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• CakePHP 2.0: how to access properties of the parent object?

  - by PaulJ

  I just started learning CakePHP 2.0 a few days ago, and there's one thing that is leaving me stumped: say I have an User model and a Posts model: class User extends AppModel { public $name = "User"; public $hasMany=array( 'Post' => array( 'className' => 'Post', 'foreignKey' => 'author_id' ) ); } class Post extends AppModel { public $name = 'Post'; public $belongsTo = array( 'className' = 'User', 'foreignKey' = 'author_id', ); } (Where "author_id" is the foreign key in the posts table that references the Users table's primary key). And now, in the PostsController, I want to access the properties of the user that owns the current post (to show his display name, for example). What would be the proper syntax? I tried: $this->Post->User->find('first', array('conditions' => array('User.id' => "$usuario"))) But it didn't work (I guess it's because the User is the parent of the Post object, not its child). Or should CakePHP load everything automatically, once you've declared the $hasMany and $belongsTo relationships?

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• How to display in a form the next object of a collection?

  - by user359706

  I have a list of objects produced. after click on next I want to display the next product in the form my products list: Private List listProduct; listProduits = new List<Product>(); Product objProduit_1 = new Produit; objProduct_1.ref = "001"; objProduct_1.article = "G900"; objProduct_1.quantity = 30; listProducts.Add(objProduct_1); ProductobjProduit_2 = new Product; objProduct_2.ref = "002"; objProduct_2.article = "G900"; objProduct_2.quantity = 35; listProduits.Add(objProduct_2); in my asp page I have the following form: <form id="formNF" runat="server"> <asp:TextBox ID="txtRef" runat="server"></asp:TextBox> <asp:TextBox ID="txtArticle" runat="server"></asp:TextBox> <asp:TextBox ID="txtQauntity" runat="server"></asp:TextBox> <asp:Button ID="ButtonNext" runat="server" Text="Next product" OnClick="ButtonNext_Click"/> </form> In my code-behind: protected void ButtonNext_Click(object sender, EventArgs e) { // I do not know how to retrieve the following product // How to stop and continue after click on next button? foreach (Product prd in listProduct){ txtRef.Text = prd.ref; txtRef.Text = prd.article; txtRef.Text = prd.quantity; } } Thank you in advance.

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• EF code first error "The specified index already exists. [ IX_Id ]" for object tree

  - by PascalN

  Using EF code first 4.3 I'm trying to model an object tree with a required-required relationships and a required-optional relationships. Here is a simple representation of those classes public class Top { public int Id { get; set; } public virtual Middle Middle { get; set; } } public class Middle { public int Id { get; set; } public virtual Child Child { get; set; } } public class Child { public int Id { get; set; } } Here is the OnModelCreating code modelBuilder.Entity<Top>().HasRequired(t => t.Middle).WithRequiredPrincipal().WillCascadeOnDelete(); modelBuilder.Entity<Middle>().HasRequired(t => t.Child).WithOptional().WillCascadeOnDelete(); This produces the error "The specified index already exists. [ IX_Id ]" on SQLCE After checking the db schema, both model binder fluent API configuration lines create an index IX_Id on the table Middles. Does anyone know how to work around that problem? Is there a way to set the index name? Thank you! Pascal

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• What's wrong (or right) with this JS Object Pattern?

  - by unsane1

  Here's an example of the pattern I'm using in my javascript objects these days (this example relies on jQuery). http://pastie.org/private/ryn0m1gnjsxdos9onsyxg It works for me reasonably well, but I'm guessing there's something wrong, or at least sub-optimal about it, I'm just curious to get people's opinions. Here's a smaller, inline example of it: sample = function(attach) { // set internal reference to self var self = this; // public variable(s) self.iAmPublic = true; // private variable(s) var debug = false; var host = attach; var pane = { element: false, display: false } // public function(s) self.show = function() { if (!pane.display) { position(); $(pane.element).show('fast'); pane.display = true; } } self.hide = function() { if (pane.display) { $(pane.element).hide('fast'); pane.display = false; } } // private function(s) function init () { // do whatever stuff is needed on instantiation of this object // like perhaps positioning a hidden div pane.element = document.createElement('div'); return self; } function position() { var h = { 'h': $(host).outerHeight(), 'w': $(host).outerWidth(), 'pos': $(host).offset() }; var p = { 'w': $(pane.element).outerWidth() }; $(pane.element).css({ top: h.pos.top + (h.h-1), left: h.pos.left + ((h.w - p.w) / 2) }); } function log () { if (debug) { console.log(arguments); } } // on-instantiation let's set ourselves up return init(); } I'm really curious to get people's thoughts on this.

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• Why can't I display same object in multiple viewports?

  - by user288973

  Hi, I'm pretty new to OpenGL. Was playing around with some code but can't figure out why the following will not produce two viewports with the same object view. Heres the code: glViewport(0, windowHeight/2, windowWidth/2, windowHeight); glScissor(0, windowHeight/2, windowWidth/2, windowHeight); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective( 45.0, (GLfloat)(windowWidth/2)/(GLfloat)(windowHeight/2), 0.1f, 500.0 ); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); drawParticleView(); glViewport(windowWidth/2, 0, windowWidth, windowHeight/2); glScissor(windowWidth/2, 0, windowWidth, windowHeight/2); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective( 45.0, (GLfloat)(windowWidth/2)/(GLfloat)(windowHeight/2), 0.1f, 500.0 ); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); drawParticleView(); drawParticleView() just draws an array of rectangles. The problem is that the second viewport is a squashed representation of the first. My window width is 1280 and height 960. I'm obviously doing something wrong but what? Thanks

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• Doing a global count of an object type (like Users), best practice?

  - by user246114

  Hi, I know keeping global counters is frowned upon in app engine. I am interested in getting some stats though, like once every 24 hours. For example, I'd like to count the number of User objects in the system once every 24 hours. So how do we do this? Do we simply keep a set of admin tool functions which do something like: SELECT FROM com.me.project.server.User; and just see what the size of the returned List is? This is kind of a bummer because the datastore would have to deserialize every single User instance to create the returned list, right? I could optimize this possibly by asking for only the keys to be returned, so the whole User object doesn't have to be deserialized. Then again, a global counter for # of users probably would create too much contention, because there probably won't be hundreds of signups a minute for the service I'm creating. How should we go about doing this? Getting my total number of users once a day is probably a pretty typical operation? Thank you

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• How to break an object into chunks based on some property?

  - by CurlyFro

  public class InvestorMailing { public string To { get; set; } public IEnumerable<string> Attachments { get; set; } public int AttachmentCount { get; set; } public long AttachmentSize { get; set; } } i have an IList<InvestorMailing> mailingList. if the attachment size is greater than x, then i need to split my object into chunks. is there an easy linq-y way to do this? Edited: this is how i'm generating my mailings: var groupedMailings = mailingList.GroupBy(g => g.GroupBy); var investorMailings = groupedMailings.Select( g => new DistinctInvestorMailing { Id = g.Select(x => x.Id).FirstOrDefault(), To = g.Key.Trim(), From = g.Select(x => x.From).FirstOrDefault(), FromName = g.Select(x => x.FromName).FirstOrDefault(), Bcc = g.Select(x => x.Bcc).FirstOrDefault(), DeliveryCode = g.Select(x => x.DeliveryCode).FirstOrDefault(), Subject = g.Select(x => x.Subject).FirstOrDefault(), Body = g.Select(x => x.Body).FirstOrDefault(), CommentsOnStatus = g.Select(x => x.CommentsOnStatus).FirstOrDefault(), Attachments = g.Select(x => x.AttachmentPath), AttachmentCount = g.Select(x => x.AttachmentPath).Count(), AttachmentSize = g.Sum(x => x.AttachmentSize), MailType = g.Select(x => x.MessageType).FirstOrDefault() } ).ToList();

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• When my object is no longer referenced why do its events continue to run?

  - by Ryan Peschel

  Say I am making a game and have a base Buff class. I may also have a subclass named ThornsBuff which subscribes to the Player class's Damaged event. The Player may have a list of Buffs and one of them may be the ThornsBuff. For example: Test Class Player player = new Player(); player.ActiveBuffs.Add(new ThornsBuff(player)); ThornsBuff Class public ThornsBuff(Player player) { player.DamageTaken += player_DamageTaken; } private void player_DamageTaken(MessagePlayerDamaged m) { m.Assailant.Stats.Health -= (int)(m.DamageAmount * .25); } This is all to illustrate an example. If I were to remove the buff from the list, the event is not detached. Even though the player no longer has the buff, the event is still executed as if he did. Now, I could have a Dispel method to unregister the event, but that forces the developer to call Dispel in addition to removing the Buff from the list. What if they forget, increased coupling, etc. What I don't understand is why the event doesn't detatch itself automatically when the Buff is removed from the list. The Buff only existed in the list and that is its one reference. After it is removed shouldn't the event be detached? I tried adding the detaching code to the finalizer of the Buff but that didn't fix it either. The event is still running even after it has 0 references. I suppose it is because the garbage collector had not run yet? Is there any way to make it automatic and instant so that when the object has no references all its events are unregisted? Thanks.

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• Why does Java think my object is a variable?

  - by user2896898

  Ok so I'm trying to make a simple pong game. I have a paddle that follows the mouse and a ball that bounces around. I wrote a method collidesWith(Sprite s) inside of my Sprite class that checks if the ball collides with the paddle (this works and isn't the problem). I have two objects extending my sprite class, a ball and a paddle object. So inside of my ball class I'm trying to check if it collides with the paddle. So I've tried if(this.collidesWith(paddle) == true){ System.out.println("They touched"); } I've also tried ball.collidesWith(paddle) and other combinations but it always says the same thing about the paddle (and the ball when I use ball.collidesWith) "Cannot find symbol. Symbol: variable paddle(or ball). Location: class Ball" So if I'm reading this right, it thinks that the paddle (and ball) are variables and it's complaining because it can't find them. How can I make it understand I am passing in objects, not variables? For extra information, an earlier assignment had me make two boxes and for them to change colors when they were colliding. In that assignment I used very similar code to above with if(boxOne.collidesWith(boxTwo) == true){ System.out.println("yes"); } And in this code it worked just fine. The program knew that boxOne and boxTwo were child classes of my Sprite class. Anyone know why they wouldn't work the same?

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• TypeError: Error #1009: Cannot access a property or method of a null object reference. at RECOVER_fyp1_fla::MainTimeline/abc1()

  - by user2643323

  TypeError: Error #1009: Cannot access a property or method of a null object reference. at RECOVER_fyp1_fla::MainTimeline/abc1() Hi, what does this mean? Can anybody figure it out? Thanks. Code: swatter.addEventListener(Event.ENTER_FRAME,abc1); Mouse.hide(); function abc1(e:Event) { swatter.x = mouseX; swatter.y = mouseY; enter code here mosq1.y = mosq1.y + 2; mosq2.y = mosq2.y + 3; mosq3.y = mosq3.y + 4; mosq4.y = mosq4.y + 5; mosq5.y = mosq5.y + 6; if (mosq1.y > 640) { mosq1.y = -50; } if (mosq2.y > 640) { mosq2.y = -50; } if (mosq3.y > 640) { mosq3.y = -50; } if (mosq4.y > 640) { mosq4.y = -50; } if (mosq5.y > 640) { mosq5.y = -50; } if(swatter.hitTestObject(mosq1)) { //SoundMixer.stopAll(); //three_start_sound1.play(); mosq1.parent.removeChild(mosq1); } if(swatter.hitTestObject(mosq2)) { //SoundMixer.stopAll(); //three_start_sound1.play(); mosq2.parent.removeChild(mosq2); } if(swatter.hitTestObject(mosq3)) { //SoundMixer.stopAll(); //three_start_sound1.play(); mosq3.parent.removeChild(mosq3); } if(swatter.hitTestObject(mosq4)) { //SoundMixer.stopAll(); //three_start_sound1.play(); mosq4.parent.removeChild(mosq4); } if(swatter.hitTestObject(mosq5)) { //SoundMixer.stopAll(); //three_start_sound1.play(); mosq5.parent.removeChild(mosq5); } } enter code here

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• RHEL Cluster FAIL after changing time on system

  - by Eugene S

  I've encountered a strange issue. I had to change the time on my Linux RHEL cluster system. I've done it using the following command from the root user: date +%T -s "10:13:13" After doing this, some message appeared relating to <emerg> #1: Quorum Dissolved however I didn't capture it completely. In order to investigate the issue I looked at /var/log/messages and I've discovered the following: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering GATHER state from 0. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Creating commit token because I am the rep. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Storing new sequence id for ring 354 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering COMMIT state. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering RECOVERY state. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] position [0] member 192.168.1.49: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] previous ring seq 848 rep 192.168.1.49 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] aru 61 high delivered 61 received flag 1 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Did not need to originate any messages in recovery. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Sending initial ORF token Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] CLM CONFIGURATION CHANGE Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] New Configuration: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.49) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Left: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.51) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Joined: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CMAN ] quorum lost, blocking activity Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] CLM CONFIGURATION CHANGE Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] New Configuration: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.49) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Left: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Joined: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [SYNC ] This node is within the primary component and will provide service. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering OPERATIONAL state. Mar 22 16:40:42 hsmsc50sfe1a kernel: dlm: closing connection to node 2 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] got nodejoin message 192.168.1.49 Mar 22 16:40:42 hsmsc50sfe1a clurgmgrd[25809]: <emerg> #1: Quorum Dissolved Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CPG ] got joinlist message from node 1 Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Cluster is not quorate. Refusing connection. Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Error while processing connect: Connection refused Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Invalid descriptor specified (-21). Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Someone may be attempting something evil. Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Error while processing disconnect: Invalid request descriptor Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering GATHER state from 9. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Creating commit token because I am the rep. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Storing new sequence id for ring 358 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering COMMIT state. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering RECOVERY state. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] position [0] member 192.168.1.49: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] previous ring seq 852 rep 192.168.1.49 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] aru f high delivered f received flag 1 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] position [1] member 192.168.1.51: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] previous ring seq 852 rep 192.168.1.51 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] aru f high delivered f received flag 1 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Did not need to originate any messages in recovery. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] Sending initial ORF token Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] CLM CONFIGURATION CHANGE Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] New Configuration: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.49) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Left: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Joined: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] CLM CONFIGURATION CHANGE Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] New Configuration: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.49) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.51) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Left: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] Members Joined: Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] #011r(0) ip(192.168.1.51) Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [SYNC ] This node is within the primary component and will provide service. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [TOTEM] entering OPERATIONAL state. Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [MAIN ] Node chb_sfe2a not joined to cman because it has existing state Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] got nodejoin message 192.168.1.49 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CLM ] got nodejoin message 192.168.1.51 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CPG ] got joinlist message from node 1 Mar 22 16:40:42 hsmsc50sfe1a openais[25715]: [CPG ] got joinlist message from node 2 Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Cluster is not quorate. Refusing connection. Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Error while processing connect: Connection refused Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Invalid descriptor specified (-111). Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Someone may be attempting something evil. Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Error while processing get: Invalid request descriptor Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Invalid descriptor specified (-21). Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Someone may be attempting something evil. Mar 22 16:40:42 hsmsc50sfe1a ccsd[25705]: Error while processing disconnect: Invalid request descriptor How could this be related to the time change procedure I performed?

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• Representing game states in Tic Tac Toe

  - by dacman

  The goal of the assignment that I'm currently working on for my Data Structures class is to create a of Quantum Tic Tac Toe with an AI that plays to win. Currently, I'm having a bit of trouble finding the most efficient way to represent states. Overview of current Structure: AbstractGame Has and manages AbstractPlayers (game.nextPlayer() returns next player by int ID) Has and intializes AbstractBoard at the beginning of the game Has a GameTree (Complete if called in initialization, incomplete otherwise) AbstractBoard Has a State, a Dimension, and a Parent Game Is a mediator between Player and State, (Translates States from collections of rows to a Point representation Is a StateConsumer AbstractPlayer Is a State Producer Has a ConcreteEvaluationStrategy to evaluate the current board StateTransveralPool Precomputes possible transversals of "3-states". Stores them in a HashMap, where the Set contains nextStates for a given "3-state" State Contains 3 Sets -- a Set of X-Moves, O-Moves, and the Board Each Integer in the set is a Row. These Integer values can be used to get the next row-state from the StateTransversalPool SO, the principle is Each row can be represented by the binary numbers 000-111, where 0 implies an open space and 1 implies a closed space. So, for an incomplete TTT board: From the Set<Integer> board perspective: X_X R1 might be: 101 OO_ R2 might be: 110 X_X R3 might be: 101, where 1 is an open space, and 0 is a closed space From the Set<Integer> xMoves perspective: X_X R1 might be: 101 OO_ R2 might be: 000 X_X R3 might be: 101, where 1 is an X and 0 is not From the Set<Integer> oMoves perspective: X_X R1 might be: 000 OO_ R2 might be: 110 X_X R3 might be: 000, where 1 is an O and 0 is not Then we see that x{R1,R2,R3} & o{R1,R2,R3} = board{R1,R2,R3} The problem is quickly generating next states for the GameTree. If I have player Max (x) with board{R1,R2,R3}, then getting the next row-states for R1, R2, and R3 is simple.. Set<Integer> R1nextStates = StateTransversalPool.get(R1); The problem is that I have to combine each one of those states with R1 and R2. Is there a better data structure besides Set that I could use? Is there a more efficient approach in general? I've also found Point<-State mediation cumbersome. Is there another approach that I could try there? Thanks! Here is the code for my ConcretePlayer class. It might help explain how players produce new states via moves, using the StateProducer (which might need to become StateFactory or StateBuilder). public class ConcretePlayerGeneric extends AbstractPlayer { @Override public BinaryState makeMove() { // Given a move and the current state, produce a new state Point playerMove = super.strategy.evaluate(this); BinaryState currentState = super.getInGame().getBoard().getState(); return StateProducer.getState(this, playerMove, currentState); } } EDIT: I'm starting with normal TTT and moving to Quantum TTT. Given the framework, it should be as simple as creating several new Concrete classes and tweaking some things.

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• Perl Script to search and replace in .SQL query file with user inputs

  - by T.Mount

  I have a .SQL file containing a large number of queries. They are being run against a database containing data for multiple states over multiple years. The machine I am running this on can only handle running the queries for one state, in one year, at a time. I am trying to create a Perl script that takes user input for the state abbreviation, the state id number, and the year. It then creates a directory for that state and year. Then it opens the "base" .SQL file and searches and replaces the base state id and year with the user input, and saves this new .SQL file to the created directory. The current script I have (below) stops at open(IN,'<$infile') with "Can't open [filename]" It seems that it is having difficulty finding or opening the .SQL file. I have quadruple-checked to make sure the paths are correct, and I have even tried replacing the $path with an absolute path for the base file. If it was having trouble with creating the new file I'd have more direction, but since it can't find/open the base file I do not know how to proceed. #!/usr/local/bin/perl use Cwd; $path = getcwd(); #Cleans up the path $path =~ s/\\/\//sg; #User inputs print "What is the 2 letter state abbreviation for the state? Ex. 'GA'\n"; $stlet = <>; print "What is the 2 digit state abbreviation for the state? Ex. '13'\n"; $stdig = <>; print "What four-digit year are you doing the calculations for? Ex. '2008'\n"; $year = <>; chomp $stlet; chomp $stdig; chomp $year; #Creates the directory mkdir($stlet); $new = $path."\/".$stlet; mkdir("$new/$year"); $infile = '$path/Base/TABLE_1-26.sql'; $outfile = '$path/$stlet/$year/TABLE_1-26.sql'; open(IN,'<$infile') or die "Can't open $infile: $!\n"; open(OUT,">$infile2") or die "Can't open $outfile: $!\n"; print "Working..."; while (my $search = <IN>) { chomp $search; $search =~ s/WHERE pop.grp = 132008/WHERE pop.grp = $stdig$year/g; print OUT "$search\n"; } close(IN); close(OUT); I know I also probably need to tweak the regular expression some, but I'm trying to take things one at a time. This is my first Perl script, and I haven't really been able to find anything that handles .SQL files like this that I can understand. Thank you!

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• A WPF Image Button

  - by psheriff

  Instead of a normal button with words, sometimes you want a button that is just graphical. Yes, you can put an Image control in the Content of a normal Button control, but you still have the button outline, and trying to change the style can be rather difficult. Instead I like creating a user control that simulates a button, but just accepts an image. Figure 1 shows an example of three of these custom user controls to represent minimize, maximize and close buttons for a borderless window. Notice the highlighted image button has a gray rectangle around it. You will learn how to highlight using the VisualStateManager in this blog post.Figure 1: Creating a custom user control for things like image buttons gives you complete control over the look and feel.I would suggest you read my previous blog post on creating a custom Button user control as that is a good primer for what I am going to expand upon in this blog post. You can find this blog post at http://weblogs.asp.net/psheriff/archive/2012/08/10/create-your-own-wpf-button-user-controls.aspx.The User ControlThe XAML for this image button user control contains just a few controls, plus a Visual State Manager. The basic outline of the user control is shown below:<Border Grid.Row="0"        Name="borMain"        Style="{StaticResource pdsaButtonImageBorderStyle}"        MouseEnter="borMain_MouseEnter"        MouseLeave="borMain_MouseLeave"        MouseLeftButtonDown="borMain_MouseLeftButtonDown">  <VisualStateManager.VisualStateGroups>  ... MORE XAML HERE ...  </VisualStateManager.VisualStateGroups>  <Image Style="{StaticResource pdsaButtonImageImageStyle}"         Visibility="{Binding Path=Visibility}"         Source="{Binding Path=ImageUri}"         ToolTip="{Binding Path=ToolTip}" /></Border>There is a Border control named borMain and a single Image control in this user control. That is all that is needed to display the buttons shown in Figure 1. The definition for this user control is in a DLL named PDSA.WPF. The Style definitions for both the Border and the Image controls are contained in a resource dictionary names PDSAButtonStyles.xaml. Using a resource dictionary allows you to create a few different resource dictionaries, each with a different theme for the buttons.The Visual State ManagerTo display the highlight around the button as your mouse moves over the control, you will need to add a Visual State Manager group. Two different states are needed; MouseEnter and MouseLeave. In the MouseEnter you create a ColorAnimation to modify the BorderBrush color of the Border control. You specify the color to animate as “DarkGray”. You set the duration to less than a second. The TargetName of this storyboard is the name of the Border control “borMain” and since we are specifying a single color, you need to set the TargetProperty to “BorderBrush.Color”. You do not need any storyboard for the MouseLeave state. Leaving this VisualState empty tells the Visual State Manager to put everything back the way it was before the MouseEnter event.<VisualStateManager.VisualStateGroups>  <VisualStateGroup Name="MouseStates">    <VisualState Name="MouseEnter">      <Storyboard>        <ColorAnimation             To="DarkGray"            Duration="0:0:00.1"            Storyboard.TargetName="borMain"            Storyboard.TargetProperty="BorderBrush.Color" />      </Storyboard>    </VisualState>    <VisualState Name="MouseLeave" />  </VisualStateGroup></VisualStateManager.VisualStateGroups>Writing the Mouse EventsTo trigger the Visual State Manager to run its storyboard in response to the specified event, you need to respond to the MouseEnter event on the Border control. In the code behind for this event call the GoToElementState() method of the VisualStateManager class exposed by the user control. To this method you will pass in the target element (“borMain”) and the state (“MouseEnter”). The VisualStateManager will then run the storyboard contained within the defined state in the XAML.private void borMain_MouseEnter(object sender,  MouseEventArgs e){  VisualStateManager.GoToElementState(borMain,    "MouseEnter", true);}You also need to respond to the MouseLeave event. In this event you call the VisualStateManager as well, but specify “MouseLeave” as the state to go to.private void borMain_MouseLeave(object sender, MouseEventArgs e){  VisualStateManager.GoToElementState(borMain,     "MouseLeave", true);}The Resource DictionaryBelow is the definition of the PDSAButtonStyles.xaml resource dictionary file contained in the PDSA.WPF DLL. This dictionary can be used as the default look and feel for any image button control you add to a window. <ResourceDictionary  ... >  <!-- ************************* -->  <!-- ** Image Button Styles ** -->  <!-- ************************* -->  <!-- Image/Text Button Border -->  <Style TargetType="Border"         x:Key="pdsaButtonImageBorderStyle">    <Setter Property="Margin"            Value="4" />    <Setter Property="Padding"            Value="2" />    <Setter Property="BorderBrush"            Value="Transparent" />    <Setter Property="BorderThickness"            Value="1" />    <Setter Property="VerticalAlignment"            Value="Top" />    <Setter Property="HorizontalAlignment"            Value="Left" />    <Setter Property="Background"            Value="Transparent" />  </Style>  <!-- Image Button -->  <Style TargetType="Image"         x:Key="pdsaButtonImageImageStyle">    <Setter Property="Width"            Value="40" />    <Setter Property="Margin"            Value="6" />    <Setter Property="VerticalAlignment"            Value="Top" />    <Setter Property="HorizontalAlignment"            Value="Left" />  </Style></ResourceDictionary>Using the Button ControlOnce you make a reference to the PDSA.WPF DLL from your WPF application you will see the “PDSAucButtonImage” control appear in your Toolbox. Drag and drop the button onto a Window or User Control in your application. I have not referenced the PDSAButtonStyles.xaml file within the control itself so you do need to add a reference to this resource dictionary somewhere in your application such as in the App.xaml.<Application.Resources>  <ResourceDictionary>    <ResourceDictionary.MergedDictionaries>      <ResourceDictionary         Source="/PDSA.WPF;component/PDSAButtonStyles.xaml" />    </ResourceDictionary.MergedDictionaries>  </ResourceDictionary></Application.Resources>This will give your buttons a default look and feel unless you override that dictionary on a specific Window or User Control or on an individual button. After you have given a global style to your application and you drag your image button onto a window, the following will appear in your XAML window.<my:PDSAucButtonImage ... />There will be some other attributes set on the above XAML, but you simply need to set the x:Name, the ToolTip and ImageUri properties. You will also want to respond to the Click event procedure in order to associate an action with clicking on this button. In the sample code you download for this blog post you will find the declaration of the Minimize button to be the following:<my:PDSAucButtonImage       x:Name="btnMinimize"       Click="btnMinimize_Click"       ToolTip="Minimize Application"       ImageUri="/PDSA.WPF;component/Images/Minus.png" />The ImageUri property is a dependency property in the PDSAucButtonImage user control. The x:Name and the ToolTip we get for free. You have to create the Click event procedure yourself. This is also created in the PDSAucButtonImage user control as follows:private void borMain_MouseLeftButtonDown(object sender,  MouseButtonEventArgs e){  RaiseClick(e);}public delegate void ClickEventHandler(object sender,  RoutedEventArgs e);public event ClickEventHandler Click;protected void RaiseClick(RoutedEventArgs e){  if (null != Click)    Click(this, e);}Since a Border control does not have a Click event you will create one by using the MouseLeftButtonDown on the border to fire an event you create called “Click”.SummaryCreating your own image button control can be done in a variety of ways. In this blog post I showed you how to create a custom user control and simulate a button using a Border and Image control. With just a little bit of code to respond to the MouseLeftButtonDown event on the border you can raise your own Click event. Dependency properties, such as ImageUri, allow you to set attributes on your custom user control. Feel free to expand on this button by adding additional dependency properties, change the resource dictionary, and even the animation to make this button look and act like you want.NOTE: You can download the sample code for this article by visiting my website at http://www.pdsa.com/downloads. Select “Tips & Tricks”, then select “A WPF Image  Button” from the drop down list.

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• JPA exception: Object: ... is not a known entity type.

  - by Toto

  I'm new to JPA and I'm having problems with the autogeneration of primary key values. I have the following entity: package jpatest.entities; import java.io.Serializable; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class MyEntity implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; public Long getId() { return id; } public void setId(Long id) { this.id = id; } private String someProperty; public String getSomeProperty() { return someProperty; } public void setSomeProperty(String someProperty) { this.someProperty = someProperty; } public MyEntity() { } public MyEntity(String someProperty) { this.someProperty = someProperty; } @Override public String toString() { return "jpatest.entities.MyEntity[id=" + id + "]"; } } and the following main method in other class: public static void main(String[] args) { EntityManagerFactory emf = Persistence.createEntityManagerFactory("JPATestPU"); EntityManager em = emf.createEntityManager(); em.getTransaction().begin(); MyEntity e = new MyEntity("some value"); em.persist(e); /* (exception thrown here) */ em.getTransaction().commit(); em.close(); emf.close(); } This is my persistence unit: <?xml version="1.0" encoding="UTF-8"?> <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> <persistence-unit name="JPATestPU" transaction-type="RESOURCE_LOCAL"> <provider>oracle.toplink.essentials.PersistenceProvider</provider> <class>jpatest.entities.MyEntity</class> <properties> <property name="toplink.jdbc.user" value="..."/> <property name="toplink.jdbc.password" value="..."/> <property name="toplink.jdbc.url" value="jdbc:mysql://localhost:3306/jpatest"/> <property name="toplink.jdbc.driver" value="com.mysql.jdbc.Driver"/> <property name="toplink.ddl-generation" value="create-tables"/> </properties> </persistence-unit> </persistence> When I execute the program I get the following exception in the line marked with the proper comment: Exception in thread "main" java.lang.IllegalArgumentException: Object: jpatest.entities.MyEntity[id=null] is not a known entity type. at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:3212) at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerImpl.persist(EntityManagerImpl.java:205) at jpatest.Main.main(Main.java:...) What am I missing?

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• What is wrong with my gtkrc file?

  - by PP

  I have written following gtkrc file from some other theme gtkrc file. This theme is normal theme with buttons using pixmap theme engine. I have also given background image to GtkEntry. Problem is that, When i use this theme my buttons doesn't show text one them and my entry box does not show cursor. Plus in engine "pixmap" tag I need to specify image name with it's path as I have already mentioned pixmap_path on the top of rc file but why I still need to specify the path in file = "xxx" # gtkrc file. pixmap_path "./backgrounds:./icons:./buttons:./emotions" gtk-button-images = 1 #Icon Sizes and color definitions gtk-icon-sizes = "gtk-small-toolbar=16,16:gtk-large-toolbar=24,24:gtk-button=16,16" gtk-toolbar-icon-size = GTK_ICON_SIZE_SMALL_TOOLBAR gtk_color_scheme = "fg_color:#000000\nbg_color:#848484\nbase_color:#000000\ntext_color:#000000\nselected_bg_color:#f39638\nselected_fg_color:#000000\ntooltip_bg_color:#634110\ntooltip_fg_color:#ffffff" style "theme-default" { xthickness = 10 ythickness = 10 GtkEntry::honors-transparent-bg-hint = 0 GtkMenuItem::arrow-spacing = 20 GtkMenuItem::horizontal-padding = 50 GtkMenuItem::toggle-spacing = 30 GtkOptionMenu::indicator-size = {11, 5} GtkOptionMenu::indicator-spacing = {6, 5, 4, 4} GtkTreeView::horizontal_separator = 5 GtkTreeView::odd_row_color = "#efefef" GtkTreeView::even_row_color = "#e3e3e3" GtkWidget::link-color = "#0062dc" # blue GtkWidget::visited-link-color = "#8c00dc" #purple GtkButton::default_border = { 0, 0, 0, 0 } GtkButton::child-displacement-x = 0 GtkButton::child-displacement-y = 1 GtkWidget::focus-padding = 0 GtkRange::trough-border = 0 GtkRange::slider-width = 19 GtkRange::stepper-size = 19 GtkScrollbar::min_slider_length = 36 GtkScrollbar::has-secondary-backward-stepper = 1 GtkPaned::handle_size = 8 GtkMenuBar::internal-padding = 0 GtkTreeView::expander_size = 13 #15 GtkExpander::expander_size = 13 #17 GtkScale::slider-length = 35 GtkScale::slider-width = 17 GtkScale::trough-border = 0 GtkWidget::link-color = "#0062dc" GtkWidget::visited-link-color = "#8c00dc" #purple WnckTasklist::fade-overlay-rect = 0 WnckTasklist::fade-loop-time = 5.0 # 5 seconds WnckTasklist::fade-opacity = 0.5 # final opacity #makes menu only overlap border GtkMenu::horizontal-offset = -1 #removes extra padding at top and bottom of menus. Makes menuitem overlap border GtkMenu::vertical-padding = 0 #set to the same as roundness, used for better hotspot selection of tabs GtkNotebook::tab-curvature = 2 GtkNotebook::tab-overlap = 4 GtkMenuItem::arrow-spacing = 10 GtkOptionMenu ::indicator-size = {11, 5} GtkCheckButton ::indicator-size = 16 GtkCheckButton ::indicator-spacing = 1 GtkRadioButton ::indicator-size = 16 GtkTreeView::horizontal_separator = 2 GtkTreeView::odd_row_color = "#efefef" GtkTreeView::even_row_color = "#e3e3e3" NautilusIconContainer::normal_icon_color = "#ff0000" GtkEntry::inner-border = {0, 0, 0, 0} GtkScrolledWindow::scrollbar-spacing = 0 GtkScrolledWindow::scrollbars-within-bevel = 1 fg[NORMAL] = @fg_color fg[ACTIVE] = @fg_color fg[PRELIGHT] = @fg_color fg[SELECTED] = @selected_fg_color fg[INSENSITIVE] = shade (3.0,@fg_color) bg[NORMAL] = @bg_color bg[ACTIVE] = shade (0.95,@bg_color) bg[PRELIGHT] = mix(0.92, shade (1.1,@bg_color), @selected_bg_color) bg[SELECTED] = @selected_bg_color bg[INSENSITIVE] = shade (1.06,@bg_color) base[NORMAL] = @base_color base[ACTIVE] = shade (0.65,@base_color) base[PRELIGHT] = @base_color base[SELECTED] = @selected_bg_color base[INSENSITIVE] = shade (1.025,@bg_color) text[NORMAL] = @text_color text[ACTIVE] = shade (0.95,@base_color) text[PRELIGHT] = @text_color text[SELECTED] = @selected_fg_color text[INSENSITIVE] = mix (0.675,shade (0.95,@bg_color),@fg_color) } style "theme-entry" { xthickness = 10 ythickness = 10 GtkEntry::inner-border = {10, 10, 10, 10} GtkEntry::progress-border = {10, 10, 10, 10} GtkEntry::icon-prelight = 1 GtkEntry::state-hintt = 1 #GtkEntry::honors-transparent-bg-hint = 1 text[NORMAL] = "#000000" text[ACTIVE] = "#787878" text[INSENSITIVE] = "#787878" text[SELECTED] = "#FFFFFF" engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = FALSE file = "./backgrounds/entry_background.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = FLAT_BOX state = PRELIGHT recolorable = FALSE file = "./backgrounds/entry_background.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = FLAT_BOX state = ACTIVE recolorable = FALSE file = "./backgrounds/entry_background.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } #----------------------------------------------- #Chat Balloon Incoming background. style "theme-event-box-top-in" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_in_top.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-mid-in" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_in_mid.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-bot-in" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_in_bot.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } #----------------------------------------------- #Chat Balloon Outgoing background. style "theme-event-box-top-out" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_out_top.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-mid-out" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_out_mid.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-event-box-bot-out" { xthickness = 1 ythickness = 1 GtkEventBox::inner-border = {0, 0, 0, 0} engine "pixmap" { image { function = FLAT_BOX state = NORMAL recolorable = TRUE file = "./backgrounds/chat_out_bot.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-wide" = "theme-default" { xthickness = 2 ythickness = 2 } style "theme-wider" = "theme-default" { xthickness = 3 ythickness = 3 } style "theme-button" { GtkButton::inner-border = {0, 0, 0, 0} GtkWidget::focus-line-width = 0 GtkWidget::focus-padding = 0 bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#ff0000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#ffffff" fg[INSENSITIVE] = "#000000" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" text[NORMAL] = "#ff0000" text[INSENSITIVE] = "#ff0000" text[PRELIGHT] = "#ff0000" text[SELECTED] = "#ff0000" text[INSENSITIVE] = "#434346" text[ACTIVE] = "#ff0000" base[NORMAL] = "#ff0000" base[INSENSITIVE] = "#ff0000" base[PRELIGHT] = "#ff0000" base[SELECTED] = "#ff0000" base[INSENSITIVE] = "#ff0000" engine "pixmap" { image { function = BOX state = NORMAL recolorable = TRUE file = "./buttons/LightButtonAct.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = BOX state = PRELIGHT recolorable = TRUE file = "./buttons/LightButtonRoll.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = BOX state = ACTIVE recolorable = TRUE file = "./buttons/LightButtonClicked.png" border = { 0, 0, 0, 0 } stretch = TRUE } image { function = BOX state = INSENSITIVE recolorable = TRUE file = "./buttons/LightButtonInact.png" border = { 0, 0, 0, 0 } stretch = TRUE } } } style "theme-toolbar" { xthickness = 2 ythickness = 2 bg[NORMAL] = shade (1.078,@bg_color) } style "theme-handlebox" { bg[NORMAL] = shade (0.95,@bg_color) } style "theme-scale" { bg[NORMAL] = shade (1.06, @bg_color) bg[PRELIGHT] = mix(0.85, shade (1.1,@bg_color), @selected_bg_color) bg[SELECTED] = "#4d4d55" } style "theme-range" { bg[NORMAL] = shade (1.12,@bg_color) bg[ACTIVE] = @bg_color bg[PRELIGHT] = mix(0.95, shade (1.10,@bg_color), @selected_bg_color) #Arrows text[NORMAL] = shade (0.275,@selected_fg_color) text[PRELIGHT] = @selected_fg_color text[ACTIVE] = shade (0.10,@selected_fg_color) text[INSENSITIVE] = mix (0.80,shade (0.90,@bg_color),@fg_color) } style "theme-notebook" = "theme-wider" { xthickness = 4 ythickness = 4 GtkNotebook::tab-curvature = 5 GtkNotebook::tab-vborder = 1 GtkNotebook::tab-overlap = 1 GtkNotebook::tab-vborder = 1 bg[NORMAL] = "#d2d2d2" bg[ACTIVE] = "#e3e3e3" bg[PRELIGHT] = "#848484" bg[SELECTED] = "#848484" bg[INSENSITIVE] = "#848484" text[PRELIGHT] = @selected_fg_color text[NORMAL] = "#000000" text[ACTIVE] = "#737373" text[SELECTED] = "#000000" text[INSENSITIVE] = "#737373" fg[PRELIGHT] = @selected_fg_color fg[NORMAL] = "#000000" fg[ACTIVE] = "#737373" fg[SELECTED] = "#000000" fg[INSENSITIVE] = "#737373" } style "theme-paned" { bg[PRELIGHT] = shade (1.1,@bg_color) } style "theme-panel" { # Menu fg[PRELIGHT] = @selected_fg_color font_name = "Bold 9" text[PRELIGHT] = @selected_fg_color } style "theme-menu" { xthickness = 0 ythickness = 0 bg[NORMAL] = shade (1.16,@bg_color) bg[SELECTED] = "#ff9a00" text[PRELIGHT] = @selected_fg_color fg[PRELIGHT] = @selected_fg_color } style "theme-menu-item" = "theme-menu" { xthickness = 3 ythickness = 3 base[SELECTED] = "#ff9a00" base[NORMAL] = "#ff9a00" base[PRELIGHT] = "#ff9a00" base[INSENSITIVE] = "#ff9a00" base[ACTIVE] = "#ff9a00" bg[SELECTED] = "#ff9a00" bg[NORMAL] = shade (1.16,@bg_color) } style "theme-menubar" { #TODO } style "theme-menubar-item" = "theme-menu-item" { #TODO bg[SELECTED] = "#ff9a00" } style "theme-tree" { xthickness = 2 ythickness = 1 font_name = "Bold 9" GtkWidget::focus-padding = 0 bg[NORMAL] = "#5a595a" bg[PRELIGHT] = "#5a595a" bg[ACTIVE] = "#5a5a5a" fg[NORMAL] = "#ffffff" fg[ACTIVE] = "#ffffff" fg[SELECTED] = "#ff9a00" fg[PRELIGHT] = "#ffffff" bg[SELECTED] = "#ff9a00" base[SELECTED] = "#ff9a00" base[NORMAL] = "#ff9a00" base[PRELIGHT] = "#ff9a00" base[INSENSITIVE] = "#ff9a00" base[ACTIVE] = "#ff9a00" text[NORMAL] = "#000000" text[PRELIGHT] = "#ff9a00" text[ACTIVE] = "#ff9a00" text[SELECTED] = "#ff9a00" text[INSENSITIVE] = "#434346" } style "theme-tree-arrow" { bg[NORMAL] = mix(0.70, shade (0.60,@bg_color), shade (0.80,@selected_bg_color)) bg[PRELIGHT] = mix(0.80, @bg_color, @selected_bg_color) } style "theme-progressbar" { font_name = "Bold" bg[SELECTED] = @selected_bg_color fg[PRELIGHT] = @selected_fg_color bg[ACTIVE] = "#fe7e00" bg[NORMAL] = "#ffba00" } style "theme-tooltips" = "theme-wider" { font_name = "Liberation sans 10" bg[NORMAL] = @tooltip_bg_color fg[NORMAL] = @tooltip_fg_color text[NORMAL] = @tooltip_fg_color } style "theme-combo" = "theme-button" { xthickness = 4 ythickness = 4 text[NORMAL] = "#fd7d00" text[INSENSITIVE] = "#8a8a8a" base[NORMAL] = "#e0e0e0" base[INSENSITIVE] = "#aeaeae" } style "theme-combo-box" = "theme-button" { xthickness = 3 ythickness = 2 bg[NORMAL] = "#343539" bg[PRELIGHT] = "#343539" bg[ACTIVE] = "#26272b" bg[INSENSITIVE] = "#404145" } style "theme-entry-combo-box" { xthickness = 6 ythickness = 3 text[NORMAL] = "#000000" text[INSENSITIVE] = "#8a8a8a" base[NORMAL] = "#ffffff" base[INSENSITIVE] = "#aeaeae" } style "theme-combo-arrow" = "theme-button" { xthickness = 1 ythickness = 1 } style "theme-view" { xthickness = 0 ythickness = 0 } style "theme-check-radio-buttons" { GtkWidget::interior-focus = 0 GtkWidget::focus-padding = 1 text[NORMAL] = "#ff0000" base[NORMAL] = "#ff0000" text[SELECTED] = "#ffffff" text[INSENSITIVE] = shade (0.625,@bg_color) base[PRELIGHT] = mix(0.80, @base_color, @selected_bg_color) bg[NORMAL] = "#438FC6" bg[INSENSITIVE] = "#aeaeae" bg[SELECTED] = "#ff8a01" } style "theme-radio-buttons" = "theme-button" { GtkWidget::interior-focus = 0 GtkWidget::focus-padding = 1 text[SELECTED] = @selected_fg_color text[INSENSITIVE] = shade (0.625,@bg_color) base[PRELIGHT] = mix(0.80, @base_color, @selected_bg_color) bg[NORMAL] = "#ffffff" bg[INSENSITIVE] = "#dcdcdc" bg[SELECTED] = @selected_bg_color } style "theme-spin-button" { bg[NORMAL] = "#d2d2d2" bg[ACTIVE] = "#868686" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = shade(1.10,@selected_bg_color) bg[INSENSITIVE] = "#dcdcdc" base[NORMAL] = "#ffffff" base[INSENSITIVE] = "#dcdcdc" text[NORMAL] = "#000000" text[INSENSITIVE] = "#aeaeae" } style "theme-calendar" { xthickness = 0 ythickness = 0 bg[NORMAL] = "#676767" bg[PRELIGHT] = shade(0.92,@bg_color) bg[ACTIVE] = "#ff0000" bg[INSENSITIVE] = "#ff0000" bg[SELECTED] = "#ff0000" text[PRELIGHT] = "#000000" text[NORMAL] = "#000000" text[INSENSITIVE]= "#000000" text[SELECTED] = "#ffffff" text[ACTIVE] = "#000000" fg[NORMAL] = "#ffffff" fg[PRELIGHT] = "#ffffff" fg[INSENSITIVE] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" base[NORMAL] = "#ff0000" base[NORMAL] = "#aeaeae" base[INSENSITIVE] = "#00ff00" base[SELECTED] = "#f3720d" base[ACTIVE] = "#f3720d" } style "theme-separator-menu-item" { xthickness = 1 ythickness = 0 GtkSeparatorMenuItem::horizontal-padding = 2 # We are setting the desired height by using wide-separators # There is no other way to get the odd height ... GtkWidget::wide-separators = 1 GtkWidget::separator-width = 1 GtkWidget::separator-height = 5 } style "theme-frame" { xthickness = 10 ythickness = 0 GtkWidget::LABEL-SIDE-PAD = 14 GtkWidget::LABEL-PAD = 23 fg[NORMAL] = "#000000" fg[ACTIVE] = "#000000" fg[PRELIGHT] = "#000000" fg[SELECTED] = "#000000" fg[INSENSITIVE] = "#000000" bg[NORMAL] = "#e2e2e2" bg[ACTIVE] = "#000000" bg[PRELIGHT] = "#000000" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#000000" base[NORMAL] = "#000000" base[ACTIVE] = "#000000" base[PRELIGHT] = "#000000" base[SELECTED] = "#000000" base[INSENSITIVE]= "#000000" text[NORMAL] = "#000000" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[INSENSITIVE]= "#000000" } style "theme-textview" { text[NORMAL] = "#000000" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[INSENSITIVE] = "#434648" bg[NORMAL] = "#ffffff" bg[ACTIVE] = "#ffffff" bg[PRELIGHT] = "#ffffff" bg[SELECTED] = "#ffffff" bg[INSENSITIVE] = "#ffffff" fg[NORMAL] = "#ffffff" fg[ACTIVE] = "#ffffff" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[INSENSITIVE] = "#ffffff" base[NORMAL] = "#ffffff" base[ACTIVE] = "#ffffff" base[PRELIGHT] = "#ffffff" base[SELECTED] = "#ff9a00" base[INSENSITIVE] = "#ffffff" } style "theme-clist" { text[NORMAL] = "#000000" text[ACTIVE] = "#000000" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[INSENSITIVE] = "#434648" bg[NORMAL] = "#353438" bg[ACTIVE] = "#ff9a00" bg[PRELIGHT] = "#ff9a00" bg[SELECTED] = "#ff9a00" bg[INSENSITIVE] = "#ffffff" fg[NORMAL] = "#000000" fg[ACTIVE] = "#ff9a00" fg[PRELIGHT] = "#ff9a00" fg[SELECTED] = "#fdff00" fg[INSENSITIVE] = "#757575" base[NORMAL] = "#ffffff" base[ACTIVE] = "#fdff00" base[PRELIGHT] = "#000000" base[SELECTED] = "#fdff00" base[INSENSITIVE] = "#757575" } style "theme-label" { bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#000000" fg[INSENSITIVE] = "#434346" fg[PRELIGHT] = "#000000" fg[SELECTED] = "#000000" fg[ACTIVE] = "#000000" text[NORMAL] = "#ffffff" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#ffffff" text[SELECTED] = "#ffffff" text[ACTIVE] = "#ffffff" base[NORMAL] = "#000000" base[INSENSITIVE] = "#00ff00" base[PRELIGHT] = "#0000ff" base[ACTIVE] = "#f39638" } style "theme-button-label" { bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#ffffff" fg[INSENSITIVE] = "#434346" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" text[NORMAL] = "#000000" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[ACTIVE] = "#000000" base[NORMAL] = "#000000" base[INSENSITIVE] = "#00ff00" base[PRELIGHT] = "#0000ff" base[SELECTED] = "#ff00ff" base[ACTIVE] = "#ffff00" } style "theme-button-check-radio-label" { bg[NORMAL] = "#414143" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" fg[NORMAL] = "#000000" fg[INSENSITIVE] = "#434346" fg[PRELIGHT] = "#000000" fg[SELECTED] = "#000000" fg[ACTIVE] = "#000000" text[NORMAL] = "#ffffff" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#ffffff" text[SELECTED] = "#000000" text[ACTIVE] = "#ffffff" base[NORMAL] = "#000000" base[INSENSITIVE] = "#00ff00" base[PRELIGHT] = "#0000ff" base[SELECTED] = "#ff00ff" base[ACTIVE] = "#ffff00" } style "theme-table" { bg[NORMAL] = "#848484" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#7f4426" bg[SELECTED] = "#000000" bg[INSENSITIVE] = "#434346" } style "theme-iconview" { GtkWidget::focus-line-width=1 bg[NORMAL] = "#000000" bg[ACTIVE] = "#c19676" bg[PRELIGHT] = "#c19676" bg[SELECTED] = "#c19676" bg[INSENSITIVE] = "#969696" fg[NORMAL] = "#ffffff" fg[INSENSITIVE] = "#ffffff" fg[PRELIGHT] = "#ffffff" fg[SELECTED] = "#ffffff" fg[ACTIVE] = "#ffffff" text[NORMAL] = "#000000" text[INSENSITIVE] = "#434346" text[PRELIGHT] = "#000000" text[SELECTED] = "#000000" text[ACTIVE] = "#000000" base[NORMAL] = "#ffffff" base[INSENSITIVE] = "#434346" base[PRELIGHT] = "#FAD184" base[SELECTED] = "#FAD184" base[ACTIVE] = "#FAD184" } # Set Widget styles class "GtkWidget" style "theme-default" class "GtkScale" style "theme-scale" class "GtkRange" style "theme-range" class "GtkPaned" style "theme-paned" class "GtkFrame" style "theme-frame" class "GtkMenu" style "theme-menu" class "GtkMenuBar" style "theme-menubar" class "GtkEntry" style "theme-entry" class "GtkProgressBar" style "theme-progressbar" class "GtkToolbar" style "theme-toolbar" class "GtkSeparator" style "theme-wide" class "GtkCalendar" style "theme-calendar" class "GtkTable" style "theme-table" widget_class "*<GtkMenuItem>*" style "theme-menu-item" widget_class "*<GtkMenuBar>.<GtkMenuItem>*" style "theme-menubar-item" widget_class "*<GtkSeparatorMenuItem>*" style "theme-separator-menu-item" widget_class "*<GtkLabel>" style "theme-label" widget_class "*<GtkButton>" style "theme-button" widget_class "*<GtkButton>*<GtkLabel>*" style "theme-button-label" widget_class "*<GtkCheckButton>" style "theme-check-radio-buttons" widget_class "*<GtkToggleButton>.<GtkLabel>*" style "theme-button" widget_class "*<GtkCheckButton>.<GtkLabel>*" style "theme-button-check-radio-label" widget_class "*<GtkRadioButton>.<GtkLabel>*" style "theme-button-check-radio-label" widget_class "*<GtkTextView>" style "theme-textview" widget_class "*<GtkList>" style "theme-textview" widget_class "*<GtkCList>" style "theme-clist" widget_class "*<GtkIconView>" style "theme-iconview" widget_class "*<GtkHandleBox>" style "theme-handlebox" widget_class "*<GtkNotebook>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkEventBox>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkDrawingArea>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkLayout>" style "theme-notebook" widget_class "*<GtkNotebook>*<GtkViewport>" style "theme-notebook" widget_class "*<GtkNotebook>.<GtkLabel>*" style "theme-notebook" #for tabs # Combo Box Stuff widget_class "*<GtkCombo>*" style "theme-combo" widget_class "*<GtkComboBox>*<GtkButton>" style "theme-combo-box" widget_class "*<GtkComboBoxEntry>*" style "theme-entry-combo-box" widget_class "*<GtkSpinButton>*" style "theme-spin-button" widget_class "*<GtkSpinButton>*<GtkArrow>*" style:highest "theme-tree-arrow" # Tool Tips Stuff widget "gtk-tooltip*" style "theme-tooltips" # Tree View Stuff widget_class "*<GtkTreeView>.<GtkButton>*" style "theme-tree" widget_class "*<GtkCTree>.<GtkButton>*" style "theme-tree" widget_class "*<GtkList>.<GtkButton>*" style "theme-tree" widget_class "*<GtkCList>.<GtkButton>*" style "theme-tree" # For arrow bg widget_class "*<GtkTreeView>.<GtkButton>*<GtkArrow>" style "theme-tree-arrow" widget_class "*<GtkCTree>.<GtkButton>*<GtkArrow>" style "theme-tree-arrow" widget_class "*<GtkList>.<GtkButton>*<GtkArrow>" style "theme-tree-arrow" ####################################################### ## GNOME specific ####################################################### widget_class "*.ETree.ECanvas" style "theme-tree" widget_class "*.ETable.ECanvas" style "theme-tree" style "panelbuttons" = "theme-button" { # As buttons are draw lower this helps center text xthickness = 3 ythickness = 3 } widget_class "*Panel*<GtkButton>*" style "panelbuttons" style "murrine-fg-is-text-color-workaround" { text[NORMAL] = "#000000" text[ACTIVE] = "#fdff00" text[SELECTED] = "#fdff00" text[INSENSITIVE] = "#757575" bg[SELECTED] = "#b85e03" bg[ACTIVE] = "#b85e03" bg[SELECTED] = "#b85e03" fg[SELECTED] = "#ffffff" fg[NORMAL] = "#ffffff" fg[ACTIVE] = "#ffffff" fg[INSENSITIVE] = "#434348" fg[PRELIGHT] = "#ffffff" base[SELECTED] = "#ff9a00" base[NORMAL] = "#ffffff" base[ACTIVE] = "#ff9a00" base[INSENSITIVE] = "#434348" base[PRELIGHT] = "#ffffff" } widget_class "*.<GtkTreeView>*" style "murrine-fg-is-text-color-workaround" style "murrine-combobox-text-color-workaround" { text[NORMAL] = "#FFFFF" text[PRELIGHT] = "#FFFFF" text[SELECTED] = "#FFFFF" text[ACTIVE] = "#FFFFF" text[INSENSITIVE] = "#FFFFF" } widget_class "*.<GtkComboBox>.<GtkCellView>" style "murrine-combobox-text-color-workaround" style "murrine-menuitem-text-is-fg-color-workaround" { bg[NORMAL] = "#0000ff" text[NORMAL] = "#ffffff" text[PRELIGHT] = "#ffffff"#"#FD7D00" text[SELECTED] = "#ffffff"#"#ff0000"# @selected_fg_color text[ACTIVE] = "#ffffff"#"#ff0000"# "#FD7D00" text[INSENSITIVE] = "#ffffff"#ff0000"# "#414143" } widget "*.gtk-combobox-popup-menu.*" style "murrine-menuitem-text-is-fg-color-workaround"

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• How do I serialize an object to xml but not have it be the root element of the xml document

  - by mezoid

  I have the following object: public class MyClass { public int Id { get; set;} public string Name { get; set; } } I'm wanting to serialize this to the following xml string: <MyClass> <Id>1</Id> <Name>My Name</Name> </MyClass> Unfortunately, when I use the XMLSerializer I get a string which looks like: <?xml version="1.0" encoding="utf-8"?> <MyClass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Id>1</Id> <Name>My Name</Name> </MyClass> I'm not wanting MyClass to be the root element the document, rather I'm eventually wanting to add the string with other similar serialized objects which will be within a larger xml document. i.e. Eventually I'll have a xml string which looks like this: <Classes> <MyClass> <Id>1</Id> <Name>My Name</Name> </MyClass> <MyClass> <Id>1</Id> <Name>My Name</Name> </MyClass> </Classes>" My first thought was to create a class as follows: public class Classes { public List<MyClass> MyClasses { get; set; } } ...but that just addes an additional node called MyClasses to wrap the list of MyClass.... My gut feeling is that I'm approaching this the wrong way and that my lack of experience with creating xml files isn't helping to point me to some part of the .NET framework or some other library that simplifies this.

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• Advantage of creating a generic repository vs. specific repository for each object?

  - by LuckyLindy

  We are developing an ASP.NET MVC application, and are now building the repository/service classes. I'm wondering if there are any major advantages to creating a generic IRepository interface that all repositories implement, vs. each Repository having its own unique interface and set of methods. For example: a generic IRepository interface might look like (taken from this answer): public interface IRepository : IDisposable { T[] GetAll<T>(); T[] GetAll<T>(Expression<Func<T, bool>> filter); T GetSingle<T>(Expression<Func<T, bool>> filter); T GetSingle<T>(Expression<Func<T, bool>> filter, List<Expression<Func<T, object>>> subSelectors); void Delete<T>(T entity); void Add<T>(T entity); int SaveChanges(); DbTransaction BeginTransaction(); } Each Repository would implement this interface (e.g. CustomerRepository:IRepository, ProductRepository:IRepository, etc). The alternate that we've followed in prior projects would be: public interface IInvoiceRepository : IDisposable { EntityCollection<InvoiceEntity> GetAllInvoices(int accountId); EntityCollection<InvoiceEntity> GetAllInvoices(DateTime theDate); InvoiceEntity GetSingleInvoice(int id, bool doFetchRelated); InvoiceEntity GetSingleInvoice(DateTime invoiceDate, int accountId); //unique InvoiceEntity CreateInvoice(); InvoiceLineEntity CreateInvoiceLine(); void SaveChanges(InvoiceEntity); //handles inserts or updates void DeleteInvoice(InvoiceEntity); void DeleteInvoiceLine(InvoiceLineEntity); } In the second case, the expressions (LINQ or otherwise) would be entirely contained in the Repository implementation, whoever is implementing the service just needs to know which repository function to call. I guess I don't see the advantage of writing all the expression syntax in the service class and passing to the repository. Wouldn't this mean easy-to-messup LINQ code is being duplicated in many cases? For example, in our old invoicing system, we call InvoiceRepository.GetSingleInvoice(DateTime invoiceDate, int accountId) from a few different services (Customer, Invoice, Account, etc). That seems much cleaner than writing the following in multiple places: rep.GetSingle(x => x.AccountId = someId && x.InvoiceDate = someDate.Date); The only disadvantage I see to using the specific approach is that we could end up with many permutations of Get* functions, but this still seems preferable to pushing the expression logic up into the Service classes. What am I missing?

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• Good object/DB set-up for CMS-esque app for managing content and user permissions?

  - by sah302

  Hi all, so I am writing a big CMS-esque app to allow users to manage web content through web applications, I've got a pretty good db-driven user permission system going, but am having trouble coming up with a good way to handle content groups and pages, I've got a couple options and not sure which one to take. Furthermore, I am not sure how to handle static page updates that have no 'widgets' in them. My current set-up for permissions is this: Objects: User, UserGroup, UserUserGroup, UserGroupType Standard many to many relationship User -> UserUserGroup <- UserGroup each Usergroup has a UserGroupType, which could be anything from Title, Department, to PermissionGroup. PermissionGroup manages the permissions. Right now on a per page basis I check permissions based on their PermissionsGroups. So for a page which has CMS features for a news widget, I check for permission groups of "Site Admin" and "News Admin". Now the issue I am coming to is, the site has many different departments involved. No problem I think, I can just have a EntityContentGroup so any widget app can be used for any departments. So my HR department, each of their news items would be in the EntityContentGroup with the news item ID, and content group of "HR" or "HR News". But maybe this isn't the most efficient way to go about it? I don't want to put the content group simply as a NewsItemType because some news items could apply to multiple areas, so I want to be able to assign them to as many areas as I want. Likewise, all of my widget apps have this, so that's why I decided to choose EntityContentGroup and not just NewsItemContentGroup. I was also thinking well instead of doing a contentGroup do a Page object that says which page some entity should be on. It seems almost like the same thing, but would I want to use Page for something else? I was thinking Page would be used for static pages with no widgets, a simple Rich Text Editor can edit the content of that page and I save that item to a page?? And then instead of doing a page level check for UserGroup permissions, would it be better to associate a usergroup to a contentgroup, and then just depending on what contentGroup content on the page is displayed, determine the permissions through that relationship? Is that better? I am not sure at this point. I guess I am just getting a tad overwhelmed at this is the largest app in scope and size that I have ever written. What is the best approach for this based on my current user permission set-up?

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• Want to show <embed> and <object> tags from YUI editor as a text rather then a video.

  - by user208678

  I am using YUI rich text editor on my website (php/mysql), so that a user may enter textual matter/articles through it. But if a user copies and paste some embed code in the textarea, from any video sites like youtube, it should get saved as a text block and not as a playing video when showing the text content on the browser. Now YUI automatically converts the characters into html entities which ever is needed. Please note that if I put a new line in the yui editor (by pressing "Enter" key), it will be converted into a "<br>" tag in the background and this will not get html entity encoded when passing the value to my backend PHP script. But If I copy and paste any embed tag or for that reason any valid html tags in the textarea, it will be html entity encoded by YUI. Now to support UTF-8 characters, I am using a function (DBVarConv) in my php script before saving it into my database. The code for the function is given below function DBVarConv($var,$isEncoded = false) { if($isEncoded) return addslashes(htmlentities($var, ENT_QUOTES, 'UTF-8', false)); else return htmlentities ($var, ENT_QUOTES, 'UTF-8', false); } $myeditorData = DBVarConv($myeditorData, true); // Save $myeditorData in database. While showing the data in the browser, I am using another function called "smart_html_entity_decode". The code is given below. function smart_html_entity_decode($text, $isAddslashesUsed = false) { if($isAddslashesUsed) $tmp = stripslashes(html_entity_decode($text, ENT_QUOTES, 'UTF-8')); else $tmp = html_entity_decode($text, ENT_QUOTES, 'UTF-8'); if ($tmp == $text) return $tmp; return smart_html_entity_decode($tmp, $isAddslashesUsed); } // Get $myData from database $myData=smart_html_entity_decode($myData, true); echo $myData; The problem is that in doing so, it is also decoding the embed and object tags from their html encoded entities and as a result my obejct tags are shown as a video and not as a simple text. Try using the text editor at tumblr.com. If you paste an embed code in the editor, it will be shown as a text block not as a video. I am trying to build the same functionality on my website with UTF-8 support. Any help will be highly appreciated.

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• Python4Delphi: Returning a python object in a function. (DelphiWrapper)

  - by Gabriel Fonseca

  I am using python4delphi. ow can I return an object from a wrapped Delphi class function? Code Snippet: I have a simple Delphi Class that i wrapped to Python Script, right? TSimple = Class Private function getvar1:string; Public Published property var1:string read getVar1; function getObj:TSimple; end; ... function TSimple.getVar1:string; begin result:='hello'; end; function TSimple.getObj:TSimple; begin result:=self; end; I made the TPySimple like the demo32 to give class access to the python code. My python module name is test. TPyDado = class(TPyDelphiPersistent) // Constructors & Destructors constructor Create( APythonType : TPythonType ); override; constructor CreateWith( PythonType : TPythonType; args : PPyObject ); override; // Basic services function Repr : PPyObject; override; class function DelphiObjectClass : TClass; override; end; ... { TPyDado } constructor TPyDado.Create(APythonType: TPythonType); begin inherited; // we need to set DelphiObject property DelphiObject := TDado.Create; with TDado(DelphiObject) do begin end; Owned := True; // We own the objects we create end; constructor TPyDado.CreateWith(PythonType: TPythonType; args: PPyObject); begin inherited; with GetPythonEngine, DelphiObject as TDado do begin if PyArg_ParseTuple( args, ':CreateDado' ) = 0 then Exit; end; end; class function TPyDado.DelphiObjectClass: TClass; begin Result := TDado; end; function TPyDado.Repr: PPyObject; begin with GetPythonEngine, DelphiObject as TDado do Result := VariantAsPyObject(Format('',[])); // or Result := PyString_FromString( PAnsiChar(Format('(%d, %d)',[x, y])) ); end; And now the python code: import test a = test.Simple() # try access the property var1 and everything is right print a.var1 # work's, but.. b = a.getObj(); # raise a exception that not find any attributes named getObj. # if the function returns a string for example, it's work.

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• Is there any way to add a MouseListener to a Graphic object ?

  - by Fahad

  Hi, Is there any way to add a MouseListener to a Graphic object. I have this simple GUI that draw an oval. What I want is handling the event when the user clicks on the oval import java.awt.*; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.*; public class Gui2 extends JFrame { JFrame frame = new JFrame(); MyDrawPanel drawpanel = new MyDrawPanel(); public static void main(String[] args) { Gui2 gui = new Gui2(); gui.go(); } public void go() { frame.getContentPane().add(drawpanel); // frame.addMouseListener(this); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300, 300); frame.setVisible(true); } } class MyDrawPanel extends JComponent implements MouseListener { public void paintComponent(Graphics g) { int red = (int) (Math.random() * 255); int green = (int) (Math.random() * 255); int blue = (int) (Math.random() * 255); Color startrandomColor = new Color(red, green, blue); red = (int) (Math.random() * 255); green = (int) (Math.random() * 255); blue = (int) (Math.random() * 255); Color endrandomColor = new Color(red, green, blue); Graphics2D g2d = (Graphics2D) g; this.addMouseListener(this); GradientPaint gradient = new GradientPaint(70, 70, startrandomColor, 150, 150, endrandomColor); g2d.setPaint(gradient); g2d.fillOval(70, 70, 100, 100); } @Override public void mouseClicked(MouseEvent e) { if ((e.getButton() == 1) && (e.getX() >= 70 && e.getX() <= 170 && e.getY() >= 70 && e .getY() <= 170)) { this.repaint(); // JOptionPane.showMessageDialog(null,e.getX()+ "\n" + e.getY()); } } @Override public void mouseEntered(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseExited(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mousePressed(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseReleased(MouseEvent e) { // TODO Auto-generated method stub } } This Works Except it fires when the click is within a virtual box around the oval. Could anyone help me to have it fire when the click is EXACTLY on the oval. Thanks in advance.

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• WPF DataGrid, Help with Binding to a List<X> where each X has a Dictionary<Y,object> property.

  - by panamack

  I'm building an application which helps someone manage an event and works with data originating from Excel. I want to use the WPF Toolkit DataGrid to display the incoming data but can't guarantee how many Columns there are going to be or what information they will contain. I'd like to have an Info class that stores column information and have each Visitor at my Event own a Dictionary that uses shared references to Info objects for the keys. Here's the general gist: public class Info{ public string Name{get;set;} public int InfoType{get;set;} } public class Visitor{ public Dictionary<Info,object> VisitorInfo {get;set;} } public class Event{ public List<Visitor> Visitors{get;set;} public Event(){ Info i1 = new Info(){ Name = "ID", InfoType = 0};// type 0 for an id Info i2 = new Info(){ Name = "Name", InfoType = 1};// type 1 for a string Info i3 = new Info(){ Name = "City", InfoType = 1}; Visitor v1 = new Visitor(); v1.VisitorInfo.Add(i1, 0); v1.VisitorInfo.Add(i2, "Foo Harris"); v1.VisitorInfo.Add(i3, "Barsville"); Visitor v2 = new Visitor(); ... this.Visitors.Add(v1); this.Visitors.Add(v2); ... } } XAML: <!-- Window1.xaml --> ... <local:Event x:Key="MyEvent"/> ... <wpftk:DataGrid DataContext="{StaticResource MyEvent}" ItemsSource="{Binding Path=Visitors}" /> Disappointingly, DataGrid just sees a collection of Visitors each having a VisitorInfo property and displays one column called VisitorInfo with the string "(Collection)" once for each Visitor. As a workaround I've created a ListTVisitorToDataTableConverter that maps Infos to DataColumns and Visitors to DataRows and used it like this: <wpftk:DataGrid DataContext="{StaticResource Event}" ItemsSource{Binding Path=Visitors, Converter={StaticResource MySmellyListTVisitorToDataTableConverter}}" /> I don't think this is good though, I haven't started trying to convert back yet which I guess I'll need to do if I want to be able to edit any data! How can I do better? Thanks.

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• Why does std::map operator[] create an object if the key doesn't exist?

  - by n1ck

  Hi, I'm pretty sure I already saw this question somewhere (comp.lang.c++? Google doesn't seem to find it there either) but a quick search here doesn't seem to find it so here it is: Why does the std::map operator[] create an object if the key doesn't exist? I don't know but for me this seems counter-intuitive if you compare to most other operator[] (like std::vector) where if you use it you must be sure that the index exists. I'm wondering what's the rationale for implementing this behavior in std::map. Like I said wouldn't it be more intuitive to act more like an index in a vector and crash (well undefined behavior I guess) when accessed with an invalid key? Refining my question after seeing the answers: Ok so far I got a lot of answers saying basically it's cheap so why not or things similar. I totally agree with that but why not use a dedicated function for that (I think one of the comment said that in java there is no operator[] and the function is called put)? My point is why doesn't map operator[] work like a vector? If I use operator[] on an out of range index on a vector I wouldn't like it to insert an element even if it was cheap because that probably mean an error in my code. My point is why isn't it the same thing with map. I mean, for me, using operator[] on a map would mean: i know this key already exist (for whatever reason, i just inserted it, I have redundancy somewhere, whatever). I think it would be more intuitive that way. That said what are the advantage of doing the current behavior with operator[] (and only for that, I agree that a function with the current behavior should be there, just not operator[])? Maybe it give clearer code that way? I don't know. Another answer was that it already existed that way so why not keep it but then, probably when they (the ones before stl) choose to implement it that way they found it provided an advantage or something? So my question is basically: why choose to implement it that way, meaning a somewhat lack of consistency with other operator[]. What benefit do it give? Thanks

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• Two collections and a for loop. (Urgent help needed) Checking an object variable against an inputted

  - by Elliott

  Hi there, I'm relatively new to java, I'm certain the error is trivial. But can't for the life of me spot it. I have an end of term exam on monday and currently trying to get to grips with past papers! Anyway heregoes, in another method (ALGO_1) I search over elements of and check the value H_NAME equals a value entered in the main. When I attempt to run the code I get a null pointer exception, also upon trying to print (with System.out.println etc) the H_NAME value after each for loop in the snippet I also get a null statement returned to me. I am fairly certain that the collection is simply not storing the data gathered up by the Scanner. But then again when I check the collection size with size() it is about the right size. Either way I'm pretty lost and would appreciate the help. Main questions I guess to ask are: from the readBackground method is the data.add in the wrong place? is the snippet simply structured wrongly? oh and another point when I use System.out.println to check the Background object values name, starttime, increment etc they print out fine. Thanks in advance.(PS im guessing the formatting is terrible, apologies.) snippet of code: for(Hydro hd: hydros){ System.out.println(hd.H_NAME); for(Background back : backgs){ System.out.println(back.H_NAME); if(back.H_NAME.equals(hydroName)){ //get error here public static Collection<Background> readBackground(String url) throws IOException { URL u = new URL(url); InputStream is = u.openStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader b = new BufferedReader(isr); String line =""; Vector<Background> data = new Vector<Background>(); while((line = b.readLine())!= null){ Scanner s = new Scanner(line); String name = s.next(); double starttime = Double.parseDouble(s.next()); double increment = Double.parseDouble(s.next()); double sum = 0; double p = 0; double nterms = 0; while((s.hasNextDouble())){ p = Double.parseDouble(s.next()); nterms++; sum += p; } double pbmean = sum/nterms; Background SAMP = new Background(name, starttime, increment, pbmean); data.add(SAMP); } return data; } Edit/Delete Message

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