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  • Namespaced Backbone.js Views not firing events

    - by Stasio
    I'm currently getting started with Backbone.js. I've wrote some examples with Backbone and they are working fine. But now I need to use Backbone.js with Rails 3.1 and CoffeeScript. I took my well-working examples and rewrote on CoffeeScript using backbone-rails gem. And got the following problem. I've simplyfied code, but the problem is still remaining I've got the following files: Here I'm starting my Backbone app at main.js.coffee file according to my main_controller in rails app: $ = jQuery $-> CsfTaskManager.init() Here is backbone app description: #= require_self #= require_tree ./templates #= require_tree ./models #= require_tree ./views #= require_tree ./routers window.CsfTaskManager = Models: {} Collections: {} Routers: {} Views: {} init: -> new CsfTaskManager.Routers.AppRouter() Backbone.history.start() This is my apps' router: class CsfTaskManager.Routers.AppRouter extends Backbone.Router initialize: (options) -> goalsBlock = new CsfTaskManager.Views.goalsView() routes: "!/": "root", some other routes... And finally view: class CsfTaskManager.Views.goalsView extends Backbone.View initialize: -> this.goals = new CsfTaskManager.Collections.GoalsCollection() el: $('div#app'), events: "click .add-btn": "addGoal" addGoal: -> alert('ji') HTML page has such code: <div id="app"> <div class="app-screen hidden" id="goal-form" style="display: block; "> <button class="btn" id="load"> Load </button> <h3> New Goal </h3> <div class="form-stacked"> <form accept-charset="UTF-8" action="/goals" class="new_goal" id="new_goal" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="?"><input name="authenticity_token" type="hidden" value="Pnt+V/tS1/b079M/1ZIRdw2ss1D6bvJKVh868DXRjUg="></div> <label for="goal_title">Title</label> <p></p> <input class="goal-title" id="goal_title" name="goal[title]" size="30" type="text"> <p></p> <label for="goal_note">Note</label> <p></p> <input class="goal-note" id="goal_note" name="goal[note]" size="30" type="text"> </form> </div> <p> <button class="add-btn btn"> Add </button> </p> <ul id="goals-list"></ul> </div> <table class="app-screen bordered-table" id="calendar-grid" style="display: none; "> <tbody><tr> <td colspan="2"> week </td> </tr> <tr> <td> day </td> <td> <div id="calendar"></div> </td> </tr> </tbody></table> <div class="app-screen hidden" id="role-form" style="display: none; "> <h3> New User Role </h3> <div class="form-stacked"> <form accept-charset="UTF-8" action="/roles" class="new_role" id="new_role" method="post"><div style="margin:0;padding:0;display:inline"><input name="utf8" type="hidden" value="?"><input name="authenticity_token" type="hidden" value="Pnt+V/tS1/b079M/1ZIRdw2ss1D6bvJKVh868DXRjUg="></div> <label for="role_title">Title</label> <p></p> <input class="role-title" id="role_name" name="role[name]" size="30" type="text"> <p></p> <label for="role_note">Note</label> <p></p> <input class="role-note" id="role_description" name="role[description]" size="30" type="text"> </form> </div> <p> <button class="add-btn btn"> Add </button> </p> </div> </div> So .add-btn element is nested in #app, but click on this button doesn't fire event. Where can be a trouble? Before, when I had the same app in one .js file, without of coffeescript, namespacing and backbone-rails gem, everything was allright. Bytheway, appRouter works fine, goalsView object is created successfully too, but events don't fire for some reasons. Please give me some hint, because I'm really got stuck...

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  • Properties in partial class not appearing in Data Sources window!

    - by Tim Murphy
    Entity Framework has created the required partial classes. I can add these partial classes to the Data Sources window and the properties display as expected. However, if I extend any of the classes in a separate source file these properties do not appear in the Data Sources window even after a build and refresh. All properties in partial classes across source files work as expected in the Data Sources window except when the partial class has been created with EF. EDIT: After removing the offending table for edm designer, adding back in it all works are expected. Hardly a long term solution. Anyone else come across a similar problem?

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  • Intel Core i7-4960HQ vs. 4850HQ (Haswell) [on hold]

    - by Timothy R. Butler
    I'm looking at the new MacBook Pros and trying to decide between the Core i7-4960HQ (2.6 GHz) and i7-4850 (2.3 GHz). I've found some synthetic benchmarks comparing them, but I haven't found a lot of data, so I'd appreciate any pointers to good comparisons for the Haswell family (especially these two processors). My cursory analysis seems to suggest there isn't a huge gain from the extra 300 MHz. I'd like to determine not only whether this is generally true, but also to figure out if the gains that are made in performance come at too high of cost. Is the 2.6 going to be pushing the limits of what can fit in a thin laptop without overheating? I've looked at some of Intel's documentation, but have not been able to determine what the normal and maximum operating temperature differences are for the models. In the past, there have been times that Intel's fastest models in a given range ran especially hot and/or consumed significantly more power compared to slightly slower models. Do those concerns factor into the current generation?

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  • Superfish: How to keep sub menu open after it has been clicked

    - by Roland
    I'm having the following scenario. I have a menu and if one hovers over the menu a sub menu appears and if mouse moves out the sub menu disappears, now I want the following if I click on the on a item in the sub menu, I want the sub-menu to remain open, when the new page has been loaded. I'm using superfish Jquery plugin for this. Is this possible and if how. my code in html <div id="nav"> <div id="nav2"> <ul class="sf-menu sf-navbar "> <li> <a title="HOME" class="sf-with-ul " href="/index.php?r=site/index&amp;sid=1">HOME</a> </li> </ul> <ul class="sf-menu sf-navbar"> <li> <a href="?sid=2" id="gallery" class="sf-with-ul selected_main">GALLERY</a> <ul class="subs" id="sub1"><li class="arrow"><img src="images/arrow.gif" /></li><li><a title="Kitchens" href="/index.php?r=images/sddsd&amp;id=1">Kitchens</a></li><li><a title="Vanities" href="/index.php?r=images/sddsd&amp;id=2">Vanities</a></li></ul> </li> </ul> <ul class="sf-menu sf-navbar "> <li> <a href="?sid=3" class="sf-with-ul " >ACCESSORIES</a> <ul class="subs" id=""><li class="arrow"><img src="images/arrow.gif" /></li><li><a title="Door Handles" href="/index.php?r=images/sddsd&amp;id=2">Door Handles</a></li><li><a title="Spanners" href="/index.php?r=images/sddsd&amp;id=1">Spanners</a></li></ul> </li> </ul> <ul class="sf-menu sf-navbar "> <li> <a title="CONTACT US" class="sf-with-ul " href="/index.php?r=site/contact&amp;sid=4">CONTACT US</a> </li> </ul> </div> </div> and then the superfish code $(function(){ $("ul.sf-menu").superfish({ delay: 0, speed: 'fast', autoArrows: false, dropShadows: false }); }); I've also noticed that the following css code is used to display the item left: 0; top: 2.5em; z-index: 99;

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  • Unresolved External Symbol? error lnk2019

    - by jay
    Hello, I was wondering if anyone knew what this error meant. Thanks error LNK2019: unresolved external symbol "public: void __thiscall LinkedList,class std::allocator ::LocItem *::decreasekey(class PriorityList,class std::allocator ::LocItem * const &)" (?decreasekey@?$LinkedList@HPAVLocItem@?$PriorityList@HV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@@@QAEXABQAVLocItem@?$PriorityList@HV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@@Z) referenced in function "public: void __thiscall PriorityList,class std::allocator ::decreasekey(class PriorityList,class std::allocator ::Locator)" (?decreasekey@?$PriorityList@HV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEXVLocator@1@@Z)

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  • Adding Functions to an Implementation of Vector

    - by Meursault
    I have this implementation of vector that I've been working on for a few days using examples from a textbook: #include <iostream> #include <string> #include <cassert> #include <algorithm> #include <cstring> // Vector.h using namespace std; template <class T> class Vector { public: typedef T * iterator; Vector(); Vector(unsigned int size); Vector(unsigned int size, const T & initial); Vector(const Vector<T> & v); // copy constructor ~Vector(); unsigned int capacity() const; // return capacity of vector (in elements) unsigned int size() const; // return the number of elements in the vector bool empty() const; iterator begin(); // return an iterator pointing to the first element iterator end(); // return an iterator pointing to one past the last element T & front(); // return a reference to the first element T & back(); // return a reference to the last element void push_back(const T & value); // add a new element void pop_back(); // remove the last element void reserve(unsigned int capacity); // adjust capacity void resize(unsigned int size); // adjust size void erase(unsigned int size); // deletes an element from the vector T & operator[](unsigned int index); // return reference to numbered element Vector<T> & operator=(const Vector<T> &); private: unsigned int my_size; unsigned int my_capacity; T * buffer; }; template<class T>// Vector<T>::Vector() { my_capacity = 0; my_size = 0; buffer = 0; } template<class T> Vector<T>::Vector(const Vector<T> & v) { my_size = v.my_size; my_capacity = v.my_capacity; buffer = new T[my_size]; for (int i = 0; i < my_size; i++) buffer[i] = v.buffer[i]; } template<class T>// Vector<T>::Vector(unsigned int size) { my_capacity = size; my_size = size; buffer = new T[size]; } template<class T>// Vector<T>::Vector(unsigned int size, const T & initial) { my_size = size; //added = size my_capacity = size; buffer = new T [size]; for (int i = 0; i < size; i++) buffer[i] = initial; } template<class T>// Vector<T> & Vector<T>::operator = (const Vector<T> & v) { delete[ ] buffer; my_size = v.my_size; my_capacity = v.my_capacity; buffer = new T [my_size]; for (int i = 0; i < my_size; i++) buffer[i] = v.buffer[i]; return *this; } template<class T>// typename Vector<T>::iterator Vector<T>::begin() { return buffer; } template<class T>// typename Vector<T>::iterator Vector<T>::end() { return buffer + size(); } template<class T>// T& Vector<T>::Vector<T>::front() { return buffer[0]; } template<class T>// T& Vector<T>::Vector<T>::back() { return buffer[size - 1]; } template<class T> void Vector<T>::push_back(const T & v) { if (my_size >= my_capacity) reserve(my_capacity +5); buffer [my_size++] = v; } template<class T>// void Vector<T>::pop_back() { my_size--; } template<class T>// void Vector<T>::reserve(unsigned int capacity) { if(buffer == 0) { my_size = 0; my_capacity = 0; } if (capacity <= my_capacity) return; T * new_buffer = new T [capacity]; assert(new_buffer); copy (buffer, buffer + my_size, new_buffer); my_capacity = capacity; delete[] buffer; buffer = new_buffer; } template<class T>// unsigned int Vector<T>::size()const { return my_size; } template<class T>// void Vector<T>::resize(unsigned int size) { reserve(size); my_size = size; } template<class T>// T& Vector<T>::operator[](unsigned int index) { return buffer[index]; } template<class T>// unsigned int Vector<T>::capacity()const { return my_capacity; } template<class T>// Vector<T>::~Vector() { delete[]buffer; } template<class T> void Vector<T>::erase(unsigned int size) { } int main() { Vector<int> v; v.reserve(2); assert(v.capacity() == 2); Vector<string> v1(2); assert(v1.capacity() == 2); assert(v1.size() == 2); assert(v1[0] == ""); assert(v1[1] == ""); v1[0] = "hi"; assert(v1[0] == "hi"); Vector<int> v2(2, 7); assert(v2[1] == 7); Vector<int> v10(v2); assert(v10[1] == 7); Vector<string> v3(2, "hello"); assert(v3.size() == 2); assert(v3.capacity() == 2); assert(v3[0] == "hello"); assert(v3[1] == "hello"); v3.resize(1); assert(v3.size() == 1); assert(v3[0] == "hello"); Vector<string> v4 = v3; assert(v4.size() == 1); assert(v4[0] == v3[0]); v3[0] = "test"; assert(v4[0] != v3[0]); assert(v4[0] == "hello"); v3.pop_back(); assert(v3.size() == 0); Vector<int> v5(7, 9); Vector<int>::iterator it = v5.begin(); while (it != v5.end()) { assert(*it == 9); ++it; } Vector<int> v6; v6.push_back(100); assert(v6.size() == 1); assert(v6[0] == 100); v6.push_back(101); assert(v6.size() == 2); assert(v6[0] == 100); v6.push_back(101); cout << "SUCCESS\n"; } So far it works pretty well, but I want to add a couple of functions to it that I can't find examples for, a SWAP function that would look at two elements of the vector and switch their values and and an ERASE function that would delete a specific value or range of values in the vector. How should I begin implementing the two extra functions?

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  • Fluent | Nhibernate multiple inheritance mapping?

    - by Broken Pipe
    I'm trying to map this classes: public interface IBusinessObject { Guid Id { get; set; } } public class Product { public virtual Guid Id { get; set; } public virtual int ProductTypeId { get; set; } } public class ProductWeSell : Product, IBusinessObject { } public class ProductWeDontSell : Product { } Using this Fluent mapping code: public class IBusinessObjectMap : ClassMap<IBusinessObject> { public IBusinessObjectMap() { Id(t => t.Id).GeneratedBy.Guid(); Table("BusinessObject"); } } public class ProductMap : ClassMap<Product> { public ProductMap() { Id(t => t.Id); DiscriminateSubClassesOnColumn("ProductTypeId", "null").Nullable(); } } public class ProductWeSellMap : SubclassMap<ProductWeSell> { public ProductWeSellMap() { DiscriminatorValue(1); KeyColumn("Id"); } } public class ProductWeDontSellMap : SubclassMap<ProductWeDontSell> { public ProductWeDontSellMap() { DiscriminatorValue(2); KeyColumn("Id"); } } But I get {"Duplicate class/entity mapping ProductWeSell"} error. And if we take a look at generated HBM, indeed it's duplicated, but i have no idea how to write this mapping without duplicating it if it's possible at all. Produced hbm: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> <class xmlns="urn:nhibernate-mapping-2.2" name="IBusinessObject" table="BusinessObject"> <joined-subclass name="ProductWeSell" table="ProductWeSell"/> </class> </hibernate-mapping> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"> <class xmlns="urn:nhibernate-mapping-2.2" discriminator-value="null" name="Product" table="Product"> <discriminator type="String"> <column name="ProductTypeId" not-null="false" /> </discriminator> <subclass name="ProductWeDontSell" discriminator-value="2" /> <subclass name="ProductWeSell" discriminator-value="1" /> </class> </hibernate-mapping> So far I was unable to figure out how to map this using fluent Nhibernate (i haven't tried mapping this using hmb files). Any help appreciated Fluent or HBM files. The thing I'm trying to solve look identical to this topic: NHibernate inheritance mapping question

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  • multiple-inheritance substitution

    - by Luigi
    I want to write a module (framework specific), that would wrap and extend Facebook PHP-sdk (https://github.com/facebook/php-sdk/). My problem is - how to organize classes, in a nice way. So getting into details - Facebook PHP-sdk consists of two classes: BaseFacebook - abstract class with all the stuff sdk does Facebook - extends BaseFacebook, and implements parent abstract persistance-related methods with default session usage Now I have some functionality to add: Facebook class substitution, integrated with framework session class shorthand methods, that run api calls, I use mostly (through BaseFacebook::api()), authorization methods, so i don't have to rewrite this logic every time, configuration, sucked up from framework classes, insted of passed as params caching, integrated with framework cache module I know something has gone very wrong, because I have too much inheritance that doesn't look very normal.Wrapping everything in one "complex extension" class also seems too much. I think I should have few working togheter classes - but i get into problems like: if cache class doesn't really extend and override BaseFacebook::api() method - shorthand and authentication classes won't be able to use the caching. Maybe some kind of a pattern would be right in here? How would you organize these classes and their dependencies? EDIT 04.07.2012 Bits of code, related to the topic: This is how the base class of Facebook PHP-sdk: abstract class BaseFacebook { // ... some methods public function api(/* polymorphic */) { // ... method, that makes api calls } public function getUser() { // ... tries to get user id from session } // ... other methods abstract protected function setPersistentData($key, $value); abstract protected function getPersistentData($key, $default = false); // ... few more abstract methods } Normaly Facebook class extends it, and impelements those abstract methods. I replaced it with my substitude - Facebook_Session class: class Facebook_Session extends BaseFacebook { protected function setPersistentData($key, $value) { // ... method body } protected function getPersistentData($key, $default = false) { // ... method body } // ... implementation of other abstract functions from BaseFacebook } Ok, then I extend this more with shorthand methods and configuration variables: class Facebook_Custom extends Facebook_Session { public funtion __construct() { // ... call parent's constructor with parameters from framework config } public function api_batch() { // ... a wrapper for parent's api() method return $this->api('/?batch=' . json_encode($calls), 'POST'); } public function redirect_to_auth_dialog() { // method body } // ... more methods like this, for common queries / authorization } I'm not sure, if this isn't too much for a single class ( authorization / shorthand methods / configuration). Then there comes another extending layer - cache: class Facebook_Cache extends Facebook_Custom { public function api() { $cache_file_identifier = $this->getUser(); if(/* cache_file_identifier is not null and found a valid file with cached query result */) { // return the result } else { try { // call Facebook_Custom::api, cache and return the result } catch(FacebookApiException $e) { // if Access Token is expired force refreshing it parent::redirect_to_auth_dialog(); } } } // .. some other stuff related to caching } Now this pretty much works. New instance of Facebook_Cache gives me all the functionality. Shorthand methods from Facebook_Custom use caching, because Facebook_Cache overwrited api() method. But here is what is bothering me: I think it's too much inheritance. It's all very tight coupled - like look how i had to specify 'Facebook_Custom::api' instead of 'parent:api', to avoid api() method loop on Facebook_Cache class extending. Overall mess and ugliness. So again, this works but I'm just asking about patterns / ways of doing this in a cleaner and smarter way.

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  • Loose Coupling vs. Information Hiding and Ease of Change

    - by cretzel
    I'm just reading Code Complete by Steve McConell and I'm thinking of an Example he gives in a section about loose coupling. It's about the interface of a method that calculates the number of holidays for an employee, which is calculated from the entry date of the employee and her sales. The author suggests a to have entry date and sales as the parameters of the method instead of an instance of the employee: int holidays(Date entryDate, Number sales) instead of int holidays(Employee emp) The argument is that this decouples the client of the method because it does not need to know anything about the Employee class. Two things came to my mind: Providing all the parameters that are needed for the calculation breaks encapsulation. It shows the internals of the method on how it computes the result. It's harder to change, e.g. when someone decides that also the age of the employee should be included in the calculation. One would have to change the signature. What's your opinion?

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  • Security risk of JIRA standalone installation running JRE version 1.6.0_26 vs 1.6.0_29 (latest)

    - by kayaker243
    Atlassian recently introduced a standalone installer that installs JIRA, along with its own JRE. Unfortunately the JRE Atlassian bundles with this installer is 1.6.0_26, whereas the current version of the JRE is 1.6.0_29. This is potentially concerning given there were vulnerabilities in _26 that were fixed in the subsequent versions. We are currently using the bundled-installer version of JIRA and one contractor has recommended we ditch this for the system-installed JRE. My question is this: what is the actual security risk of continuing to use the _26 version of the JRE included in the bundled installer? There is no public access to our install of JIRA (only about 20 employees and contractors can login to our JIRA) and it's only accessible on a subdomain of a domain at which there's no publicly-available website. If there's a not insignificant risk inherent in sticking with the older JRE, why hasn't Atlassian upgraded the default JRE?

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  • Tabular (X)HTML forms

    - by detly
    I have a set of items that can be in various states. I want to allow a user to use an (X)HTML form to change the state, and easily view the state of a group of objects ...so to this end, I'd like a layout like: | item1 | radio button for state 1 | radio for state 2 | ... | [update button] | | item2 | radio button for state 1 | radio for state 2 | ... | [update button] | etc. I prefer the radio buttons to list boxes so that it's easy for a user to visually scan for things in a certain state. It seemed like perfectly tabular data to me. The only problem is, you can't have forms inside a table that cross table cells (ie. <tr> <form> <td> ... is invalid). I thought, "hey, I could have one giant form wrapping a table, and make the [update button] value contain the IDs for each row!" Turns out certain versions of IE send ALL THE SUBMIT BUTTON VALUES on any single form. So I thought perhaps to to lay it out with <div>s and place the forms inside a single <td>. But then they break a line on each <div>. So I fixed their width and made them float: left. But then they wrap inside the table cells if the table row is wider than the page, and the radio controls don't line up with the headings. Is it possible to lay this out as I intend? The XHTML below shows the intended structure. Observe what happens if you resize the browser window below the width of the table (ideally, the name would break or the table would show a scroll bar). <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head><title>Test</title> <style type="text/css"> .state-select, .thing-state-name, .update { float: left; width: 8em; } .state-select { text-align: center; } </style> </head> <body> <table> <thead> <tr> <th class="thing-name-header">Thing</th> <th> <div class="thing-state-name">Present</div> <div class="thing-state-name">Absent</div> <div class="thing-state-name">Haven't looked</div> </th> </tr> </thead> <tbody> <tr> <td>Apple</td> <td> <form action="something" method="post"> <input type="hidden" name="id" value="1" /> <div class="state-select"><input type="radio" name="presence" value="present" checked="checked" /></div> <div class="state-select"><input type="radio" name="presence" value="absent" /></div> <div class="state-select"><input type="radio" name="presence" value="unknown" /></div> <div class="update"><input type="submit" value="Update" /></div> </form> </td></tr> <tr> <td>Orange</td> <td> <form action="something" method="post"> <input type="hidden" name="id" value="2" /> <div class="state-select"><input type="radio" name="presence" value="present" /></div> <div class="state-select"><input type="radio" name="presence" value="absent" checked="checked" /></div> <div class="state-select"><input type="radio" name="presence" value="unknown" /></div> <div class="update"><input type="submit" value="Update" /></div> </form> </td></tr> <tr> <td>David Bowie</td> <td> <form action="something" method="post"> <input type="hidden" name="id" value="3" /> <div class="state-select"><input type="radio" name="presence" value="present" /></div> <div class="state-select"><input type="radio" name="presence" value="absent" /></div> <div class="state-select"><input type="radio" name="presence" value="unknown" checked="checked" /></div> <div class="update"><input type="submit" value="Update" /></div> </form> </td></tr> </tbody> </table> </body> </html>

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  • Performance difference between MacBook Pro (2.8 GHz) vs Air (1.7 GHz)?

    - by jonathanconway
    I'm comparing these two Apple laptops: MacBook Pro (13", 2011 model): 2.8GHz dual-core Intel Core i7 processor with 4MB shared L3 cache 4GB (two 2GB SO-DIMMs) of 1333MHz DDR3 SDRAM AMD Radeon HD 6770M graphics processor with 1GB of GDDR5 memory on 2.4GHz configuration MacBook Air (13", 2011 model): 1.7GHz dual-core Intel Core i5 with 3MB shared L3 cache 4GB of 1333MHz DDR3 onboard memory Intel HD Graphics 3000 processor with 384MB of DDR3 SDRAM shared with main memory There's definitely a gap between them in terms of CPU speed and graphics, but what practical difference would this make on a day-to-day basis? On the one hand, I love the sleek, thin appearance of the Air. On the other hand, I don't want a machine that's going to be dog-slow when doing tasks such as running Virtual Machines, dual-booting to Windows and running multiple instances of Visual Studio, and maybe some light gaming. Is there going to be a major difference that makes the MacBook Pro a more attractive purchase?

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  • java servlet programming errror

    - by abson
    C:\Tomcat5.5\webapps\WEB-INF\classes>javac MyServlet.java MyServlet.java:2: package javax.servlet does not exist import javax.servlet.*; ^ MyServlet.java:3: package javax.servlet.http does not exist import javax.servlet.http.*; ^ MyServlet.java:5: cannot find symbol symbol: class HttpServlet public class MyServlet extends HttpServlet ^ MyServlet.java:7: cannot find symbol symbol : class HttpServletRequest location: class MyServlet public void doGet(HttpServletRequest req, HttpServletResponse res) throws Serv letException,IOException ^ MyServlet.java:7: cannot find symbol symbol : class HttpServletResponse location: class MyServlet public void doGet(HttpServletRequest req, HttpServletResponse res) throws Serv letException,IOException ^ MyServlet.java:7: cannot find symbol symbol : class ServletException location: class MyServlet public void doGet(HttpServletRequest req, HttpServletResponse res) throws Serv letException,IOException ^ 6 errors

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  • Is there any way to automatically break into debugger when my class library functions are getting ca

    - by mishal153
    I have a managed class library (say mylib.dll) and a 3rd party managed app (say app.exe) which is using mylib.dll. I have the code of mylib.dll but not of the app.exe. So currently what i do is i build mylib.dll, copy it to app.exe's directory, start app.exe and attach to the process. That way if i put breakpoints in code mylib.dll , i see them being hit. But is there anyway to automatically break in code of mylib.dll whenever any external application calls one of its exposed methods ? ie. Only for entrypoints of the dll. thanks, Mishal

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  • running localhost mta vs. php smtp'ing via 3rd party api

    - by nandoP
    so the question is, would it be "better" to run localhost mta (ie. postfix) or "better" to use 3rd party restful api, embedded in the application, to send email? i am curious what people would do here. i find postfix on linux allows much greater flexibility and control. the default sendmail/postfix logging (/var/log/maillog) suits me fine, and you can even set limits via iptables on per uuid's which allows rate-limiting apps.

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  • Why is SMB from a Windows 7 64-bit to OS X Server so slow when using DNS vs IP?

    - by chuboy
    When I connect my 64-bit Windows 7 to a OS X server using \servername, my transfer rates are around 400KB/s. However, when I do the same thing using \192.168.0.10 (which is the IP of the server), transfer rates jump to 30MB/s. All of this happens via a gigabit ethernet cable with my wireless disabled I heard Samba itself "doesn't use DNS", but if that's the case, how am I able to connect to the server in the first place?

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  • rhel/centos vs. ubuntu (possibly other debian-based systems) linux in handling duplicate ips in the same subnet

    - by johnshen64
    This has bothered me for quite a while but I never found out why or how to change the behavior. ip duplicates could be caused by typos or dhcp errors etc., but they do occur from time to time. in rpm-based systems such as centos, the old server with the duplicate ip wins, and the new server will get an error in bringing up the nic (ip address already used). this is somewhat harmless because we can just fix the system that is coming up. ubuntu only the other hand happily grabs the used ip for itself and leave the old server/device without a valid ip. this is the more dangerous behavior because it causes outages. what i want is to change the ubuntu behavior to that of the centos/rhel so would appreciate any help.

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  • IIS displaying page differently when localhost is used in URL vs. hostname

    - by maik
    I'm having (yet another) strange problem with IIS. When viewing an ASPX page I've designed on my local machine by browsing to http://localhost/page.aspx the page looks as expected (and looks the same in IE, Firefox and Chrome. If I change localhost to my_hostname the page is rendered with a disabled vertical scroll bar. The behavior was first noticed when I published my site to our live server and saw the same discrepancy. After beating my head against the wall I tried what I described above and was able to duplicate my "problem". So with that, I turn to you guys. This wouldn't really be an issue (save for the cross-browser inconsistency) except that this screws up an "absolute"ly positioned <div> moving it partway off the screen instead of being centered like it should be (and is when viewed any other way except in IE when the address is anything but localhost).

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  • JQuery traverse DOM and extract node value

    - by Alex
    I have the following DOM: <div class="qtip qtip-light qtip-active"> <div class="qtip-wrapper"> <div class="qtip-borderTop"></div> <div class="qtip-contentWrapper"> <div class="qtip-title"> <div class="qtip-button"></div> **Text I need to extract** </div> <div class="qtip-content"> <div class="tooltip"> <div class="button-container"> <script type="text/javascript"> var link = null; var link = $('.qtip-active > .qtip-title').val(); $('.qtip-active > #button-container').append('<a href=\"mailto:' + link + '\">' + link + '</a>'); </script> </div> </div> </div> </div> <div class="qtip-borderBottom"></div> </div> </div> But the variable link is always undefined when I would expect it to return the text the node specified. I've been reading the jquery documentation for a few hours but I must be missing something with my logic (or lack there of). Any help appreciated...

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  • How to call WCF Service Method Asycroniously from Class file?

    - by stackuser1
    I've added WCF Service reference to my asp.net application and configured that reference to support asncronious calls. From asp.net code behind files, i'm able to call the service methods asyncroniously like the bellow sample code. protected void Button1_Click(object sender, EventArgs e) { PageAsyncTask pat = new PageAsyncTask(BeiginGetDataAsync, EndDataRetrieveAsync, null, null); Page.RegisterAsyncTask(pat); } IAsyncResult BeiginGetDataAsync(object sender, EventArgs e, AsyncCallback async, object extractData) { svc = new Service1Client(); return svc.BeginGetData(656,async, extractData); } void EndDataRetrieveAsync(IAsyncResult ar) { Label1.Text = svc.EndGetData(ar); } and in page directive added Async="true" In this scenario it is working fine. But from UI i'm not supposed to call the service methods directly. I need to call all service methods from a static class and from code behind file i need to invoke the static method. In this scenario what exactlly do i need to do?

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  • NGINX : Proxy pass intercepting 5xx errors - Possible to differentiate between ones fired by backed vs ones fired by nginx itself?

    - by anonymous-one
    We use proxy_intercept_errors ( http://wiki.nginx.org/HttpProxyModule#proxy_intercept_errors ) with our backends. We intercept a number of status codes, including a few 5xx ones. Our 5xx (each 500 has its own) handler has an access_log so we can see all the 5xx errors returned to the user in a nice clean logged format. The issue with this is that as it stands now, we cannot tell weather a 5xx was returned to the user by nginx or intercepted from our backend. Is there any way to differentiate between the two? Thanks.

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  • Tricky compiler behavior

    - by Neeraj
    Simple java code snippet. It has three classes. After compiling the code please delete A.class and then execute the code. Code still runs, why its not checking whether the byte code of A exists or not? class A { static { System.out.println("In the class A"); } public A() { } } class B { private A a = null; static { System.out.println("In the class B"); } public B() { a = new A(); } } public class ExampleLinkage { static { System.out.println("In the class A"); } public ExampleLinkage(String str) { } public static void main(String args[]) { try { System.out.println("In the main method of ExampleLinkage"); Class.forName("com.bt.rtti.B"); } catch(Exception e) { e.printStackTrace(); } } }

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  • How should I provide access to this custom DAL?

    - by Casey
    I'm writing a custom DAL (VB.NET) for an ordering system project. I'd like to explain how it is coded now, and receive some alternate ideas to make coding against the DAL easier/more readable. The DAL is part of an n-tier (not n-layer) application, where each tier is in it's own assembly/DLL. The DAL consists of several classes that have specific behavior. For instance, there is an Order class that is responsible for retrieving and saving orders. Most of the classes have only two methods, a "Get" and a "Save," with multiple overloads for each. These classes are marked as Friend and are only visible to the DAL (which is in it's own assembly). In most cases, the DAL returns what I will call a "Data Object." This object is a class that contains only data and validation, and is located in a common assembly that both the BLL and DAL can read. To provide public access to the DAL, I currently have a static (module) class that has many shared members. A simplified version looks something like this: Public Class DAL Private Sub New End Sub Public Shared Function GetOrder(OrderID as String) as OrderData Dim OrderGetter as New OrderClass Return OrderGetter.GetOrder(OrderID) End Function End Class Friend Class OrderClass Friend Function GetOrder(OrderID as string) as OrderData End Function End Class The BLL would call for an order like this: DAL.GetOrder("123456") As you can imagine, this gets cumbersome very quickly. I'm mainly interested in structuring access to the DAL so that Intellisense is very intuitive. As it stands now, there are too many methods/functions in the DAL class with similar names. One idea I had is to break down the DAL into nested classes: Public Class DAL Private Sub New End Sub Public Class Orders Private Sub New End Sub Public Shared Function Get(OrderID as string) as OrderData End Function End Class End Class So the BLL would call like this: DAL.Orders.Get("12345") This cleans it up a bit, but it leaves a lot of classes that only have references to other classes, which I don't like for some reason. Without resorting to passing DB specific instructions (like where clauses) from BLL to DAL, what is the best or most common practice for providing a single point of access for the DAL?

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  • C# Sharp: Partial Classes

    - by dcolumbus
    This is quick confirmation question: In order to make partial classes work, I initially thought that there would be a main Class public class ManageDates and then you would create partial classes like public partial class ManageDates to extend the ManageDates class. But from some experiementing, I've come to find out that if you're going to use partial classes, each individual class must be declared public partial class [ClassName] ... Am I correct in this conclusion?

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  • XPS vs PDF. What's the status?

    - by Redandwhite
    XPS, the PDF alternative, seems to be almost dead in the water. That said, Windows 7 offers a built-in XPS printer and viewer. I believe Vista also offers a built-in printer. XPS seems lighter than PDF, perhaps it only appears so because of Adobe's bloated reader, but that's for another discussion. Is it worth it to begin encoding in XPS instead of PDF? Will Vista or above be able to read it without problems? What should I look out for?

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