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  • How to Calculate longest streak in SQL?

    - by VJ
    I have EMPLOYEE-ID,DATE,IsPresent I want to calculate longest streak for a employee presence.The Present bit will be false for days he didnt come..So I want to calculate the longest number of days he came to office for consecutive dates..I have the Date column field is unique...So I tried this way - Select Id,Count(*) from Employee where IsPresent=1 But the above doesnt work...Can anyone guide me towards how I can calculate streak for this?....I am sure people have come across this...I tried searching online but...didnt understand it well...please help me out..

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  • pgSQL query error

    - by running4surival
    i tried using this query: "SELECT * FROM guests WHERE event_id=".$id." GROUP BY member_id;" and I'm getting this error: ERROR: column "guests.id" must appear in the GROUP BY clause or be used in an aggregate function can anyone explain how i can work around this?

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  • Authenticating users in iPhone app

    - by Myron
    I'm developing an HTTP api for our web application. Initially, the primary consumer of the API will be an iPhone app we're developing, but I'm designing this with future uses in mind (such as mobile apps for other platforms). I'm trying to decide on the best way to authenticate users so they can access their accounts from the iPhone. I've got a design that I think works well, but I'm no security expert, so I figured it would be good to ask for feedback here. The design of the user authentication has 3 primary goals: Good user experience: We want to allow users to enter their credentials once, and remain logged in indefinitely, until they explicitly log out. I would have considered OAuth if not for the fact that the experience from an iPhone app is pretty awful, from what I've heard (i.e. it launches the login form in Safari, then tells the user to return to the app when authentication succeeds). No need to store the user creds with the app: I always hate the idea of having the user's password stored in either plain text or symmetrically encrypted anywhere, so I don't want the app to have to store the password to pass it to the API for future API requests. Security: We definitely don't need the intense security of a banking app, but I'd obviously like this to be secure. Overall, the API is REST-inspired (i.e. treating URLs as resources, and using the HTTP methods and status codes semantically). Each request to the API must include two custom HTTP headers: an API Key (unique to each client app) and a unique device ID. The API requires all requests to be made using HTTPS, so that the headers and body are encrypted. My plan is to have an api_sessions table in my database. It has a unique constraint on the API key and unique device ID (so that a device may only be logged into a single user account through a given app) as well as a foreign key to the users table. The API will have a login endpoint, which receives the username/password and, if they match an account, logs the user in, creating an api_sessions record for the given API key and device id. Future API requests will look up the api_session using the API key and device id, and, if a record is found, treat the request as being logged in under the user account referenced by the api_session record. There will also be a logout API endpoint, which deletes the record from the api_sessions table. Does anyone see any obvious security holes in this?

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  • jQuery - .toggle() triggering on page load

    - by Jean
    Hello, When I click on the word Directory, the up arrow image must change to down, and vice-versa when clicked again. In this code, when the page loads, toggle is triggered. $('#direct').click(function(){ $('#arrow').attr('src','images/down_arrow_black.gif'); }); <div id="direct"><img src="images/up_arrow_black.gif" id="arrow" />Directory</div> Thanks Jean

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  • MySQL Multiple Subquery on same table

    - by user1444980
    I have a table of the following structure ID | Amount | Bank (1 or 2) ---+--------+------ 1 | 100000 | 1 2 | 256415 | 2 3 | 142535 | 1 1 | 214561 | 2 2 | 123456 | 1 1 | 987654 | 2 I want a result like this (from the same table): ID | sum(Bank 1) | sum(Bank 2) ---+-------------+------------ 1 | 100000 | 1202215 2 | 123456 | 256415 3 | 142535 | 0 What will be the easiest query to achieve this?

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  • [jquery/javascript] How select all checkboxes with class "xxx" ?

    - by marc
    Welcome, It it possible to select all checkboxes / uncheck all checkboxes what have class "xxx" ? I can't use "name" and "ID" because there are generated dynamical via PHP and i don't know their name. So maybye i can add class "xxx" for these what i wan't control ? Is is possible ? Or, if not possible. Maybye i can select all / unselect what are inside table with id "selectall" ? Regards

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  • JPA and compatibility with persistance providers and databases vendors

    - by Kartoch
    JPA promises to be vendor neutral for persistence and database. But I already know than some persistence frameworks like hibernate are not perfect (character encoding, null comparison) and you need to adapt your schema for each database. Because there is two layers (the persistence framework and database), I would imagine they're some work to use some JPA codes... Does anyone has some experiences with multiple support and if yes, what are the tricks and recommendations to avoid such incompatibilities ?

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  • Strange (atleast for me) behavior in Django template

    - by lud0h
    The following code snippet in a Django template (v 1.1) doesn't work. {{ item.vendors.all.0 }} == returns "Test" but the following code snippet, doesn't hide the paragraph! {% ifnotequal item.vendors.all.0 "Test" %} <p class="view_vendor">Vendor(s): {{item.vendors.all.0}} </p><br /> {% endifnotequal %} Any tips on what's wrong? Thanks.

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  • Problem persisting inheritance tree

    - by alaiseca
    I have a problem trying to map an inheritance tree. A simplified version of my model is like this: @MappedSuperclass @Embeddable public class BaseEmbedded implements Serializable { @Column(name="BE_FIELD") private String beField; // Getters and setters follow } @MappedSuperclass @Embeddable public class DerivedEmbedded extends BaseEmbedded { @Column(name="DE_FIELD") private String deField; // Getters and setters follow } @MappedSuperclass public abstract class BaseClass implements Serializable { @Embedded protected BaseEmbedded embedded; public BaseClass() { this.embedded = new BaseEmbedded(); } // Getters and setters follow } @Entity @Table(name="MYTABLE") @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="TYPE", discriminatorType=DiscriminatorType.STRING) public class DerivedClass extends BaseClass { @Id @Column(name="ID", nullable=false) private Long id; @Column(name="TYPE", nullable=false, insertable=false, updatable=false) private String type; public DerivedClass() { this.embedded = new DerivedClass(); } // Getters and setters follow } @Entity @DiscriminatorValue("A") public class DerivedClassA extends DerivedClass { @Embeddable public static NestedClassA extends DerivedEmbedded { @Column(name="FIELD_CLASS_A") private String fieldClassA; } public DerivedClassA() { this.embedded = new NestedClassA(); } // Getters and setters follow } @Entity @DiscriminatorValue("B") public class DerivedClassB extends DerivedClass { @Embeddable public static NestedClassB extends DerivedEmbedded { @Column(name="FIELD_CLASS_B") private String fieldClassB; } public DerivedClassB() { this.embedded = new NestedClassB(); } // Getters and setters follow } At Java level, this model is working fine, and I believe is the appropriate one. My problem comes up when it's time to persist an object. At runtime, I can create an object which could be an instance of DerivedClass, DerivedClassA or DerivedClassB. As you can see, each one of the derived classes introduces a new field which only makes sense for that specific derived class. All the classes share the same physical table in the database. If I persist an object of type DerivedClass, I expect fields BE_FIELD, DE_FIELD, ID and TYPE to be persisted with their values and the remaining fields to be null. If I persist an object of type DerivedClass A, I expect those same fields plus the FIELD_CLASS_A field to be persisted with their values and field FIELD_CLASS_B to be null. Something equivalent for an object of type DerivedClassB. Since the @Embedded annotation is at the BaseClass only, Hibernate is only persisting the fields up to that level in the tree. I don't know how to tell Hibernate that I want to persist up to the appropriate level in the tree, depending on the actual type of the embedded property. I cannot have another @Embedded property in the subclasses since this would duplicate data that is already present in the superclass and would also break the Java model. I cannot declare the embedded property to be of a more specific type either, since it's only at runtime when the actual object is created and I don't have a single branch in the hierarchy. Is it possible to solve my problem? Or should I resignate myself to accept that there is no way to persist the Java model as it is? Any help will be greatly appreciated.

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  • Grid View Button Passing Data Via On Click

    - by flyersun
    Hi, I'm pretty new to C# and asp.net so aplogies if this is a really stupid question. I'm using a grid view to display a number of records from a database. Each row has an Edit Button. When the button is clicked I want an ID to be passed back to a funtion in my .cs file. How do I bind the rowID to the Button field? I've tired using a hyper link instead but this doens't seem to work because I'm posting back to the same page which already has a Permanter on the URL. asp.net <asp:GridView ID="gvAddresses" runat="server" onrowcommand="Edit_Row"> <Columns> <asp:ButtonField runat="server" ButtonType="Button" Text="Edit"> </Columns> </asp:GridView> c# int ImplantID = Convert.ToInt32(Request.QueryString["ImplantID"]); Session.Add("ImplantID", ImplantID); List<GetImplantDetails> DataObject = ImplantDetails(ImplantID); System.Data.DataSet DSImplant = new DataSet(); System.Data.DataTable DTImplant = new DataTable("Implant"); DSImplant.Tables.Add(DTImplant); DataColumn ColPostCode = new DataColumn(); ColPostCode.ColumnName = "PostCode"; ColPostCode.DataType = typeof(string); DTImplant.Columns.Add(ColPostCode); DataColumn ColConsigneeName = new DataColumn(); ColConsigneeName.ColumnName = "Consignee Name"; ColConsigneeName.DataType = typeof(string); DTImplant.Columns.Add(ColConsigneeName); DataColumn ColIsPrimaryAddress = new DataColumn(); ColIsPrimaryAddress.ColumnName = "Primary"; ColIsPrimaryAddress.DataType = typeof(int); DTImplant.Columns.Add(ColIsPrimaryAddress); DataColumn ColImplantCustomerDetailsID = new DataColumn(); ColImplantCustomerDetailsID.ColumnName = "Implant ID"; ColImplantCustomerDetailsID.DataType = typeof(int); DTImplant.Columns.Add(ColImplantCustomerDetailsID); foreach (GetImplantDetails Object in DataObject) { DataRow DRImplant = DTImplant.NewRow(); DRImplant["PostCode"] = Object.GetPostCode(); DRImplant["Consignee Name"] = Object.GetConsigneeName(); DRImplant["Primary"] = Object.GetIsPrimaryAddress(); DRImplant["Implant ID"] = Object.GeTImplantCustomerDetailsID(); DTImplant.Rows.Add(DRImplant); <--- this is what I need to be added to the button } gvAddresses.DataSource = DTImplant; gvAddresses.DataBind();

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  • jquery click event not working on first click,

    - by kumar
    $("#table").click(function(e) { var row = jQuery(e.target || e.srcElement).parent(); $('#tabletr').bind('click', show); name= row.att("id"); }); I am not getting the id value very first time i click on the row? second time I am getting fine? can anyone tell me why its happening like this?

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  • What is the difference?

    - by Eragonio
    I try out CakePHP. I follow this Tutorial and can't find out why this code doesn't work. The code from the tutorial works fine. echo $html -> link('Löschen', array('action' => 'delete', 'id' => $post['Post']['id']), null, 'Sind Sie sicher?' );

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  • Accesing server control from withing app_code class

    - by OverSeven
    My question is about how to acces a server control (listbox) that is located in default.aspx. I wish to acces this control in Functions.cs (this class is located in the App_Code folder). My page structures: - 1 masterpage with 1 content holder - Default.aspx (all the controls are within the content place holder) - Functions.cs (located in App_Code) Now when i try to fill up the listbox elements i get the error "object reference not set to an instance of an object." What i have tried to gain acces to this control: (this code is located in Functions.cs in App_Code). This is basicly showing some items in the listbox that are located in the xml file private static string file = HttpContext.Current.Server.MapPath("~/App_Data/Questions.xml"); public static void ListItems() { XmlDocument XMLDoc = new XmlDocument(); XMLDoc.Load(file); XPathNavigator nav = XMLDoc.CreateNavigator(); XPathExpression expr; expr = nav.Compile("/root/file/naam"); XPathNodeIterator iterator = nav.Select(expr); //ATTEMPT to get acces to ServerControl(listbox) Page page = (Page)HttpContext.Current.Handler; ListBox test = (ListBox)page.FindControl("lbTest"); //control is called lbTest in Default.aspx test.Items.Clear(); while (iterator.MoveNext()) { test.Items.Add(iterator.Current.Value); } } Code from the default.apx file <%@ Page Title="" Language="C#" MasterPageFile="~/MasterFile.master" AutoEventWireup="true" CodeFile="default.aspx.cs" Inherits="default" Debug="true" %> <%@ MasterType TypeName="Master" %> <asp:Content ID="Content1" ContentPlaceHolderID="cphContent" Runat="Server" > <asp:MultiView ID="mvTest" runat="server" > <asp:View ID="vCollection" runat="server"> <asp:ListBox ID="lbTest" runat="server" CssClass="listbox" ></asp:ListBox> </asp:View> </asp:MultiView> </asp:Content> The masterfile itself just has 1 placeholder. Then i call upon the funcion ListItems in the Default.aspx.cs file protected void Page_Load(object sender, EventArgs e) { Functions.ListItems(); } Regards.

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  • how to pass an integeter array from a asp.net mvc controller action back to javascript using jquery

    - by oo
    Here is my jQuery code: $.get('/Home/GetList', function(data) { debugger; $('#myMultiSelect').val(data); }); Here is my controller code: public ActionResult GetList(int id) { int[] bodyParts = _repository.GetList(id); //how do i return this as an array back to javascript ?? } if I have the GetList function return an array of integers, how do I return this to the jQuery function?

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  • Deleting Row Method on GridView

    - by George
    I am trying to implement the deleting method and pass my parameters for the delete operation. I am using sqldatasource. Since the ID doesnt have a column in my gridview how can I get the value of the ID and set it as my delete parameter?

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  • How to determine expected license serial number by viewing an EXE File?

    - by Steve
    I was attempting to install an exe that requires a serial number before the install, which the vendor has not provided to us yet. This got my wheels turning about whether there is any information that can be gained from viewing an exe using a hex editor/VI/etc? Using VI to view an exe, I can see some sections of plain text, but it is difficult to determine what it refers to without any context around it. Is it possible to determine any information by reading an exe? Thanks

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  • Submit button outside form_for loop

    - by user1152142
    I have set up some horizontal tabs using twitter bootstrap and I am rendering a form inside each of the tabs: <div class="tab-content"> <div id="tab1" class="tab-pane active"> <%= render :partial => "shipdr/websites/form", locals: {:@shipdr_website => shipdr_website} %> </div> <div id="tab2" class="tab-pane"> Another form (not yet implemented) </div> <div id="tab3" class="tab-pane"> Another form (not yet implemented). </div> </div> Then in shipdr/websites/form I have: <%= simple_form_for(@shipdr_website) do |f| %> <% if @shipdr_website.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(@shipdr_website.errors.count, "error") %> prohibited this shipdr_website from being saved:</h2> <ul> <% @shipdr_website.errors.full_messages.each do |msg| %> <li><%= msg %></li> <% end %> </ul> </div> <% end %> <div class="field"> <%= f.input :name %> </div> <div class="field"> <%= f.input :url %> </div> <div class="field"> <%= f.input :api_key %> </div> <div class="actions"> <%= f.submit nil, :class => "btn btn-primary" %> </div> <% end %> I want to move the submit button outside of the "tab-content" area so when a user clicks the submit button, all three forms area submitted. All forms will use that same model and the same action but will have different field. The idea is similar to a wizard except I am using tabs. Does anyone have any idea how I can move the submit button outside of the form_for loop and how I can submit the three forms with a single button?

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  • Implement delegates for Core Data or not

    - by Spanky
    What advantage is there to implementing the four delegate methods: (void)controllerWillChangeContent:(NSFetchedResultsController *)controller (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id )sectionInfo atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type newIndexPath:(NSIndexPath *)newIndexPath (void)controllerDidChangeContent:(NSFetchedResultsController *)controller rather than implement: (void)controllerDidChangeContent:(NSFetchedResultsController *)controller Any help appreciated // :)

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  • How do i convert this Mod_rewrite rule to nginx

    - by bacho
    This is the Htacces rule: RewriteEngine on RewriteRule ^([A-Za-z0-9-]+)/?$ ir.php?id=$1 how should I pass it to a Nginx compliant rewrite rule... i read the doc and did this: rewrite ^([A-Za-z0-9-]+)/?$ ir.php?id=$1 last; But didnt work. and another question: Is there any equivalent of .htaccess to Nginx (per directory rules) Thanks

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  • How to retrieve an input's value without the browser interpreting html special entities?

    - by CaptainQwyx
    Is there a way in JavaScript or MooTools to retrieve the actual text in the value from an input element without the browser interpreting any html special entites? Please see the example included below. My desired outcome is: <div id="output"> <p>Your text is: <b>[&lt;script&gt;alert('scrubbed');&lt;/script&gt;]</b></p> </div> Note that it works if I type/copy &lt;script&gt;alert('scrubbed');&lt;/script&gt; directly into the text input box, but fails if I insert right after loading the page. <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"> <title>scrubtest</title> </head> <body id="scrubtest" onload=""> <script type="text/javascript" language="JavaScript" src="/js/mootools-core.js"></script> <input type="text" name="scrubtext" value="&lt;script&gt;alert('scrubbed');&lt;/script&gt;" id="scrubtext"/><br /> <input type="button" value="Insert" onclick="insertText();"/><br /> <input type="button" value="Get via MooTools" onclick="alert($('scrubtext').get('value'));"/><br /> <input type="button" value="Get via JavaScript" onclick="alert(document.getElementById('scrubtext').value);"/><br /> <div id="output"> </div> <script type="text/javascript" charset="utf-8"> function insertText() { var stext = $('scrubtext').get('value'); var result = new Element( 'p', {html: "Your text is: <b>["+stext+"]</b>"} ); result.inject($('output')); } </script> </body> </html>

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  • Object as itemValue in <f:selectItems>

    - by Ehsun
    Is it possible to have objects as itemValue in tag? for example I have a class Foo: public class Foo { private int id; private String name; private Date date; } And another class Bar public class Bar { private Foo foos; } public class BarBean { private Set<Foo> foos; } Now in a Bean called BarBean I need to have a to get the Foo of the current Bar from User like this: <h:selectOneMenu value="#{barBean.bar.foo}" required="true"> <f:selectItems value="#{barBean.foos}" var="foo" itemLabel="#{foo.name}" itemValue="#{foo}" /> </h:selectOneMenu> ---------------edited: my converter: package ir.khorasancustoms.g2g.converters; import ir.khorasancustoms.g2g.persistance.CatalogValue; import java.util.ResourceBundle; import javax.faces.application.FacesMessage; import javax.faces.component.UIComponent; import javax.faces.context.FacesContext; import javax.faces.convert.Converter; import javax.faces.convert.FacesConverter; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; @FacesConverter("ir.khorasancustoms.CatalogValueConverter") public class CatalogValueConverter implements Converter { @Override public Object getAsObject(FacesContext context, UIComponent component, String value) { SessionFactory factory = new Configuration().configure().buildSessionFactory(); Session session = factory.openSession(); try { int id = Integer.parseInt(value); CatalogValue catalogValue = (CatalogValue) session.load(CatalogValue .class, id); return catalogValue; } catch (Exception ex) { Transaction tx = session.getTransaction(); if (tx.isActive()) { tx.rollback(); } ResourceBundle rb = ResourceBundle.getBundle("application"); String message = rb.getString("databaseConnectionFailed"); FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_FATAL, message, message)); } finally { session.close(); } return null; } @Override public String getAsString(FacesContext context, UIComponent component, Object value) { return ((CatalogValue) value).getId() + ""; } } and my facelet: <h:outputText value="#{lbls.paymentUnit}:"/> <h:selectOneMenu id="paymentUnit" label="#{lbls.paymentUnit}" value="#{price.price.ctvUnit}" required="true"> <f:selectItems value="#{price.paymentUnits}"/> <f:converter converterId="ir.khorasancustoms.CatalogValueConverter"/> </h:selectOneMenu> <h:message for="paymentUnit" infoClass="info" errorClass="error" warnClass="warning" fatalClass="fatal"/>

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  • Store information on iphone device

    - by Siva
    Hi I am new to iphone development. In my app, i am using two UITextfield for that registering user ID and password. These user ID and password should be save on iphone device after entered text in textfield by the user. is there any idea to do that without database? otherwise how to do that?

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