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• Using LINQ to query database through a proxy server of some kind?

  - by Mustafakidd

  Hey All Sorry for using (perhaps) the wrong lingo, but my question may be clearer if you view this diagram as you read it. http://dl.dropbox.com/u/13256/DIAGRAM.PNG Our client is requiring us to adhere to the server configuration (poorly) diagrammed in the above image. The web server is accessible over port 80 and is where our web application is hosted - a second firewall permits this web server to access a second server which in turn is the only server permitted to access the database server. My question is: How do I deploy a web application that uses LINQ-to-SQL in this environment? Is there a way to proxy my LINQ queries through the app server so that the database connection goes through that server? This is uncharted territory for me, as we always have had access to the DB server directly from our web server in the past. Any help is appreciated. Thanks Mustafa

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• ERD-CLASS design

  - by Mahesh

  Hello guyz,i am new to daatbase and class diagram.I just get scenarios from internet and try to develop ERD and Class Diagram for them.But the following scenario has caused me some problems, and i am not sure about my design. "Whenever an employee fills leave application form, the leave application should be appeared for approval to his/her team leader. Team Leader has the option to change the date of requested leave and to approve or reject the leave. Employee also has the option to change date of previously unapproved leaves or to cancel any of unapproved leave. In case of team leader, he can approve his own leaves. Management should be able to create categories of leaves like (Casual, Sick, Planned work, etc) and should be able to adjust the days allocated to each type of leave". I have identified these as entities for ERD 1) Employee(I think i dont need to make entity for Technical lead,since he is an employee) 2) LeaveHistory 3) LeaveCategory Plz correct me if the system need more classes or entities

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• Create UML diagrams after or before coding?

  - by ajsie

  I can clearly see the benefits of having UML diagrams showing your infrastructure of the application (class names, their members, how they communicate with each other etc). I'm starting a new project right now and have already structured the database (with visual paradigm). I want to use some design patterns to guide me how to code the classes. I wonder, should I code the classes first before I create UML diagram of it (maybe out of the code... seems possible) or should I first create UML diagram and then code (or generate code from the UML, seems possible that too). What are you experiences telling you is the best way?

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• Use case modelling for calculator

  - by kyrogue

  hi, i need help modelling a use case diagram from a topic, it will be in java GUI Design a Calculator that 1.Allow user to key in a legitimate arithmetic statement that involves number, operator +, - and bracket '(' and ')' ; 2.When user press “Calculate” button, display result; 3.Some legitimate statement would be ((3+2)-4+2) (equals 3) and (-2+3)-(3-1) (equals -1); 4.You should NOT use a pre-existing function that just take in the statement as a parameter and returns the result but you should write the logic of parsing every character in your code. 5.Store the last statement and answer so it is displayed when user press the “Last calculation” button. i have designed two use case diagrams using UML on netbeans 6.5.1, one of the use case i am not sure whether is it containing too much use cases etc, while the other is what i think could be too vague for the topic.i hope to get some feedback on whether the use case diagram are appropriate, thanks.

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• Activation rectangle

  - by Knowing me knowing you

  Making UML sequence diagram in VS 2010RC I've observed that there is no activation rectangle in first object. Is this correct? Not according to my tutor and I have to quote him: "Finally, you have no activation rectangle for the userInterface instance, so the initial message could never have been sent." But I'm thinking that if guys from VS did that it must/should be correct. Another thing he is picking me at is and I'm quoting him: "In class diagram the generalisation arrow heads should be open triangles." In my opinion there isn't strictly said that they must be open triangles especially when software lets you choose their form. Looking forward to hear your opinions. Thanks for answers.

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• Code understanding, reverse engineering, best concepts and tools. Java.

  - by core07

  One of most demanding tasks for any programmer, architect is understanding other's code. E.g. I am contractor, hired to rescue some project very quickly. Fix bugs, plan global refactoring and therefore I need most efficient way to understand the code. What is the list of concepts, their priority and best tools for this? Of what I know: reverse code engineering to create object models (creating of diagram per package is not so convenient), create sequence diagrams (the tool connects in debug mode to the system and generates diagrams from runtime). Some visualizing techniques, using some tools to work not just with .java but also with e.g. JPA implementors like Hibernate. Generate diagram for not all the codebase, but add some class and then classes used by it. Is Sparx Enterprise Architect state of the art in reverse engineering or far from that. Any other better tools? Ideally would be that tool makes me understand the code as if I wrote it myself :)

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• How do I get a right outer join in L2E?

  - by Dan

  I have two tables that I set up through the VS Entity Data Model Diagram tool. I'm trying to do a right outer join and it doesn't return results from the 2nd table. I have set up a 0..1 to MANY relationship from the diagram tool. When I run a Linq-To-Entities query, it still defaults to an INNER JOIN. From my understanding of entities, if I set up the relationship using VS, when I join the tables, it should automagically figure out the join syntax based on the relationship I supply. It doesn't seem to be doing that. I am using EF v1 (not Linq-to-Sql). Query I'm running: from s in SomeTable join t in SomeOtherTable on s.ID equals t.ID select new { s.MyFieldName, t.MyOtherFieldName }

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• Wiki for requirements engineering

  - by Shanon

  Hi, I'm looking to to build a wiki based tool the helps/aides in the requirements engineering process. More specifically I am hoping to end up with a tool that helps inexperienced users easily create and design requirements documents on a wiki platform. I was wondering if there exist any wiki/wiki platforms that either already exist or are easily extendible or would be worth looking at that for this purpose. For instance some of the features I was hoping to add would be to add structure to a document so that information is filled out in a standardised manner. Another idea I was looking at was to somehow create relationships between different types of documents (for example- a goal diagram gets evolves/ helps in the development of the class diagram). So far I have come across FOSwiki which claims to to fully customisalble...but I'm not sure what it means and what I can really do with that. Any input on FOSwiki is also highly appreciated.

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• Which UML tool can really round-trip java code?

  - by Geir Ove

  Hello, Many UML tools claim to do forward / reverse engineering of Java code. However, it turns out from prior experience, that few tools really work in this area. I haven't been doing Java projects for 3 years, and want to get up to date with the current status in this area. In Particular I am interested in Creating State Machine Skeletons from Diagram, be able to create hooks to my own code, and be able to reverse engineer the State Diagram back (Do not want to change the State Machine itself outside the Tool). Which UML tools works in this area? Enterprise Architecht? Visual Paradigm? Others? Geir Ove Norway

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• I've created a database table using Visual Studio for my C# program. Now what?

  - by Kevin

  Hi! I'm very new to C#, so please forgive me if I've overlooked something here. I've created a database using Visual Studio (add new item service-based database) called LoadForecast.mdf. I then created a table called ForecastsDB and added some fields. My main question is this: I've created a console application with the intention of writing some data to the newly created database. I've added LoadForecast.mdf as a data source for my program, but is there anything else I should do? I saw an example where the next step was adding a "data diagram", but this was for a visual application, not a console application. Do I still need to diagram the database for my console app? I just want to be able to write new records out to my database table and wasn't sure if there were any other things I needed to do for the VS environment to be "aware" of my database. Thanks for any advise!

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• How to use CSS to ensure items remain offscreen even if window is resized?

  - by Ashley Ward

  I am trying to implement a type of slider using jquery. However this question is about the CSS involved in trying to achieve the functionality. My site design occupies a central column of width 960px. Within this layout there is a central element, that I wish to slide right, on click of a "next" button, and at the same time, another element of the same class slides in from the left to occupy the space vacated. I have drawn a diagram of what I am trying to achieve. In this diagram the red blocks are the element I want to slide in and out, it is grouped by a div which moves left to produce the effect using jQuery I have 2 main questions: How do I get the correct margin values, given that the browser window width can vary and that all elements that are not the current item should be offscreen? 2.If the user were to resize the margins could be dynamically altered based on the values returned using the jQuery resize() event. Or is there a neater quicker better way of doing it using pure CSS?

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• PHP Doxygen Collaboration Diagrams

  - by Shabbyrobe

  I've started playing around with doxygen to generate documentation from my PHP code. I notice there are two diagrams in the generated output - inheritance and collaboration. I know about the inheritance one, but the collaboration one has piqued my interest since reading the manual: If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen will generate a graph for each documented class showing the direct and indirect implementation dependencies (inheritance, containment, and class references variables) of the class with other documented classes. The impression I get from that description is that composition relationships should be represented by the collaboration diagram as well, but it always seems to just be identical to the inheritance one. Is there something I can do to hint to Doxygen the things I would like to appear in this diagram? Does it just not work with PHP?

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• University System Automation, how the internal system of a university works?

  - by Zia ur Rahman

  Hay dear! Suppose we want to make a software , we want to automate the system of university. Suppose a student apply in the university for a certain course, now the question is where the application form of the student will go and what process will be done on this form and then what is the next stage of this form and why it will go to the next stage? Now I hope you have got my point. I need information from the enrollment of a student to its pass out. Or provide a state transition diagram or Data flow diagram. I will be very thankful.

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• Static footer, with attached and scaling overlap

  - by DavidYell

  I have been asked by a client to create a site where the content area overlaps the footer. However they also want the footer to be attached to the bottom of the viewport, which I've done, but it seems that I can't find a good way to vertically stretch the content to maintain the overlap should the browser be resized. I've created a diagram to help explain, http://www.squaresphere.co.uk/images/footer-diagram.png So ideally I need a way of calculating the height of the content and stretching the content div if content_length viewport.height, but keep a min-height if content_length < viewport.height A solution using html+css would be fantastic, but I'm starting to think that I'm going to have to do some funky jQuery onviewportresize or something Any suggestions would be awesome, thanks!

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• UML and Documenting Simple Diagrams

  - by Jason

  As part of a rewrite of an old Java application into C#, I'm writing an actual Software Design Specification. A problem I run into is when a method is too simple to bother with a Sequence Diagram (it doesn't interact with other objects). As an example, I have a simple POJO called Item, containing the following method: public String getCategoryKey() { StringBuffer value = new StringBuffer("s-"); value.append(this.getModelID()); value.append("-c"); return value; } The purpose and the algorithm for the method needs to be documented. However, a sequence diagram is overkill. How would others document it? (I take no credit/blame for the given method, it's very old code and the author "forgot" to put their name in the Javadoc).

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• IE8 positions DIV overlay wrong way and keeps playing video when it's hidden.

  - by George

  Hi! Please take a look at: http://www.binarymark.com/Products/PasswordGenerator/default.aspx (the Overview tab, on the diagram). The issue is wjen you click on any of the diagram elements say "Character Groups" all browsers, except IE8 behave well - that is they display the overlay, start playing a video, and when the overlay is closed, the video stops playing an the div is hidden. IE8, on the other hand has two flaws: it positions the overlay way towards the bottom and too much to the right, and even more annoyingly - it keeps playing video in the background even when the overlay div is closed! I use flowplayer.org/tools/overlay/ for overlay. Can you help please? Thanks.

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• Understanding the concept of Inodes

  - by darkie15

  Hi All, I am referring to the link: http://www.tux4u.nl/freedocs/unix/draw/inode.pdf I am confused on parts: 1 12 direct block pointers 2 1 single indirect block pointer 3 1 double indirect block pointer 4 1 triple indirect block pointer Now the diagram says that each pointer is 32/64 bits. [Query]: Why and how are these values inferred? I mean why specifically have only 32 or 64 bit pointers? The diagram says, One data block{8 KB} for each pointer {4 bytes/8 bytes} [Query]: How does this actually work out? i.e. 8*1024 bytes / 8 bytes = 1024 bytes? What is the logic behind having a 8 bytes pointer for 8KB block? Regards, darkie.

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• Are ASCII diagrams worth my time?

  - by Jesse Stimpson

  Are ASCII diagrams within source code worth the time they take to create? I could create a bitmap diagram much faster, but images are much more difficult to in line in a source file (until VS2010). For the record, I'm not talking about decorative ASCII art. Here's an example of a diagram I recently created for my code that I probably could have constructed in half the time in MS Paint. Scenario A: v (U)_________________(N)_______<--(P) Legend: ' / | J = ... ' / | P = ... ' /d | U = ... ' / | v = ... ' / | d = ... '/ | N = ... (J) | | | |___________________|

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• How to get balanced diagrams from graphviz?

  - by user360872

  Is there a setting in graphviz to generate balanced diagrams like this: When diagram is more complex like below - it isn't balanced like that above (4 is below **). Code to generate second diagram: graph { n1 [label="+"]; n1 -- n2; n2 [label="/"]; n2 -- n3; n3 [label="*"]; n3 -- n4; n4 [label="1"]; n3 -- n5; n5 [label="2"]; n2 -- n6; n6 [label="3"]; n1 -- n7; n7 [label="**"]; n7 -- n8; n8 [label="4"]; n7 -- n9; n9 [label="5"]; }

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• Generating UML diagrams from textual representation

  - by satofish

  How can I generate a UML sequence diagram from a file containing a textual representation of my process, with command-line tools in Linux?

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• Add list type to association

  - by teucer

  Hi All, I am using the eUML2 (Free version) plugin to draw a UML class diagram. Now, let's assume I have a class Person and a class Car. I want the class Person to have a member cars which is a List<Car>, i.e. private List<Car> cars = null. My question is how do I include this information in the class diagram? To be more precise, how do I include the type information for the List in the eUML2 association? Regards

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• CSS float problems, works in IE, doesn't work in Chrome/FF.. I'm probably doing something wrong

  - by user1003916

  I'm not terribly well-versed in CSS.. and don't know all of the major quirks yet. Maybe someone can help me. I've set up an image showing my code, a diagram of my DIVs, and examples of how it looks in IE versus Chrome/FF Can someone direct me to the proper way to go about this? It works fine in IE, but in Chrome and FF, one of the images is escaping its container, and the "content block" as I call it is going underneath the image it's supposed to be next to. Each of the components has a css class despite my diagram saying there's no css.. currently there's just some basic styling for those (padding, text-indent, etc). Thank you

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• CodeDom : compile partial class

  - by James

  I'm attempting to compile code in a text file to change a value in a TextBox on the main form of a WinForms application. Ie. add another partial class with method to the calling form. The form has one button (button1) and one TextBox (textBox1). The code in the text file is: this.textBox1.Text = "Hello World!!"; And the code: namespace WinFormCodeCompile { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { // Load code from file StreamReader sReader = new StreamReader(@"Code.txt"); string input = sReader.ReadToEnd(); sReader.Close(); // Code literal string code = @"using System; using System.Windows.Forms; namespace WinFormCodeCompile { public partial class Form1 : Form { public void UpdateText() {" + input + @" } } }"; // Compile code CSharpCodeProvider cProv = new CSharpCodeProvider(); CompilerParameters cParams = new CompilerParameters(); cParams.ReferencedAssemblies.Add("mscorlib.dll"); cParams.ReferencedAssemblies.Add("System.dll"); cParams.ReferencedAssemblies.Add("System.Windows.Forms.dll"); cParams.GenerateExecutable = false; cParams.GenerateInMemory = true; CompilerResults cResults = cProv.CompileAssemblyFromSource(cParams, code); // Check for errors if (cResults.Errors.Count != 0) { foreach (var er in cResults.Errors) { MessageBox.Show(er.ToString()); } } else { // Attempt to execute method. object obj = cResults.CompiledAssembly.CreateInstance("WinFormCodeCompile.Form1"); Type t = obj.GetType(); t.InvokeMember("UpdateText", BindingFlags.InvokeMethod, null, obj, null); } } } } When I compile the code, the CompilerResults returns an error that says WinFormCodeCompile.Form1 does not contain a definition for textBox1. Is there a way to dynamically create another partial class file to the calling assembly and execute that code? I assume I'm missing something really simple here.

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• can load data(google app enngine) from http://localhost:8100/remote_api ..

  - by zjm1126

  i can download data from gae (http://zjm1126.appspot.com/remote_api), this is code: appcfg.py download_data --application=zjm1126 --url=http://zjm1126.appspot.com/remote_api --filename=a.csv and it successful : D:\zjm_demo\app>appcfg.py download_data --application=zjm1126 --url=http://zjm1 126.appspot.com/remote_api --filename=a.csv Downloading data records. [INFO ] Logging to bulkloader-log-20100618.162421 [INFO ] Throttling transfers: [INFO ] Bandwidth: 250000 bytes/second [INFO ] HTTP connections: 8/second [INFO ] Entities inserted/fetched/modified: 20/second [INFO ] Batch Size: 10 [INFO ] Opening database: bulkloader-progress-20100618.162421.sql3 [INFO ] Opening database: bulkloader-results-20100618.162421.sql3 [INFO ] Connecting to zjm1126.appspot.com/remote_api Please enter login credentials for zjm1126.appspot.com Email: [email protected] Password for [email protected]: [INFO ] Downloading kinds: [u'LogText', u'Greeting', u'Forum', u'Thread'] .... [INFO ] Have 0 entities, 0 previously transferred [INFO ] 0 entities (8804 bytes) transferred in 11.3 seconds so i want to know can load data from 127.0.0.1 , this is my code : appcfg.py download_data --application=zjm1126 --url=http://localhost:8100/remote_api --filename=a.csv and the error is : D:\zjm_demo\app>appcfg.py download_data --application=zjm1126 --url=http://loca lhost:8100/remote_api --filename=a.csv Downloading data records. [INFO ] Logging to bulkloader-log-20100618.162325 [INFO ] Throttling transfers: [INFO ] Bandwidth: 250000 bytes/second [INFO ] HTTP connections: 8/second [INFO ] Entities inserted/fetched/modified: 20/second [INFO ] Batch Size: 10 [INFO ] Opening database: bulkloader-progress-20100618.162325.sql3 [INFO ] Opening database: bulkloader-results-20100618.162325.sql3 Please enter login credentials for localhost Email: [email protected] Password for [email protected]: [INFO ] Connecting to localhost:8100/remote_api [ERROR ] Exception during authentication Traceback (most recent call last): File "d:\Program Files\Google\google_appengine\google\appengine\tools\bulkload er.py", line 3169, in Run self.request_manager.Authenticate() File "d:\Program Files\Google\google_appengine\google\appengine\tools\bulkload er.py", line 1178, in Authenticate remote_api_stub.MaybeInvokeAuthentication() File "d:\Program Files\Google\google_appengine\google\appengine\ext\remote_api \remote_api_stub.py", line 542, in MaybeInvokeAuthentication datastore_stub._server.Send(datastore_stub._path, payload=None) File "d:\Program Files\Google\google_appengine\google\appengine\tools\appengin e_rpc.py", line 346, in Send f = self.opener.open(req) File "D:\Python25\lib\urllib2.py", line 387, in open response = meth(req, response) File "D:\Python25\lib\urllib2.py", line 498, in http_response 'http', request, response, code, msg, hdrs) File "D:\Python25\lib\urllib2.py", line 425, in error return self._call_chain(*args) File "D:\Python25\lib\urllib2.py", line 360, in _call_chain result = func(*args) File "D:\Python25\lib\urllib2.py", line 506, in http_error_default raise HTTPError(req.get_full_url(), code, msg, hdrs, fp) HTTPError: HTTP Error 404: Not Found [INFO ] Authentication Failed so what should i do , thanks

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• Translating PHP language file

  - by Cudos

  Hello. I have a language file like this: <?php $lng_imagepath = "images/"; $lng_imageext = "gif"; $lng_characset = "iso-8859-1"; $lng_prefix = "en_"; $lng_tabhome = "Home"; $lng_tabmyavenue = "My Profile"; $lng_tabregister = "Register"; $lng_tabhelp = "Help"; $lng_tabbuybids = "Buy Bids"; ?> When I convert into a .html file and run Google translate it looks like this: Glemt brugernavn eller adgangskode? "; $ lng_invaliddata =" Ugyldig brugernavn og password. "$ lng_accountsuspend =" Din konto er suspenderet af vindetbud.dk. "$ lng_accountdelete =" Din konto er blevet slettet af vindetbud.dk. "$ lng_enterdata = "Angiv brugernavn og adgangskode." $ lng_enterpassword = "Angiv adgangskoden." / / slut login side variabel / / Language variabler for registrering side $ lng_frregistration = "Gratis registrering"; $ lng_vouchermessage = "voucher, indløses mod første auktion du vinder "; $ lng_amazingproducts =" Chancen for at vinde fantastiske produkter til fantastiske priser "; $ lng_registrationdata =" Du kan tilmelde med vindetbud.dk, bedes du udfylde følgende "; $ lng_personalinfo =" Personlige oplysninger "; $ lng_firstname =" Første Name "; $ lng_lastname =" Efternavn "; $ lng_birthdate =" Fødselsdato "; Do you have any clever ideas how to translate the file? P.S. I know that grammar won't be perfect, but it would help alot to use google translate.

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