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  • Windows Azure Recipe: Software as a Service (SaaS)

    - by Clint Edmonson
    The cloud was tailor built for aspiring companies to create innovative internet based applications and solutions. Whether you’re a garage startup with very little capital or a Fortune 1000 company, the ability to quickly setup, deliver, and iterate on new products is key to capturing market and mind share. And if you can capture that share and go viral, having resiliency and infinite scale at your finger tips is great peace of mind. Drivers Cost avoidance Time to market Scalability Solution Here’s a sketch of how a basic Software as a Service solution might be built out: Ingredients Web Role – this hosts the core web application. Each web role will host an instance of the software and as the user base grows, additional roles can be spun up to meet demand. Access Control – this service is essential to managing user identity. It’s backed by a full blown implementation of Active Directory and allows the definition and management of users, groups, and roles. A pre-built ASP.NET membership provider is included in the training kit to leverage this capability but it’s also flexible enough to be combined with external Identity providers including Windows LiveID, Google, Yahoo!, and Facebook. The provider model provides extensibility to hook into other industry specific identity providers as well. Databases – nearly every modern SaaS application is backed by a relational database for its core operational data. If the solution is sold to organizations, there’s a good chance multi-tenancy will be needed. An emerging best practice for SaaS applications is to stand up separate SQL Azure database instances for each tenant’s proprietary data to ensure isolation from other tenants. Worker Role – this is the best place to handle autonomous background processing such as data aggregation, billing through external services, and other specialized tasks that can be performed asynchronously. Placing these tasks in a worker role frees the web roles to focus completely on user interaction and data input and provides finer grained control over the system’s scalability and throughput. Caching (optional) – as a web site traffic grows caching can be leveraged to keep frequently used read-only, user specific, and application resource data in a high-speed distributed in-memory for faster response times and ultimately higher scalability without spinning up more web and worker roles. It includes a token based security model that works alongside the Access Control service. Blobs (optional) – depending on the nature of the software, users may be creating or uploading large volumes of heterogeneous data such as documents or rich media. Blob storage provides a scalable, resilient way to store terabytes of user data. The storage facilities can also integrate with the Access Control service to ensure users’ data is delivered securely. Training & Examples These links point to online Windows Azure training labs and examples where you can learn more about the individual ingredients described above. (Note: The entire Windows Azure Training Kit can also be downloaded for offline use.) Windows Azure (16 labs) Windows Azure is an internet-scale cloud computing and services platform hosted in Microsoft data centers, which provides an operating system and a set of developer services which can be used individually or together. It gives developers the choice to build web applications; applications running on connected devices, PCs, or servers; or hybrid solutions offering the best of both worlds. New or enhanced applications can be built using existing skills with the Visual Studio development environment and the .NET Framework. With its standards-based and interoperable approach, the services platform supports multiple internet protocols, including HTTP, REST, SOAP, and plain XML SQL Azure (7 labs) Microsoft SQL Azure delivers on the Microsoft Data Platform vision of extending the SQL Server capabilities to the cloud as web-based services, enabling you to store structured, semi-structured, and unstructured data. Windows Azure Services (9 labs) As applications collaborate across organizational boundaries, ensuring secure transactions across disparate security domains is crucial but difficult to implement. Windows Azure Services provides hosted authentication and access control using powerful, secure, standards-based infrastructure. Developing Applications for the Cloud, 2nd Edition (eBook) This book demonstrates how you can create from scratch a multi-tenant, Software as a Service (SaaS) application to run in the cloud using the latest versions of the Windows Azure Platform and tools. The book is intended for any architect, developer, or information technology (IT) professional who designs, builds, or operates applications and services that run on or interact with the cloud. Fabrikam Shipping (SaaS reference application) This is a full end to end sample scenario which demonstrates how to use the Windows Azure platform for exposing an application as a service. We developed this demo just as you would: we had an existing on-premises sample, Fabrikam Shipping, and we wanted to see what it would take to transform it in a full subscription based solution. The demo you find here is the result of that investigation See my Windows Azure Resource Guide for more guidance on how to get started, including more links web portals, training kits, samples, and blogs related to Windows Azure.

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  • How to hack Drupal

    - by Ryan Nelson
    Does anyone know how to hack into a Drupal site? This is for ethical purposes, just a contest with me and my friend to see who can hack each other the most. He's got a Drupal site I need to get past. Anyone know how? Anything is useful (Gaining admin access, modifying stuff, etc.) Thanks!

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  • Android WebView wrap-content

    - by Javadid
    Hi Friend... a simple question... Is it possible to Load a URL in a webView and resize it to fit the screen... i Mean i want to make the WebPage small so that the user doesnt need to scroll... IS it possible????

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  • Binding not writing to datasource on .NET Compact Framework Form -- works on Full Framework

    - by Dave Welling
    I have a problem with a bound user control writing back to it's datasource on a NetCF forms application. The application is too complex to post code, so I made a toy version to show you. I create a form, usercontrol with a combobox, a class (testBind) and another class (TestLookup). I bind a property of the usercontrol ("value") to a property ("selectedValue") on the testBind class. The testBind class implements INotifyPropertyChanged. I create a few fascade methods on the user control to bind the contained combobox to a BindingList(of TestLookup). I create a button to show the value of the testBind bound property (in a MessageBox). The messagebox returns "-1" every time regardless of the combobox entry selected. I can take the EXACT same code, paste it in a full framework Forms app and it will return the correct value of the selected combobox entry. Imports System.ComponentModel Public Class Form2 Inherits Form Private _testBind1 As testBind Private _testUserControlX As UserControlX Friend WithEvents _buttonX As System.Windows.Forms.Button Public Sub New() _buttonX = New System.Windows.Forms.Button _buttonX.Location = New System.Drawing.Point(126, 228) _buttonX.Size = New System.Drawing.Size(70, 21) _testBind1 = New testBind _testUserControlX = New UserControlX() Dim _lookup As New System.ComponentModel.BindingList(Of TestLookup)() _lookup.Add(New TestLookup(1, "text1")) _lookup.Add(New TestLookup(2, "text2")) _testUserControlX.DataSource = _lookup _testUserControlX.DisplayMember = "Text" _testUserControlX.ValueMember = "ID" _testUserControlX.DataBindings.Add("Value", _testBind1, "SelectedID", False, DataSourceUpdateMode.OnValidation) MinimizeBox = False Controls.Add(_testUserControlX) Controls.Add(_buttonX) End Sub Private Sub ButtonX_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _buttonX.Click MessageBox.Show(_testBind1.SelectedID.ToString()) End Sub Public Class testBind Implements System.ComponentModel.INotifyPropertyChanged Private _selectedRow As Integer = -1 Public Event PropertyChanged(ByVal sender As Object, ByVal e As System.ComponentModel.PropertyChangedEventArgs) Implements System.ComponentModel.INotifyPropertyChanged.PropertyChanged Protected Sub OnPropertyChanged(ByVal PropertyName As String) RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(PropertyName)) End Sub Public Property SelectedID() As Integer Get Return _selectedRow End Get Set(ByVal value As Integer) _selectedRow = value OnPropertyChanged("SelectedID") End Set End Property End Class Public Class TestLookup Private _text As String Private _id As Integer Public Sub New(ByVal id As Integer, ByVal text As String) _text = text _id = id End Sub Public Property ID() As Integer Get Return _id End Get Set(ByVal value As Integer) _id = value End Set End Property Public Property Text() As String Get Return _text End Get Set(ByVal value As String) _text = value End Set End Property End Class End Class Public Class UserControlX Inherits System.Windows.Forms.UserControl Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox Public Sub New() Me.ComboBox1 = New System.Windows.Forms.ComboBox Me.Controls.Add(Me.ComboBox1) End Sub Public Property Value() As Integer Get Return ComboBox1.SelectedValue End Get Set(ByVal value As Integer) ComboBox1.SelectedValue = value End Set End Property Public Property DataSource() As Object Get Return ComboBox1.DataSource End Get Set(ByVal value As Object) ComboBox1.DataSource = value End Set End Property Public Property ValueMember() As String Get Return ComboBox1.ValueMember End Get Set(ByVal value As String) ComboBox1.ValueMember = value End Set End Property Public Property DisplayMember() As String Get Return ComboBox1.DisplayMember End Get Set(ByVal value As String) ComboBox1.DisplayMember = value End Set End Property End Class

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  • Invalid Entitlement.plist for my iphone?

    - by Rajendra Bhole
    Hi, i m sending .ipa file and ad-hoc provisional profile to my friend for installing my application in his iphone through itunes of windowsXP But it shows invalid entitlement.plist for his iphone. please reply me as soon as possible, Thanks in advance for sending me answer.

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  • What's the Easiest Way to Learn Programming?

    - by Chris
    If a friend of yours wanted to get into development and didn't have any experience, what would you suggest? What language/resources would you suggest to break into programming? With all of the technologies out right now and buzz words where should one even start explaining this stuff to people?

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  • Language for non-programmers to start learning programming

    - by zarawesome
    A non-programmer friend will be starting the Computer Science college course in a few months. I'd like her to try her hand at some programming before she starts her studies (the course itself expects one to know C, but it's an horrible language to learn to program at). What language would be the best to do so? Related question: Best ways to teach a beginner to program?

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  • UIWebView Page Control

    - by Jack
    Hi, I would like to use a UIWebView to display some files (PDF, PPT, DOC) and would like to have the ability to scroll using external controls (ie a couple of buttons that, when pressed skip back and forward a page) and display the current page in a UITextView. Is this possible? I have no experience with javascript, but a friend of mine has suggested that this might be a useful approach. Is his suggestion valid? JP

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  • iPhone OS 4.0 backwards compatible with 3.1/.2

    - by Typeoneerror
    Title says it all. I'm building an iPhone application with a base SDK target of 3.1.x. I've got a friend who offered to test it on the OS 4.0 beta, but I'm wondering in advance if I should bother. Will my application run under 4.0 or is it not backwards compatible? I have to imagine it will since apps built for 2.x run on 3.x just fine AFAIK. Any gotchas?

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  • FQL: Facebook application php

    - by user341879
    Hello I have implemented the following $fql = "SELECT uid2 FROM friend WHERE uid1=" . $uid; $param = array( 'method' = 'fql.query', 'query' = $fql, 'callback' = '' ); $fqlResult = $facebook-api($param); Now I need to fetch elements from $ fqlResult. How should I do this??

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  • JEE6 Advice - how viable is it?

    - by user294740
    Hello! A friend and I are trying to start our own UK based business. We both know Java and thought we'd try to implement it using JEE6 and JSP. Can anyone offer some advice on how viable it would be and provide us with resources to consult?

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  • In Netbeans 6.8 cant find org.netbeans package

    - by Rohit
    I have netbeans 6.8 with java ME platform setup on my ubuntu 9.10. My code requires the package org.netbeans.microedition.lcdui which is either not installed or not in the path. Surprising this runs perfectly in netbeans 6.8 on windows on my friend's pc. Is there any java ME plugin I need to install? Can somebody help me out with this? Thanks in advance.

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  • Android Soft Keyboard Keys Layout

    - by Shubh
    Hi friend, I am trying to build an Android Soft keyboard application using avail code at http://developer.android.com/resources/samples/SoftKeyboard/index.html I want to rounded key like iPhone. please suggest me. Thanks in Advance.

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  • pass value through url

    - by shishir.bobby
    hi all, i hv a question. my url is some thing like this http://www.google.com?to=shishir&from=friend and i hv 2 textfeild from where i m getting value of to and from. i need to set those values of 2 textfeiilds into the URL to="values from textfeild" from="value from textfeild" to create a somewhat called a dynamic URL. how can i do it quick reply is always appreciated regards shishir

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  • VBScript file open dialog that works in XP and Vista?

    - by codeulike
    In XP, you can use VBScript with the UserAccounts.CommonDialog object to bring up a File Open dialog (as described here), but apparently this does not work under Vista. Is there a VBScript method for File-Open dialogs that will work for both? Or even one that will work nicely for Vista? Disclaimer: I'm a proper programmer, honest, and don't usually work with VBScript - I am asking this question 'for a friend'.

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  • Hbase / Hadoop Query Help

    - by zechariahs
    I'm working on a project with a friend that will utilize Hbase to store it's data. Are there any good query examples? I seem to be writing a ton of Java code to iterate through lists of RowResult's when, in SQL land, I could write a simple query. Am I missing something? Or is Hbase missing something?

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  • Could this code damage my processor??!!

    - by Osama Gamal
    A friend sent me that code and alleges that it could damage the processor. Is that true? void damage_processor() { while (true) { // Assembly code that sets the five control registers bits to ones which causes a bunch of exceptions in the system and then damages the processor Asm( "mov cr0, 0xffffffff \n\t" "mov cr1, 0xffffffff \n\t" "mov cr2, 0xffffffff \n\t" "mov cr3, 0xffffffff \n\t" "mov cr4, 0xffffffff \n\t" ) } } Is that true?

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  • Binary Cosine Cofficient

    - by hairyyak
    I was given the following forumulae for calculating this sim=|QnD| / v|Q|v|D| I went ahed and implemented a class to compare strings consisting of a series of words #pragma once #include <vector> #include <string> #include <iostream> #include <vector> using namespace std; class StringSet { public: StringSet(void); StringSet( const string the_strings[], const int no_of_strings); ~StringSet(void); StringSet( const vector<string> the_strings); void add_string( const string the_string); bool remove_string( const string the_string); void clear_set(void); int no_of_strings(void) const; friend ostream& operator <<(ostream& outs, StringSet& the_strings); friend StringSet operator *(const StringSet& first, const StringSet& second); friend StringSet operator +(const StringSet& first, const StringSet& second); double binary_coefficient( const StringSet& the_second_set); private: vector<string> set; }; #include "StdAfx.h" #include "StringSet.h" #include <iterator> #include <algorithm> #include <stdexcept> #include <iostream> #include <cmath> StringSet::StringSet(void) { } StringSet::~StringSet(void) { } StringSet::StringSet( const vector<string> the_strings) { set = the_strings; } StringSet::StringSet( const string the_strings[], const int no_of_strings) { copy( the_strings, &the_strings[no_of_strings], back_inserter(set)); } void StringSet::add_string( const string the_string) { try { if( find( set.begin(), set.end(), the_string) == set.end()) { set.push_back(the_string); } else { //String is already in the set. throw domain_error("String is already in the set"); } } catch( domain_error e) { cout << e.what(); exit(1); } } bool StringSet::remove_string( const string the_string) { //Found the occurrence of the string. return it an iterator pointing to it. vector<string>::iterator iter; if( ( iter = find( set.begin(), set.end(), the_string) ) != set.end()) { set.erase(iter); return true; } return false; } void StringSet::clear_set(void) { set.clear(); } int StringSet::no_of_strings(void) const { return set.size(); } ostream& operator <<(ostream& outs, StringSet& the_strings) { vector<string>::const_iterator const_iter = the_strings.set.begin(); for( ; const_iter != the_strings.set.end(); const_iter++) { cout << *const_iter << " "; } cout << endl; return outs; } //This function returns the union of the two string sets. StringSet operator *(const StringSet& first, const StringSet& second) { vector<string> new_string_set; new_string_set = first.set; for( unsigned int i = 0; i < second.set.size(); i++) { vector<string>::const_iterator const_iter = find(new_string_set.begin(), new_string_set.end(), second.set[i]); //String is new - include it. if( const_iter == new_string_set.end() ) { new_string_set.push_back(second.set[i]); } } StringSet the_set(new_string_set); return the_set; } //This method returns the intersection of the two string sets. StringSet operator +(const StringSet& first, const StringSet& second) { //For each string in the first string look though the second and see if //there is a matching pair, in which case include the string in the set. vector<string> new_string_set; vector<string>::const_iterator const_iter = first.set.begin(); for ( ; const_iter != first.set.end(); ++const_iter) { //Then search through the entire second string to see if //there is a duplicate. vector<string>::const_iterator const_iter2 = second.set.begin(); for( ; const_iter2 != second.set.end(); const_iter2++) { if( *const_iter == *const_iter2 ) { new_string_set.push_back(*const_iter); } } } StringSet new_set(new_string_set); return new_set; } double StringSet::binary_coefficient( const StringSet& the_second_set) { double coefficient; StringSet intersection = the_second_set + set; coefficient = intersection.no_of_strings() / sqrt((double) no_of_strings()) * sqrt((double)the_second_set.no_of_strings()); return coefficient; } However when I try and calculate the coefficient using the following main function: // Exercise13.cpp : main project file. #include "stdafx.h" #include <boost/regex.hpp> #include "StringSet.h" using namespace System; using namespace System::Runtime::InteropServices; using namespace boost; //This function takes as input a string, which //is then broken down into a series of words //where the punctuaction is ignored. StringSet break_string( const string the_string) { regex re; cmatch matches; StringSet words; string search_pattern = "\\b(\\w)+\\b"; try { // Assign the regular expression for parsing. re = search_pattern; } catch( regex_error& e) { cout << search_pattern << " is not a valid regular expression: \"" << e.what() << "\"" << endl; exit(1); } sregex_token_iterator p(the_string.begin(), the_string.end(), re, 0); sregex_token_iterator end; for( ; p != end; ++p) { string new_string(p->first, p->second); String^ copy_han = gcnew String(new_string.c_str()); String^ copy_han2 = copy_han->ToLower(); char* str2 = (char*)(void*)Marshal::StringToHGlobalAnsi(copy_han2); string new_string2(str2); words.add_string(new_string2); } return words; } int main(array<System::String ^> ^args) { StringSet words = break_string("Here is a string, with some; words"); StringSet words2 = break_string("There is another string,"); cout << words.binary_coefficient(words2); return 0; } I get an index which is 1.5116 rather than a value from 0 to 1. Does anybody have a clue why this is the case? Any help would be appreciated.

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  • Class member functions instantiated by traits [policies, actually]

    - by Jive Dadson
    I am reluctant to say I can't figure this out, but I can't figure this out. I've googled and searched Stack Overflow, and come up empty. The abstract, and possibly overly vague form of the question is, how can I use the traits-pattern to instantiate member functions? [Update: I used the wrong term here. It should be "policies" rather than "traits." Traits describe existing classes. Policies prescribe synthetic classes.] The question came up while modernizing a set of multivariate function optimizers that I wrote more than 10 years ago. The optimizers all operate by selecting a straight-line path through the parameter space away from the current best point (the "update"), then finding a better point on that line (the "line search"), then testing for the "done" condition, and if not done, iterating. There are different methods for doing the update, the line-search, and conceivably for the done test, and other things. Mix and match. Different update formulae require different state-variable data. For example, the LMQN update requires a vector, and the BFGS update requires a matrix. If evaluating gradients is cheap, the line-search should do so. If not, it should use function evaluations only. Some methods require more accurate line-searches than others. Those are just some examples. The original version instantiates several of the combinations by means of virtual functions. Some traits are selected by setting mode bits that are tested at runtime. Yuck. It would be trivial to define the traits with #define's and the member functions with #ifdef's and macros. But that's so twenty years ago. It bugs me that I cannot figure out a whiz-bang modern way. If there were only one trait that varied, I could use the curiously recurring template pattern. But I see no way to extend that to arbitrary combinations of traits. I tried doing it using boost::enable_if, etc.. The specialized state information was easy. I managed to get the functions done, but only by resorting to non-friend external functions that have the this-pointer as a parameter. I never even figured out how to make the functions friends, much less member functions. The compiler (VC++ 2008) always complained that things didn't match. I would yell, "SFINAE, you moron!" but the moron is probably me. Perhaps tag-dispatch is the key. I haven't gotten very deeply into that. Surely it's possible, right? If so, what is best practice? UPDATE: Here's another try at explaining it. I want the user to be able to fill out an order (manifest) for a custom optimizer, something like ordering off of a Chinese menu - one from column A, one from column B, etc.. Waiter, from column A (updaters), I'll have the BFGS update with Cholesky-decompositon sauce. From column B (line-searchers), I'll have the cubic interpolation line-search with an eta of 0.4 and a rho of 1e-4, please. Etc... UPDATE: Okay, okay. Here's the playing-around that I've done. I offer it reluctantly, because I suspect it's a completely wrong-headed approach. It runs okay under vc++ 2008. #include <boost/utility.hpp> #include <boost/type_traits/integral_constant.hpp> namespace dj { struct CBFGS { void bar() {printf("CBFGS::bar %d\n", data);} CBFGS(): data(1234){} int data; }; template<class T> struct is_CBFGS: boost::false_type{}; template<> struct is_CBFGS<CBFGS>: boost::true_type{}; struct LMQN {LMQN(): data(54.321){} void bar() {printf("LMQN::bar %lf\n", data);} double data; }; template<class T> struct is_LMQN: boost::false_type{}; template<> struct is_LMQN<LMQN> : boost::true_type{}; // "Order form" struct default_optimizer_traits { typedef CBFGS update_type; // Selection from column A - updaters }; template<class traits> class Optimizer; template<class traits> void foo(typename boost::enable_if<is_LMQN<typename traits::update_type>, Optimizer<traits> >::type& self) { printf(" LMQN %lf\n", self.data); } template<class traits> void foo(typename boost::enable_if<is_CBFGS<typename traits::update_type>, Optimizer<traits> >::type& self) { printf("CBFGS %d\n", self.data); } template<class traits = default_optimizer_traits> class Optimizer{ friend typename traits::update_type; //friend void dj::foo<traits>(typename Optimizer<traits> & self); // How? public: //void foo(void); // How??? void foo() { dj::foo<traits>(*this); } void bar() { data.bar(); } //protected: // How? typedef typename traits::update_type update_type; update_type data; }; } // namespace dj int main() { dj::Optimizer<> opt; opt.foo(); opt.bar(); std::getchar(); return 0; }

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  • Query Membership using Linq

    - by user310657
    Hi, I am not a experienced programmer, I need to query the Membership User Collection provided in asp.net mvc. I want the members be able to add other members as friends, I have created a added friend table. Id, MemberId, Friend_MemberId, DateAdded I want to display a list of Members which are not added to this list (like filter already existing friends), but unable to query using linq, can anyone suggest a way, links, articles, would it be better to extend memebership class.

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