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• Python, SWIG and other strange things

  - by wanderameise

  hey, I have a firmware for an USB module I can already control by visual C. Now I want to port this to python. for this I need the octopus library which is written in c. I found a file called octopus_wrap which was created by SWIG! then I found a makefile which says: python2.5: swig -python -outdir ./ ../octopus.i gcc -fPIC -c ../../liboctopus/src/octopus.c gcc -fPIC -c ../octopus_wrap.c -I /usr/include/python2.5 gcc -fPIC -shared octopus_wrap.o octopus.o /usr/lib/libusb.so -o _octopus.so python2.4: swig -python -outdir ./ ../octopus.i gcc -fPIC -c ../../liboctopus/src/octopus.c gcc -fPIC -c ../octopus_wrap.c -I /usr/include/python2.4 gcc -fPIC -shared octopus_wrap.o octopus.o /usr/lib/libusb.so -o _octopus.so win: gcc -fPIC -c ../../liboctopus/src/octopus.c -I /c/Programme/libusb-win32-device-bin-0.1.10.1/include gcc -fPIC -c octopus_wrap.c -I /c/Python25/libs -lpython25 -I/c/Python25/include -I /c/Programme/libusb-win32-device-bin-0.1.10.1/include gcc -fPIC -shared *.o -o _octopus.pyd -L/c/Python25/libs -lpython25 -lusb -L/c/Programme/libusb-win32-device-bin-0.1.10.1/lib/gcc clean: rm -f octopus* _octopus* install_python2.4: cp _octopus.so /usr/local/lib/python2.4/site-packages/ cp octopus.py /usr/local/lib/python2.4/site-packages/ install_python2.5: cp _octopus.so /usr/local/lib/python2.5/site-packages/ cp octopus.py /usr/local/lib/python2.5/site-packages/ I dont know how to handle this but as far as I can see octopus.py and _octopus.so are the resulting output files which are relevant to python right? luckily someone already did that and so I put those 2 files to my "python26/lib" folder (hope it doesnt matter if it´s python 2.5 or 2.6?!) So when working with the USB device the octopus.py is the library to work with! Importing this file makes several problems: >>> Traceback (most recent call last): File "C:\Users\ameise\My Dropbox\µC\AVR\OCTOPUS\octopususb-0.5\demos\python \blink_status.py", line 8, in <module> from octopus import * File "C:\Python26\lib\octopus.py", line 7, in <module> import _octopus ImportError: DLL load failed: module not found. and here´s the related line 7 : import _octopus So there´s a problem considering the .so file! What could be my next step? I know that´s a lot of confusing stuff but I hope anyone of you could bring some light in my mind! thy in advance

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• Http Modules are called on every request when using mvc/routing module

  - by MartinF

  I am developing a http module that hooks into the FormsAuthentication Module through the Authenticate event. While debugging i noticed that the module (and all other modules registered) gets hit every single time the client requests a resource (also when it requests images, stylesheets, javascript files (etc.)). This happens both when running on a IIS 7 server in integrated pipeline mode, and debugging through the webdev server (in non- integrated pipeline mode) As i am developing a website with a lot images which usually wont be cached by the client browser it will hit the modules a lot of unnessecary times. I am using MVC and its routing mechanishm (System.Web.Routing.UrlRoutingModule). When creating a new website the runAllManagedModulesForAllRequests attribute for the IIS 7 (system.webServer) section is per default set to true in the web.config, which as the name indicates make it call all modules for every single request. If i set the runAllManagedModulesForAllRequests attribute to false, no modules will get called. It seems that the reason for this is because of the routing module or mvc (dont know excactly why), which causes that the asp.net (aspx) handler never gets called and therefore the events and the modules never gets called (one time only like supposed). I tested this by trying to call "mydomain.com/Default.aspx" instead of just "mydomain.com/" and correctly it calls the modules only once like it is supposed. How do i fix this so it only calls the modules once when the page is requested and not also when all other resources are requested ? Is there some way i can register that all requests should fire the asp.net (aspx) handler, except requests for specific filetype extensions ? Of course that wont fix the problem if i choose to go with urls like /content/images/myimage123 for the images (without the extension). But i cant think of any other way to fix it. Is there a better way to solve this problem ? I have tried to set up an ignoreRoute like this routes.IgnoreRoute("content/{*pathInfo}"); where the content folder contains all the images, javascripts and stylesheets in seperat subfolders, but it doesnt seem to change anything. I can see there a many different possibilites when setting up a handler but I cant seem to figure out how it should be possible to setup one that will make it possible to use the routing module and have urls like /blog/post123 and not call the modules when requesting images, javascripts and stylesheets (etc.). Hope anyone out there can help me ? Martin

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• Jquery Tools Overlay call on javascript function

  - by user342944

  Hi Guys, I have a jquery overlay window in my html alongwith a button to activate here is the code. <!-- Validation Overlay Box --> <div class="modal" id="yesno" style="top: 100px; left: 320px; position: relative; display: none; z-index: 0; margin-top: 100px;"> <h2> &nbsp;&nbsp;Authentication Failed</h2> <p style="font-family:Arial; font-size:small; text-align:center"> Ether your username or password has been entered incorrectly. Please make sure that your username or password entered correctly... </p> <!-- yes/no buttons --> <p align="center"> <button class="close"> OK </button> </p> </div> Here is the Jquery tools Script <SCRIPT> $(document).ready(function() { var triggers = $(".modalInput").overlay({ // some mask tweaks suitable for modal dialogs mask: { color: '#a2a2a2', loadSpeed: 200, opacity: 0.9 }, closeOnClick: false }); var buttons = $("#yesno button").click(function(e) { // get user input var yes = buttons.index(this) === 0; // do something with the answer triggers.eq(0).html("You clicked " + (yes ? "yes" : "no")); }); $("#prompt form").submit(function(e) { // close the overlay triggers.eq(1).overlay().close(); // get user input var input = $("input", this).val(); // do something with the answer triggers.eq(1).html(input); // do not submit the form return e.preventDefault(); }); }); And here how its called upon clicking on a button or a hyperlink "<BUTTON class="modalInput" rel="#yesno">You clicked no</BUTTON>" All i want is I dont want to show the overlay on clicking on button or through a link. Is it possible to call it through a javascript function like "showOverlay()" ??

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• Converting to async,await using async targeting package

  - by e4rthdog

  I have this: private void BtnCheckClick(object sender, EventArgs e) { var a = txtLot.Text; var b = cmbMcu.SelectedItem.ToString(); var c = cmbLocn.SelectedItem.ToString(); btnCheck.BackColor = Color.Red; var task = Task.Factory.StartNew(() => Dal.GetLotAvailabilityF41021(a, b, c)); task.ContinueWith(t => { btnCheck.BackColor = Color.Transparent; lblDescriptionValue.Text = t.Result.Description; lblItemCodeValue.Text = t.Result.Code; lblQuantityValue.Text = t.Result.AvailableQuantity.ToString(); },TaskScheduler .FromCurrentSynchronizationContext() ); LotFocus(true); } and i followed J. Skeet's advice to move into async,await in my .NET 4.0 app. I converted into this: private async void BtnCheckClick(object sender, EventArgs e) { var a = txtLot.Text; var b = cmbMcu.SelectedItem.ToString(); var c = cmbLocn.SelectedItem.ToString(); btnCheck.BackColor = Color.Red; JDEItemLotAvailability itm = await Task.Factory.StartNew(() => Dal.GetLotAvailabilityF41021(a, b, c)); btnCheck.BackColor = Color.Transparent; lblDescriptionValue.Text = itm.Description; lblItemCodeValue.Text = itm.Code; lblQuantityValue.Text = itm.AvailableQuantity.ToString(); LotFocus(true); } It works fine. What confuses me is that i could do it without using Task but just the method of my Dal. But that means that i must have modified my Dal method, which is something i dont want? I would appreciate if someone would explain to me in "plain" words if what i did is optimal or not and why. Thanks P.s. My dal method public bool CheckLotExistF41021(string _lot, string _mcu, string _locn) { using (OleDbConnection con = new OleDbConnection(this.conString)) { OleDbCommand cmd = new OleDbCommand(); cmd.CommandText = "select lilotn from proddta.f41021 " + "where lilotn = ? and trim(limcu) = ? and lilocn= ?"; cmd.Parameters.AddWithValue("@lotn", _lot); cmd.Parameters.AddWithValue("@mcu", _mcu); cmd.Parameters.AddWithValue("@locn", _locn); cmd.Connection = con; con.Open(); OleDbDataReader rdr = cmd.ExecuteReader(); bool _retval = rdr.HasRows; rdr.Close(); con.Close(); return _retval; } }

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• SQL Server stored procedures - update column based on variable name..?

  - by ClarkeyBoy

  Hi, I have a data driven site with many stored procedures. What I want to eventually be able to do is to say something like: For Each @variable in sproc inputs UPDATE @TableName SET @variable.toString = @variable Next I would like it to be able to accept any number of arguments. It will basically loop through all of the inputs and update the column with the name of the variable with the value of the variable - for example column "Name" would be updated with the value of @Name. I would like to basically have one stored procedure for updating and one for creating. However to do this I will need to be able to convert the actual name of a variable, not the value, to a string. Question 1: Is it possible to do this in T-SQL, and if so how? Question 2: Are there any major drawbacks to using something like this (like performance or CPU usage)? I know if a value is not valid then it will only prevent the update involving that variable and any subsequent ones, but all the data is validated in the vb.net code anyway so will always be valid on submitting to the database, and I will ensure that only variables where the column exists are able to be submitted. Many thanks in advance, Regards, Richard Clarke Edit: I know about using SQL strings and the risk of SQL injection attacks - I studied this a bit in my dissertation a few weeks ago. Basically the website uses an object oriented architecture. There are many classes - for example Product - which have many "Attributes" (I created my own class called Attribute, which has properties such as DataField, Name and Value where DataField is used to get or update data, Name is displayed on the administration frontend when creating or updating a Product and the Value, which may be displayed on the customer frontend, is set by the administrator. DataField is the field I will be using in the "UPDATE Blah SET @Field = @Value". I know this is probably confusing but its really complicated to explain - I have a really good understanding of the entire system in my head but I cant put it into words easily. Basically the structure is set up such that no user will be able to change the value of DataField or Name, but they can change Value. I think if I were to use dynamic parameterised SQL strings there will therefore be no risk of SQL injection attacks. I mean basically loop through all the attributes so that it ends up like: UPDATE Products SET [Name] = '@Name', Description = '@Description', Display = @Display Then loop through all the attributes again and add the parameter values - this will have the same effect as using stored procedures, right?? I dont mind adding to the page load time since this is mainly going to affect the administration frontend, and will marginly affect the customer frontend.

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• CSS selectors : should I make my CSS easier to read or optimise the speed

  - by Laurent Bourgault-Roy

  As I was working on a small website, I decided to use the PageSpeed extension to check if their was some improvement I could do to make the site load faster. However I was quite surprise when it told me that my use of CSS selector was "inefficient". I was always told that you should keep the usage of the class attribute in the HTML to a minimum, but if I understand correctly what PageSpeed tell me, it's much more efficient for the browser to match directly against a class name. It make sense to me, but it also mean that I need to put more CSS classes in my HTML. It make my .css file harder to read. I usually tend to mark my CSS like this : #mainContent p.productDescription em.priceTag { ... } Which make it easy to read : I know this will affect the main content and that it affect something in a paragraph tag (so I wont start to put all sort of layout code in it) that describe a product and its something that need emphasis. However it seem I should rewrite it as .priceTag { ... } Which remove all context information about the style. And if I want to use differently formatted price tag (for example, one in a list on the sidebar and one in a paragraph), I need to use something like that .paragraphPriceTag { ... } .listPriceTag { ... } Which really annoy me since I seem to duplicate the semantic of the HTML in my classes. And that mean I can't put common style in an unqualified .priceTag { ... } and thus I need to replicate the style in both CSS rule, making it harder to make change. (Altough for that I could use multiple class selector, but IE6 dont support them) I believe making code harder to read for the sake of speed has never been really considered a very good practice . Except where it is critical, of course. This is why people use PHP/Ruby/C# etc. instead of C/assembly to code their site. It's easier to write and debug. So I was wondering if I should stick with few CSS classes and complex selector or if I should go the optimisation route and remove my fancy CSS selectors for the sake of speed? Does PageSpeed make over the top recommandation? On most modern computer, will it even make a difference?

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• Activate a (COM Interop based) ActiveX contol using registration free com

  - by embnut

  I have a (COM Interop based) ActiveX contol that I am trying to use with registration free com. When the control loads the control is inactive (does not responds to events, control not fully rendered etc). After much search I discovered that COM objects using reg-free-com use the miscStatus attribute to set the initial state to get correctly activated. I know how to use it with a comClass which corresponds to a native COM Object. 1) What is the equivalent of the following for clrClass element which corresponds to a COM-interop object? <comClass clsid="{qqqqqqqq-wwww-eeee-rrrr-00C0F0283628}" tlbid="{xxxxxxxx-yyyy-zzzz-aaaa-0000F8754DA1}" threadingModel="Both" progid="SomeCompany.SomeOleControl" description="Some ActiveX Control" miscStatus="recomposeonresize,insideout,activatewhenvisible,nouiactivate" > 2) The COM client I am using is Visual FoxPro. If the (1) is not possible what can I do in VFP to activate the inactive ActiveX control. (I dont mind VB or C# input too if I can use it to find the equivalent foxpro) Currently I tried the following this.AddObject('OleControl1', 'oleControl', 'SomeCompany.SomeOleControl') this.OleControl1.AutoActivate = 3 this.OleControl1.Visible = .T. this.OleControl1.SetFocus But I the OleControl1 gets focus before passing events like mouse click to its subelements. So I have to click twice on it to do the necessary action, any time it does not have focus. I would like the control to act as if the "nouiactivate" of the miscStatus value is set. 3) Is there any other way of accomplishing what I want to do? Hans Passant, here is the listing of current Assembly.dll.manifest. The formatting in the comment made it unreadable. <?xml version="1.0" encoding="UTF-8" standalone="yes"?> <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> <assemblyIdentity name="Assembly" version="1.0.0.0" type="win32" publicKeyToken="wwwwwwwwwwwwwwww"/> <clrClass name="SomeCompany.SomeOleControl" clsid="{qqqqqqqq-wwww-eeee-rrrr-00C0F0283628}" progid="SomeCompany.SomeOleControl" threadingModel="Both"/> <file name="Assembly.tlb"> <typelib tlbid="{xxxxxxxx-yyyy-zzzz-aaaa-0000F8754DA1}" version="1.0" helpdir="" flags="hasdiskimage"/> </file> </assembly>

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• Eclipselink read complex oject model in an ordered way

  - by Raven

  Hi, I need to read a complex model in an ordered way with eclipselink. The order is mandantory because it is a huge database and I want to have an output of a small portion of the database in a jface tableview. Trying to reorder it in the loading/quering thread takes too long and ordering it in the LabelProvider blocks the UI thread too much time, so I thought if Eclipselink could be used that way, that the database will order it, it might give me the performance I need. Unfortunately the object model can not be changed :-( The model is something like: @SuppressWarnings("serial") @Entity public class Thing implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; @OneToMany(cascade=CascadeType.ALL) @PrivateOwned private List<Property> properties = new ArrayList<Property>(); ... // getter and setter following here } public class Property implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; @OneToOne private Item item; private String value; ... // getter and setter following here } public class Item implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private int id; private String name; .... // getter and setter following here } // Code end In the table view the y-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Thing m ORDER BY m.name ASC"); using the "name" attribute from the Thing objects as label. In the table view the x-axis is more or less created with the query Query q = em.createQuery("SELECT m FROM Item m ORDER BY m.name ASC"); using the "name" attribute from the Item objects as label. Each cell has the value Things.getProperties().get[x].getValue() Unfortunately the list "properties" is not ordered, so the combination of cell value and x-axis column number (x) is not necessarily correct. Therefore I need to order the list "properties" in the same way as I ordered the labeling of the x-axis. And exactly this is the thing I dont know how it is done. So querying for the Thing objects should return the list "properties" "ORDER BY name ASC" but of the "Item"s objects. My ideas are something like having a query with two JOINs. Joing Things with Property and with Item but somehow I was unable to get it to work yet. Thank you for your help and your ideas to solve this riddle.

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• setting ruby hash .default to a list

  - by matpalm

  i thought i understood what the default method does to a hash... give a default value for a key if it doesn't exist irb(main):001:0> a = {} => {} irb(main):002:0> a.default = 4 => 4 irb(main):003:0> a[8] => 4 irb(main):004:0> a[9] += 1 => 5 irb(main):005:0> a => {9=>5} all good. but if i set the default to be a empty list, or empty hash, i dont understand it's behaviour at all.... irb(main):001:0> a = {} => {} irb(main):002:0> a.default = [] => [] irb(main):003:0> a[8] << 9 => [9] # great! irb(main):004:0> a => {} # ?! would have expected {8=>[9]} irb(main):005:0> a[8] => [8] # awesome! irb(main):006:0> a[9] => [9] # unawesome! shouldn't this be [] ?? i was hoping / expecting the same behaviour as if i had used the ||= operator... irb(main):001:0> a = {} => {} irb(main):002:0> a[8] ||= [] => [] irb(main):003:0> a[8] << 9 => [9] irb(main):004:0> a => {8=>[9]} irb(main):005:0> a[9] => nil can anyone explain what is going on ???

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• Unselect Databound Combobox Winforms .NET

  - by joedotnot

  The problem: combobox is databound to a DataView, first item in the dataview is DataRowView whose fields are DBNull.Value; Combo DropdownStyle = ComboBoxStyle.DropDownList Loads fine, displays fine, selects fine, problem is to Unselect via code. Setting the SelectedIndex to 0 throws an exception. (Setting to -1 is a no-no as per msdn doco that says dont set SelectedIndex=-1 if databound) So how to unselect without throwing an exception ? For now i wrapped it into a try/catch to just ignore the error! EDIT: As asked by Hubeza, i worked on sample code to post. Did a stripped down version of the original code in C# (original is in VB.NET) and could NOT reproduce it either. Converted to VB.NET and could NOT reproduce it either ! In other words, SelectedIndex = 0 does work in the stripped down version! Currently further investigating what else could be wrong with the original code. EDIT2: Case Closed. Call me a stupid fool if you like, and apologies for wasting anyone's time - The error was originating from MyComboBox_SelectedIndexChanged event, which i neglected to check ! May as well post the sample in case anyone finds useful. private void LoadComboMethod() { DataTable dtFruit = new DataTable("FruitTable"); //define columns DataColumn colID = new DataColumn(); colID.DataType = typeof(Int32); //VB.NET GetType(Int32) colID.ColumnName = "ID"; DataColumn colDesc = new DataColumn(); colDesc.DataType = typeof(String); colDesc.ColumnName = "Description"; //add columns to table dtFruit.Columns.AddRange(new DataColumn[] { colID, colDesc }); //add rows DataRow row = dtFruit.NewRow(); row[colID] = 1; row[colDesc] = "Apples"; dtFruit.Rows.Add(row); row = dtFruit.NewRow(); row[colID] = 1; row[colDesc] = "Bananas"; dtFruit.Rows.Add(row); row = dtFruit.NewRow(); row[colID] = 1; row[colDesc] = "Oranges"; dtFruit.Rows.Add(row); //add extra blank row. DataRowView drv = dtFruit.DefaultView.AddNew(); drv.EndEdit(); //Bind combo box DataView dv = new DataView(dtFruit); dv.Sort = "ID ASC"; //ensure blank item on top cboFruit.DataSource = dv; cboFruit.DisplayMember = "Description"; cboFruit.ValueMember = "ID"; } private void UnselectComboMethod() { if (cboFruit.SelectedIndex > 0) { cboFruit.SelectedIndex = 0; } else { MessageBox.Show("no fruit selected"); } }

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• integriting facebook login button with Facebooker (rails plugin)

  - by dexterdeng

  I was integriting login-button with Facebooker, as I wanted to use facepile and customise the facebook login button, so I have to use facebook js sdk. I used the facebooker to connect facebook. now I found a issue. window.fbAsyncInit = function() { FB.init({ appId: '<%=Facebooker.api_key%>', status: true, cookie: true, xfbml: true }); }; (function() { var e = document.createElement('script'); e.type = 'text/javascript'; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; e.async = true; document.getElementById('fb-root').appendChild(e); }()); function fblogin(){ var pearms = "email,user_birthday,friends_location,offline_access,publish_stream,read_friendlists,user_birthday,user_location"; FB.getLoginStatus(function(response) { if (response.session) { // logged in and connected user, someone you know window.location = "http://domain/account/link_user_accounts"; return true; } else { // no user session available, someone you dont know FB.login(function(response) { if (response.session) { if (response.perms) { // after logged in the facebook account. $.inspect(response.perms);//return all these perms I expected. it should be fine there. window.location = "http://domain/account/link_user_accounts"; } return true; } else { return false; } },"email,user_birthday,friends_location,offline_access,publish_stream,read_friendlists"); } }) }; Let's say if the api_key is "1111111111". take a look at this line: " ` if (response.session) { if (response.perms) { $.inspect(response.perms); " now I was trying to login , call fblogin() , I'm sure that the response.perms equal to the perms I expected. (btw, at that time, I have a facebook plugin named facepile works too, it showed my friends after I called fblogin() and connected to facebook by typing my email and password ). so now it should run window.location = "http://domain/account/link_user_accounts"; yes, this line run. but the facebook_session can't build successfully. after digging the facebooker's code, I found this from the rails plugin facebooker: def create_facebook_session secure_with_facebook_params! || secure_with_cookies! || secure_with_token! end mostly, it would run secure_with_cookies! , and if the cookies with keys as "fbs_#{Facebooker.api_key}","#{Facebooker.api_key}_ss", "#{Facebooker.api_key}_session_key",.. created, then the facebook_session can be created. but these cookies can't be created after I logged in facebook until I refresh the current page by hand . I noticed if I refresh the page, the cookies with these keys added to the browser. but why they can't be added after I logged in facebook at once? I need these keys to create facebook_session. did I forgot something excepted these code I pasted? anybody help? thank you very much!

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• Linq to SQL Repository ~theory~ - Generic but now uses Linq to Objects?

  - by Matt Tolliday

  The project I am currently working on used Linq to SQL as an ORM data access technology. Its an MVC3 Web app. The problem I faced was primarily due to the inability to mock (for testing) the DataContext which gets autogenerated by the DBML designer. So to solve this issue (after much reading) I refactored the repository system which was in place - single repository with seperate and duplicated access methods for each table which ended up with something like 300 methods only 10 of which were unique - into a single repository with generic methods taking the table and returning more generic types to the upper reaches of the application. My question revolves more around the design I've used to get thus far and the differences I'm noticing in the structure of the app. 1) Having refactored the code from the dark ages which used classic Linq to SQL queries: public Billing GetBilling(int id) { var result = ( from bil in _bicDc.Billings where bil.BillingId == id select bil).SingleOrDefault(); return (result); } it now looks like: public T GetRecordWhere<T>(Expression<Func<T, bool>> predicate) where T : class { T result; try { result = _dataContext.GetTable<T>().Where(predicate).SingleOrDefault(); } catch (Exception ex) { throw ex; } return result; } and is used by the controller with a query along the lines of: _repository.GetRecordWhere<Billing>(x => x.BillingId == 1); which is fine, and precisely what I wanted to achieve. ...however.... I'm also having to do the following to get precisely the result set i require in the controller class (the highest point of the app in essence)... viewModel.RecentRequests = _model.GetAllRecordsWhere<Billing>(x => x.BillingId == 1) .Where(x => x.BillingId == Convert.ToInt32(BillingType.Submitted)) .OrderByDescending(x => x.DateCreated). Take(5).ToList(); This - as far as my understanding is correct - is now using Linq to Objects rather than the Linq to SQL queries I was previously? Is this okay practise? It feels wrong to me but I dont know why. Probably because the logic of the queries is in the very highest tier of the app, rather than the lowest, but... I defer to you good people for advice. One of the issues I considered was bringing the entire table into memory but I understand that using the Iqeryable return type the where clause is taken to the database and evaluated there. Thus returning only the resultset i require... i may be wrong. And if you've made it this far, well done. Thank you, and if you have any advice it is very much appreciated!!

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• Computation on db data then list them using either SimpleCursorAdapter or ArrayAdapter

  - by kc2uno

  Hi all, I juststarted programming in android a few weeks ago, so I am not entirely sure how to deal with listing values. Please help me out! I have some questions regarding displaying data sets from db in a list. Currently I have a cursor returned by my db points to a list of rows and I want display 2 columns values in a single row of the list. The row xml looks like this: <TextView android:id="@+id/text1" android:textSize="16sp" android:textStyle="bold" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <TextView android:id="@+id/text2" android:textSize="14sp" android:layout_width="fill_parent" android:layout_height="wrap_content"/> so I was thinking using simplecursoradapter which supposedly makes my life easier by displaying the data in a list. However that is only true if I want to display the raw data. For the purpose of my program I need to do some computations on the raw data sets, then display them. I am not sure how to do that using SimpleCursorAdapter. Here's how I display the raw data: String[] from = new String[]{BtDbAdapter.KEY_EX_TYPE,BtDbAdapter.KEY_EX_TIMESTAMP}; int[] to = new int[]{R.id.text1, R.id.text2}; // Now create a simple cursor adapter and set it to display SimpleCursorAdapter records = new SimpleCursorAdapter(this, R.layout.exset_row, mExsetCursor, from, to); setListAdapter(records); Is there a way to do computation on the data in those rows before I bind it with the SimpleCursorAdapter? I was trying to use an alternative way of doing this by using arraylist and arrayadapter, but that way I dont know to how achieve displaying 2 items in a single row. This is my code for using arrayadapter which only display 1 text in a row instead of 2 textviews in a row: //fill in the array timestamp_arr = new ArrayList<String>(); type_arr = new ArrayList<String>(); fillRecord(); Log.d(TAG,"setting now in recordlist"); setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item,timestamp_arr)); setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item2,type_arr)); It's very obvious that it only displays one textview in a row because I set the second arrayadapter overwrites the first one! I was trying to use R.id.text1 and R.id.text2 for them, but it gave me some errors saying 04-23 01:40:58.658: ERROR/AndroidRuntime(3309): android.content.res.Resources$NotFoundException: Resource ID #0x7f070008 type #0x12 is not valid I believe the second method can achieve this, but I'm not sure how do deal with the layout problems, so if you any suggestions, please post them out. Thank you!!

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• sorting hashes inside an array on values

  - by srk

  @aoh =( { 3 => 15, 4 => 8, 5 => 9, }, { 3 => 11, 4 => 25, 5 => 6, }, { 3 => 5, 4 => 18, 5 => 5, }, { 0 => 16, 1 => 11, 2 => 7, }, { 0 => 21, 1 => 13, 2 => 31, }, { 0 => 11, 1 => 14, 2 => 31, }, ); I want the hashes in each array index sorted in reverse order based on values.. @sorted = sort { ........... please fill this..........} @aoh; expected output @aoh =( { 4 => 8, 5 => 9, 3 => 15, }, { 5 => 6, 3 => 11, 4 => 25, }, { 5 => 5, 3 => 5, 4 => 18, }, { 2 => 7, 1 => 11, 0 => 16, }, { 1 => 13, 0 => 21, 2 => 31, }, { 0 => 11, 1 => 14, 2 => 31, }, ); Please help.. Thanks in advance.. Stating my request again: I only want the hashes in each array index to be sorted by values.. i dont want the array to be sorted..

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• Javascript closures with google geocoder

  - by DaNieL

  Hi all, i still have some problems with javascript closures, and input/output variables. Im playing with google maps api for a no profit project: users will place the marker into a gmap, and I have to save the locality (with coordinates) in my db. The problem comes when i need to do a second geocode in order to get a unique pairs of lat and lng for a location: lets say two users place the marker in the same town but in different places, I dont want to have the same locality twice in the database with differents coords. I know i can do the second geocode after the user select the locality, but i want to understand what am i mistaking here: // First geocoding, take the marker coords to get locality. geocoder.geocode( { 'latLng': new google.maps.LatLng($("#lat").val(), $("#lng").val()), 'language': 'it' }, function(results_1, status_1){ // initialize the html var inside this closure var html = ''; if(status_1 == google.maps.GeocoderStatus.OK) { // do stuff here for(i = 0, geolen = results_1[0].address_components.length; i != geolen) { // Second type of geocoding: for each location from the first geocoding, // i want to have a unique [lat,lan] geocoder.geocode( { 'address': results_1[0].address_components[i].long_name }, function(results_2, status_2){ // Here come the problem. I need to have the long_name here, and // 'html' var should increment. coords = results_2[0].geometry.location.toUrlValue(); html += 'some html to let the user choose the locality'; } ); } // Finally, insert the 'html' variable value into my dom... //but it never gets updated! } else { alert("Error from google geocoder:" + status_1) } } ); I tryed with: // Second type of geocoding: for each location from the first geocoding, i want // to have a unique [lat,lan] geocoder.geocode( { 'address': results_1[0].address_components[i].long_name }, (function(results_2, status_2, long_name){ // But in this way i'll never get results_2 or status_2, well, results_2 // get long_name value, status_2 and long_name is undefined. // However, html var is correctly updated. coords = results_2[0].geometry.location.toUrlValue(); html += 'some html to let the user choose the locality'; })(results_1[0].address_components[i].long_name) ); And with: // Second type of geocoding: for each location from the first geocoding, i want to have // a unique [lat,lan] geocoder.geocode( { 'address': results_1[0].address_components[i].long_name }, (function(results_2, status_2, long_name){ // But i get an obvious "results_2 is not defined" error (same for status_2). coords = results_2[0].geometry.location.toUrlValue(); html += 'some html to let the user choose the locality, that can be more than one'; })(results_2, status_2, results_1[0].address_components[i].long_name) ); Any suggestion? EDIT: My problem is how to pass an additional arguments to the geocoder inner function: function(results_2, status_2, long_name){ //[...] } becose if i do that with a clousure, I mess with the original parameters (results_2 and status_2)

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• i want to have some cross browser consistency on my fieldsets, do you know how can i do it?

  - by Omar

  i have this problem with fieldsets... have a look at http://i.imgur.com/IRrXB.png is it possible to achieve what i want with css??? believe me, i tried! as you can see on the img, i just want the look of the legend to be consistent across browsers, i want it to use the width of the fieldset no more (like chrome and ie) no less (like firefox), dont worry about the rounded corners and other issues, thats taken care of. heres the the core i'm using. CSS <style type="text/css"> fieldset {margin: 0 0 10px 0;padding: 0; border:1px solid silver; background-color: #f9f9f9; -moz-border-radius:5px; -webkit-border-radius:5px; border-radius:5px} fieldset p{clear:both;margin:.3em 0;overflow:hidden;} fieldset label{float:left;width:140px;display:block;text-align:right;padding-right:8px;margin-right: 2px;color: #4a4a4a;} fieldset input, fieldset textarea {margin:0;border:1px solid #ddd;padding:3px 5px 3px 5px;} fieldset legend { background: #C6D1E8; position:relative; left: -1px; margin: 0; width: 100%; padding: 0px 5px; font-size: 1.11em; font-weight: bold; text-align:left; border: 1px solid silver; -webkit-border-top-left-radius: 5px; -webkit-border-top-right-radius: 5px; -moz-border-radius-topleft: 5px; -moz-border-radius-topright: 3px; border-top-left-radius: 5px; border-top-right-radius: 5px; } #md {width: 400px;} </style> HTML <div id="md"> <fieldset> <legend>some title</legend> <p> <label>Login</label> <input type="text" /> </p> <p> <label>Password</label> <input type="text" /> </p> <p><label>&nbsp;</label> <input type="submit"> </p> </fieldset> </div>

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• My listview is not gaining the keyboard focus in Qt

  - by Solitaire

  Hi, i am trying to operate the listview itesm through keyboard focus, its not moving.. can you folks suggest where i am wrong. if i click on the listview from mouse, listview is gaining the focus. i dont no what is wrong. #include <QtGui> #include <QApplication> class Newlist : public QListView { public: Newlist(QWidget *parent = 0); ~Newlist(){}; public: QListView *list; QStringListModel *model; }; Newlist::Newlist(QWidget *parent) : QListView(parent) { list = new QListView(this); list->setViewMode(QListView::ListMode); list->setSelectionMode(QAbstractItemView::SingleSelection); list->setMinimumSize(300,500); model = new QStringListModel(this); QStringList strlist; strlist<<"Test"<<"fest"<<"mest"; list->setModel(model); model->setStringList(strlist); QModelIndex index = model->index(1,0); list->setCurrentIndex(index); QVBoxLayout *layout = new QVBoxLayout(this); layout->addWidget(list); setLayout(layout); list->setFocus(); } class Test : public QMainWindow { public: Test(QWidget *parent = 0); ~Test(){}; private: Mylistview *newlist; QVBoxLayout *layout; }; Test::Test(QWidget *parent) : QMainWindow(parent) { layout = new QVBoxLayout(); newlist = new Mylistview(); this->setCentralWidget(newlist); } int main(int argc, char *argv[]) { QApplication a(argc, argv); Test test; test.showMaximized(); return a.exec(); } Thanks in advance

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• Oracle Schema Design: Seperate Schema with I/O Overhead?

  - by Guru

  We are designing database schema for a new system based on Oracle 11gR1. We have identified a main schema which would have close to 100 tables, these will be accessed from the front end Java application. We have a requirement to audit the values which got changed in close to 50 tables, this has to be done every row. Which means, it is possible that, for a single row in MYSYS.T1 there might be 50 (or more) rows in MYSYS_AUDIT.T1_AUD table. We might be having old values of every column entry and new values available from T1. DBA gave an observation, advising against this method, because he said, separate schema meant an extra I/O for every operation. Basically AUDIT schema would be used only to do some analyse and enter values (thus SELECT and INSERT). Is it true that, "a separate schema means an extra I/O" ? I could not find justification. It appears logical to me, as the AUDIT data should not be tampered with, so a separate schema. Also, we designed a separate schema for archiving some tables from MYSYS. From MYSYS_ARC the table might be backed up into tapes or deleted after sufficient time. Few stats: Few tables (close to 20, 30) in MYSYS schema could grow to around 50M rows. We have asked for a total disk space of 4 TB. MYSYS_AUDIT schema might be having 10 times that of MYSYS but we wont keep them more than 3 months. Questions Given all these, can you suggest me any improvements? Separate schema affects disc I/O? (one extra I/O for every schema ?) Any general suggestions? Figure: +-------------------+ +-------------------+ | MYSYS | | MYSYS_AUDIT | | | | | | 1. T1 | | 1. T1_AUD | | 2. T2 | | 2. T2_AUD | | 3. T3 |--------->| 3. T3_AUD | | 4. T4 |(SELECT, | 4. T4_AUD | | . | INSERT) | . | | . | | . | | . | | . | | 100. T100 | | 50. T50_AUD | +-------------------+ +-------------------+ | | | | |(INSERT) | | | * +-------------------+ | MYSYS_ARC | | | | 1. T1_ARC | | 2. T2_ARC | | 3. T3_ARC | | 4. T4_ARC | | . | | . | | . | | 100. T100_ARC | +-------------------+ Apart from this, we have two more schemas with only read only rights, but mainly they are for adhoc purpose and we dont mind the performance on them.

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• NHibernate - I have many, but I only want one!

  - by MartinF

  Hello, I have a User which can have many Emails. This is mapped through a List collection (exposed by IEnumerable Emails on the User). For each User one of the Emails will be the Primary one ("Boolean IsPrimary" property on Email). How can I get the primary Email from User without NHibernate loads every email for the User ? I have the following two entities, with a corresponding table for each public class User { public virtual int Id { get; set; } public virtual IEnumerable<Email> Emails { get; set; } // public virtual Email PrimaryEmail { get; set; } - Possible somehow ? } public class Email { public virtual int Id { get; set; } public virtual String Address { get; set; } public virtual Boolean IsPrimary { get; set; } public virtual User User { get; set; } } Can I map a "Email PrimaryEmail" property etc. on the User to the Email which have "IsPrimary=1" set somehow ? Maybe using a Sql Formula ? a View ? a One-To-One relationship ? or another way ? It should be possible to change the primary email to be one of the other emails, so i would like to keep them all in 1 table and just change the IsPrimary property. Using a Sql Formula, is it be possible to keep the "PrimaryEmail" property on the User up-to-date, if I set the IsPrimary property on the current primary email to false, and then afterwards set the PrimaryEmail property to the email which should be the new primary email and set IsPrimary to true ? Will NHibernate track changes on the "old/current" primary Email loaded by the Sql Formula ? What about the 1 level cache and the 2 level cache when using SqlFormula ? I dont know if it could work by using a View ? Then i guess the Email could be mapped like a Component ? Will it work when updating the Email data when loaded from the View ? Is there a better way ? As I have a bi-directional relationship between User and Email I could in many cases of course query the primary Email and then use the "User" property on the Email to get the User (instead of the other way around - going from User to the primary Email) Hope someone can help ?

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• How to design this ?

  - by Akku

  how can i make this entire process as 1 single event??? http://code.google.com/apis/visualization/documentation/dev/dsl_get_started.html and draw the chart on single click? I am new to servlets please guide me When a user clicks the "go " button with some input. The data goes to the servlet say "Test3". The servlet processes the data by the user and generates/feeds the data table dynamically Then I call the html page to draw the chart as shown in the tutorial link above. The problem is when I call the servlet it gives me a long json string in the browser as given in the tutorials "google.visualization.Query.setResponse({version:'0.6',status:'ok',sig:'1333639331',table:{cols:[{............................" Then when i manually call the html page to draw the chart i am see the chart. But when I call html page directly using the request dispatcher via the servlet I dont get the result. This is my code and o/p...... I need sugession as to how should be my approach to call the chart public class Test3 extends HttpServlet implements DataTableGenerator { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { DataSourceHelper.executeDataSourceServletFlow(request, response, this , isRestrictedAccessMode() ); RequestDispatcher rd; rd = request.getRequestDispatcher("new.html");// it call's the html page which draws the chart as per the data added by the servlet..... rd.include(request, response);//forward(request, response); @Override public Capabilities getCapabilities() { return Capabilities.NONE; } protected boolean isRestrictedAccessMode() { return false; } @Override public DataTable generateDataTable(Query query, HttpServletRequest request) { // Create a data table. DataTable data = new DataTable(); ArrayList<ColumnDescription> cd = new ArrayList<ColumnDescription>(); cd.add(new ColumnDescription("name", ValueType.TEXT, "Animal name")); cd.add......... I get the following result along with unprocessed html page google.visualization.Query.setResponse({version:'0.6',statu..... <html> <head> <title>Getting Started Example</title> .... Entire html page as it is on the Browser. What I need is when a user clicks the go button the servlet should process the data and call the html page to draw the chart....Without the json string appearing on the browser.(all in one user click) What should be my approach or how should i design this.... there are no error in the code. since when i run the servlet i get the json string on the browser and then when i run the html page manually i get the chart drawn. So how can I do (servlet processing + html page drawing chart as final result) at one go without the long json string appearing on the browser. There is no problem with the html code....

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• The iPhone “phone” doesn’t have the provisioning profile with which the application was signed.

  - by eda

  i have tried everything to fix this provision problem and nothing is working. ive reformated my mac, reinstalled the iphone, ive also dragged the provisions (developer and distribution) onto the organizer, itunes, and xcode. in itunes people say to drag the provisions to the iphone icon but that doesnt work its only able to go under library it shows a blue rectangle for me to drop it there. i just have a newly created dummy app with a 57x57 icon. ive also setup the project with the distribution thing with its distribution provision. when i build i get this: The iPhone “myphone” doesn’t have the provisioning profile with which the application was signed. Click “Install and Run” to install the provisioning profile “distribution” on “myphone” and continue running “helloworld.app”. and it has a button "install and run" ive clicked on that hundreths of times and nothing. in orgranizer i see a tab called console ive cleared it and rebuild the app and there is some output that i dont understand. I'm thinking its my problem whats it mean? Fri Mar 26 11:22:19 unknown misagent[215] <Error>: profile not valid: 0xe8008012 Fri Mar 26 11:22:19 unknown mobile_installationd[206] <Error>: 00808600 install_embedded_profile: Skipping the installation of the embedded profile Fri Mar 26 11:22:20 unknown mobile_installationd[206] <Error>: 00808600 verify_executable: Could not validate signature: e8008015 Fri Mar 26 11:22:20 unknown mobile_installationd[206] <Error>: 00808600 preflight_application_install: Could not verify /var/tmp/install_staging.NEb61T/helloworld.app/helloworld Fri Mar 26 11:22:20 unknown mobile_installationd[206] <Error>: 00808600 install_application: Could not preflight application install Fri Mar 26 11:22:20 unknown mobile_installation_proxy[219] <Error>: handle_install: Installation failed Fri Mar 26 11:22:20 unknown mobile_installationd[206] <Error>: 00808600 handle_install: API failed Fri Mar 26 11:22:20 unknown mobile_installationd[206] <Error>: 00808600 send_message: failed to send mach message of 64 bytes: 10000003 Fri Mar 26 11:22:20 unknown mobile_installationd[206] <Error>: 00808600 send_error: Could not send error response to client Fri Mar 26 11:22:42 unknown misagent[231] <Error>: profile not valid: 0xe8008012 Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 install_embedded_profile: Skipping the installation of the embedded profile Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 verify_executable: Could not validate signature: e8008015 Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 preflight_application_install: Could not verify /var/tmp/install_staging.6M55Ay/helloworld.app/helloworld Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 install_application: Could not preflight application install Fri Mar 26 11:22:43 unknown mobile_installation_proxy[235] <Error>: handle_install: Installation failed Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 handle_install: API failed Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 send_message: failed to send mach message of 64 bytes: 10000003 Fri Mar 26 11:22:43 unknown mobile_installationd[206] <Error>: 00809800 send_error: Could not send error response to client

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• conversion of DNA to Protein - c structure issue

  - by sam

  I am working on conversion of DNA sequence to Protein sequence. I had completed all program only one error I found there is of structure. dna_codon is a structure and I am iterating over it.In first iteration it shows proper values of structure but from next iteration, it dont show the proper value stored in structure. Its a small error so do not think that I havnt done anything and downvote. I am stucked here because I am new in c for structures. CODE : #include <stdio.h> #include<string.h> void main() { int i, len; char short_codons[20]; char short_slc[1000]; char sequence[1000]; struct codons { char amino_acid[20], slc[20], dna_codon[40]; }; struct codons c1 [20]= { {"Isoleucine", "I", "ATT, ATC, ATA"}, {"Leucine", "L", "CTT, CTC, CTA, CTG, TTA, TTG"}, {"Valine", "V", "GTT, GTC, GTA, GTG"}, {"Phenylalanine", "F", "TTT, TTC"}, {"Methionine", "M", "ATG"}, {"Cysteine", "C", "TGT, TGC"}, {"Alanine", "A", "GCT, GCC, GCA, GCG"}, {"Proline", "P", "CCT, CCC, CCA,CCG "}, {"Threonine", "T", "ACT, ACC, ACA, ACG"}, {"Serine", "S", "TCT, TCC, TCA, TCG, AGT, AGC"}, {"Tyrosine", "Y", "TAT, TAC"}, {"Tryptophan", "W", "TGG"}, {"Glutamine", "Q", "CAA, CAG"}, {"Aspargine","N" "AAT, AAC"}, {"Histidine", "H", "CAT, CAC"}, {"Glutamic acid", "E", "GAA, GAG"}, {"Aspartic acid", "D", "GAT, GAC"}, {"Lysine", "K", "AAA, AAG"}, {"Arginine", "R", "CGT, CGC, CGA, CGG, AGA, AGG"}, {"Stop codons", "Stop", "AA, TAG, TGA"} }; int count = 0; printf("Enter the sequence: "); gets(sequence); char *input_string = sequence; char *tmp_str = input_string; int k; char *pch; while (*input_string != '\0') { char string_3l[4] = {'\0'}; strncpy(string_3l, input_string, 3); printf("\n-----------%s & %s----------", string_3l, tmp_str ); for(k=0;k<20;k++) { //printf("@REAL - %s", c1[0].dna_codon); printf("@ %s", c1[k].dna_codon); int x; x = c1[k].dna_codon; pch = strtok(x, ","); while (pch != NULL) { printf("\n%d : %s with %s", k, string_3l, pch); count=strcmp(string_3l, pch); if(count==0) { strcat(short_slc, c1[k].slc); printf("\n==>%s", short_slc); } pch = strtok (NULL, " ,.-"); } } input_string = input_string+3; } printf("\nProtien sequence is : %s\n", short_slc); } INPUT : TAGTAG OUTPUT : If you see output of printf("\n-----------%s & %s----------", string_3l, tmp_str ); in both iterations, we found that values defined in structure are reduced. I want to know why structure reduces it or its my mistake? because I am stucked here

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• javascript problems when generating html reports from within java

  - by posdef

  Hi, I have been working on a Java project in which the reports will be generated in HTML, so I am implementing methods for creating these reports. One important functionality is to be able to have as much info as possible in the tables, but still not clutter too much. In other words the details should be available if the user wishes to take a look at them but not necessarily visible by default. I have done some searching and testing and found an interesting template for hiding/showing content with the use of CSS and javascript, the problem is that when I try the resultant html page the scripts dont work. I am not sure if it's due a problem in Java or in the javascript itself. I have compared the html code that java produces to the source where I found the template, they seem to match pretty well. Below are bits of my java code that generates the javascript and the content, i would greatly appreciate if anyone can point out the possible reasons for this problem: //goes to head private void addShowHideScript() throws IOException{ StringBuilder sb = new StringBuilder(); sb.append("<script type=\"text/javascript\" language=\"JavaScript\">\n"); sb.append("<!--function HideContent(d) {\n"); sb.append("document.getElementById(d).style.display=\"none\";}\n"); sb.append("function ShowContent(d) {\n"); sb.append("document.getElementById(d).style.display=\"block\";}\n"); sb.append("function ReverseDisplay(d) {\n"); sb.append("if(document.getElementById(d).style.display==\"none\")\n"); sb.append("{ document.getElementById(d).style.display=\"block\"; }\n"); sb.append("else { document.getElementById(d).style.display=\"none\"; }\n}\n"); sb.append("//--></script>\n"); out.write(sb.toString()); out.newLine(); } // body private String linkShowHideContent(String pathname, String divname){ StringBuilder sb = new StringBuilder(); sb.append("<a href=\"javascript:ReverseDisplay('"); sb.append(divname); sb.append("')\">"); sb.append(pathname); sb.append("</a>"); return sb.toString(); } // content out.write(linkShowHideContent("hidden content", "ex")); out.write("<div id=\"ex\" style=\"display:block;\">"); out.write("<p>Content goes here.</p></div>");

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• merging UIImagePickerController image with cameraOverlayView

  - by GameDev

  Im really in the need for some help and advice. Spent the last week on this and have now just become frustrated as i cant get it to work! Basically, im trying to merge two images into one image to display/save. First the user picks an image from album, it goes to edit image screen where user can move and scale the image. On this screen is an overlay image (320x480) for the person to align there eyes in. Once aligned I want to save this image (edited and overlay) into one and pass the image onto my next screen. It works fine when the image is filling the edit/crop box, but when the image is widescreen with top and bottom not filling the box, then when i save the image the coords of the overlay dont get saved correctly! Heres my code, ive tried various ways of doing this but have failed at every attempt :( - (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { // Access the cropped image from info dictionary UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"]; // Combine image with overlay before saving!! image = [self addOverlayToImage:image]; overlayGraphicView.image = nil; // Take the picture image to the post picture view controller postPictureView = [[PostPictureViewController alloc] init:image Company:companyName withLink:buyButtonLink]; [picker pushViewController:postPictureView animated:YES]; [picker release],picker = nil; } The problem is that the image picked (originalImage) could be of any height, my overlayImage is however always 320x480, its almost all transparent with just two eye images in center which i want to save over the original images eyes! - (UIImage*) addOverlayToImage:(UIImage*)originalImage { CGRect cgRect =[[UIScreen mainScreen] bounds]; CGSize size = cgRect.size; UIGraphicsBeginImageContext(size); [originalImage drawInRect:CGRectMake(0, 0, size.width, size.height)]; UIImage* overlayImage = [UIImage imageNamed:overlayGraphicName]; [(UIImage *)overlayImage drawInRect:CGRectMake(0, 0, size.width, size.height)]; UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext(); [finalImage retain]; UIGraphicsEndImageContext(); return finalImage; } I wish there was just an easy way to take a screenshot of whatever is in the edit crop box :( Please if someone could help me with this ASAP as I need to finish this in 1-2 days time! Thank you. EDIT:- I should also mention that with this I get the correct center of the screen and placement of the overlay on my next screen: [(UIImage *)overlayImage drawInRect:CGRectMake(0, 0, size.width, size.height)]; However, I am unable to work out the correct position of the main image especially as the height is different for every image if not fullscreen! I tried this to center it into the correct position but it doesnt work: [originalImage drawInRect:CGRectMake(0,(size.height/2 - originalImage.size.height/2), originalImage.size.width, originalImage.size.height)];

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• Observer pattern used with decorator pattern

  - by icelated

  I want to make a program that does an order entry system for beverages. ( i will probably do description, cost) I want to use the Decorator pattern and the observer pattern. I made a UML drawing and saved it as a pic for easy viewing. This site wont let me upload as a word doc so i have to upload a pic - i hope its easily viewable.... I need to know if i am doing the UML / design patterns correctly before moving on to the coding part. Beverage is my abstract component class. Espresso, houseblend, darkroast are my concrete subject classes.. I also have a condiment decorator class milk,mocha,soy,whip. would be my observer? because they would be interested in data changes to cost? Now, would the espresso,houseblend etc, be my SUBJECT and the condiments be my observer? My theory is that Cost is a changes and that the condiments need to know the changes? So, subject = esspresso,houseblend,darkroast,etc.. // they hold cost() Observer = milk,mocha,soy,whip? // they hold cost() would be the concrete components and the milk,mocha,soy,whip? would be the decorator! So, following good software engineering practices "design to an interface and not implementation" or "identify things that change from those that dont" would i need a costbehavior interface? If you look at the UML you will see where i am going with this and see if i am implementing observer + Decorator pattern correctly? I think the decorator is correct. since, the pic is not very viewable i will detail the classes here: Beverage class(register observer, remove observer, notify observer, description) these classes are the concrete beverage classes espresso, houseblend,darkroast, decaf(cost,getdescription,setcost,costchanged) interface observer class(update) // cost? interface costbehavior class(cost) // since this changes? condiment decorator class( getdescription) concrete classes that are linked to the 2 interface s and decorator are: milk,mocha,soy,whip(cost,getdescription,update) these are my decorator/ wrapper classes. Thank you.. Is there a way to make this picture bigger?

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