Geek(Wisdom).com - Programming/Architecture

Inline MP3 Audio Player Insertion with JavaScript

Mon, 10 Nov 2008 08:08:17 -0700

Using simple JavaScript it is possible to automatically insert inline audio players after hyperlinks to MP3 files. If multiple player types are desired simple CSS can be used to control the visibility of the players.

Consolidating Quality Attribute Scenarios

Mon, 22 Sep 2008 14:39:03 -0600

One of the steps in a Quality Attribute Workshop is to consolidate the raw quality attribute scenarios that have been gathered. A helpful question to apply to each scenario when evaluating it for consolidation is, "Can this be abstracted without losing the essence of the scenario while at the same time covering more scenarios?"

Understanding Software Architecture

Mon, 22 Sep 2008 14:08:19 -0600

Software architecture is a discipline focused on the quality attributes of a system, the "ilities". While functional requirements and constraints are important to understand, the software architect is primarily concerned with the quality attribute requirements. The Software Engineering Institute at Carnegie Mellon University uses the following definition of software architecture.

The software architecture of a program or computing system is the structure or structures of the system, which comprise the software elements, the externally visible properties of those elements, and the relationships among them.

Greylisting for your telephone

Fri, 12 Sep 2008 11:45:00 -0600

Greylisting is "method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will "temporarily reject" any email from a sender it does not recognize. If the mail is legitimate, the originating server will try again and the email is accepted. If the mail is from a spammer it will probably not be retried since a spammer goes through thousands of email addresses and can not afford the time delay to retry."

Why not apply a similar technique to your telephone? It could be done without much effort in this day of caller-id. Imagine if you had a device that, when plugged into your telephone line, would allow you to automatically answer the phone for unknown numbers and give the caller a message. The message could be generic or it could be instructions to do something specific. You could be program the device with a list of white listed (allowed) telephone numbers as well as blacklisted (denied) numbers. The device could give a different message based on whether the number is in the blacklist or simply unknown. If the calling number is on the white list the device does nothing, allowing standard telephonic devices to continue operating.

Extracting distinct e-mails from a large text file

Fri, 05 Sep 2008 12:51:10 -0600

perl -wne'while(/[\w\.\-]+@[\w\.\-]+\w+/g){print "$&\n"}' BigFileContainingEmails.txt | sort -u > output.txt

Populating a PostgreSQL Calendar Table

Sun, 28 Oct 2007 14:01:59 -0600

I'm using PostgreSQL for my data warehouse. I needed a calendar table for doing joins and a quick way to populate it. So I created my calendar table with:

CREATE TABLE "CALENDAR" (

    "YYYYMMDD" date NOT NULL

);

Then I populated it with the following SQL:

INSERT INTO "CALENDAR" ("YYYYMMDD") select to_date('20000101', 'YYYYMMDD') + s.a as dates from generate_series(0,36524,1) as s(a);

This quickly puts records into the CALENDAR table for every day starting with 1/1/2000 and ending with 12/31/2099.

Stop form spam by using CSS to hide a field

Wed, 30 May 2007 10:10:07 -0600

I hate form spam. Whether the form is a contact form, a survey, or something else spamming can make life a pain. SANS has an interesting piece on techniques that can be used to reduce or prevent form spam. In my opinion the best solution is the one that has the least impact on legitimate users, is easy to implement, can be implemented in numerous ways, and has the highest negative impact on spammers. That's why I like the idea of including a form field that is required to be empty. To make it easier on legitimate users the field can be hidden using CSS. This way legitimate users aren't bothered with it, yet spambots are compelled to fill it in.

.Net Developers Community

Tue, 01 Aug 2006 07:37:38 -0600

Hey , this is new to here
pl. post very new interesting points or newly explored things here See u soon....

Kernux

Tue, 23 May 2006 12:56:23 -0600

Kernux is a fully kernel-mode http-daemon for Linux. Currently Kernux is in it's developing stage. Similiar developments in the same area were khttpd by Arjan van de van and Tux web-server by Ingo Molnar. Khttpd was included in the linux testing kernel 2.5 by Linus Torvalds. But it was actually not in kernel-mode of operation. Also it handled dynamic requests which is assumed to be insecure for the server OS by the Linux kernel developers. Tux is another implementation of kernel mode http-daemon, being developed by RedHat. The developer is Ingo Molnar, the creator of O(n) scheduler, which control the procsses from Linux kernel version 7.2 onwards.

Java Password Strength Check

Fri, 19 May 2006 12:34:02 -0600

How do you insure your users passwords meet required standards?
For a front end HTML solution to strong password checking see Steve's Javascript example.
On the Java server side or from the command line take a look at PasswordCheck. This code extends Steve's script onto the server side allowing pre-defined rules to determine pass or fail strength checking before the user's password is stored to the database, LDAP or other directory server. Open source licensed.

Constructing event-driven services in a service-oriented architecture

Tue, 17 Jan 2006 12:23:08 -0700

In the article Event-driven services in SOA Jeff Hanson provides a helpful overview of how to use Mule to construct event-driven services in an SOA. We are investigating the use of Mule and ActiveMQ as foundational components of our messaging framework for our identity management project at my day job.

Open Middleware

Wed, 29 Sep 2004 10:22:26 -0600

OpenAdapter is open source EAI (Enterprise Application Integration) software. Written in Java, OpenAdapter can creat application to application or application to middleware connections. OpenAdapter provides "many ready-built interface components for JMS, LDAP, Mail, MQ Series, Oracle, Sybase and MSSQL Server as well as data exchange formats such as XML. New components are regularly added." [OpenAdapter]

Open Source JMS

Mon, 27 Sep 2004 07:07:12 -0600

"OpenJMS is an open source implementation of Sun Microsystems's Java Message Service API 1.0.2 Specification."