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  • Security and authentication in web services

    - by King
    Lets say we have a website that uses a web service for all of its functionality (i.e. retrieving and updating data from/to db), how does the web service authenticate requests? As I understand it, in a traditional java "website" a user provides a username & password, and upon validation a jsessionid is assigned to the user (client browser). Every time the client browser asks the website for something, the site checks for the jsessionid ensuring that the user is registered and authenticated. Is there a web services equivalent of this? If yes, what?

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  • Runtime-error in wpf with Window.AllowsTransparent set to true.

    - by Alxandr
    I get an exception thrown at runtime when I set AllowsTransparent="True" I get an exception saying the WindowStyle can not be set to None if AllowsTransparent is set to true. Even if I explicitly say that WindowStyle is set to SingleBorder I get this error. However, if I set WindowStyle to SingleBorder and remove the AllowsTransparent-tag, I get no error, and the top of the window (the icon, name and close, minimize and maximize-buttons) disappears. Anyone knows what can cause this? Or is it just a bug in .Net 4.0 rc?

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  • How to encrypt/decrypt multiple strings in AES encryption??

    - by sebby_zml
    hello again everyone, i would like to know if i could encrypt two or more strings in AES encryption. let say, i want to encrypt username, password and nonce_value, can i use the following code? try{ String codeWord = username, password, nonceInString; String encryptedData = aseEncryptDecrypt.encrypt(codeWord); String decryptedData = aseEncryptDecrypt.decrypt(encryptedData); System.out.println("Encrypted : " + encryptedData); System.out.println("Decrypted : " + decryptedData); }catch (Throwable e) { // TODO Auto-generated catch block e.printStackTrace(); } thanks in advance. your suggestions and guidance will be very helpful for me.

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  • Couchdb conflict resolution

    - by Sundar
    How does CouchDB handles conflicts while doing bi-directional replication? For example: Lets say there are two address book databases (in server A and B). There is a document for Jack which contains contact details of Jack. Server A and B are replicated and both have the same version of Jack document. In server A, Jack's mobile no is updated. In server B, Jack's address is updated. Now when we do bi-directional replication there is a conflict. How does couchDB handles it? If we initiate replication in a Java program, is there a way to know whether there were any conflicts from the java program?

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  • "port forwarding": redirect calls to webservice at port 8081 to port 80

    - by niba
    Hi, a colleague of mine wrote a webservice that runs on port 8081 of our Windows 2008 Server. He uses the class ServiceHost, afaik this means its a standalone host (no IIS or ASP involvement). Note: I'm new into WCF ;) Now there are some issues with clients behind a firewall blocking the requests to remote port 8081 of our server (where the webservice runs). The easiest solution would be: run the webservice host at port 80 ... But: there is also a Apache 2.2 webserver running on the Windows Server, hosting some websites. By default it runs on port 80. My solution after some researching: use a virtual host to route requests to a virtual host (lets say http://webservice.[hostname]:80) to the webservice host (http://[hostname]:8081). Is this a good idea? Can Apache handle forwards to standalone webservice hosts? It would be nice if someone could lead me on to the right track :) Best regards, Niels

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  • operator for enums

    - by Veer
    Hi all, Just out of curiosity, asking this Like the expression one below a = (condition) ? x : y; // two outputs why can't we have an operator for enums? say, myValue = f ??? fnApple() : fnMango() : fnOrange(); // no. of outputs specified in the enum definition instead of switch statements (eventhough refractoring is possible) enum Fruit { apple, mango, orange }; Fruit f = Fruit.apple; Or is it some kind of useless operator?

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  • What are modern and old compilers written in?

    - by ulum
    As a compiler, other than an interpreter, only needs to translate the input and not run it the performance of itself should be not that problematic as with an interpreter. Therefore, you wouldn't write an interpreter in, let's say Ruby or PHP because it would be far too slow. However, what about compilers? If you would write a compiler in a scripting language maybe even featuring rapid development you could possibly cut the source code and initial development time by halv, at least I think so. To be sure: With scripting language I mean interpreted languages having typical features that make programming faster, easier and more enjoyable for the programmer, usually at least. Examples: PHP, Ruby, Python, maybe JavaScript though that may be an odd choice for a compiler What are compilers normally written in? As I suppose you will respond with something low-level like C, C++ or even Assembler, why? Are there compilers written in scripting languages? What are the (dis)advantages of using low or high level programming languages for compiler writing?

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  • Merging/filling pdf form file with xml data

    - by Giorgi
    Hello, Let's say I have a pdf form file available at website which is filled by the users and submitted to the server. On the server side (Asp.Net) I would like to merge the data that I receive in xml format with the empty pdf form that was filled and save it. As I have found there are several possible ways of doing it: Using pdf form created by adobe acrobat and filling it with itextsharp. Using pdf form created by adobe acrobat and filling it with FDF Toolkit .net (which seems to be using itextsharp internally) Usd pdfkt to fill the form. Use pdf form file created with adobe livecycle and merge the data by using Form Data Integration Service As I have no experience with this kind of task can you advise which option would be better/easier and give some additional tips? Thank you in advance.

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  • Text to MP3 using System.Speech.Synthesis.SpeechSynthesizer

    - by Rob
    I am trying to get a text-to-speech to save to an MP3. Currently I have the System.Speech.Synthesis speaking to a WAV file nicely. With New System.Speech.Synthesis.SpeechSynthesizer '.SetOutputToWaveFile(pOutputPath) This works fine .SetOutputToWaveStream(<<Problem bit>>) .Speak(pTextToSpeak) .SetOutputToNull() .Dispose() End With Now the first line commented out produces a WAV file which is nice. Currently I am trying to replace that with an MP3 output stream and not having much success. I have tried the Yeti.MMedia converter but either it isn't going to work or I haven't got it to work successfully. I have to admit here I don't know much about encodings, speeds etc. So the question I have is, does anyone know of a nice way I can say something like the following: .SetOutputToWaveStream(New MP3WriteStream(pOutputPath)) and have the SpeechSynthesizer write to the WAV which then gets converted to the MP3 and ends up on the HDD.

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  • how many fps can iPhone's UIGetScreenImage() actually do?

    - by M Katz
    Now that Apple is officially allowing UIGetScreenImage() to be used in iPhone apps, I've seen a number of blogs saying that this "opens the floodgates" for video capture on iPhones, including older models. But I've also seen blogs that say the fastest frame rate they can get with UIGetScreenImage() is like 6 FPS. Can anyone share specific frame-rate results you've gotten with UIGetScreenImage() (or other approved APIs)? Does restricting the area of the screen captured improve frame rate significantly? Also, for the wishful thinking segment of today's program, does anyone have pointers to code/library that uses UIGetScreenImage() to capture video? For instance, I'd like an API something like Capture( int fps, Rect bounds, int durationMs ) that would turn on the camera and for the given duration record a sequence of .png files at the given frame rate, copying from the given screen rect.

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  • PropertyGrid: Merging multiple dynamic properties when editing multiple objects

    - by Andrei Stanescu
    Hi, Let's say I have a class A and a class B. I would like to edit using .NET PropertyGrid multiple instances of A and B simultaneously. The desired behavior would be to have the intersection of properties displayed. If A and B have static (written in the source code) properties everything works fine. Selecting A and B instances will only display the intersection of properties. However, if A and B also have dynamic properties (returned as a PropertyDescriptorCollection through the GetProperties() method) the behavior is wrong. When selecting multiple objects I will only see those static properties and none of the dynamic ones. When I select only one instance I can see all properties (static and dynamic). Anybody any ideas? I couldn't find anything on the internet.

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  • SelectedIndexChanged for programmatically created dropdownlist in ASP.NET fires multiple times.

    - by Achilles
    Consider the following: dim dropdownlist1 as new dropdownlist dim dropdownlist2 as new dropdownlist dim dropdownlist3 as new dropdownlist dropdownlist1.AutoPostBack = true dropdownlist2.AutoPostBack = true dropdownlist3.AutoPostBack = true AddHandler dropdownlist1.SelectedIndexChanged, AddressOf SomeEvent AddHandler dropdownlist2.SelectedIndexChanged, AddressOf SomeEvent AddHandler dropdownlist3.SelectedIndexChanged, AddressOf SomeEvent The SomeEvent fires as expected when any of the dropdown's selection is changed. However if say DropdownList2 has a selection made then I make a selection with either DropDownList1 or DropdownList3, then SomeEvent fires again. What is causing this behavior and how do I get just a single raising of that event? I suspect that when the viewstate for the dynamcially created dropdownlists is restored and the selection restored, then the event is fired because technically the selected index did change when the control was recreated. The reason I suspect this is that the event fires the for each dropdownlist...

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  • Populate a combo box with one data tabel and save the choice in another.

    - by Scott Chamberlain
    I have two data tables in a data set for example lets say Servers: | Server | Ip | Users: | Username | Password | Server | and there is a foreign key on users that points to servers. How do I make a combo box that list all of the servers. Then how do I make the selected server in that combo box be saved in the data set in the Server column of the users table. EDIT -- I havent tested it yet but is this the right way? this.bsServers.DataMember = "Servers"; this.bsServers.DataSource = this.dataSet; this.bsUsers.DataMember = "FK_Users_Servers"; this.bsUsers.DataSource = this.bsServers; this.serverComboBox.DataBindings.Add(new System.Windows.Forms.Binding("SelectedValue", this.bsUsers, "Server", true)); this.serverComboBox.DataSource = this.bsServers; this.serverComboBox.DisplayMember = "Server"; this.serverComboBox.ValueMember = "Server";

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  • ASP.NET HttpContext.GetLocalResourceObject() throws InvalidOperationException

    - by Dylan Lin
    Hi all, Let's say we have such site structure: App_LocalResources       |- A.aspx.resx       |- B.aspx.resx A.aspx B.aspx Now I use HttpContext.GetLocalResourceObject("~/A.aspx") in A.aspx.cs, and it works fine. But if I use HttpContext.GetLocalResourceObject("~/A.aspx") in B.aspx.cs, it throws an exception: The resource class for this page was not found. Please check if the resource file exists and try again. Exception Details: System.InvalidOperationException: The resource class for this page was not found. Please check if the resource file exists and try again. How can I resolve this problem? I want to read the local resources from an external page, and I don't want to read the .resx file myself. Thanks :-)

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  • Select row After UIPickerView is loaded

    - by Steve Gibson
    I have an iphone database app that loads a UIPickerView with data from a table. I want to set the selected row to a particular row from the data in another table. for example: Lets say I have a UIPickerView that is loaded with X number of names of the iPhone users friends (the number of names is variable, could be 1 or 1000 and all are entered into the DB by the user). The iPhone user has a preference set that their current best friend is TED. I want the UIPickerView to be position to TED when displayed. Where do I call selectRow? I tried in viewDidAppear but it was never called, in titleForRow which caused all kinds of strange behavior. viewDidLoad and viewWillAppear are out of the question because I don't know what's in the datasource to the picker yet. Thanks in advance.

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  • How do I copy a JavaScript object into another object?

    - by Josh K
    Say I want to start with a blank JavaScript object: me = {}; And then I have an array: me_arr = new Array(); me_arr['name'] = "Josh K"; me_arr['firstname'] = "Josh"; Now I want to throw that array into the object so I can use me.name to return Josh K. I tried: for(var i in me_arr) { me.i = me_arr[i]; } But this didn't have the desired result. Is this possible? My main goal is to wrap this array in a JavaScript object so I can pass it to a PHP script (via AJAX or whatever) as JSON.

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  • JPA entities -- org.hibernate.TypeMismatchException

    - by shane lee
    Environment: JDK 1.6, JEE5 Hibernate Core 3.3.1.GA, Hibernate Annotations 3.4.0.GA DB:Informix Used reverse engineering to create my persistence entities from db schema [NB:This is a schema in work i cannot change] Getting exception when selecting list of basic_auth_accounts org.hibernate.TypeMismatchException: Provided id of the wrong type for class ebusiness.weblogic.model.UserAccounts. Expected: class ebusiness.weblogic.model.UserAccountsId, got class ebusiness.weblogic.model.BasicAuthAccountsId Both basic_auth_accounts and user_accounts have composite primary keys and one-to-one relationships. Any clues what to do here? This is pretty important that i get this to work. Cannot find any substantial solution on the net, some say to create an ID class which hibernate has done, and some say not to have a one-to-one relationship. Please help me!! /** * BasicAuthAccounts generated by hbm2java */ @Entity @Table(name = "basic_auth_accounts", schema = "ebusdevt", catalog = "ebusiness_dev", uniqueConstraints = @UniqueConstraint(columnNames = { "realm_type_id", "realm_qualifier", "account_name" })) public class BasicAuthAccounts implements java.io.Serializable { private BasicAuthAccountsId id; private UserAccounts userAccounts; private String accountName; private String hashedPassword; private boolean passwdChangeReqd; private String hashMethodId; private int failedAttemptNo; private Date failedAttemptDate; private Date lastAccess; public BasicAuthAccounts() { } public BasicAuthAccounts(UserAccounts userAccounts, String accountName, String hashedPassword, boolean passwdChangeReqd, String hashMethodId, int failedAttemptNo) { this.userAccounts = userAccounts; this.accountName = accountName; this.hashedPassword = hashedPassword; this.passwdChangeReqd = passwdChangeReqd; this.hashMethodId = hashMethodId; this.failedAttemptNo = failedAttemptNo; } public BasicAuthAccounts(UserAccounts userAccounts, String accountName, String hashedPassword, boolean passwdChangeReqd, String hashMethodId, int failedAttemptNo, Date failedAttemptDate, Date lastAccess) { this.userAccounts = userAccounts; this.accountName = accountName; this.hashedPassword = hashedPassword; this.passwdChangeReqd = passwdChangeReqd; this.hashMethodId = hashMethodId; this.failedAttemptNo = failedAttemptNo; this.failedAttemptDate = failedAttemptDate; this.lastAccess = lastAccess; } @EmbeddedId @AttributeOverrides( { @AttributeOverride(name = "realmTypeId", column = @Column(name = "realm_type_id", nullable = false, length = 32)), @AttributeOverride(name = "realmQualifier", column = @Column(name = "realm_qualifier", nullable = false, length = 32)), @AttributeOverride(name = "accountId", column = @Column(name = "account_id", nullable = false)) }) public BasicAuthAccountsId getId() { return this.id; } public void setId(BasicAuthAccountsId id) { this.id = id; } @OneToOne(fetch = FetchType.LAZY) @PrimaryKeyJoinColumn @NotNull public UserAccounts getUserAccounts() { return this.userAccounts; } public void setUserAccounts(UserAccounts userAccounts) { this.userAccounts = userAccounts; } /** * BasicAuthAccountsId generated by hbm2java */ @Embeddable public class BasicAuthAccountsId implements java.io.Serializable { private String realmTypeId; private String realmQualifier; private long accountId; public BasicAuthAccountsId() { } public BasicAuthAccountsId(String realmTypeId, String realmQualifier, long accountId) { this.realmTypeId = realmTypeId; this.realmQualifier = realmQualifier; this.accountId = accountId; } /** * UserAccounts generated by hbm2java */ @Entity @Table(name = "user_accounts", schema = "ebusdevt", catalog = "ebusiness_dev") public class UserAccounts implements java.io.Serializable { private UserAccountsId id; private Realms realms; private UserDetails userDetails; private Integer accessLevel; private String status; private boolean isEdge; private String role; private boolean chargesAccess; private Date createdTimestamp; private Date lastStatusChangeTimestamp; private BasicAuthAccounts basicAuthAccounts; private Set<Sessions> sessionses = new HashSet<Sessions>(0); private Set<AccountGroups> accountGroupses = new HashSet<AccountGroups>(0); private Set<UserPrivileges> userPrivilegeses = new HashSet<UserPrivileges>(0); public UserAccounts() { } public UserAccounts(UserAccountsId id, Realms realms, UserDetails userDetails, String status, boolean isEdge, boolean chargesAccess) { this.id = id; this.realms = realms; this.userDetails = userDetails; this.status = status; this.isEdge = isEdge; this.chargesAccess = chargesAccess; } @EmbeddedId @AttributeOverrides( { @AttributeOverride(name = "realmTypeId", column = @Column(name = "realm_type_id", nullable = false, length = 32)), @AttributeOverride(name = "realmQualifier", column = @Column(name = "realm_qualifier", nullable = false, length = 32)), @AttributeOverride(name = "accountId", column = @Column(name = "account_id", nullable = false)) }) @NotNull public UserAccountsId getId() { return this.id; } public void setId(UserAccountsId id) { this.id = id; } @OneToOne(fetch = FetchType.LAZY, mappedBy = "userAccounts") public BasicAuthAccounts getBasicAuthAccounts() { return this.basicAuthAccounts; } public void setBasicAuthAccounts(BasicAuthAccounts basicAuthAccounts) { this.basicAuthAccounts = basicAuthAccounts; } /** * UserAccountsId generated by hbm2java */ @Embeddable public class UserAccountsId implements java.io.Serializable { private String realmTypeId; private String realmQualifier; private long accountId; public UserAccountsId() { } public UserAccountsId(String realmTypeId, String realmQualifier, long accountId) { this.realmTypeId = realmTypeId; this.realmQualifier = realmQualifier; this.accountId = accountId; } @Column(name = "realm_type_id", nullable = false, length = 32) @NotNull @Length(max = 32) public String getRealmTypeId() { return this.realmTypeId; } public void setRealmTypeId(String realmTypeId) { this.realmTypeId = realmTypeId; } @Column(name = "realm_qualifier", nullable = false, length = 32) @NotNull @Length(max = 32) public String getRealmQualifier() { return this.realmQualifier; } public void setRealmQualifier(String realmQualifier) { this.realmQualifier = realmQualifier; } @Column(name = "account_id", nullable = false) public long getAccountId() { return this.accountId; } public void setAccountId(long accountId) { this.accountId = accountId; } Main Code for classes are:

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  • Simplest language to make an interpreter for

    - by None
    I want to make an interpreter of a very simple language for practice. When I say simple I don't mean easy to use, I mean simple. Brainf**k is a good example of a language I want. I already have made a brainf**k interpreter in python (which is the language I would be using to write the interpreter). I would appreciate any suggestions of simple languages. Note: I don't want to make a compiler! I want to make an interpreter.

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  • 24 hours per day and freelance programming jobs

    - by Luca
    I'm working on stimulanting projects at my job. I like it. I like programming! I have accumulated several years of experience now. Sometime happens I develop other projects (even more stimulant of my main job). Some more money cannot hurts! The problem is that my free time has decreased a lot, leading me to develop until late evening. I usually program each day (I like to develop my own projects, even if only a few lines at a time). But it is one thing to plan for my pleasure, it is one thing to plan for business. So, my question is how to balance free time with these additional jobs? What experiences do you have? How much you can develop for long time (in a medium interval, say, weeks)? Every thought is welcome!

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  • MPI_SCATTER Fortran Matrices by Rows

    - by Fortran
    What is the best way to scatter a Fortran 90 matrix by its rows rather than columns? That is, let's say I have a matrix a(4,50) and I want to MPI_SCATTER it onto two processes where each part is alocal(2,50), where rank 0 has rows 1 and 2, and rank 1 has 3 and 4. Now, in C, this is simple since arrays are row-major, but in Fortran 90 they are column-major. I'm trying to avoid using TRANSPOSE to flip a before scattering (i.e, doubling the memory use), and I figure there must be a way in MPI to do this. Would it be MPI_TYPE_VECTOR? MPI_TYPE_CREATE_SUBARRAY? Likewise, what if I have a 3d array b(4,50,3) and I want two scattered matrices of blocal(2,50,3) distributed as above?

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  • Querying for names

    - by Sai
    I have a table (say "Demographics") on SQL Server. In this table are the following columns "LastName", "FirstName", "MiddleName", "Prefix" , "Suffix". I have one textbox to search for them on a webpage. My question: Whats a good design strategy for queries where the user could be searching for various combinations of names including last names that have spaces e.g. "Smith James Jr." . Our customers store Jr. sometimes in suffix and sometimes just tack it to lastname. Sometimes Smith James Jr could be the entire last name.

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  • UINavigationController back button half works in iPad landscape orientation

    - by drawnonward
    In an iPad application with a UINavigationController, everything works in portrait mode but in landscape mode the back button sometimes only goes back half a level. That is to say, on the first press the title bar animates as if it was popping a controller, and on the second press it animates the content popping. Has anyone found a solution to this? The contradictory solution in this question did not help. I have a shouldAutorotate method in the navigation controller but no others. -(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)inOrientation { return YES; }

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  • Marquee Text When Text Overflows

    - by Mike Stanford
    Hi all, well heres my problem. Lets say i have 3 div tags, all are 100pixels wide: <--- DIV WIDTH ---> Text in div 1 Text in div two, it overflows Text in div three <--- DIV WIDTH ---> Now, currently i have this css for the divs: width:100px; overflow:hidden; What i want to do is if the text overflows, it scrolls like a marquee so all the text can be seen if you wait a little bit. But i only want the marquee to show if the text overflows. How would i do this? Thx, Tony

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  • CHMOD To Prevent Deletion Of File Directory

    - by Sohnee
    I have some hosting on a Linux server and I have a few folders that I don't ever want to delete. There are sub folders within these that I do want to delete. How do I set the CHMOD permissions on the folders I don't want to delete? Of course, when I say "I don't ever want to delete" - what I mean is that the end customer shouldn't delete them by accident, via FTP or in a PHP script etc. As an example of directory structure... MainFolder/SubFolder MainFolder/Another I don't want "MainFolder" to be accidentally deleted, but I'm happy for "SubFolder" and "Another" to be removed!

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  • PDO::fetchAll vs. PDO::fetch in a loop

    - by Byron
    Just a quick question. Is there any performance difference between using PDO::fetchAll() and PDO::fetch() in a loop (for large result sets)? I'm fetching into objects of a user-defined class, if that makes any difference. My initial uneducated assumption was that fetchAll might be faster because PDO can perform multiple operations in one statement while mysql_query can only execute one. However I have little knowledge of PDO's inner workings and the documentation doesn't say anything about this, and whether or not fetchAll() is simply a PHP-side loop dumped into an array. Any help?

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