Thursday, December 18, 2014
Creating Jar file from the command line
The Java Development Kit includes a command-line program named jar that can be used to create jar files. If all your classes are in the default package (like most of the examples in this book), then the jar command is easy to use. To create a non-executable jar file on the command line, change to the directory that contains the class files that you want to include in the jar. Then give the command
jar cf JarFileName.jar *.class
jar file with class that has a main method:
Main-Class: ClassName
where ClassName should be replaced by the name of the class that contains the main() routine.
jar cmf ManifestFileName JarFileName.jar *.class
to create the jar file. (The jar command is capable of performing a variety of different operations. The first parameter to the command, such as "cf" or "cmf", tells it which operation to perform.)
By the way, if you have successfully created an executable jar file, you can run it on the command line using the command "java -jar". For example:
java -jar JarFileName.jar
Saturday, December 13, 2014
UNIX command - How can I extract a range of lines from a text file on unix?
sed -n 1,3000p filename > newfile
SQL Forcing the current identity value to a new value
USE AdventureWorks2012;
GO
DBCC CHECKIDENT ('Person.AddressType', RESEED, 10);
GO
http://msdn.microsoft.com/en-ca/library/ms176057.aspx
Thursday, December 11, 2014
Installing Incredible PBX for CentOS 6.5 or 7
Installing Incredible PBX for CentOS 6.5 or 7
cd /root
wget http://incrediblepbx.com/incrediblepbx11.4.centos.tar.gz
tar zxvf incrediblepbx*
./IncrediblePBX*
Reset the FreePBX Administration Interface Password (http://localhost/admin)
/root/admin-pw-change
Sunday, November 9, 2014
Easily locate iOS Simulator files for Mobile Development
During mobile development when using the iOS Simulator you need to review local files that you may be saving to the file system or sqlite db files.
Apple previously located the iOS Simulator files at
/Library/Application Support/iPhone Simulator/[OS version]/Applications
In the new version of xcode 6 the above location is no longer present. A bunch of googling turned up nothing until I found a program called SimPholders that provides a program that locates your simulator files for you along with providing a menu that lists the different simulator versions. Amaze balls!
http://simpholders.com/
Monday, November 3, 2014
List of UI Components (Datagrid, etc.)
Here is a ongoing list of client side Javacript UI components:
jQWidgets - jQuery based UI Widgets.
SmartClient/Isomorphic http://www.smartclient.com
SmartClient with Column grouping example: http://smartclient.com/smartgwtee/showcase/#cube_analytics
SmartClient Enterprise Edition Demo: http://smartclient.com/smartgwtee/showcase
Extjs.com
Ext.net
Jqgrid
Aspose
KendoUI
Telerik
DevExpress
ComponentArt
Wijmo
Wijmo Knockout Grid - Loading Remote Data sample
Wijmo Knockout Grid - Loading Remote Blog Post
Sunday, October 26, 2014
duoco.de - Compile C# code to JavaScript in Visual Studio
DuoCode is an alternative compiler, powered by Microsoft® Roslyn, and integrated in Visual Studio.
It magically cross-compiles your C# 6.0 code into high-quality readable JavaScript code, enabling rapid development of web applications utilizing the extensive features of the C# language, the Visual Studio IDE, and the .NET Framework base class libraries.
Here is a code sample:
// Original C# code
using System;
using DuoCode.Dom;
using DuoCode.Dom.Global;
using System;
using DuoCode.Dom;
using DuoCode.Dom.Global;
namespace HelloDuoCode
{
static class Program
{
public class Greeter
{
private readonly HTMLElement element;
private readonly HTMLElement span;
private int timerToken;
{
static class Program
{
public class Greeter
{
private readonly HTMLElement element;
private readonly HTMLElement span;
private int timerToken;
public Greeter(HTMLElement el)
{
element = el;
span = document.createElement("span");
element.appendChild(span);
Tick();
}
{
element = el;
span = document.createElement("span");
element.appendChild(span);
Tick();
}
public void Start()
{
timerToken = window.setInterval((Action)Tick, 500);
}
{
timerToken = window.setInterval((Action)Tick, 500);
}
public void Stop()
{
window.clearTimeout(timerToken);
}
{
window.clearTimeout(timerToken);
}
private void Tick()
{
span.innerHTML = string.Format("The time is: {0}", DateTime.Now); // try to put a breakpoint here
}
}
{
span.innerHTML = string.Format("The time is: {0}", DateTime.Now); // try to put a breakpoint here
}
}
static void Run()
{
System.Console.WriteLine("Hello DuoCode");
{
System.Console.WriteLine("Hello DuoCode");
var el = document.getElementById("content");
var greeter = new Greeter(el);
greeter.Start();
}
}
}
var greeter = new Greeter(el);
greeter.Start();
}
}
}
// JavaScript code generated by DuoCode
HelloDuoCode.Program = $declare("HelloDuoCode.Program", System.Object, 0, $HelloDuoCode$Assembly, function($t, $p) {
$t.Run = function Program_Run() {
System.Console.WriteLine$10("Hello DuoCode");
HelloDuoCode.Program = $declare("HelloDuoCode.Program", System.Object, 0, $HelloDuoCode$Assembly, function($t, $p) {
$t.Run = function Program_Run() {
System.Console.WriteLine$10("Hello DuoCode");
var el = document.getElementById("content");
var greeter = new HelloDuoCode.Program.Greeter.ctor(el);
greeter.Start();
};
});
HelloDuoCode.Program.Greeter = $declare("Greeter", System.Object, 0, HelloDuoCode.Program, function($t, $p) {
$t.$ator = function() {
this.element = null;
this.span = null;
this.timerToken = 0;
};
$t.ctor = function Greeter(el) {
$t.$baseType.ctor.call(this);
this.element = el;
this.span = document.createElement("span");
this.element.appendChild(this.span);
this.Tick();
};
$t.ctor.prototype = $p;
$p.Start = function Greeter_Start() {
this.timerToken = window.setInterval($delegate(this.Tick, System.Action, this), 500);
};
$p.Stop = function Greeter_Stop() {
window.clearTimeout(this.timerToken);
};
$p.Tick = function Greeter_Tick() {
this.span.innerHTML = String.Format("The time is: {0}", $array(System.Object, [System.DateTime().get_Now()])); // try to put a breakpoint here
};
});
var greeter = new HelloDuoCode.Program.Greeter.ctor(el);
greeter.Start();
};
});
HelloDuoCode.Program.Greeter = $declare("Greeter", System.Object, 0, HelloDuoCode.Program, function($t, $p) {
$t.$ator = function() {
this.element = null;
this.span = null;
this.timerToken = 0;
};
$t.ctor = function Greeter(el) {
$t.$baseType.ctor.call(this);
this.element = el;
this.span = document.createElement("span");
this.element.appendChild(this.span);
this.Tick();
};
$t.ctor.prototype = $p;
$p.Start = function Greeter_Start() {
this.timerToken = window.setInterval($delegate(this.Tick, System.Action, this), 500);
};
$p.Stop = function Greeter_Stop() {
window.clearTimeout(this.timerToken);
};
$p.Tick = function Greeter_Tick() {
this.span.innerHTML = String.Format("The time is: {0}", $array(System.Object, [System.DateTime().get_Now()])); // try to put a breakpoint here
};
});
Sunday, September 7, 2014
Run .NET Online - .NET Fiddle & Runnable
.NET Fiddle allows you to try out some code online in a browser. It's great to have a canvas to write a method or some .NET code without actually having to go through all the steps to create a new console project, etc.https://dotnetfiddle.net/
What is also cool as this tool can enhance your KBE's articles where you can create a .NET fiddle and then link to the fiddle in your KBE allowing the reader to see your code live first hand. This may not be ideal for all situations but it can be good most occasions.
Another service similar to .NET Fiddle is Runnable who allow you to run Java and other languages online in the browser in real time.
Sunday, August 10, 2014
.NET with Asterisk to build a Account Balance Interactive Voice Response Application
I want to share with you an application that is built with .NET that allows for checking your account balance via the telephone. This application uses telephony along with .NET to provide the necessary technologies to create an account balance inquiry system.
An Open Source telephony framework called Asterisk is used to provide this telephony or IP PBX functionality. Later I will go through an interactive demo so hold on as it’s going to get exciting. For those that have played with telephony you know how exciting it is to build a phone system and ring your first phone via software.
This application is not the typical Web Application or Report Application we are used to seeing at ToolBox, but I thought I would share something that pushes me out of my typical comfort level.
Before I dive into Asterisk here is a definition for PBX. PBX is short for private branch exchange. A PBX is a business phone system such as the one used at ToolBox and found in many companies. A PBX acts as the central switching system for phone calls within a business.
Key PBX Features
- VOIP
- Voicemail
- Mobility - Find Me aka call forwarding and Follow Me
- Conferencing
- Interactive Voice Response (IVR)
- Voicemail
- Mobility - Find Me aka call forwarding and Follow Me
- Conferencing
- Interactive Voice Response (IVR)
What is Asterisk?
Asterisk is an open source framework for building communications applications. Asterisk turns an ordinary computer into a communications server. Asterisk powers IP PBX systems, VoIP gateways, conference servers and other custom solutions. It is used by small businesses, large businesses, call centers, carriers and government agencies, worldwide. Asterisk is free and open source. To learn more go here. http://www.asterisk.org/get-started
What Is An IVR System?
IVR stands for Interactive Voice Response, a technology that automates routine customer service interactions by allowing callers to interact using touch tone digits or their voice. A basic example of an IVR application is an automated attendant or voice menu: callers are presented with a recorded menu and respond by selecting a digit or, in some cases, by entering an extension number. The automated attendant eliminates the need for a live operator to handle the call.
More complex applications include prescription refill for pharmacies, password reset, voice surveys, account balance inquiries, flight status checks, package tracking, pre-sales qualification questionnaires, etc. The key idea is to automate a routine, repetitive task that would otherwise require the time and effort of an employee. The savings potential gives IVR solutions a very rapid return on investment (ROI), as on server can potentially eliminate multiple live agents.
Asterisk comes with many PBX features out of the box such as the ability to configure VOIP, Voicemail, Mobility (Find Me, Follow Me), Conferencing and IVR. You can build basic Interactive Voice Response systems that would allow you to say call into a number and then have voice prompts that would to Press 1 for Sales, Press 2 for Sales, etc. For more complex functionality that will take an account id (i.e credit card number, telco account Id, etc.) and to then query a database for the account balance Asterisk provides the Asterisk Gateway Interface that allows you to build external applications in any language to create Interactive Voice Response functionality.
Account Balance IVR Application - An account balance inquiry application that uses .NET and Asterisk
In this sample a caller retrieves their account balance for their utility bill by:
1. Dialing a number
2. Hears a voice prompt to enter their account id followed by the hash key
3. Caller enters their account id followed by the hash key
4. Hears a voice prompt to enter their pin code for their account, followed by the hash key
5. Caller enters their pin code followed by the hash key
6. Hears a voice stating the balance is 45.23.
7. Hangup
2. Hears a voice prompt to enter their account id followed by the hash key
3. Caller enters their account id followed by the hash key
4. Hears a voice prompt to enter their pin code for their account, followed by the hash key
5. Caller enters their pin code followed by the hash key
6. Hears a voice stating the balance is 45.23.
7. Hangup
To see this application in action call:. Demo is down for now.
Example flow..this is not a real number assigned to my PBX so this sample will now work:
1. Dial 204-666-7932
2. Enter the account id 4531 followed by the hash key
3. Enter the pin code 1111 followed by the hash key
2. Enter the account id 4531 followed by the hash key
3. Enter the pin code 1111 followed by the hash key
If you enter an invalid entry you will hear 404, which I have used in place of voice prompts to save time.
4. You should hear your account balance and then a hangup.
This application is hosted was hosted on MS Azure with a CentOS based virtual machine that is running Asterisk with FreePBX. The AGI is hosted on a Windows Server that runs the .NET 4.5.1 Console Application below.
Asterisk Extension
To configure the phone number above (204...) I am using a VOIP provider called les.net with the Asterisk VOIP protocol called IAX2 which is similar to SIP only better.
Les.net provide a free DID's (phone number) with all accounts. The details to configure Asterisk Trunk setup and AGI configuration would be quite lengthily to write in this post (more on that later). If you are familiar with Asterisk or do venture to learn Asterisk you will find below the Asterisk AGI extension that is located in the asterisk folder in etc. /etc/asterisk/extentions_custom.conf.
[myaccount]
exten => 100,1,Agi(agi://vsweb.cloudapp.net/acccheck)
exten => 100,1,Agi(agi://vsweb.cloudapp.net/acccheck)
See below for the different the ways to get started with Asterisk.
.NET AGI Application
The AGI application is the main application to provide the Account Balance IVR Application functionality. Asterisk connects to the remote Console Application AGI (located on the Windows Server host) via FastAGI.
This application is using Entity Framework Code first and a Sql Azure database to store the account balances.
The data model for account balance:
CREATE TABLE [dbo].[CustomerAccount]
(
[CustomerAccountId] INT NOT NULL PRIMARY KEY IDENTITY,
[FirstName] NVARCHAR(64) NULL,
[LastName] NVARCHAR(64) NULL,
[PhoneNumber] NVARCHAR(16) NOT NULL,
[Password] NVARCHAR(64) NOT NULL,
[Balance] DECIMAL(18, 2) NOT NULL,
[IsActive] BIT NOT NULL DEFAULT 1,
[AccountIdentifier] NVARCHAR(24) NOT NULL
)
(
[CustomerAccountId] INT NOT NULL PRIMARY KEY IDENTITY,
[FirstName] NVARCHAR(64) NULL,
[LastName] NVARCHAR(64) NULL,
[PhoneNumber] NVARCHAR(16) NOT NULL,
[Password] NVARCHAR(64) NOT NULL,
[Balance] DECIMAL(18, 2) NOT NULL,
[IsActive] BIT NOT NULL DEFAULT 1,
[AccountIdentifier] NVARCHAR(24) NOT NULL
)
Console Application:
class Program
{
static void Main(string[] args)
{
//var port = agiServer.BindPort;
var mapStrategy = new GeneralMappingStrategy(
new List<ScriptMapping>()
{
new ScriptMapping() {
ScriptName = "acccheck",
ScriptClass = "MyAccount.Agi.AccCheckAGI"
}
});
{
static void Main(string[] args)
{
//var port = agiServer.BindPort;
var mapStrategy = new GeneralMappingStrategy(
new List<ScriptMapping>()
{
new ScriptMapping() {
ScriptName = "acccheck",
ScriptClass = "MyAccount.Agi.AccCheckAGI"
}
});
AsteriskFastAGI agiServer = new AsteriskFastAGI(mapStrategy);
agiServer.PoolSize = 200;
Console.WriteLine("Press ctrl-c to exit.");
agiServer.Start();
}
}
AccCheckAGI
class AccCheckAGI : AGIScript
{
public override void Service(AGIRequest param1, AGIChannel param2)
{
// Answer the call, this is important as otherwise
// we wont be able to perform certain action on the
// call flow.
Answer();
{
public override void Service(AGIRequest param1, AGIChannel param2)
{
// Answer the call, this is important as otherwise
// we wont be able to perform certain action on the
// call flow.
Answer();
// Get a numeric sequence from the caller, we prompt them
// to enter the number by playing an audio file asking
// them to do so.
// We're going to:
// # Play the file called "acccheck-enter_your_acc_number"
// # wait a fixed period of 20 seconds (20000ms) for them to
// enter the digits.
var accountId = GetData("custom/acccheck-enter_your_acc_number", 20000);
// to enter the number by playing an audio file asking
// them to do so.
// We're going to:
// # Play the file called "acccheck-enter_your_acc_number"
// # wait a fixed period of 20 seconds (20000ms) for them to
// enter the digits.
var accountId = GetData("custom/acccheck-enter_your_acc_number", 20000);
if (string.IsNullOrEmpty(accountId) )
{
SayNumber("404");
// TODO put in a loop asking for account id again
Hangup();
}
{
SayNumber("404");
// TODO put in a loop asking for account id again
Hangup();
}
// Get account id and verify by checking if not null
var accountByAccountId = GetAccountByAccountId(accountId);
var accountByAccountId = GetAccountByAccountId(accountId);
if (accountByAccountId != null)
{
var passcode = GetData("custom/acccheck-enter_your_pincode", 20000);
{
var passcode = GetData("custom/acccheck-enter_your_pincode", 20000);
// Verify pincode/password
if (!string.IsNullOrEmpty(passcode) && accountByAccountId.Password == passcode)
{
var balance = accountByAccountId.Balance.ToString();
var dollars = balance.Split(new char[] { '.' })[0];
var cents = balance.Split(new char[] { '.' })[1];
if (!string.IsNullOrEmpty(passcode) && accountByAccountId.Password == passcode)
{
var balance = accountByAccountId.Balance.ToString();
var dollars = balance.Split(new char[] { '.' })[0];
var cents = balance.Split(new char[] { '.' })[1];
StreamFile("custom/acccheck-your_balance_is");
SayNumber(dollars);
StreamFile("custom/acccheck-dollars");
StreamFile("custom/acccheck-and");
StreamFile("custom/acccheck-dollars");
StreamFile("custom/acccheck-and");
SayNumber(cents);
StreamFile("custom/acccheck-cents");
}
else // TODO stream file pass code does not match
{
SayNumber("404");
Hangup();
}
}
else // TODO stream file pass code does not match
{
SayNumber("404");
Hangup();
}
StreamFile("custom/acccheck-cents");
}
else // TODO stream file pass code does not match
{
SayNumber("404");
Hangup();
}
}
else // TODO stream file pass code does not match
{
SayNumber("404");
Hangup();
}
Hangup();
}
}
public static CustomerAccount GetAccountByAccountId(string accountId)
{
ICustomerAccountRepository repo = new CustomerAccountRepository();
{
ICustomerAccountRepository repo = new CustomerAccountRepository();
var accountByAccountId = repo.GetCustomerAccounts().FirstOrDefault(ca => ca.AccountIdentifier == accountId);
return accountByAccountId ?? null;
}
}
return accountByAccountId ?? null;
}
}
Getting started with Asterisk
The quickest way to get up and running with Asterisk is to download an ISO from FreePBX fromhttp://www.freepbx.org/freepbx-distro and then install this in a VM using VirtualBox or on some commodity hardware. Alternatively you can use PBX in a flash to install Asterisk with FreePBX on an existing Centos install by going through this article: http://nerdvittles.com/?p=10079
Sunday, August 3, 2014
Mylar - Store Encrypted data on the server. Built in JavaScript.
A project from MIT called Mylar is a platform for building secure web applications.
Mylar stores encrypted data on the server and decrypts data only in the user's browser. Mylar protects data on the server even if an attacker gains access to your server. An attacker would only have encrypted data. This opens up other applications such as preventing governments from gaining access to data. Simply put if only the user can decrypt the data then no government can view the data.
Project Page: http://css.csail.mit.edu/mylar/
Saturday, June 28, 2014
Using lodash Map to create a Projection on JavaScript Array of Objects
Link to plnkr: http://plnkr.co/edit/5v2dmoXbdihDE94sP1SO
Monday, June 9, 2014
Slow TFS Team Explorer Client, Get latest is slow, Merging is Slow in TFS
If you TFS Team Explorer Client is slow when clicking on folders, etc then removing the workspace and deleting the cache will fix the issue. Note this applies to the client side aspect when working with TFS, not the server side.
1. Check-in / Shelve your changes in TFS Server.
2. Delete your workspace. - backup your existing files somewhere for paranoia.
3. Remove workspace mapped folder from your file system. 4. Clear your local cache. (it’s “C:\Users\[YOUR_USERID]\AppData\Local\Microsoft\Team Foundation\3.0\Cache\” for TFS / VS 2010 and “C:\Users\[YOUR_USERID]\AppData\Local\Microsoft\Team Foundation\4.0\Cache\” for TFS / VS 2012.
5. Open VS 2012 and connect to your TFS server.
6. Re-create workspace and map it to a new location. Must be a new location. Then once you are back to regular speed you can delete this workspace and try with the TBS standard of c:\tbs
7. Perform Get Latest.
Monday, March 17, 2014
Sunday, January 5, 2014
Git How to
Some git commands that provide the basics for working with a git repository
git remote add origin https://username:password@bitbucket.org/[user]/gitrepo.git
git remote set-url origin https://username:password@bitbucket.org/[user]/gitrepo.git
git add filename
git commit -a
git push origin master
Add git origin
git remote add origin https://username:password@bitbucket.org/[user]/gitrepo.git
Change git url once you add a git origin
git remote set-url origin https://username:password@bitbucket.org/[user]/gitrepo.git
Add files
git add filename
Commit
git commit -a
Push latest code to repository for master branch
git push origin master
Clone a repository
git clone https://haighis@bitbucket.org/haighis/urlwordcountersample.git
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