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  • Multiple column subselect in mysql 5 (5.1.42)

    - by rubber boots
    This one seems to be a simple problem, but I can't make it work in a single select or nested select. Retrieve the authors and (if any) advisers of a paper (article) into one row. I order to explain the problem, here are the two data tables (pseudo) papers (id, title, c_year) persons (id, firstname, lastname) plus a link table w/one extra attribute (pseudo): paper_person_roles( paper_id person_id act_role ENUM ('AUTHOR', 'ADVISER') ) This is basically a list of written papers (table: papers) and a list of staff and/or students (table: persons) An article my have (1,N) authors. An article may have (0,N) advisers. A person can be in 'AUTHOR' or 'ADVISER' role (but not at the same time). The application eventually puts out table rows containing the following entries: TH: || Paper_ID | Author(s) | Title | Adviser(s) | TD: || 21334 |John Doe, Jeff Tucker|Why the moon looks yellow|Brown, Rayleigh| ... My first approach was like: select/extract a full list of articles into the application, eg.SELECT q.id, q.title FROM papers AS q ORDER BY q.c_year and save the results of the query into an array (in the application). After this step, loop over the array of the returned information and retrieve authors and advisers (if any), via prepared statement (? is the paper's id) from the link table like:APPLICATION_LOOP(paper_ids in array) SELECT p.lastname, p.firstname, r.act_role FROM persons AS p, paper_person_roles AS r WHERE p.id=r.person_id AND r.paper_id = ? # The application does further processing from here (pseudo): foreach record from resulting records if record.act_role eq 'AUTHOR' then join to author_column if record.act_role eq 'ADVISER' then join to avdiser_column end print id, author_column, title, adviser_column APPLICATION_LOOP This works so far and gives the desired output. Would it make sense to put the computation back into the DB? I'm not very proficient in nontrivial SQL and can't find a solution with a single (combined or nested) select call. I tried sth. like SELECT q.title (CONCAT_WS(' ', (SELECT p.firstname, p.lastname AS aunames FROM persons AS p, paper_person_roles AS r WHERE q.id=r.paper_id AND r.act_role='AUTHOR') ) ) AS aulist FROM papers AS q, persons AS p, paper_person_roles AS r in several variations, but no luck ... Maybe there is some chance? Thanks in advance r.b.

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  • Read Velocity Tokens/Tag from .vm file

    - by user1801660
    I have an application where in I am trying to create a velocity template repository which will help me centralise all my email templates and will allow me to create a communication hub. All templates will be called at runtime and populates with data via services. My problem is that I need to provide users with optional and compulsory params list when they define the template inputs for the velocity template. Is there a way to read the tokens/tags from the velocity template file and extract them?? Like I want a list of tokens $name.address.streetName to be available to me from .vm file. I do not want to go for Regex . I do not have to cache or reuse them , its just going to be a one time read and store the default,compulsory & optional params in the database. I am following these patterns : http://kickjava.com/src/org/apache/velocity/test/view/TemplateNodeView.java.htm How to use String as Velocity Template? Please advice.

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  • Is there a difference between `==` and `is` in python?

    - by Bernard
    My Google-fu has failed me. In Python, are these: n = 5 # Test one. if n == 5: print 'Yay!' # Test two. if n is 5: print 'Yay!' two tests for equality equivalent (ha!)? Does this hold true for objects where you would be comparing instances (a list say)? Okay, so this kind of answers my question: l = list() l.append(1) if l == [1]: print 'Yay!' # Holds true, but... if l is [1]: print 'Yay!' # Doesn't. So == tests value where is tests to see if they are the same object?

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  • passing get parameters through named route and then to controller model; stringify_keys!

    - by user368937
    Hey, I'm just learning ruby on rails and I've been stumped on this for awhile now. Here's my url request: http://192.168.2.20:8080/Location/new/123.123,-123.123/ Here's my routes.rb: map.connect '/Location/new/:coords/', :controller => 'Location', :action => 'new', :coords => /\d+.\d+,-\d+.\d+/ map.connect '/Location/list/', :controller => 'Location', :action => 'list' map.connect '/Location/create/', :controller => 'Location', :action => 'create' Here's my location_controller.rb def new @coords = Location.new(params[:coords]) end Here's the error message it gives me: NoMethodError in LocationController#new undefined method `stringify_keys!' for "123.123,-123.123":String

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  • Why isn't my File.Move() working?

    - by yeahumok
    I'm not sure what exactly i'm doing wrong here...but i noticed that my File.Move() isn't renaming any files. Also, does anybody know how in my 2nd loop, i'd be able to populate my .txt file with a list of the path AND sanitized file name? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Text.RegularExpressions; namespace ConsoleApplication2 { class Program { static void Main(string[] args) { //recurse through files. Let user press 'ok' to move onto next step string[] files = Directory.GetFiles(@"C:\Documents and Settings\jane.doe\Desktop\~Test Folder for [SharePoint] %testing", "*.*", SearchOption.AllDirectories); foreach (string file in files) { Console.Write(file + "\r\n"); } Console.WriteLine("Press any key to continue..."); Console.ReadKey(true); //End section //Regex -- find invalid chars string pattern = " *[\\~#%&*{}/<>?|\"-]+ *"; string replacement = " "; Regex regEx = new Regex(pattern); string[] fileDrive = Directory.GetFiles(@"C:\Documents and Settings\jane.doe\Desktop\~Test Folder for [SharePoint] %testing", "*.*", SearchOption.AllDirectories); List<string> filePath = new List<string>(); //clean out file -- remove the path name so file name only shows string result; foreach(string fileNames in fileDrive) { result = Path.GetFileName(fileNames); filePath.Add(result); } StreamWriter sw = new StreamWriter(@"C:\Documents and Settings\jane.doe\Desktop\~Test Folder for [SharePoint] %testing\File_Renames.txt"); //Sanitize and remove invalid chars foreach(string Files2 in filePath) { try { string sanitized = regEx.Replace(Files2, replacement); sw.Write(sanitized + "\r\n"); System.IO.File.Move(Files2, sanitized); System.IO.File.Delete(Files2); } catch (Exception ex) { Console.Write(ex); } } sw.Close(); } } } I'm VERY new to C# and trying to write an app that recurses through a specific drive, finds invalid characters (as specified in the RegEx pattern), removes them from the filename and then write a .txt file that has the path name and the corrected filename. Any ideas?

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  • Parsing csv line to Java objects

    - by Noobling
    I was wondering if someone here could help me, I can't find a solution for my problem and I have tried everything. What I am trying to do is read and parse lines in a csv file into java objects and I have succeeded in doing that but after it reads all the lines it should insert the lines into the database but it only inserts the 1st line the entire time and I don't no why. When I do a print it shows that it is reading all the lines and placing them in the objects but as soon as I do the insert it wants to insert only the 1st line. Please see my code below: public boolean lineReader(File file){ BufferedReader br = null; String line= ""; String splitBy = ","; storeList = new ArrayList<StoreFile>(); try { br = new BufferedReader(new FileReader(file)); while((line = br.readLine())!=null){ line = line.replace('|', ','); //split on pipe ( | ) String[] array = line.split(splitBy, 14); //Add values from csv to store object //Add values from csv to storeF objects StoreFile StoreF = new StoreFile(); if (array[0].equals("H") || array[0].equals("T")) { return false; } else { StoreF.setRetailID(array[1].replaceAll("/", "")); StoreF.setChain(array[2].replaceAll("/","")); StoreF.setStoreID(array[3].replaceAll("/", "")); StoreF.setStoreName(array[4].replaceAll("/", "")); StoreF.setAddress1(array[5].replaceAll("/", "")); StoreF.setAddress2(array[6].replaceAll("/", "")); StoreF.setAddress3(array[7].replaceAll("/", "")); StoreF.setProvince(array[8].replaceAll("/", "")); StoreF.setAddress4(array[9].replaceAll("/", "")); StoreF.setCountry(array[10].replaceAll("/", "")); StoreF.setCurrency(array[11].replaceAll("/", "")); StoreF.setAddress5(array[12].replaceAll("/", "")); StoreF.setTelNo(array[13].replaceAll("/", "")); //Add stores to list storeList.add(StoreF); } } //print list stores in file printStoreList(storeList); executeStoredPro(storeList); } catch (Exception ex) { nmtbatchservice.NMTBatchService2.LOG.error("An exception accoured: " + ex.getMessage(), ex); //copy to error folder //email } return false; } public void printStoreList(List<StoreFile> storeListToPrint) { for(int i = 0; i <storeListToPrint.size();i++){ System.out.println( storeListToPrint.get(i).getRetailID() + storeListToPrint.get(i).getChain() + storeListToPrint.get(i).getStoreID() + storeListToPrint.get(i).getStoreName() + storeListToPrint.get(i).getAddress1() + storeListToPrint.get(i).getAddress2() + storeListToPrint.get(i).getAddress3() + storeListToPrint.get(i).getProvince() + storeListToPrint.get(i).getAddress4() + storeListToPrint.get(i).getCountry() + storeListToPrint.get(i).getCurrency() + storeListToPrint.get(i).getAddress5() + storeListToPrint.get(i).getTelNo()); } } public void unzip(String source, String destination) { try { ZipFile zipFile = new ZipFile(source); zipFile.extractAll(destination); deleteStoreFile(source); } catch (ZipException ex) { nmtbatchservice.NMTBatchService2.LOG.error("Error unzipping file : " + ex.getMessage(), ex); } } public void deleteStoreFile(String directory) { try { File file = new File(directory); file.delete(); } catch (Exception ex) { nmtbatchservice.NMTBatchService2.LOG.error("An exception accoured when trying to delete file " + directory + " : " + ex.getMessage(), ex); } } public void executeStoredPro(List<StoreFile> storeListToInsert) { Connection con = null; CallableStatement st = null; try { String connectionURL = MSSQLConnectionURL; Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance(); con = DriverManager.getConnection(connectionURL, MSSQLUsername, MSSQLPassword); for(int i = 0; i <storeListToInsert.size();i++){ st = con.prepareCall( "IF EXISTS (SELECT * FROM tblPay@RetailStores WHERE StoreID = " + storeListToInsert.get(i).getStoreID() + " AND RetailID = "+ storeListToInsert.get(i).getRetailID() + ")" + " UPDATE tblPay@RetailStores " + " SET RetailID = '" + storeListToInsert.get(i).getRetailID() + "'," + " StoreID = '" + storeListToInsert.get(i).getStoreID() + "'," + " StoreName = '" + storeListToInsert.get(i).getStoreName() + "'," + " TestStore = 0," + " Address1 = '" + storeListToInsert.get(i).getAddress1() + "'," + " Address2 = '" + storeListToInsert.get(i).getAddress2() + "'," + " Address3 = '" + storeListToInsert.get(i).getAddress3() + "'," + " Address4 = '" + storeListToInsert.get(i).getAddress4() + "'," + " Address5 = '" + storeListToInsert.get(i).getAddress5() + "'," + " Province = '" + storeListToInsert.get(i).getProvince() + "'," + " TelNo = '" + storeListToInsert.get(i).getTelNo() + "'," + " Enabled = 1" + " ELSE " + " INSERT INTO tblPay@RetailStores ( [RetailID], [StoreID], [StoreName], [TestStore], [Address1], [Address2], [Address3], [Address4], [Address5], [Province], [TelNo] , [Enabled] ) " + " VALUES " + "('" + storeListToInsert.get(i).getRetailID() + "'," + "'" + storeListToInsert.get(i).getStoreID() + "'," + "'" + storeListToInsert.get(i).getStoreName() + "'," + "0," + "'" + storeListToInsert.get(i).getAddress1() + "'," + "'" + storeListToInsert.get(i).getAddress2() + "'," + "'" + storeListToInsert.get(i).getAddress3() + "'," + "'" + storeListToInsert.get(i).getAddress4() + "'," + "'" + storeListToInsert.get(i).getAddress5() + "'," + "'" + storeListToInsert.get(i).getProvince() + "'," + "'" + storeListToInsert.get(i).getTelNo() + "'," + "1)"); st.executeUpdate(); } con.close(); } catch (Exception ex) { nmtbatchservice.NMTBatchService2.LOG.error("Error executing Stored proc with error : " + ex.getMessage(), ex); nmtbatchservice.NMTBatchService2.mailingQueue.addToQueue(new Mail("[email protected]", "Service Email Error", "An error occurred during Store Import failed with error : " + ex.getMessage())); } } Any advise would be appreciated. Thanks

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  • Asp.net Page and control Events

    - by andrewWinn
    I have looked all over the web and I can not find the information I am looking for and I was hoping that someone could give me a hand. Specifically, I am looking for a comprehensive list of what events occur in the page and control life cycles and what is "available" in each event. Like when can I get a dropdownlists selected value, when can i databind, when can I get at values in view state and what not. Can anyone point me to a comprehensive list for both page and control life cycles? Or even provide that information for me? Thanks in advance.

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  • What are good uses for Python3's "Function Annotations"

    - by agscala
    Function Annotations: PEP-3107 I ran across a snippet of code demonstrating Python3's function annotations. The concept is simple but I can't think of why these were implemented in Python3 or any good uses for them. Perhaps SO can enlighten me? How it works: def foo(a: 'x', b: 5 + 6, c: list) -> max(2, 9): ... function body ... Everything following the colon after an argument is an 'annotation', and the information following the -> is an annotation for the function's return value. foo.func_annotations would return a dictionary: {'a': 'x', 'b': 11, 'c': list, 'return': 9} What's the significance of having this available?

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  • how to display the listbox items to a label using VB2008

    - by Cecilia
    I am trying to display listbox items in a label. After debugging,I get the error : " make sure that the maximun index on the list is less than the list size" any comment will be highly appreciate, Private Sub xMultiButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles xMultiButton.Click Dim count As Integer count = Me.xNamesListBox.Items.Count For count = 0 To 3 Me.xResultLabel.Text = Me.xNamesListBox.SelectedItems.Item(0).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(1).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(2).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(3).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(4).ToString Next End Sub

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  • Android - Array or for statement problem

    - by Normano
    I making on a app, but I have a problem with for or with a array. When I use this code case MotionEvent.ACTION_MOVE: for (int i = 0; i < Button.length; i++) { if (Y > Button[i].getTop()+25 && Y < Button[i].getBottom()+25 && X > Button[i].getLeft() && X < Button[i].getRight()){ LastButton = i; edittext.setText("id " + i); } } break; But the for statement skip the first button in the array and the second button get id 1. anyone know how I can fix it? Thanks

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  • Virtual String Tree - Display subnode when parent node is hidden

    - by daemon_x
    Is there a way to show subnode if the parent node is hidden in the Virtual String Tree ? I have some tasks in the tree structure and I wish to display only tasks which belongs to the current user as the list, but from all levels. What I've done is the function to display a list, which hides tree buttons, tree lines, sets the fixed indent and enable toShowHiddenNodes option. Then in this function I iterate through the whole tree (all levels) and hide nodes which doesn't belong to the current user IsVisible[Node] := False and show those which belongs him IsVisible[Node] := True, but the subnodes which should be displayed are invisible when their parent is hidden. VT.TreeOptions.PaintOptions - toShowButtons - toShowTreeLines + toFixedIndent + toShowHiddenNodes

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  • How to bind data in silverlight? In case I don't know which columns would be retrieved from database

    - by kwon
    I am trying to bind data from database to datagrid in silverlight. When I get typed data from DB, it is no problem since I use List<'EntityObject' collection object for example. However, sometimes I need data which I won't be able to know how many and what columns will be generated in design time. In this case, I cannot use typed collection like List<'EntityObject'. In addition, it is not able to use DataSet in silverlight. So, in this case and situation, how to solve this kind of problem? Thanks in advance Kwon

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  • HTML Dynamic Number of Dropdowns

    - by Evilsithgirl
    I have this form on which I would like to create a dynamic number of dropdowns. I have a list of categorized applications which I would like each to have its own dropdown that submits data for each dropdown. The dropdown options will be the same for each. Here is my code. I am not sure how to pass the unique data to the server. As you can see I currently have an iteration over a list of applications that I would like to make each select in that iteration its own dropdown. Thanks in advance. <html:form action="/CategorizeApps.do"> <h3>Uncategorized</h3> <br/> Categorize each application using the dropdown menu then click categorize.<br/> <table class="list"> <thead> <tr class="controls"> <td><input type="submit" name="btnAction" value="Categorize"/></td> </tr> <tr class="fields"> <td>ID</td> <td>Name</td> <td></td> </tr> </thead> <tbody> <logic:iterate id="uncat" name="appsUncat" scope="session"> <tr class="hlist"> <td><bean:write property="id" name="uncat" scope="page"/></td> <td><bean:write property="name" name="uncat" scope="page"/></td> <td><select id="category" name="category"> <logic:iterate id="categories" name="Categories" scope="session"> <option value="<bean:write name="categories" property="id" scope="page"/>"><bean:write name="categories" property="name" scope="page"/></option> </logic:iterate> </select></td> </tr> </logic:iterate> </tbody> </table> </html:form>

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  • Listing and deleting Git commits that are under no branch (dangling?)

    - by Samer Abukhait
    I've got a git repository with plenty of commits that are under no particular branch, I can git show them but when I try to list branches that contain them, it reports back nothing: I thought this is the dangling commits/tree issue (as a result of -D branch), so I pruned the repo, but I still see the case after that: $ git fetch origin $ git fsck --unreachable $ git fsck No output, nothing dangling (right?) $ git show 793db7f272ba4bbdd1e32f14410a52a412667042 commit 793db7f272ba4bbdd1e32f14410a52a412667042 Author: .. But $ git branch --contains 793db7f272ba4bbdd1e32f14410a52a412667042 Gives no output What exactly is the state of that commit? How can I list all commits with similar state, How can I delete commits like those?

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  • Is the last digit of a phone number random?

    - by sehugg
    I have a telephony app which has a prompt which requires user choice. I made the app select one of 10 different phone prompts based on the last digit of the caller's phone number. Then I measure whether the user responds to the prompt (accept) or decides to skip to the next step (reject). I thought this would work well enough as a random selection, but I think I may be wrong. What I'm finding is that the exact same prompt has a dramatically different response rate (25% vs 35%) for two different last digits. Now I'm curious why this is. Does anyone know how phone numbers are assigned and why the last digit would be significant?

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  • AutoMapping Custom Collections with FluentNHibernate

    - by ScottBelchak
    I am retrofitting a very large application to use NHibernate as it's data access strategy. Everything is going well with AutoMapping. Luckily when the domain layer was built, we used a code generator. The main issue that I am running into now is that every collection is hidden behind a custom class that derives from List<. For example public class League { public OwnerList owners {get;set;} } public class OwnerList : AppList<Owner> { } public class AppList<T> : List<T> { } What kind of Convention do I have to write to get this done?

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  • Casting class to interface and back

    - by Thomas
    I have the following: public interface ICartItem { string Name { get; set; } } public class CartItem : ICartItem { public string Name { get; set; } } I then create a List and cast it to an interface: IList<CartItem> items = new List<CartItem>() { new CartItem() { Name = "MyItem" } }; IList<ICartItem> cartItems = items.Cast<ICartItem>().ToList(); Is there a way to cast it back again like illustrated below? IList<CartItem> newList = cartItems as IList<CartItem>;

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  • custom ListView --Null pointer exception

    - by raghs
    this code throws a Null pointer exception. It was thrown by getChildAt(i). The getCount() returns the number of items in listView. But getChildAt(i) returns only if item is present in current list view. For example in a scrollable list view assume that there are 20 items. The getCount() returns 20. But getChildAt(20) returns null. Because it doesnot fit in listview. How to solve this problem?? int i,j=object.getCount(); View v=getListView(); CheckBox chk=null; for(i=0;i<j;i++) { chk=((CheckBox)((ViewGroup) v).getChildAt(i).findViewById(R.id.checkBox1)); if(chk.isChecked()) { //download the contents to specific folder in sd card } }

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  • Unable to publish files in SharePoint

    - by iHeartDucks
    When I publish a file from code byte[] fileBytes = objItem.File.OpenBinary(); string DestinationURL = string.Format(@"{0}/{1}", objDestinationFolder.Url, objItem.File.Name); //Copy the file. SPFile objDestinationFile = objDestinationFolder.Files.Add(DestinationURL, fileBytes, true); objDestinationFile.Update(); objDestinationFile.Publish(string.Format("File Copied from {0}", objItem.Url)); I get an error message which says You can only publish, unpublish documents in a minor version enabled list Ii checked the permissions of the list and it has "Create major and minor (draft) versions" checked. Any ideas?

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  • Json Object to a Multidimensional C# Array?

    - by Nick Brooks
    Is there a way to convert a Json Object to a Multidimensional C# Array? I know it might be impractical but I can't be bothered to write classes and then deserialize the strings into them. List<string> ohyeah = (List<string>)JsonConvert.DeserializeObject(g.CommToken); That returns an Invalid Cast exception! Example: {"method":"getCommunicationToken","header":{"uuid":"9B39AAB0-49A6-AC7A-BA74-DE9DA66C62B7","clientRevision":"20100323.02","session":"c0d3e8b5d661f74c68ad72af17aeb5a1","client":"gslite"},"parameters":{"secretKey":"d9b687fa10c927f102cde9c085f9377f"}} I need to get something like that : j["method"]; //This will equal to getCommunicationToken j["header"]["uuid"]; //This will equal to 9B39AAB0-49A6-AC7A-BA74-DE9DA66C62B7 I literally need to parse the json object into an array.

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  • Does C++ require a destructor call for each placement new?

    - by Josh Haberman
    I understand that placement new calls are usually matched with explicit calls to the destructor. My question is: if I have no need for a destructor (no code to put there, and no member variables that have destructors) can I safely skip the explicit destructor call? Here is my use case: I want to write C++ bindings for a C API. In the C API many objects are accessible only by pointer. Instead of creating a wrapper object that contains a single pointer (which is wasteful and semantically confusing). I want to use placement new to construct an object at the address of the C object. The C++ object will do nothing in its constructor or destructor, and its methods will do nothing but delegate to the C methods. The C++ object will contain no virtual methods. I have two parts to this question. Is there any reason why this idea will not work in practice on any production compiler? Does this technically violate the C++ language spec?

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  • Is there a .def file equicalent on Linux for controlling exported function names in a shared library

    - by morpheous
    I am building a shared library on Ubuntu 9.10. I want to export only a subset of my functions from the library. On the Windows platform, this would be done using a module definition ( .def) file which would contain a list of the external and internal names of the functions exported from the library. I have the following questions: How can I restrict the exported functions of a shared library to those I want (i.e. a .def file equivalent) Using .def files as an example, you can give a function an external name that is different from its internal name (useful for prevent name collisions and also redecorating mangled names etc) On windows I can use the EXPORT command (IIRC) to check the list of exported functions and addresses, what is the equivalent way to do this on Linux?

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