as a host of plug-ins that have not yet been written. There's a long reason for this, but with each new year, the business logic will be different and we don't know what it will be like (Think of TurboTax if that helps). The plug-ins consist of both server and client components. The server components deals with business logic and persisting the data into database tables which will be created at a later time as well. The JavaScript manipulates the DOM for the browsers to render afterward. Each plugin lives in a separate assembly, so that they won't disturb the main application, i.e., we don't want to recompile the main application. Long story short, I am looking for a way to return JavaScript functions to the client from an Ajax get request, and execute these JavaScript functions (which are just returned). Invoking a function in Javascript is easy. The hard part is how to organize or structure so that I won't have to deal with maintenance problem. So concat using StringBuilder to end up with JavaScript code as a result of calling toString() from the string builder object is out of the question. I want to have no difference between writing JavaScript codes normally and writing Javascript codes for this dynamic purpose. An alternative is to manipulate the DOM on the server side, but I doubt that it would be as elegantly as using jQuery on the client side. I am open for a C# library that supports chainable calls like jQuery that also manipulates the DOM too. Do you have any idea or is it too much to ask or are you too confused? Edit1: The point is to avoid recompiling, hence the plug-ins architecture. In some other parts of the program, I already use the concept of dynamically loading Javascript files. That works fine. What I am looking here is somewhere in the middle of the program when an Ajax request is sent to the server. Edit 2: To illustrate my question: Normally, you would see the following code. An Ajax request is sent to the server, a JSON result is returned to the client which then uses jQuery to manipulate the DOM (creating tag and adding to the container in this case). $.ajax({ type: 'get', url: someUrl, data: {'': ''}, success: function(data) { var ul = $('<ul>').appendTo(container); var decoded = $.parseJSON(data); $.each(decoded, function(i, e) { var li = $('<li>').text(e.FIELD1 + ',' + e.FIELD2 + ',' + e.FIELD3); ul.append(li); }); } }); The above is extremely simple. But next year, what the server returns is totally different and how the data to be rendered would also be different. In a way, this is what I want: var container = $('#some-existing-element-on-the-page'); $.ajax({ type: 'get', url: someUrl, data: {'': ''}, success: function(data) { var decoded = $.parseJSON(data); var fx = decoded.fx; var data = decode.data; //fx is the dynamic function that create the DOM from the data and append to the existing container fx(container, data); } }); I don't need to know, at this time what data would be like, but in the future I will, and I can then write fx accordingly.

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  • ask help: I need to create a demo application in Java to test my new designed Java Api

    - by Christophe
    A new programmer needs yourhelp. I'm working on a porject of re-developement of Java driver for the company's PIN pad terminals. the Java Api (CPXApplicationUpdate) will allow the applications in pinpads to be updated and to be downloaded at different speed (Baud rate). the Java Api was created. i followed the protocolto build the message. the message is to send to a RS-232 port. i'm trying to use setter and getter to let the code work as an API. import java.io.InputStream; import java.io.OutputStream; import java.util.Properties; public class CPXApplicationUpdate extends CPXCommand { private int speed; // TODO: temporary variable for baud rate test stub. // speed: baud rate of the maintenance application performing DL /** Creates a new instance of CPXApplicationUpdate */ public CPXApplicationUpdate() { speed = 9600; // no baud rate change CPXProcessor.logger.fine("-------CPXApplicationUpdate constructor"); // setParam("timeout", _cmdInfo.getDefaultParValue("timeout")); } public CPXApplicationUpdate(int speedinit) { speed = speedinit; // TODO: where to get the speed? wait for user input. CPXProcessor.logger.fine("-------CPXApplicationUpdate constructor"); // setParam("timeout", _cmdInfo.getDefaultParValue("timeout")); } public void setSpeed(int speed){ this.speed = speed; } protected void buildRequest() throws ElitePortException { String trans = ""; // build the full-qualified message trans = addToRequest(trans, (char) 0); trans = addToRequest(trans, (char) 5); trans = addToRequest(trans, (char) 6); trans = addToRequest(trans, (char) 0); trans = addToRequest(trans, (char) 0); trans = addToRequest(trans, (char) 2); switch (speed) { case 9600: trans = addToRequest(trans, (char) 0x09); break; case 19200: trans = addToRequest(trans, (char) 0x0A); break; case 115200: trans = addToRequest(trans, (char) 0x0E); break; default: // TODO: unexpected baud rate. throw(); break; } trans = EncryptBinary(trans); trans = "F0." + trans; wrapRequest(trans); } protected String addToRequest(String req, char c) { CPXProcessor.logger.fine("adding char to request: I-" + (int) c + " C-" + c + " H-" + Integer.toHexString((int) c)); return req + c; } protected String addToRequest(String req, String s) { CPXProcessor.logger.fine("adding String to request: S-" + s); return req + s; } protected String addToRequest(String req) { return req; } public void analyzeResponse() { String response_transaction, response; int absLen = _response.length(); if (absLen < 4) return; response = _response.substring(3); CPXProcessor.logger.fine("stripped response=[" + response + "]"); for (int i = 0; i < response.length(); i++) { char c = response.charAt(i); CPXProcessor.logger.fine("[" + i + "] = " + c + " <> " + Integer.toHexString((int) c)); } int status = (short) response.charAt(3); CPXProcessor.logger.fine("status = " + status); _outputValues.put("status", "" + status); } please help me to correct the code. Now, i need to create a demo application to test if this java driver (Java Api) works. the value of the speed can be input by users (command line), or creat property files. how can i do that?

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  • How can I keep my MVC Views, models, and model binders as clean as possible?

    - by MBonig
    I'm rather new to MVC and as I'm getting into the whole framework more and more I'm finding the modelbinders are becoming tough to maintain. Let me explain... I am writing a basic CRUD-over-database app. My domain models are going to be very rich. In an attempt to keep my controllers as thin as possible I've set it up so that on Create/Edit commands the parameter for the action is a richly populated instance of my domain model. To do this I've implemented a custom model binder. As a result, though, this custom model binder is very specific to the view and the model. I've decided to just override the DefaultModelBinder that ships with MVC 2. In the case where the field being bound to my model is just a textbox (or something as simple), I just delegate to the base method. However, when I'm working with a dropdown or something more complex (the UI dictates that date and time are separate data entry fields but for the model it is one Property), I have to perform some checks and some manual data munging. The end result of this is that I have some pretty tight ties between the View and Binder. I'm architecturally fine with this but from a code maintenance standpoint, it's a nightmare. For example, my model I'm binding here is of type Log (this is the object I will get as a parameter on my Action). The "ServiceStateTime" is a property on Log. The form values of "log.ServiceStartDate" and "log.ServiceStartTime" are totally arbitrary and come from two textboxes on the form (Html.TextBox("log.ServiceStartTime",...)) protected override object GetPropertyValue(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor, IModelBinder propertyBinder) { if (propertyDescriptor.Name == "ServiceStartTime") { string date = bindingContext.ValueProvider.GetValue("log.ServiceStartDate").ConvertTo(typeof (string)) as string; string time = bindingContext.ValueProvider.GetValue("log.ServiceStartTime").ConvertTo(typeof (string)) as string; DateTime dateTime = DateTime.Parse(date + " " + time); return dateTime; } if (propertyDescriptor.Name == "ServiceEndTime") { string date = bindingContext.ValueProvider.GetValue("log.ServiceEndDate").ConvertTo(typeof(string)) as string; string time = bindingContext.ValueProvider.GetValue("log.ServiceEndTime").ConvertTo(typeof(string)) as string; DateTime dateTime = DateTime.Parse(date + " " + time); return dateTime; } The Log.ServiceEndTime is a similar field. This doesn't feel very DRY to me. First, if I refactor the ServiceStartTime or ServiceEndTime into different field names, the text strings may get missed (although my refactoring tool of choice, R#, is pretty good at this sort of thing, it wouldn't cause a build-time failure and would only get caught by manual testing). Second, if I decided to arbitrarily change the descriptors "log.ServiceStartDate" and "log.ServiceStartTime", I would run into the same problem. To me, runtime silent errors are the worst kind of error out there. So, I see a couple of options to help here and would love to get some input from people who have come across some of these issues: Refactor any text strings in common between the view and model binders out into const strings attached to the ViewModel object I pass from controller to the aspx/ascx view. This pollutes the ViewModel object, though. Provide unit tests around all of the interactions. I'm a big proponent of unit tests and haven't started fleshing this option out but I've got a gut feeling that it won't save me from foot-shootings. If it matters, the Log and other entities in the system are persisted to the database using Fluent NHibernate. I really want to keep my controllers as thin as possible. So, any suggestions here are greatly welcomed! Thanks

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  • MVVM Light V4 preview (BL0014) release notes

    - by Laurent Bugnion
    I just pushed to Codeplex an update to the MVVM Light source code. This is an early preview containing some of the features that I want to release later under the version 4. If you find these features useful for your project, please download the source code and build the assemblies. I will appreciate greatly any issue report. This version is labeled “V4.0.0.0/BL0014”. The “BL” string is an old habit that we used in my days at Siemens Building Technologies, called a “base level”. Somehow I like this way of incrementing the “base level” independently of any other consideration (such as alpha, beta, CTP, RTM etc) and continue to use it to tag my software versions. In Microsoft parlance, you could say that this is an early CTP of MVVM Light V4. Caveat The code is unit tested, but as we all know this does not mean that there are no bugs This code has not yet been used in production. Again, your help in testing this is greatly appreciated, so please report all bugs to me! What’s new? The following features have been implemented: Misc Various “maintenance work”. All WPF assemblies (that is .NET35 and .NET4) now allow partially trusted callers. It means that you can use them in am XBAP in partial trust mode. Testing Various test updates Added Windows Phone 7 unit tests Note: For Windows Phone 7, due to an issue in the unit test framework, not all tests can be executed. I had to isolate those tests for the moment. The error was reported to Microsoft. ViewModelBase The constructor is now public to allow serialization (especially useful on the phone to tombstone the state). ViewModelBase.MessengerInstance now returns Messenger.Default unless it is set explicitly. Previously, MessengerInstance was returning null, which was complicating the code. Two new ways to raise the PropertyChanged event have been added. See below for details. Messenger Updated the IMessenger interface with all public members from the Messenger class. Previously some members were missing. A new Unregister method is now available, allowing to unregister a recipient for a given token. RelayCommand RaiseCanExecuteChanged now acts the same in Windows Presentation Foundation than in Silverlight. In previous versions, I was relying on the CommandManager to raise the CanExecuteChanged event in WPF. However, it was found to be too unreliable, and a more direct way of raising the event was found preferable. See below for details. Raising the PropertyChanged event A very much requested update is now included: the ability to raise the PropertyChanged event in a viewmodel without using “magic strings”. Personally, I don’t see strings as a major issue, thanks to two features of the MVVM Light Toolkit: In the DEBUG configuration, every time that the RaisePropertyChanged method is called, the name of the property is checked against all existing properties of the viewmodel. Should the property name be misspelled (because of a typo or refactoring), an exception is thrown, notifying the developer that something is wrong. To avoid impacting the performance, this check is only made in DEBUG configuration, but that should be enough to warn the developers in case they miss a rename. The property name is defined as a public constant in the “mvvminpc” code snippet. This allows checking the property name from another class (for example if the PropertyChanged event is handled in the view). It also allows changing the property name in one place only. However, these two safeguards didn’t satisfy some of the users, who requested another way to raise the PropertyChanged event. In V4, you can now do the following: Using lambdas private int _myProperty; public int MyProperty { get { return _myProperty; } set { if (_myProperty == value) { return; } _myProperty = value; RaisePropertyChanged(() => MyProperty); } } This raises the property changed event using a lambda expression instead of the property name. Light reflection is used to get the name. This supports Intellisense and can easily be refactored. You can also broadcast a PropertyChangedMessage using the Messenger.Default instance with: private int _myProperty; public int MyProperty { get { return _myProperty; } set { if (_myProperty == value) { return; } var oldValue = _myProperty; _myProperty = value; RaisePropertyChanged(() => MyProperty, oldValue, value, true); } } Using no arguments When the RaisePropertyChanged method is called within a setter, you can also omit the property name altogether. This will fail if executed outside of the setter however. Also, to avoid confusion, there is no way to broadcast the PropertyChangedMessage using this syntax. private int _myProperty; public int MyProperty { get { return _myProperty; } set { if (_myProperty == value) { return; } _myProperty = value; RaisePropertyChanged(); } } The old way Of course the “old” way is still supported, without broadcast: public const string MyPropertyName = "MyProperty"; private int _myProperty; public int MyProperty { get { return _myProperty; } set { if (_myProperty == value) { return; } _myProperty = value; RaisePropertyChanged(MyPropertyName); } } And with broadcast: public const string MyPropertyName = "MyProperty"; private int _myProperty; public int MyProperty { get { return _myProperty; } set { if (_myProperty == value) { return; } var oldValue = _myProperty; _myProperty = value; RaisePropertyChanged(MyPropertyName, oldValue, value, true); } } Performance considerations It is notorious that using reflection takes more time than using a string constant to get the property name. However, after measuring for all platforms, I found the differences to be very small. I will measure more and submit the results to the community for evaluation, because some of the results are actually surprising (for example, using the Messenger to broadcast a PropertyChangedMessage does not significantly increase the time taken to raise the PropertyChanged event and update the bindings). For now, I submit this code to you, and would be delighted to hear about your own results. Raising the CanExecuteChanged event manually In WPF, until now, the CanExecuteChanged event for a RelayCommand was raised automatically. Or rather, it was attempted to be raised, using a feature that is only available in WPF called the CommandManager. This class monitors the UI and when something occurs, it queries the state of the CanExecute delegate for all the commands. However, this proved unreliable for the purpose of MVVM: Since very often the value of the CanExecute delegate changes according to non-UI events (for example something changing in the viewmodel or in the model), raising the CanExecuteChanged event manually is necessary. In Silverlight, the CommandManager does not exist, so we had to raise the event manually from the start. This proved more reliable, and I now changed the WPF implementation of the RaiseCanExecuteChanged method to be the exact same in WPF than in Silverlight. For instance, if a command must be enabled when a string property is set to a value other than null or empty string, you can do: public MainViewModel() { MyTestCommand = new RelayCommand( () => DoSomething(), () => !string.IsNullOrEmpty(MyProperty)); } public const string MyPropertyName = "MyProperty"; private string _myProperty = string.Empty; public string MyProperty { get { return _myProperty; } set { if (_myProperty == value) { return; } _myProperty = value; RaisePropertyChanged(MyPropertyName); MyTestCommand.RaiseCanExecuteChanged(); } } Logo update I made a minor change to the logo: Some people found the lack of the word “light” (as in MVVM Light Toolkit) confusing. I thought it was cool, because the feather suggests the idea of lightness, however I can see the point. So I added the word “light” to the logo. Things should be quite clear now. What’s next? This is only the first of a series of releases that will bring MVVM Light to V4. In the next weeks, I will continue to add some very requested features and correct some issues in the code. I will probably continue this fashion of releasing the changes to the public as source code through Codeplex. I would be very interested to hear what you think of that, and to get feedback about the changes. Cheers, Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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  • Why doesn't PHP's oci_connect return false?

    - by absolethe
    I have a situation in which we have two production databases that synchronize with one other. Server One is considered the primary. Sometimes due to maintenance or a disaster Server Two will become primary. In some of our code that means we have to manually go in and edit the server name for database connections. I find this annoying, so the last thing I wrote I put the server information for both and set up a loop. If oci_connect failed on the Server One 3 times it would move on to Server Two. If Server Two failed 3 times it would notify the user a connection couldn't be made. This has worked fine most times we've had the situation of switching the servers. Yesterday, for example, it worked fine. Today it didn't. It just sat and spun endlessly. No error in the PHP error log. No failure to move on from. No error output to the screen. Nothing for 5 minutes. So then I had to manually edit the stupid config file. I asked what could possibly be different and I was told "yesterday the database was down, but not the server. today the server is down." Okay...? But I don't see a distinction. I would expect oci_connect to return false if it can't establish any sort of communication with the server. I'd expect it to timeout and error. Not just pass it on when it receives an error code from the server. What if there's a network problem, for example? Is this a bug in oci_connect or is there a possibility that something in our PHP configuration gives oci_connect a crazily long timeout? If it is a sort of "bug" is there some way I can check to see if the server is up first? Like a ping? (Of course when I did a ping through the command prompt I got a response from Server One and then was told, "it's back now" although I am skeptical about the timing on that.) Anyway, if anyone could shed some light on why oci_connect might run endlessly without failing and how to keep it from doing so I'd be grateful. -- Edit: My code looks like the examples on PHP.net only in some loops. $count = count($servers); for($i = 0; $i < $count; $i++){ if((!isset($connection)) || ($connection == false)){ // Attempt to connect to the oracle database $connection = @oci_connect($servers[$i]["user"], $servers[$i]["pass"], $servers[$i]["conid"]) or ($conn_error = oracle_error()); // Try again if there was a failure if(($connection == false) || (isset($con_error))){ // Three (two more) tries per alternative for($j = $st; $j < $fn; $j++){ // Try again to connect $connection = @oci_connect($servers[$i]["user"], $servers[$i]["pass"], $servers[$i]["conid"]) or ($conn_error = oracle_error()); } // for($j = 2; $j < 4; $j++) } // if($connection == false) } // if(!isset($connection) || ($connection == false)) } // for($i = 0; $i < $count; $i++)

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  • MSTest VS2010 - DeploymentItem copying files to different locations on different machines

    - by Jack
    I have found that DeploymentItem [TestClass(), DeploymentItem(@"TestData\")] is not copying my test data files to the same location when tests are built and run on different machines. The test data files are copied to the "bin\debug" directory in the test project on my machine, but on my friend's machine they are copied to "TestResults\*name_machine YY-MM-DD HH_MM_SS*\Out". The bin\debug directory on my machine can be obtained with the code: string appDirectory = Path.GetDirectoryNameSystem.Reflection.Assembly.GetExecutingAssembly().Location; and the same code will return "TestResults\*name_machine YY-MM-DD HH_MM_SS*\Out" on my friends PC. This however isn't really the problem. The problem is that the test data files I have made have a folder structure, and this folder structure is only maintained on my machine when copied to bin\debug, whereas on my friends machine only the files are added to the "TestResults\*name_machine YY-MM-DD HH_MM_SS*\Out" directory. This means that tests will pass on my machine and fail on his! Is there a way to ensure that DeploymentItem always copys to the bin\debug folder? Or a way to ensure that the folder structure will be retained when DeploymentItem copies the files to the "TestResults\*name_machine YY-MM-DD HH_MM_SS*\Out" folder?

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  • ASP.NET websites under IIS 7.5 (Windows 7) running extremely slow

    - by emzero
    I've just installed Windows 7 x64 Ultimate on my desktop PC. I installed IIS, Visual Studio 2008, registered ASP.NET, etc. I have this ASP.NET 3.5 website I'm working on running EXTREMELY slow on this new IIS. On STA and PROD servers (Windows 2003 Server) and on my old XP/IIS 5.1 everything runs smoothly. A page which usually takes 1-2 seconds to load is taking 8 seconds!!! I saw this post on IIS forum. It says something about Vista/7 not pooling connections (just to let you know, the website is running locally but it's connecting to a SQL Server 2005 hosted on a remote server). It seems that it takes a while to "start loading" the page... I mean, I click refresh and it stays for several seconds "Waiting for localhost"... Then when it gets response it loads the whole page normally... I don't have a clue how to force Win7/IIS7.5 to pool database connections. EDIT: I've created a new empty ASP.NET web application to see if the problems happens too. The answer is no, it responds fast as it should with an empty default page. Maybe is something related to the DB connection. I will do a further test. It should be a way to fix it... EDIT 2: Debugging the app I noticed that the delay occurs AFTER the execution of .NET code (Page_Load, etc)... so the delay seems to be somewhere when IIS serves the page to the browser.

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  • Problem interfacing GSM USB modem to Java application

    - by varun
    I am working on an open-source application called FrontlineSMS which can be interfaced with GSM modems to send and receive SMS. The windows installer that is available through their website works fine. Since i wanted to modify it, I got the source code and built the jar and tried to launch it. When I plug in the GSM modem and launch the application, it sometimes detects the GSM device and i am even able to send and receive SMS. Or else 1.) I get the following error- Launching FrontlineSMS for Windows... Stable Library ========================================= Native lib Version = RXTX-2.1-7 Java lib Version = RXTX-2.1-7 Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Access is de ied. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x5 at /home/bob/foo/rxtx-devel/build/../src/termios.c(860): Access is de ied. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x57 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2352): The parame er is incorrect. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. Error 0x1 at /home/bob/foo/rxtx-devel/build/../src/termios.c(2497): Incorrect f nction. 2.) OR the application sometimes crashes by creating a log file which contains: # # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x10009ccb, pid=4452, tid=3464 # # JRE version: 6.0_20-b02 # Java VM: Java HotSpot(TM) Client VM (16.3-b01 mixed mode, sharing windows-x86 ) # Problematic frame: # C [rxtxSerial.dll+0x9ccb] # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. # --------------- T H R E A D --------------- Current thread (0x03433000): JavaThread "SmsModem :: COM18" daemon [_thread_in_native, id=3464, stack(0x070a0000,0x070f0000)] siginfo: ExceptionCode=0xc0000005, writing address 0x038cfa10 Registers: EAX=0x038cfa08, EBX=0x00000003, ECX=0x7c802413, EDX=0x00000001 ESP=0x070ef800, EBP=0x070ef9e8, ESI=0x3360b898, EDI=0x03433000 EIP=0x10009ccb, EFLAGS=0x00010202 Top of Stack: (sp=0x070ef800) 0x070ef800: 3360b8a0 6d9fbc40 6da2ed98 ffffffff 0x070ef810: 070ef848 6d8f0a2c 6d8f0340 070ef95c 0x070ef820: 070ef864 00000dfb 03433000 038cfa08 0x070ef830: 00000007 00000001 00000001 0000000a 0x070ef840: 03433bf4 fffffffe 070ef8f4 6d8f0b7a 0x070ef850: 070ef95c 03433bf8 6da6f210 6da6f538 0x070ef860: 070ef868 03433bf4 27f18708 27f18708 0x070ef870: 22eb9810 03433bc4 00000001 070ef898 Instructions: (pc=0x10009ccb) 0x10009cbb: 45 1c 7c 19 8b 85 44 fe ff ff 8b 95 4c fe ff ff 0x10009ccb: 89 50 08 8b 55 f4 89 d0 e9 f8 01 00 00 c7 85 50 Stack: [0x070a0000,0x070f0000], sp=0x070ef800, free space=13e070ef334k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) C [rxtxSerial.dll+0x9ccb] C [rxtxSerial.dll+0xa05e] j gnu.io.RXTXPort.readByte()I+0 j gnu.io.RXTXPort$SerialInputStream.read()I+61 j org.smslib.CSerialDriver.getResponse()Ljava/lang/String;+36 j net.frontlinesms.smsdevice.SmsModem._doDetection()Z+172 j net.frontlinesms.smsdevice.SmsModem.run()V+18 v ~StubRoutines::call_stub V [jvm.dll+0xf049c] V [jvm.dll+0x17fcf1] V [jvm.dll+0xf0667] V [jvm.dll+0xf06dd] V [jvm.dll+0x11a2a0] V [jvm.dll+0x1ddb14] V [jvm.dll+0x17f96c] C [msvcr71.dll+0x9565] C [kernel32.dll+0xb729] Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) j gnu.io.RXTXPort.readByte()I+0 j gnu.io.RXTXPort$SerialInputStream.read()I+61 j org.smslib.CSerialDriver.getResponse()Ljava/lang/String;+36 j net.frontlinesms.smsdevice.SmsModem._doDetection()Z+172 j net.frontlinesms.smsdevice.SmsModem.run()V+18 v ~StubRoutines::call_stub --------------- P R O C E S S --------------- Java Threads: ( => current thread ) =>0x03433000 JavaThread "SmsModem :: COM18" daemon [_thread_in_native, id=3464, stack(0x070a0000,0x070f0000)] 0x0344b800 JavaThread "D3D Screen Updater" daemon [_thread_blocked, id=4404, stack(0x03dd0000,0x03e20000)] 0x002b7800 JavaThread "DestroyJavaVM" [_thread_blocked, id=3236, stack(0x008c0000,0x00910000)] 0x03f6f400 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=1888, stack(0x038e0000,0x03930000)] 0x03ec2400 JavaThread "AWT-Shutdown" [_thread_blocked, id=4300, stack(0x03740000,0x03790000)] 0x032d8c00 JavaThread "EmailServerHandler" [_thread_blocked, id=5708, stack(0x03830000,0x03880000)] 0x032f7000 JavaThread "Incoming message processor" [_thread_blocked, id=4184, stack(0x03650000,0x036a0000)] 0x03004c00 JavaThread "AWT-Windows" daemon [_thread_in_native, id=4828, stack(0x035a0000,0x035f0000)] 0x0303f400 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=3768, stack(0x03500000,0x03550000)] 0x02b1e800 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=4164, stack(0x02dd0000,0x02e20000)] 0x02b18c00 JavaThread "CompilerThread0" daemon [_thread_blocked, id=2936, stack(0x02d80000,0x02dd0000)] 0x02b17400 JavaThread "Attach Listener" daemon [_thread_blocked, id=5444, stack(0x02d30000,0x02d80000)] 0x02b15c00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=4976, stack(0x02ce0000,0x02d30000)] 0x02b0d800 JavaThread "Finalizer" daemon [_thread_blocked, id=5876, stack(0x02c90000,0x02ce0000)] 0x02b0c400 JavaThread "Reference Handler" daemon [_thread_blocked, id=5984, stack(0x02c40000,0x02c90000)] Other Threads: 0x02b0ac00 VMThread [stack: 0x02bf0000,0x02c40000] [id=4508] 0x02b29800 WatcherThread [stack: 0x02e20000,0x02e70000] [id=6080] VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: None Heap def new generation total 7808K, used 4003K [0x22990000, 0x23200000, 0x27ee0000) eden space 6976K, 45% used [0x22990000, 0x22ca8e90, 0x23060000) from space 832K, 100% used [0x23060000, 0x23130000, 0x23130000) to space 832K, 0% used [0x23130000, 0x23130000, 0x23200000) tenured generation total 17208K, used 15192K [0x27ee0000, 0x28fae000, 0x32990000) the space 17208K, 88% used [0x27ee0000, 0x28db6100, 0x28db6200, 0x28fae000) compacting perm gen total 13824K, used 13655K [0x32990000, 0x33710000, 0x36990000) the space 13824K, 98% used [0x32990000, 0x336e5f98, 0x336e6000, 0x33710000) ro space 10240K, 51% used [0x36990000, 0x36ebae00, 0x36ebae00, 0x37390000) rw space 12288K, 54% used [0x37390000, 0x37a272d8, 0x37a27400, 0x37f90000) Dynamic libraries: 0x00400000 - 0x00424000 C:\WINDOWS\system32\java.exe 0x7c900000 - 0x7c9b2000 C:\WINDOWS\system32\ntdll.dll 0x7c800000 - 0x7c8f6000 C:\WINDOWS\system32\kernel32.dll 0x77dd0000 - 0x77e6b000 C:\WINDOWS\system32\ADVAPI32.dll 0x77e70000 - 0x77f02000 C:\WINDOWS\system32\RPCRT4.dll 0x77fe0000 - 0x77ff1000 C:\WINDOWS\system32\Secur32.dll 0x7c340000 - 0x7c396000 C:\Program Files\Java\jre6\bin\msvcr71.dll 0x6d800000 - 0x6da97000 C:\Program Files\Java\jre6\bin\client\jvm.dll 0x7e410000 - 0x7e4a1000 C:\WINDOWS\system32\USER32.dll 0x77f10000 - 0x77f59000 C:\WINDOWS\system32\GDI32.dll 0x76b40000 - 0x76b6d000 C:\WINDOWS\system32\WINMM.dll 0x76390000 - 0x763ad000 C:\WINDOWS\system32\IMM32.DLL 0x6d7b0000 - 0x6d7bc000 C:\Program Files\Java\jre6\bin\verify.dll 0x6d330000 - 0x6d34f000 C:\Program Files\Java\jre6\bin\java.dll 0x6d290000 - 0x6d298000 C:\Program Files\Java\jre6\bin\hpi.dll 0x76bf0000 - 0x76bfb000 C:\WINDOWS\system32\PSAPI.DLL 0x6d7f0000 - 0x6d7ff000 C:\Program Files\Java\jre6\bin\zip.dll 0x6d000000 - 0x6d14a000 C:\Program Files\Java\jre6\bin\awt.dll 0x73000000 - 0x73026000 C:\WINDOWS\system32\WINSPOOL.DRV 0x77c10000 - 0x77c68000 C:\WINDOWS\system32\msvcrt.dll 0x774e0000 - 0x7761d000 C:\WINDOWS\system32\ole32.dll 0x773d0000 - 0x774d3000 C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83\COMCTL32.dll 0x77f60000 - 0x77fd6000 C:\WINDOWS\system32\SHLWAPI.dll 0x5ad70000 - 0x5ada8000 C:\WINDOWS\system32\uxtheme.dll 0x74720000 - 0x7476c000 C:\WINDOWS\system32\MSCTF.dll 0x755c0000 - 0x755ee000 C:\WINDOWS\system32\msctfime.ime 0x7c9c0000 - 0x7d1d7000 C:\WINDOWS\system32\shell32.dll 0x6d230000 - 0x6d284000 C:\Program Files\Java\jre6\bin\fontmanager.dll 0x68000000 - 0x68036000 C:\WINDOWS\system32\rsaenh.dll 0x769c0000 - 0x76a74000 C:\WINDOWS\system32\USERENV.dll 0x5b860000 - 0x5b8b5000 C:\WINDOWS\system32\netapi32.dll 0x6d610000 - 0x6d623000 C:\Program Files\Java\jre6\bin\net.dll 0x71ab0000 - 0x71ac7000 C:\WINDOWS\system32\WS2_32.dll 0x71aa0000 - 0x71aa8000 C:\WINDOWS\system32\WS2HELP.dll 0x71a50000 - 0x71a8f000 C:\WINDOWS\System32\mswsock.dll 0x76f20000 - 0x76f47000 C:\WINDOWS\system32\DNSAPI.dll 0x76fb0000 - 0x76fb8000 C:\WINDOWS\System32\winrnr.dll 0x76f60000 - 0x76f8c000 C:\WINDOWS\system32\WLDAP32.dll 0x16080000 - 0x160a5000 C:\Program Files\Bonjour\mdnsNSP.dll 0x76d60000 - 0x76d79000 C:\WINDOWS\system32\Iphlpapi.dll 0x63560000 - 0x63568000 C:\Program Files\National Instruments\Shared\mDNS Responder\nimdnsNSP.dll 0x63550000 - 0x63559000 C:\WINDOWS\system32\nimdnsResponder.dll 0x78130000 - 0x781cb000 C:\WINDOWS\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_e6967989\MSVCR80.dll 0x76fc0000 - 0x76fc6000 C:\WINDOWS\system32\rasadhlp.dll 0x10000000 - 0x10012000 C:\Documents and Settings\bjz677\Desktop\client run\rxtxSerial.dll 0x73d90000 - 0x73db7000 C:\WINDOWS\system32\crtdll.dll 0x4fdd0000 - 0x4ff76000 C:\WINDOWS\system32\d3d9.dll 0x038d0000 - 0x038d6000 C:\WINDOWS\system32\d3d8thk.dll 0x77c00000 - 0x77c08000 C:\WINDOWS\system32\VERSION.dll 0x6d630000 - 0x6d639000 C:\Program Files\Java\jre6\bin\nio.dll 0x03930000 - 0x03977000 C:\Program Files\Iomega\DriveIcons\IMGHOOK.DLL 0x605d0000 - 0x605d9000 C:\WINDOWS\system32\mslbui.dll 0x77120000 - 0x771ab000 C:\WINDOWS\system32\OLEAUT32.DLL VM Arguments: java_command: net.frontlinesms.DesktopLauncher Launcher Type: SUN_STANDARD Environment Variables: JAVA_HOME=C:\Program Files\Java\jdk1.6.0_20\bin CLASSPATH=.;C:\Program Files\Java\jre6\lib\ext\QTJava.zip; PATH=C:\Program Files\Intel\MKL\10.0.2.019\ia32\bin;C:\Program Files\Intel\VTune\CGGlbCache;C:\Program Files\Intel\VTune\Analyzer\Bin;C:\Program Files\Intel\VTune\Shared\Bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;s:\datamart\bin;C:\Program Files\ATI Technologies\ATI.ACE\;C:\Program Files\IVI\bin;c:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\MATLAB\R2007b\bin;C:\Program Files\MATLAB\R2007b\bin\win32;C:\VXIPNP\WinNT\Bin;C:\Program Files\Intel\Compiler\Fortran\10.1.021\\IA32\Lib;C:\Program Files\Intel\Compiler\Fortran\10.1.021\\EM64T\Lib;C:\VXIPNP\WinNT\Bin\;C:\WINDOWS\system32\WindowsPowerShell\v1.0;C:\WINDOWS\system32\WindowsPowerShell\v1.0;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Java\jdk1.6.0_20\bin USERNAME=xxx OS=Windows_NT PROCESSOR_IDENTIFIER=x86 Family 6 Model 15 Stepping 2, GenuineIntel --------------- S Y S T E M --------------- OS: Windows XP Build 2600 Service Pack 3 CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 15 stepping 2, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3 Memory: 4k page, physical 2094960k(1063364k free), swap 4032536k(3038408k free) vm_info: Java HotSpot(TM) Client VM (16.3-b01) for windows-x86 JRE (1.6.0_20-b02), built on Apr 12 2010 13:52:23 by "java_re" with MS VC++ 7.1 (VS2003) time: Wed Jun 16 11:53:40 2010 elapsed time: 45 seconds Anyone knows what caused this? Please answer keeping in mind I am new to Java. Thanks, Varun

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  • iPhone: Software Development And Distribution

    - by xsl
    I have a few quick questions about the iPhone software development. I did some research about the topic, but there are a few specific things I would like to ask here, because I will have to estimate the cost of the required hardware and software, before I am allowed to buy anything. I never did any Mac development nor have I ever owned an iPhone, so needless to say this is quite hard for me. I will buy an iMac mini with 2 GB RAM for iPhone development. I will have to use it at the same time as my regular PC, but the majority of the time I won't use the Mac at all. Do I have to buy an additional monitor, a mouse and a keyboard or is there a better solution? I will have to port a C library to the iPhone platform and develop an iPhone application that uses the ported library. Do I need anything else than the iPhone SDK to do this? If I use an external library (see above), can I test the application with the integrated emulator, or is it recommend to buy the device? In a later phase of the project I will have to buy an iPhone, but I will have to wait until the iPhone 4 is released here in Europe, because the application requires a camera. In addition to this I will have to send data to a remote webservice. Aside from these two things I don't require any other features. Can I just buy the iPhone online from another country (the iPhones here are sim locked), or should I buy one with a contract? When the application is ready, it will be installed on a few iPhones owned by our customer. Because of security reasons it is crucial that there is no third party involved in this process (i.e. the application should not be distributed on the app store). Is this possible?

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  • Web application development platform recommendation

    - by TK.Maxi
    Hi all I did a year's worth of Pascal, Visual Basic and C++ 15 years ago, so suffice it to say that I'm a complete n00b & lamer when it comes to this. I really do hope that this question doesn't canned, but if it does, please be so kind as to point me in the direction of where it should be posted. I have an idea, like so many others, for a web app. I don't necessarily have the capital to outsource the development of the app right now, and I probably wouldn't want to, since non-disclosure agreements can be expensive to enforce, especially in this day and age of intercontinental outsourcing. I need the app to be usable on any mobile device (eventually), primarily on the major mobile platforms at first, on the web, (pc/mac/*ix) obviously, on mobile web browsers like opera mobile, etc. I envisage the app interacting with the major social networks like fb, orkut, msn im, twitter, et al in a way where friend's are messaged and/or wall posted, a message is posted to the users wall. Geo-location functionality is a plus, considering the service/app can be location sensitive in two ways, 1, the immediate location of the user, 2. the desired location of the user. I'd like to incorporate OpenID sign on, and the flip-side, the service will require that people (service providers) list their specialities/specialisations/interests/areas of expertise, so that matches to user requests can be made by the service, while users' requests are posted into the web universe. I've probably described a glut of apps out there, but I'd appreciate feedback on the sort of platform that I should look at using, be it hosted on something like Google's app engine, or written in android friendly code, or whatever. I'm a firm believer in herd mentality, especially at the start of a project that I have very little experience in. The more opinions, the merrier! I can't get very much more specific, since that would give the idea away. Thanks for your time and I look forward to hearing from wise and experienced and the fresh and innovative alike. Thanks

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  • Restore DB - Error RESTORE HEADERONLY is terminating abnormally.

    - by Jordon
    I have taken backup of SQL Server 2008 DB on server, and download them to local environment. I am trying to restore that database and it is keep on giving me following error. An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) ------------------------------ ADDITIONAL INFORMATION: The media family on device 'C:\go4sharepoint_1384_8481.bak' is incorrectly formed. SQL Server cannot process this media family. RESTORE HEADERONLY is terminating abnormally. (Microsoft SQL Server, Error: 3241) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.4053&EvtSrc=MSSQLServer&EvtID=3241&LinkId=20476 I have tried to create a temp DB on server and tried to restore the same backup file and that works. I have also tried no. of times downloading file from server to local pc using different options on Filezila (Auto, Binary) But its not working. After that I tried to execute following command on server. BACKUP DATABASE go4sharepoint_1384_8481 TO DISK=' C:\HostingSpaces\dbname_jun14_2010_new.bak' with FORMAT And it is giving me following error. Msg 3201, Level 16, State 1, Line 1 Cannot open backup device 'c:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Backup\ C:\HostingSpaces\dbname_jun14_2010_new.bak'. Operating system error 123(The filename, directory name, or volume label syntax is incorrect.). Msg 3013, Level 16, State 1, Line 1 BACKUP DATABASE is terminating abnormally. After researching I found following 2 useful links 1) http://support.microsoft.com/kb/290787 2) http://social.msdn.microsoft.com/Forums/en-US/sqlsetupandupgrade/thread/4d5836f6-be65-47a1-ad5d-c81caaf1044f But still I can't able to restore Database correctly. Any help would be much appreciated thanks.

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  • SPP Socket createRfcommSocketToServiceRecord will not connect

    - by philDev
    Hello, I want to use Android 2.1 to connect to an external Bluetooth device, wich is offering an SPP port to me. In this case it is an external GPS unit. When I'm trying to connect I can't connect an established socket while being in the "client" mode. Then if I try to set up a socket (being in the server role), to RECEIVE text from my PC everything works just fine. The Computer can connect as the client to the Socket on the Phone via SPP using the SSP UUID or some random UUID. So the Problem is not that I'm using the wrong UUID. But the other way around (e.g. calling connect on the established client socket) createRfcommSocketToServiceRecord(UUID uuid)) just doesn't work. Sadly I don't have the time to inspect the problem further. It would be greate If somebody could point me the right way. In the following part of the Logfile has to be the Problem. Greets PhilDev P.S. I'm going to be present during the Office hours. Here the log file: 03-21 03:10:52.020: DEBUG/BluetoothSocket.cpp(4643): initSocketFromFdNative 03-21 03:10:52.025: DEBUG/BluetoothSocket(4643): connect 03-21 03:10:52.025: DEBUG/BluetoothSocket(4643): doSdp 03-21 03:10:52.050: DEBUG/ADAPTER(2132): create_device(01:00:00:7F:B5:B3) 03-21 03:10:52.050: DEBUG/ADAPTER(2132): adapter_create_device(01:00:00:7F:B5:B3) 03-21 03:10:52.055: DEBUG/DEVICE(2132): Creating device [address = 01:00:00:7F:B5:B3] /org/bluez/2132/hci0/dev_01_00_00_7F_B5_B3 [name = ] 03-21 03:10:52.055: DEBUG/DEVICE(2132): btd_device_ref(0x10c18): ref=1 03-21 03:10:52.065: INFO/BluetoothEventLoop.cpp(1914): event_filter: Received signal org.bluez.Adapter:DeviceCreated from /org/bluez/2132/hci0 03-21 03:10:52.065: INFO/BluetoothService.cpp(1914): ... Object Path = /org/bluez/2132/hci0/dev_01_00_00_7F_B5_B3 03-21 03:10:52.065: INFO/BluetoothService.cpp(1914): ... Pattern = 00001101-0000-1000-8000-00805f9b34fb, strlen = 36 03-21 03:10:52.070: DEBUG/DEVICE(2132): *************DiscoverServices******** 03-21 03:10:52.070: INFO/DTUN_HCID(2132): dtun_client_get_remote_svc_channel: starting discovery on (uuid16=0x0011) 03-21 03:10:52.070: INFO/DTUN_HCID(2132): bdaddr=01:00:00:7F:B5:B3 03-21 03:10:52.070: INFO/DTUN_CLNT(2132): Client calling DTUN_METHOD_DM_GET_REMOTE_SERVICE_CHANNEL (id 4) 03-21 03:10:52.070: INFO/(2106): DTUN_ReceiveCtrlMsg: [DTUN] Received message [BTLIF_DTUN_METHOD_CALL] 4354 03-21 03:10:52.070: INFO/(2106): handle_method_call: handle_method_call :: received DTUN_METHOD_DM_GET_REMOTE_SERVICE_CHANNEL (id 4), len 134 03-21 03:10:52.075: ERROR/BTLD(2106): ****************search UUID = 1101*********** 03-21 03:10:52.075: INFO//system/bin/btld(2103): btapp_dm_GetRemoteServiceChannel() 03-21 03:10:52.120: DEBUG/BluetoothService(1914): updateDeviceServiceChannelCache(01:00:00:7F:B5:B3) 03-21 03:10:52.120: DEBUG/BluetoothEventLoop(1914): ClassValue: null for remote device: 01:00:00:7F:B5:B3 is null 03-21 03:10:52.120: INFO/BluetoothEventLoop.cpp(1914): event_filter: Received signal org.bluez.Adapter:PropertyChanged from /org/bluez/2132/hci0 03-21 03:10:52.305: WARN/BTLD(2106): bta_dm_check_av:0 03-21 03:10:56.395: DEBUG/WifiService(1914): ACTION_BATTERY_CHANGED pluggedType: 2 03-21 03:10:57.440: WARN/BTLD(2106): SDP - Rcvd conn cnf with error: 0x4 CID 0x43 03-21 03:10:57.440: INFO/BTL-IFS(2106): send_ctrl_msg: [BTL_IFS CTRL] send BTLIF_DTUN_SIGNAL_EVT (CTRL) 13 pbytes (hdl 10) 03-21 03:10:57.445: INFO/DTUN_CLNT(2132): dtun-rx signal [DTUN_SIG_DM_RMT_SERVICE_CHANNEL] (id 42) len 15 03-21 03:10:57.445: INFO/DTUN_HCID(2132): dtun_dm_sig_rmt_service_channel: success=1, service=00000000 03-21 03:10:57.445: ERROR/DTUN_HCID(2132): discovery unsuccessful! package de.phil_dev.android.BT; import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.UUID; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothClass; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothServerSocket; import android.bluetooth.BluetoothSocket; import android.content.Intent; import android.os.Bundle; import android.util.Log; import android.widget.Toast; public class ThinBTClient extends Activity { private static final String TAG = "THINBTCLIENT"; private static final boolean D = true; private BluetoothAdapter mBluetoothAdapter = null; private BluetoothSocket btSocket = null; private BufferedInputStream inStream = null; private BluetoothServerSocket myServerSocket; private ConnectThread myConnection; private ServerThread myServer; // Well known SPP UUID (will *probably* map to // RFCOMM channel 1 (default) if not in use); // see comments in onResume(). private static final UUID MY_UUID = UUID .fromString("00001101-0000-1000-8000-00805F9B34FB"); // .fromString("94f39d29-7d6d-437d-973b-fba39e49d4ee"); // ==> hardcode your slaves MAC address here <== // PC // private static String address = "00:09:DD:50:86:A0"; // GPS private static String address = "00:0B:0D:8E:D4:33"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); if (D) Log.e(TAG, "+++ ON CREATE +++"); mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (mBluetoothAdapter == null) { Toast.makeText(this, "Bluetooth is not available.", Toast.LENGTH_LONG).show(); finish(); return; } if (!mBluetoothAdapter.isEnabled()) { Toast.makeText(this, "Please enable your BT and re-run this program.", Toast.LENGTH_LONG).show(); finish(); return; } if (D) Log.e(TAG, "+++ DONE IN ON CREATE, GOT LOCAL BT ADAPTER +++"); } @Override public void onStart() { super.onStart(); if (D) Log.e(TAG, "++ ON START ++"); } @Override public void onResume() { super.onResume(); if (D) { Log.e(TAG, "+ ON RESUME +"); Log.e(TAG, "+ ABOUT TO ATTEMPT CLIENT CONNECT +"); } // Make the phone discoverable // When this returns, it will 'know' about the server, // via it's MAC address. // mBluetoothAdapter.startDiscovery(); BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address); Log.e(TAG, device.getName() + " connected"); // myServer = new ServerThread(); // myServer.start(); myConnection = new ConnectThread(device); myConnection.start(); } @Override public void onPause() { super.onPause(); if (D) Log.e(TAG, "- ON PAUSE -"); try { btSocket.close(); } catch (IOException e2) { Log.e(TAG, "ON PAUSE: Unable to close socket.", e2); } } @Override public void onStop() { super.onStop(); if (D) Log.e(TAG, "-- ON STOP --"); } @Override public void onDestroy() { super.onDestroy(); if (D) Log.e(TAG, "--- ON DESTROY ---"); } private class ServerThread extends Thread { private final BluetoothServerSocket myServSocket; public ServerThread() { BluetoothServerSocket tmp = null; // create listening socket try { tmp = mBluetoothAdapter .listenUsingRfcommWithServiceRecord( "myServer", MY_UUID); } catch (IOException e) { Log.e(TAG, "Server establishing failed"); } myServSocket = tmp; } public void run() { Log.e(TAG, "Beginn waiting for connection"); BluetoothSocket connectSocket = null; InputStream inStream = null; byte[] buffer = new byte[1024]; int bytes; while (true) { try { connectSocket = myServSocket.accept(); } catch (IOException e) { Log.e(TAG, "Connection failed"); break; } Log.e(TAG, "ALL THE WAY AROUND"); try { connectSocket = connectSocket.getRemoteDevice() .createRfcommSocketToServiceRecord(MY_UUID); connectSocket.connect(); } catch (IOException e1) { Log.e(TAG, "DIDNT WORK"); } // handle Connection try { inStream = connectSocket.getInputStream(); while (true) { try { bytes = inStream.read(buffer); Log.e(TAG, "Received: " + buffer.toString()); } catch (IOException e3) { Log.e(TAG, "disconnected"); break; } } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); break; } } } void cancel() { } } private class ConnectThread extends Thread { private final BluetoothSocket mySocket; private final BluetoothDevice myDevice; public ConnectThread(BluetoothDevice device) { myDevice = device; BluetoothSocket tmp = null; try { tmp = device.createRfcommSocketToServiceRecord(MY_UUID); } catch (IOException e) { Log.e(TAG, "CONNECTION IN THREAD DIDNT WORK"); } mySocket = tmp; } public void run() { Log.e(TAG, "STARTING TO CONNECT THE SOCKET"); setName("My Connection Thread"); InputStream inStream = null; boolean run = false; //mBluetoothAdapter.cancelDiscovery(); try { mySocket.connect(); run = true; } catch (IOException e) { run = false; Log.e(TAG, this.getName() + ": CONN DIDNT WORK, Try closing socket"); try { mySocket.close(); } catch (IOException e1) { Log.e(TAG, this.getName() + ": COULD CLOSE SOCKET", e1); this.destroy(); } } synchronized (ThinBTClient.this) { myConnection = null; } byte[] buffer = new byte[1024]; int bytes; // handle Connection try { inStream = mySocket.getInputStream(); while (run) { try { bytes = inStream.read(buffer); Log.e(TAG, "Received: " + buffer.toString()); } catch (IOException e3) { Log.e(TAG, "disconnected"); } } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } // starting connected thread (handling there in and output } public void cancel() { try { mySocket.close(); } catch (IOException e) { Log.e(TAG, this.getName() + " SOCKET NOT CLOSED"); } } } }

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  • WPF combobox loses Aero theme when using a style trigger

    - by Greg R
    I am using style triggers to change combo box to texbox if it's readonly, but for some reason when I apply the style, it cause the combobox theme to change from Aero to Windows Classic (the theme I currently have in use on my PC). Can I avoid this somehow? Here is my code: <ComboBox ItemsSource="{Binding Source={StaticResource AllCountries}}" SelectedValue="{Binding OrderInfoVm.BillingCountry}" DisplayMemberPath="Value" SelectedValuePath="Key" IsReadOnly="{Binding ReadOnlyMode}" Style="{StaticResource EditableDropDown}" /> <Style x:Key="EditableDropDown" TargetType="ComboBox"> <Style.Triggers> <Trigger Property="IsReadOnly" Value="True"> <Setter Property="SelectedValuePath" Value="Content" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ComboBox"> <TextBox Text="{TemplateBinding SelectedValue, Converter={StaticResource StringCaseConverter}}" BorderThickness="0" Background="Transparent" FontSize="{TemplateBinding FontSize}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" FontFamily="{TemplateBinding FontFamily}" Width="{TemplateBinding Width}" TextWrapping="Wrap"/> </ControlTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style>

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  • Question about using ServiceModelEx's "WCFLogbook" from "Programming WCF Services" book

    - by Bill
    I am attempting to compile/run a sample WCF application from Juval Lowy's website (author of Programming WCF Services & founder of IDesign). Of course the example application utilizes Juval's ServiceModelEx library and logs faults/errors to a "WCFLogbook" database. Unfortunately, when the sample app faults, I get the following new error: "Cannot open database "WCFLogbook" requested by the login. The login failed. Login failed for user 'Bill-PC\Bill'." I suspect the error occurs as a result of not finding the "WCFLogbook" database, which I believe still needs to be created. Included in the library source directory, there are two files -WCFLogbookDataSet.xsd and WCFLogbook.sql; which neither seem to be referenced anywhere within the library code. This leads me to beleive that the sql and xsd files are there to be used to create the database somehow in SQL. Could someone please advise me if I am going in the correct direction here and if whether these files can be used to create the database (and if so, how)?

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  • Handling async ASMX web service exceptions

    - by Andy
    Hi, I've developed silverlight client with makes async web services calls to a asmx web service. The problem is, I want to handle exceptions, so far as to be able to tell in the client application whether there was an exception in the webservice (and therefore will be logged local to the webservice) or whether there was a communication problem (i.e. the endpoint for the webservice was wrong). In testing both types of exceptions in my project I get the same generic exception: System.ServiceModel.CommunicationException: The remote server returned an error: NotFound. This exception is amazingly useless when an exception occured in the webservice as it clearly has been found. Is the presence of this generic error to do with security (not being allowed to see true errors)? It can't be the fact that I don't have debug strings as I'm running on a dev PC. Either way, my question is, what's the best way to handle async errors in a commercial silverlight application? Any links or ideas are most welcome! :) Thanks a lot! Andy.

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  • httpModules not working on iis7

    - by roncansan
    Hi, I have the following module public class LowerCaseRequest : IHttpModule { public void Init(HttpApplication context) { context.BeginRequest += new EventHandler(this.OnBeginRequest); } public void Dispose() { } public void OnBeginRequest(Object s, EventArgs e) { HttpApplication app = (HttpApplication)s; if (app.Context.Request.Url.ToString().ToLower().EndsWith(".aspx")) { if (app.Context.Request.Url.ToString() != app.Context.Request.Url.ToString().ToLower()) { HttpResponse response = app.Context.Response; response.StatusCode = (int)HttpStatusCode.MovedPermanently; response.Status = "301 Moved Permanently"; response.RedirectLocation = app.Context.Request.Url.ToString().ToLower(); response.SuppressContent = true; response.End(); } if (!app.Context.Request.Url.ToString().StartsWith(@"http://zeeprico.com")) { HttpResponse response = app.Context.Response; response.StatusCode = (int)HttpStatusCode.MovedPermanently; response.Status = "301 Moved Permanently"; response.RedirectLocation = app.Context.Request.Url.ToString().ToLower().Replace(@"http://zeeprico.com", @"http://www.zeeprico.com"); response.SuppressContent = true; response.End(); } } } } the web.config looks like <system.web> <httpModules> <remove name="WindowsAuthentication" /> <remove name="PassportAuthentication" /> <remove name="AnonymousIdentification" /> <remove name="UrlAuthorization" /> <remove name="FileAuthorization" /> <add name="LowerCaseRequest" type="LowerCaseRequest" /> <add name="UrlRewriter" type="Intelligencia.UrlRewriter.RewriterHttpModule, Intelligencia.UrlRewriter" /> <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </httpModules> </system.web> It works grate on my PC running XP and IIS 5.1 but on my webserver running IIS7 and WS 2008 dosn't works, please help I don't know how to work this out. Thanks

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  • WSDLs generated by Axis2 services can't be read by SoapUI or WSDL2Java

    - by RJCantrell
    I'm converting some services from Apache SOAP to Axis2, so the Java service classes already exist. I created a new project in Eclipse, imported the source, made sure that the Axis2 project facets were installed, and Axis2 emitter properties are correct. Then, in Eclipse, I selected the service class and chose "Create Web Service," choosing the Axis2 runtime. The service is up and running on my PC, and when I append "?wsdl" to the service's path, I do indeed get a WSDL that I save locally. Attempting to import this into SoapUI to build a client gives the error: ERROR:org.apache.xmlbeans.XmlException: C:\projects\soapUI\Axis2\DALService.wsdl:0: error: src-resolve: type 'SOAPException@http://www.w3.org/2001/XMLSchema' not found. The type it's referring to (SOAPException) is a holdover from the Apache SOAP services, and in the service code, I changed all "import" references in the service code (not the WSDL) from org.apache.soap.SOAPException (the old Apache SOAP package name) to javax.xml.soap.SOAPException (the Axis2 location). The code compiles and works, once I can access it, but I can't access it without generating a client. Any thoughts as to why changing the namespace of an object would keep the generated WSDLs from having the proper namespace references?

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  • Cannot connect to a SQL Server 2005 Analysis Services cube after installing SQL Server 2008 SP1.

    - by Luc
    I've been developing an application that talks directly to an SSAS 2005 OLAP cube. Note that I also have SQL Server 2008 installed, so the other day I did a Windows Update and decided to include SQL Server 2008 SP1 in my update. After doing that, my SSAS 2005 cube is no longer accessible from my application. I'm able to browse the data just fine within SQL Server 2005 BI Studio Manager, but I'm not able to connect to the cube from my application. Here is my connection string that used to work: Data Source=localhost;Provider=msolap;Initial Catalog=Adventure Works DW Here is the error message I get: Either the user, [Server]/[User], does not have access to the Adventure Works DW database, or the database does not exist. Here is the beginning of my stack trace if it would help: Microsoft.AnalysisServices.AdomdClient.AdomdErrorResponseException was unhandled by user code HelpLink="" Message="Either the user, Luc-PC\\Luc, does not have access to the Adventure Works DW database, or the database does not exist." Source="Microsoft SQL Server 2005 Analysis Services" ErrorCode=-1055391743 StackTrace: at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Microsoft.AnalysisServices.AdomdClient.IDiscoverProvider.Discover(String requestType, IDictionary restrictions, DataTable table) at Microsoft.AnalysisServices.AdomdClient.ObjectMetadataCache.Discover(AdomdConnection connection, String requestType, ListDictionary restrictions, DataTable destinationTable, Boolean doCreate) at Microsoft.AnalysisServices.AdomdClient.ObjectMetadataCache.PopulateSelf() at Microsoft.AnalysisServices.AdomdClient.ObjectMetadataCache.Microsoft.AnalysisServices.AdomdClient.IObjectCache.Populate() at Microsoft.AnalysisServices.AdomdClient.CacheBasedNotFilteredCollection.PopulateCollection() at Microsoft.AnalysisServices.AdomdClient.CacheBasedNotFilteredCollection.get_Count() at Microsoft.AnalysisServices.AdomdClient.CubesEnumerator.MoveNext() at Microsoft.AnalysisServices.AdomdClient.CubeCollection.Enumerator.MoveNext() at blah blah... I've looked for a solution for the last 4+ hours and haven't had any success. Thanks in advance for any help. Luc

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  • Restore DB - Error RESTORE HEADERONLY is terminating abnormally

    - by Jordon Willis
    I have taken backup of SQL Server 2008 DB on server, and download them to local environment. I am trying to restore that database and it is keep on giving me following error. An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) ------------------------------ ADDITIONAL INFORMATION: The media family on device 'C:\go4sharepoint_1384_8481.bak' is incorrectly formed. SQL Server cannot process this media family. RESTORE HEADERONLY is terminating abnormally. (Microsoft SQL Server, Error: 3241) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=09.00.4053&EvtSrc=MSSQLServer&EvtID=3241&LinkId=20476 I have tried to create a temp DB on server and tried to restore the same backup file and that works. I have also tried no. of times downloading file from server to local pc using different options on Filezila (Auto, Binary) But its not working. After that I tried to execute following command on server. BACKUP DATABASE go4sharepoint_1384_8481 TO DISK=' C:\HostingSpaces\dbname_jun14_2010_new.bak' with FORMAT It is giving me following error: Msg 3201, Level 16, State 1, Line 1 Cannot open backup device 'c:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Backup\ C:\HostingSpaces\dbname_jun14_2010_new.bak'. Operating system error 123(The filename, directory name, or volume label syntax is incorrect.). Msg 3013, Level 16, State 1, Line 1 BACKUP DATABASE is terminating abnormally. After researching I found the following 2 useful links: http://support.microsoft.com/kb/290787 http://social.msdn.microsoft.com/Forums/en-US/sqlsetupandupgrade/thread/4d5836f6-be65-47a1-ad5d-c81caaf1044f But I am still not able to restore Database correctly. Any help would be much appreciated. Thanks.

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  • nhibernate will not cascade delete childs

    - by marn
    The scenario is as follows, I have 3 objects (i simplified the names) named Parent, parent's child & child's child parent's child is a set in parent, and child's child is a set in child. mapping is as follows (relevant parts) parent <set name="parentset" table="pc-table" lazy="false" fetch="subselect" cascade="all-delete-orphan" inverse="true"> <key column=FK_ID_PC" on-delete="cascade"/> <one-to-many class="parentchild,parentchild-ns"/> </set> parent's child <set name="childset" table="cc-table" lazy="false" fetch="subselect" cascade="all-delete-orphan" inverse="true"> <key column="FK_ID_CC" on-delete="cascade"/> <one-to-many class="childschild,childschild-ns"/> </set> What i want to achieve is that when i delete the parent, there would be a cascade delete all the way trough to child's child. But what currently happens is this. (this is purely for mapping test purposes) getting a parent entity (works fine) IQuery query = session.CreateQuery("from Parent where ID =" + ID); IParent doc = query.UniqueResult<Parent>(); now the delete part session.Delete(doc); transaction.Commit(); After having solved the 'cannot insert null value' error with cascading and inverse i hopes this would now delete everything with this code, but only the parent is being deleted. Did i miss something in my mapping which is likely to be missed? Any hint in the right direction is more than welcome!

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  • Confusion about Kerberos, delegation and SPNs.

    - by Vilx-
    I'm trying to write a proof-of-concept application that performs Kerberos delegation. I've written all the code, and it seems to working (I'm authenticating fine), but the resulting security context doesn't have the ISC_REQ_DELEGATE flag set. So I'm thinking that maybe one of the endpoints (client or server) is forbidden to delegate. However I'm not authenticating against an SPN. Just one domain user against another domain user. As the SPN for InitializeSecurityContext() I'm passing "[email protected]" (which is the user account under which the server application is running). As I understand, domain users have delegation enabled by default. Anyway, I asked the admin to check, and the "account is sensitive and cannot be delegated" checkbox is off. I know that if my server was running as a NETWORK SERVICE and I used an SPN to connect to it, then I'd need the computer account in AD to have the "Trust computer for delegation" checkbox checked (off by default), but... this is not the case, right? Or is it? Also - when the checkbox in the computer account is set, do the changes take place immediately, or must I reboot the server PC or wait for a while?

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  • [Ruby] [gem] A GEM error shown during run the commend: gem update --system

    - by Alex
    I’m a freshman on Ruby and now trying to install ruby on my machine according to the Tutorial on http://wiki.openqa.org/display/WTR/Tutorial However, after I installed the ruby186-26, and run the command “gem update --system”, the following error occurred: C:\Documents and Settings\e482090\Desktopgem update --system c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initialize': Inval id argument - <Not Set>/.gemrc (Errno::EINVAL) from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:inopen' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initi alize' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:innew' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:in do_con figuration' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:25:inrun' from c:/ruby/bin/gem:23 C:\Documents and Settings\e482090\Desktopgem install watir c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initialize': Inval id argument - <Not Set>/.gemrc (Errno::EINVAL) from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:inopen' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/config_file.rb:51:in initi alize' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:innew' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:36:in do_con figuration' from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:25:inrun' from c:/ruby/bin/gem:23 Meanwhile, we have tried this on other machines and the result turned out ok. Thus, my question is why the error happened on my pc? Have you met this kind of error before?

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  • Hot to configure EnterpriseLibrary.Logging to only output message and timestamp

    - by thomas nn
    I am trying to log a simple string to a log file. I only need Category, message and timestamp. Thus I have configured app.config like this: <listeners> <add name="Flat File Destination" fileName="C:\Log\Phoenix.Common.Tests\Debug.log" header="-----------------------------------------------------------------" formatter="Text Formatter" footer="" rollFileExistsBehavior="Increment" rollInterval="Midnight" rollSizeKB="0" timeStampPattern="yyyy-MM-dd" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> </listeners> <formatters> <add name="Text Formatter" template="Category: {category} Message: {message} Timestamp: {timestamp}" type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/> </formatters> But I get all kind of additional stuff in my log file: Priority: 50 EventId: 50 Severity: Verbose Title:Testing Log Machine: DK-PC-P4740 App Domain: TestAppDomain: 80803a4f-8e18-47bb-901e-cdac784c8041 ProcessId: 6492 Process Name: C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\QTAgent32.exe How do I avoid this additional stuff? Can someone send me a link to an example that only log the message into the log file? /Thanks

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