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Charming Python: Easy Web data collection with mechanize and Beautiful Soup
For collecting data from Web pages, the mechanize library automates
scraping and interaction with Web sites. Mechanize lets you fill in forms and
set and save cookies, and it offers miscellaneous other tools to make a Python
script look like a genuine Web browser to an interactive Web site. A
frequently used companion tool called Beautiful Soup helps a Python program
makes sense of the messy "almost-HTML" that Web sites tend to
contain.
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24 Nov 2009 |
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Building smart Web applications for a smarter planet
Currently, Web-based applications are being developed for almost every
industry, providing online services that people can access anytime and
anywhere. Such services range from online tutoring to virtual shopping,
helping people complete their tasks with comfort and ease. Web-based
systems are quite attractive because there are no platform constraints and
installation requirements. With the emergence of Web 2.0, there is a lot of
momentum to build intelligent Web applications that provide more intelligent
services. This article
describes an architecture for intelligent Web-based applications and discusses
each component in the application with implementation details.
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24 Nov 2009 |
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Cultured Perl: Flickr, a business's bst frnd
Flickr isn't just for photo sharing and social networking; it's a
legitimate business tool. Learn how Perl programmers can use the CPAN Chart
modules to create charts and graphs, and the Flickr::Upload module to upload
the charts to Flickr.
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24 Nov 2009 |
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Build a Web presentation application using Ajax
technology, Part 2: Make the Web presentation editable
Web 2.0 allows the development of robust functionality with a
minimum of coding by
reusing existing components rather than reinventing them. Part 1 of this
series
discussed using an Asynchronous JavaScript and XML (Ajax) framework to create a
Web application to create slideshow presentations. Part 2 provides the
framework discussed in the first article and adds functions to make it editable.
Using this article, find out
how much you can achieve with relatively little code.
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17 Nov 2009 |
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Open output: Producing ODF spreadsheets from your Web services
Writing a Web service that produces data in text format is quite simple, but
users often prefer
getting something they can work in, like spreadsheets. Producing ODF spreadsheets isn't
particularly complicated, and this article introduces some ways of doing so working with
PHP and Python.
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17 Nov 2009 |
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Build a pureXML and JSON application, Part 3: Create OpenSocial gadgets for pureXML
With the Web 2.0 technology of OpenSocial gadgets, developers can easily
include their applications in popular Web sites, such as iGoogle, MySpace, Hi5,
LinkedIn, and others. In this article, explore OpenSocial gadgets through hands-on construction of an application that leverages the pureXML
capability of DB2. This article is the last in a series of three that illustrates how to build a
pureXML application whose user interface is a gadget that you can deploy in any OpenSocial compliant
Web site. Follow the steps in this article to build a user interface that stores and retrieves the
JSON data described in the first article through JSON Universal Services created in the second article.
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10 Nov 2009 |
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Build a pureXML and JSON application, Part 1: Store and query JSON with DB2 pureXML
JavaScript Object Notation (JSON), a popular textual notation in Web 2.0, is used to represent objects (or data structures) as serialized text when clients and servers exchange information. Some applications benefit from persisting JSON objects to maintain state across sessions. In this article, learn how DB2 pureXML can store, manage, and query JSON when you adopt a simple JSON-to-XML mapping.
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10 Nov 2009 |
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Create optimized Dojo builds for your custom Dojo artifacts
Create a custom Dojo build for your custom widgets without
including any modules from the dojo/dojox/dijit packages into your build output.
Custom Dojo builds reduce the number of modules to be downloaded by combining all
the modules into a single file, thereby reducing the number of network calls
required for the individual module files. These techniques were developed with a
real-world project where compact packages were a requirement. This article helps you to create
optimized Dojo builds using the Dojo build tool.
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10 Nov 2009 |
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Incorporate a Service Level Agreement into a Creative Commons license
Get examples of Service Level Agreement (SLA) values you
can add to your applications and exceptions you can include in
your SLAs. Take advantage of these techniques to make your
intended usage clearer to people who use and mash up your
application under a Creative Commons (CC) license.
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10 Nov 2009 |
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Managing your private cloud, Part 2: Using the WebSphere CloudBurst REST API interface
Several interface options are available to help you to interact with the
IBM WebSphere CloudBurst Appliance, which provides functionality for creating,
deploying, and managing IBM WebSphere Application Server virtual systems in a
private cloud. These interfaces include a Web 2.0 graphical user interface, a
Jython command line interface, and an HTTP REST API. This article discusses
the HTTP REST API, which provides a language-neutral interface that is ideal
for integrating WebSphere CloudBurst capabilities into existing applications
or user interfaces.
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04 Nov 2009 |
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Customizing with WebSphere CloudBurst, Part
3: Using script packages for customizing above and beyond patterns
Because every user scenario is unique, the IBM WebSphere CloudBurst
Appliance has built-in features to help you configure and customize your IBM
WebSphere Application Server environments. Part 3 of this series describes how
to customize and enhance your deployed WebSphere Application Server
environments using script packages.
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04 Nov 2009 |
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Dojo Grid using the MVC design pattern
Technologies are often linked together, and knowledge that you have in one
area can help you gain skill in another. This article introduces the major features of Dojo
Grid from an Model-View-Controller (MVC) design pattern
perspective. Using the article, discover how you can understand and easily master
Dojo Grid, even you haven't used it
before.
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03 Nov 2009 |
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Leveraging pureXML in a Flex microblogging application, Part 3: Using pureXML Web services to publish microblog entries to an HTML page
The pureXML capabilities of IBM DB2 allow you to store XML natively in a database
without modification, while Adobe Flex applications can read XML directly and
populate Flex user interfaces. In this three-part article series, you will create
a microblogging application that takes advantage of pureXML, Web services, and
Adobe Flex; and even allows you to publish your microblogging updates on Twitter.
In Part 1 of the series, you learned about Web Services and how they are enabled
using DB2 pureXML as you created the microblog database and tested it. Part 2
tapped into Adobe Flex and ActionScript to create the user interface of your application. In this article, the final part of the series, you will learn how to use your pureXML Web Services to publish your microblog entries to an HTML page.
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03 Nov 2009 |
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Leveraging pureXML in a Flex microblogging application, Part 2: Building the application user interface with Flex
The pureXML capabilities of IBM DB2 allow you to store XML natively in a database
without modification, while Adobe Flex applications can read XML directly and
populate Flex user interfaces. In this three-part article series, you will create
a microblogging application that takes advantage of pureXML, Web services, and
Adobe Flex; and even allows you to publish your microblogging updates on Twitter.
In Part 1 of the series, you learned about Web Services and how they are enabled
using DB2 pureXML as you created the microblog database and tested it. In this
article, Part 2 of the series, you will tap into Adobe Flex and ActionScript to
create the user interface of the application.
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03 Nov 2009 |
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Working with Web server logs
How do you know who is doing what and where on your site? Chances are
you have an Apache-style log for your site, and you just need to learn how to
mine it for valuable information. Learn about the format of Web server logs and
how to access them in code. Along the way, apply a recipe to identify spider traffic from Web
crawlers.
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27 Oct 2009 |
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Introduction to MVC Programming with Agavi, Part 1: Open a whole new world with Agavi
This is the first of a five-part series of articles written for the PHP developer interested in learning about an open-source, flexible, and scalable framework called Agavi. In this first article, you walk through the installation of the framework and the other required components, get an overview of Agavi and its functions, and create your first Web application.
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27 Oct 2009 |
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Introduction to MVC programming with Agavi, Part 3: Add authentication and administrative functions with Agavi
Continue to build the Web Automobile Sales Platform by adding the ability to add, delete, and update the automobile records in Part 3 of a five-part series. You will also see how to separate user functions from administrative functions with authentication.
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27 Oct 2009 |
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Introduction to MVC programming with Agavi, Part 4: Create an Agavi search engine with multiple output types including XML, RSS, or SOAP
Implement a simple search engine and add support for multiple output types such as XML, RSS, or SOAP for your sample Agavi program in Part 4. This five-part series is for the PHP developer interested in Agavi, a open-source, flexible, and scalable framework.
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27 Oct 2009 |
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Introduction to MVC programming with Agavi, Part 5: Add paging, file uploads, and custom input validators to your Agavi application
This is the final article in a five-part series written for the PHP developer interested in learning about an open-source, flexible, and scalable framework called Agavi. You'll learn to support file uploads, store user data in sessions, integrate third-party libraries and create custom input validators for your Agavi application.
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27 Oct 2009 |
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Introduction to MVC programming with Agavi, Part 2: Add forms and database support with Agavi and Doctrine
Work with the scalable, open-source Agavi framework to create an input form, use Doctrine to auto-generate the data models for the project, and integrate these models into the Agavi project in Part 2 of this five-part series.
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27 Oct 2009 |
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Web application security: Testing for vulnerabilities
The increasing reliance on data-driven Web sites has caused an incline in
the number of attacks launched against them. As a developer, understanding how a
site can be attacked is paramount to making it secure.
Discover some of the more common attacks, and learn about the tools you can use to
spot them.
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20 Oct 2009 |
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High-performance Web development with Google Web Toolkit and Eclipse
Galileo
By now, you have probably heard of Google Web Toolkit (GWT). You know
that it lets you write your Web applications in the Java programming language that is compiled into
JavaScript to run in Web browsers. This lets you be more productive by taking
advantage of Java's static typing and great tools like Eclipse. You have may
seen some of the useful and stylish widgets built on top of GWT. What
you may not know is that GWT lets you create high-performance Web
applications. In this article, we look at how you can use the Google
Plug-in with Eclipse Galileo to tap into the performance features of GWT, such
as compiler optimizations, deferred binding, and Ajax optimizations. Developer
performance is still an important part of GWT, so along the way, we will also
show you how tweak the Google Plug-in for Eclipse to increase your
productivity.
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20 Oct 2009 |
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Manage tasks with common Ajax workspace
Want to increase productivity when managing tasks of developing Ajax
applications? Regular developerWorks author Judith Myerson covers how you can use
common Asynchronous JavaScript and XML (Ajax) workspace as a way to collaborate with team members, make or get
workspace templates, allocate workspace dynamically, centralize communications
for better administration, and make or get Ajax libraries. She shows you how to
mitigate project risks to more acceptable levels and how to set up a pilot study
on the workspace to test the application before integrating it into legacy
enterprise systems.
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20 Oct 2009 |
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Automatically update a Web page with dynamic elements
You may know how to hide and display optional JavaServer Faces (JSF)
components by using JavaScript and Cascading Style Sheets (CSS) in
standard JSF components. To do this, you would first need to identify all JSF
components and write them into JSF pages. But, that is impossible to do when you are
developing a Web page that contains dynamic elements that are unknown until
run time. With this article, learn how you can clear old UI components while
automatically updating the dynamic
elements of a Web page, as well as how to use Java
code to add new
elements and put them into their proper spot on a Web page. You'll also learn how to bind
different event handlers to different dynamic elements of a Web page, how to
register a listener listening to changes of server-side data to invoke a page
refresh, and how to use Asynchronous JavaScript and XML (Ajax) techniques to refresh only the dynamic parts of the Web page.
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13 Oct 2009 |
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PHP bees and audio honey: Accessible agent-based audio alerts and
feedback
This article describes a system that uses open source
tools to collect, edit, and funnel information to a central database, where it is
arranged appropriately for presentation, not on the screen, but announced via the
audio system for the benefit of users such as those with visual impairments. The
system uses a number of PHP agents that operate independently to generate, edit,
arrange, and announce information.
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13 Oct 2009 |
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Cloud computing with PHP, Part 2: Using Amazon EC2 with the Zend Framework
The Zend Framework contains several classes that make using cloud-based
storage services easy. Part 1 of this "Cloud computing with PHP" series looks at using Zend classes with
Amazon's S3 cloud storage service. This article covers the Zend classes that
make it easy to work with virtual machines in Amazon's Elastic Compute Cloud
(EC2).
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13 Oct 2009 |
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Collaborate to brainstorm and share projects
Want a real-time interactive collaboration Web site? Regular
developerWorks author Judith Myerson talks about addressing the needs of
people who want to collaborate, and the developers who want collaboration
models that they can modify for different reasons. She gives three
collaboration scenarios: Supply Chain Management, Plant Engineering
Management, and Research Papers in Science, and covers the impact of IPv6 on
mobile devices.
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06 Oct 2009 |
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An introduction to the Web services framework for Jython
The open source SOA company's (WSO2) Web services framework for Jython (WSF/Jython) provides a simple
approach to creating and consuming Web services in Jython. This framework
integrates the Apache Axis2 Web services engine with Jython, extending
all the power and versatility of the Axis2 engine to Jython users. Now, with
just a few lines of code, Jython users can enjoy the benefits of Service-Oriented
Architecture (SOA) using Web services. Web service clients written using the WSF/Jython
framework can invoke enterprise Web services that require WS-Security.
WSF/Jython also supports sending binary attachments as MTOM.
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06 Oct 2009 |
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Ajax in a network: Security and topology challenges of aggregating content from multiple sites
in an Ajax architecture
There can be challenges when introducing Asynchronous JavaScript and XML
(Ajax) programming techniques into a network environment. This article looks
at security and topology scenarios that you might be trying to solve when
creating Ajax style architectures that aggregate content from multiple sites.
This article explores these scenarios using the IBM Tivoli Access Manager
WebSEAL product in conjunction with the IBM WebSphere Application Server
Feature Pack for Web 2.0 for developing Ajax style architectures for WebSphere
Application Server.
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30 Sep 2009 |
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Customizing with WebSphere CloudBurst, Part 2: Using WebSphere CloudBurst to customize a WebSphere middleware
environment
At the heart of the IBM WebSphere CloudBurst Appliance are IBM WebSphere
Application Server patterns. These patterns are pre-built, hardened
configurations that are best practice representations of WebSphere middleware
environments that are ready to be deployed to a private cloud. However, these
shipped patterns will not meet the needs of every deployment. For that reason
the WebSphere CloudBurst Appliance provides pattern customization capabilities
that enable you to produce your own highly customized WebSphere middleware
environments. Part 2 of this article series discusses how WebSphere CloudBurst
lets you build custom WebSphere Application Server patterns that represent
your unique topologies and configurations.
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30 Sep 2009 |
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Ten years of Web development
Ten years of developerWorks has created a vast amount of material. It's
interesting to pore back through the technology that we've explored and see how
much things have changed. I'll be looking at our colorful past along with what
was going on in our popular culture at the time to get a sense of perspective.
Join the ride.
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28 Sep 2009 |
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Build a RESTful Web service using Jersey and Apache Tomcat
Representational state transfer (REST) was introduced in early 2000 by Roy Fielding's doctoral dissertation.
However, in the Java community, it was not standardized until JSR 311(JAX-RS) was
finalized in 2008. The first release of its reference implementation is
even later. In this article, I introduce Jersey, which is the reference
implementation of JSR 311, by describing its essential APIs and annotations. I'll
also show you how you can smoothly transfer from servlet-style services to
RESTful services by integrating Jersey into Apache Tomcat.
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24 Sep 2009 |
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Create a dynamic Ajax-based Web application with the WebSphere Application
Server Feature Pack for Web 2.0
The IBM WebSphere Application Server Feature Pack for Web 2.0 provides a
rich set of components that enable developers to easily and more efficiently
build powerful Ajax-based applications. This article explains how you can
build a Web application that features dynamic charts using the Feature Pack
for Web 2.0. You will also see how you can combine major Web 2.0 facilities
(like Dojo, Web remoting, Web messaging, JSON4J, and so on) to create a
solution with a rich user experience, as well as how to integrate existing
back-end services into the Ajax-style architecture.
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23 Sep 2009 |
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Cloud computing with PHP, Part 1: Using Amazon S3 with the Zend Framework
The Zend Framework contains several classes that make using cloud-based
storage services easy. This article illustrates how to use those classes with
Amazon's S3 cloud storage service.
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22 Sep 2009 |
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Introducing Quercus, a Java-based PHP framework
Quercus is a new approach to authoring Web services and
applications using a mixture of Java and PHP. With the Quercus framework, Java and PHP are integrated with each
other, thus allowing you to conveniently incorporate versatile Java libraries
like Spring and Hibernate into applications. This article provides a brief
introduction of the framework along with some code samples. Explore the
features and advantages of the framework using a simple HelloWorld sample. And
finally, understand the framework architecture and
look at a real world example in more detail.
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22 Sep 2009 |
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Implement a real-time server push in Ajax applications using socket-based RIA
technologies
The new range of advanced user interface (UI) applications requires some
aspect of the "server-push" feature so clients can be notified immediately of
any server-side changes. Unfortunately, the HTTP spec does not address the issue of any
server-side initiated communication, so the server-push has traditionally been
implemented through client-side polling. This technique tends to generate a lot
of unnecessary traffic and non-optimized applications. Thankfully, certain Rich
Internet Application (RIA)
technologies do allow the opening of a dedicated socket channel, with the back-end server
providing an opportunity for Asynchronous JavaScript and XML (Ajax) applications to piggyback on their APIs and
implement a server push. This article explores this technique in a variety of
ways, and helps you understand it well enough to begin your own implementation.
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22 Sep 2009 |
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Creating juxtaposition tables, Part 1: Use Flex to create JTables
Use an Adobe Flex-based juxtaposition table, a two-dimensional visualization
assistant, to arrange, classify, and compare potentially large
quantities of data. With the juxtaposition table, you can define your
own custom perspectives in a convenient and compact view. This article
demonstrates how to dynamically create the table's columns and alter the table's
contents. You will also learn how to display numerous items in a single cell and how to give cells their shape and color.
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15 Sep 2009 |
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Mastering Grails: Creating a custom plug-in
In this Mastering Grails installment, Scott Davis shows you how to create your own Grails plug-in. Once you see how effortless it is to create a plug-in, you'll understand why more than 250 Grails plug-ins are available now, with new ones being added all the time.
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15 Sep 2009 |
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memcached and Grails, Part 1: Installing and using memcached
In this first half of a two-part article focusing on memcached and Grails,
author James Goodwill introduces you to the open source caching solution memcached.
Topics covered in this article include installation, configuration, memcached client
commands, and evaluating the effectiveness of your cache. Unlike articles about using
memcached with a language-specific client, this one focuses on direct interaction with
the memcached server. The goal is to give you the tools you need to monitor your
instance of memcached as well as to prepare you for the second half of the article, in which you will integrate memcached into a Grails application.
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15 Sep 2009 |
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Developing a Web 2.0 application using the InfoSphere Business Glossary REST API
IBM InfoSphere Business Glossary enables users to create, manage, and share an enterprise vocabulary and classification system.
In version 8.1.1, the Business Glossary team introduced a REST API that makes
glossary content easier to consume by enabling the development of custom applications based on particular needs.
This article provides step-by-step instructions on how to develop a portable, dynamic
read-write widget that uses the IBM InfoSphere
Business Glossary REST API in conjunction with various Web 2.0 technologies.
The widget enables users to find terms, examine the term's details, and make basic edits.
Our goal is for InfoSphere Business Glossary customers to
use the knowledge gained through building this sample widget as inspiration
for using the REST API to create their own custom applications.
This article is intended for software engineers who are familiar with Web 2.0
technologies and product designers who can apply the tools provided here to real world situations.
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10 Sep 2009 |
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Using the Technorati API
Technorati is a blog cataloging service that enables users to search virtually the entire blogosphere for articles of interest. Like most entries in the Web 2.0 domain, Technorati provides an API to automate much of its functionality. Also like most entries in the Web 2.0 domain, that API is provided as a REST service. In this article, work with examples and learn to get the most out of the Technorati API.
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08 Sep 2009 |
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Explore multithreaded programming in XUL
As you create cross-platform desktop applications using XUL, you also can
enhance your skills with JavaScript, CSS, and even HTML. XUL's cross-platform
capabilities are not a collection of least common denominator features. Instead,
XUL gives you the kind of power that you might expect from a desktop application
toolkit, including access to native threads. You can even access native threads
directly from JavaScript, writing code that executes in parallel. In this article,
you will examine the multithreading capabilities of XUL, and create an application
that uses multiple threads to retrieve data. You will take a classic IO-bound
application, one that accesses multiple remote data sources over the Internet, and
speed it up through multiple threads in XUL. The application will allow users to
view and compare anonymous results of three popular search engines: Google,
Yahoo, and Bing from Microsoft(R).
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01 Sep 2009 |
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GWT fu, Part 1: Going places with Google Web Toolkit
Google Web Toolkit (GWT) lets you use the Java language to implement rich client user interfaces that run in a browser. In this two-part article, David Geary brings you up to speed on the latest version of GWT and shows you how to implement a desktop-like Web application.
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01 Sep 2009 |
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Reduce online collaboration vulnerabilities
Web 2.0 tools are increasing the possibilities for online collaboration, both in the
business world and in people's personal lives. This increased usage of
collaboration tools equates to increased
risks if applications are not protected against vulnerabilities. Part of that
protection comes from good design and coding techniques that protect against
attacks. The other half of the equation is the contract or Service-Level
Agreement (SLA) that the user has with the service provider. In this article
I'll examine some of the known vulnerabilities and show you how you, as a developer and a
user, can protect yourself.
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01 Sep 2009 |
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Accessibility in Web 2.0 technology
Accessibility has become a hot topic as increased awareness and growing
requirements demand that applications take into account the needs of all
potential users. Accessibility covers not only the Web application, but document,
desktop application and hardware, and so on. In the Web application domain,
making static Web pages accessible is relatively easy. But for Web 2.0 technology,
dynamic content and fancy visual effects can make accessibility testing very
difficult. This article introduces the WAI-ARIA standard, which is
designed to make future Asynchronous JavaScript and XML (Ajax) widgets
accessible. The article also covers accessibility
principles in Web 2.0 design and provides several code samples to get you
started.
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01 Sep 2009 |
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Creating a declarative XML UI language
Writing GUIs in program code can often lead to messy design choices, which
in turn results in a blurring between business logic and UI code. Discover how to create a
declarative XML UI tag set with an accompanying Java(TM) framework that parses, validates,
constructs, and finally binds the declared GUI components to business logic at runtime.
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01 Sep 2009 |
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GMaps4JSF in the JSF 2.0 Ajax world
GMaps4JSF, a JavaServer Faces (JSF) mashup library, integrates Google Maps
with JSF. Using GMaps4JSF, you can construct complex street view panoramas and
maps with just a few
JSF tags. You can also easily attach different components to the map. This
article explains how to configure GMaps4JSF inside JSF 2.0
applications, and includes a brief introduction to JSF 2.0 Ajax. Using the
article, learn how you can create a simple
mashup application that uses both GMaps4JSF and JSF 2.0 Asynchronous
JavaScript and XML (Ajax).
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25 Aug 2009 |
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Git changes the game of distributed Web development
Version control systems are a core component of most development projects,
regardless of whether you're developing an application, a Web site, or an operating
system. Most projects involve multiple developers, often working at widely separated
physical locations. Distributed version control systems are nothing new, but the Git version
control system provides unique support for collaboration and interaction among developers.
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25 Aug 2009 |
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Find vulnerabilities with Metasploit
Metasploit is a vulnerability scanning and exploit development tool that
you can use to greatly enhance the security in your enterprise. Through the use
of Metasploit, an organization can locate previously unknown weaknesses and begin
addressing them.
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18 Aug 2009 |
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Java development 2.0: Hello Google App Engine
Open source solutions and borrowed infrastructures are changing the character of Java development, letting you deliver better software quickly and at a low cost. Andrew Glover, coining the term Java development 2.0 to encapsulate the cumulative force of these phenomena, launches a new series on some of the relevant tools and technologies. This first installment heralds the arrival of Java development 2.0 and explains how you can bring its concepts to fruition quickly with Google's App Engine for Java.
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18 Aug 2009 |
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Exploring Drupal V6, Part 1: Introduction
Need a Web site? Don't have lots of money for development? Say no more.
Drupal is an open source solution that runs everywhere. It has impressive features and
its latest incarnation, Drupal V6, is a joy to use. Here's an introduction.
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11 Aug 2009 |
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Create Web applications using IBM WebSphere sMash
DE
IBM WebSphere sMash Developer Edition 1.1 (DE) provides a Web-based
development environment called App Builder that allows you to develop Web
applications. Learn how to use this tool to create a simple online RSVP application
that provides Atom feeds.
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11 Aug 2009 |
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Mashup security
The mashup development model enables a vast array of possibilities for the
Web landscape. This openness, however, presents a plethora of new security
vulnerabilities. Discover tips and techniques for addressing some of these
problems.
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04 Aug 2009 |
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Git for Subversion users, Part 1: Getting started
Distributed version control systems (DVCSs) offer a number of advantages
over centralized VCSs, and for Subversion users looking to explore this model,
Git is a great place to start. Using Subversion as a baseline, this first of
two articles shows how to install Git, set up a remote repository, and begin
using basic Git commands.
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04 Aug 2009 |
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| |
Build a Web presentation application using Ajax
technology, Part 1: Developing the Web UI
How does Google Docs put such amazing functionality into a Web
application? They leverage Web 2.0 technologies, which provide robust
functionality with relatively simple code. In this article, learn how
to build a Web application to create slideshow presentations using Asynchronous
JavaScript and XML (Ajax) technology.
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28 Jul 2009 |
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Create a Flex component
Rich Internet Applications (RIAs) strive to bring
the interactivity, responsiveness, and robustness of traditional desktop
applications to Web-based applications. RIAs are especially important for developers who are hoping to leverage business intelligence (BI) and Web 2.0
approaches to content and delivery. Adobe Flex is an application at the forefront
of RIA-based solutions. A relatively new but fast-growing technology, Flex
leverages the capabilities of Adobe's Flash Player to provide first-rate
graphical presentations that feature highly responsive UIs. Flex ships with many
useful and robust components, but things get more difficult when you need to step
outside the narrow bounds of what Flex provides for you and create
domain-specific functionality. This introductory article provides an in-depth
look at the architecture of the Flex-rendering engine, walking you through the
process of incorporating Flex components into your RIAs and explaining what you
need to know to create new Flex functionality from scratch.
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28 Jul 2009 |
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Mashups: The new breed of Web app
Mashups are an exciting genre of interactive Web applications that draw upon content retrieved from external data sources to create entirely new and innovative services. They are a hallmark of the second generation of Web applications informally known as Web 2.0. This introductory article explores what it means to be a mashup, the different classes of popular mashups constructed today, and the enabling technologies that mashup developers leverage to create their applications. Additionally, you'll see many of the emerging technical and social challenges that mashup developers face.
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24 Jul 2009 |
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Comment lines by Christina Lau: IBM BPM BlueWorks, a WebSphere cloud experiment
Learn about new IBM WebSphere cloud experiments to create multi-tenant
WebSphere runtimes, tools, and programming and business models. A realization
of this architecture is the upcoming IBM BPM BlueWorks. This article provides
an introduction to BPM BlueWorks, reveals the technologies behind this new
offering, and offers some insight on where all this could go.
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22 Jul 2009 |
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Managing your private cloud, Part 1: Introducing the WebSphere CloudBurst Appliance
command line interface
The IBM WebSphere CloudBurst Appliance enables you to construct, deploy,
and maintain WebSphere Application Server virtual systems in a private cloud. In order to manage
the entire lifecycle of these systems in a private cloud, WebSphere CloudBurst
offers multiple administration interfaces, including a rich Web 2.0 interface
for GUI-based administration activities, and a command line interface (CLI)
that enables a scripted, automated administration approach. This article
explains how you can leverage the WebSphere CloudBurst CLI with examples of
how this CLI can be put to work in your own WebSphere CloudBurst
environment.
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22 Jul 2009 |
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Customizing with WebSphere CloudBurst, Part 1: Creating highly customized private clouds
This is the first of several articles that looks at the customization
features available in IBM WebSphere CloudBurst and how you can use them. Part
1 describes how you can create private WebSphere clouds, how and when to use
the WebSphere CloudBurst customization features, and how those capabilities
align with organizational responsibilities.
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22 Jul 2009 |
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Build Wikipedia query forms with semantic technology
By providing open access to increasing amounts of Linked Data, public SPARQL endpoints boost the growth of the Semantic Web by providing great data for you to use in your applications. As with many other data-driven Web sites out there, you can create a Web page by sending a query to these endpoints and then wrapping the results in HTML tags; the big difference for SPARQL endpoints is the public availability of this new data for your applications. With simple CGI scripting, get data from two different SPARQL endpoints to build applications that answer your user's questions about actors shared between two directors and which musicians have released which albums.
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21 Jul 2009 |
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Patterns + GWT + Ajax = Usability!
The Google Web Toolkit (GWT) allows for easier
development of complex Web sites. When combined with certain design patterns that
enhance usability and Asynchronous JavaScript and XML (Ajax), these
technologies and techniques provide a smoother look and feel to your application. The
result is an application closer to a traditional desktop program than to a
typical Web page.
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21 Jul 2009 |
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Mastering Grails: Understanding plug-ins
In this Mastering Grails installment, Scott Davis introduces you to the world of Grails plug-ins. Adding whole areas of new functionality to your applications couldn't be easier. You'll learn how plug-ins do their magic, and you'll use a plug-in to implement powerful search capabilities in the Blogito application.
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21 Jul 2009 |
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JSF 2 fu, Part 3: Event handling, JavaScript, and Ajax
JavaServer Faces (JSF) 2 Expert Group member David Geary wraps up his three-part series on JSF 2's new features. Find out how to use the framework's new event model and built-in support for Ajax to make your reusable components all the more powerful.
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14 Jul 2009 |
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Advanced jQuery
jQuery makes writing a good JavaScript-based Web application easy and
straightforward, but there are a few extra steps required to turn your good Web
application into a great Web app. This article details some of
the steps to give your Web application the final layer of polish.
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14 Jul 2009 |
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Feed your site with RSS and Atom
For modern Web 2.0 sites, the ability to mash up information from
different sources is a plus. You can use Google Web Toolkit (GWT) to get and
process XML-based news feeds such as RSS and the more modern Atom Syndication
Format. In this article, explore methods to access any appropriate feed -- despite
same-origin policy (SOP) limitations -- and to process the incoming XML
data.
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14 Jul 2009 |
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Integrate Creative Commons Licensing into your content with ccREL
With Web 2.0, Cloud, and SOA, it's more important than ever to have a clear
understanding of who owns information and what you are permitted to do with it.
The Creative Commons License contains a mechanism for providing more open usage
rights without giving up ownership. The Creative Commons (CC) Rights Expression
Language (ccREL) allows you to embed this information into Web content so that
information owners and information users can clearly see the rights granted and
choose accordingly, even through automation. Learn more about these techniques,
and see how to use them in your own
applications.
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14 Jul 2009 |
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Discover the power of Flex and CSS
Leverage the powerful capabilities of
CSS that are already built into the Adobe Flex
framework. This article provides the information you need to start using CSS in
Flex, and then provides tips and techniques to speed up your workflow when designing
and developing user interfaces with Flex.
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07 Jul 2009 |
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Build RESTful Web services and dynamic Web
applications with the multi-tier architecture
Continue your training on building RESTful Web services and dynamic Web
applications using the multi-tier architecture. This article gives you
hands-on experience on designing and building components in each tier and how
the components are tied together. It provides an example of how RESTful Web
services, Asynchronous JavaScript and XML (Ajax), and Spring Web Flow work
together to produce a desktop-like rich and responsive Web interface. It also
demonstrates how client programs such as Ruby scripts utilize the RESTful Web services to upload and download the user data from the server.
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30 Jun 2009 |
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Going green and staying secure
In this developerWorks article, understand the benefits and risks of
telecommuting. Learn how to create secure mashup applications for business users,
and be sure you know the important questions to ask service providers to help
ensure a secure and reliable environment.
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30 Jun 2009 |
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Comment lines by Kevin Haverlock: A closer look at the WebSphere Application Server Feature Pack for Web 2.0
The same technology used by IBM to create dynamic Ajax style applications is
available to you through the IBM WebSphere Application Server Feature Pack for Web
2.0. Learn how some of these key features can have a big impact on your Web
applications.
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24 Jun 2009 |
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The Support Authority: What’s new in IBM Support Assistant V4.1
IBM Support Assistant is a free serviceability workbench provided by IBM
to facilitate self-help diagnostics for software problems. This article
provides an overview of the newest features included in the IBM Support
Assistant Workbench and Agent V4.1 software offerings.
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24 Jun 2009 |
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Cloud computing for the enterprise, Part 3: Using WebSphere CloudBurst to create private clouds
Part
1 of this article series discussed cloud computing in general, including cloud
layers and the different cloud types, along with their benefits and drawbacks, and
explained why this movement is important for enterprise developers. Part 2
looked at the public cloud and how you can use IBM WebSphere sMash
and IBM DB2 Express-C to deliver Web applications hosted on a public
cloud infrastructure. This article provides an introduction to IBM WebSphere
CloudBurst and IBM WebSphere Application Server Hypervisor Edition and discusses how
these new offerings bring the significant advantages of private cloud computing to
WebSphere enterprise environments.
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24 Jun 2009 |
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Weaving a better Web page
A Cascading Style Sheets (CSS) framework expedites and simplifies the
design and development of Web pages. Moreover, a CSS framework produces more
standardized results in all browsers. Here's a look at two CSS frameworks, each
with a unique philosophy.
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23 Jun 2009 |
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Leveraging Amazon Web Services for enterprise application integration
Discover how to leverage XML and Amazon Web Services to integrate enterprise applications, and to build cross-platform application-integration capabilities using the Microsoft(R) .NET C#) and Java(TM) platforms.
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16 Jun 2009 |
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Intermediate jQuery
jQuery is a great JavaScript library, but what about its performance? Is
the trade-off between ease of use and a performance hit on the Web page worth it?
Is there even a performance hit at all? This article answers your
jQuery performance questions and offers some tips to improve its performance in
your own applications.
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16 Jun 2009 |
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SOA antipatterns
Service-Oriented Architecture (SOA) is the de-facto architectural approach
for many IT initiatives. It is therefore important to understand the
circumstances where this paradigm breaks, as this can significantly impact
the delivery of IT programs. This article highlights two SOA antipatterns that
define problems that can occur in the execution of SOA deliveries. A
simple frame of reference for SOA is first introduced in the form of a layered
reference architecture. The reference architecture is then used to illustrate the
underlying reasons for the occurrence of the antipatterns. For each antipattern a description is provided that highlights the root causes of the problem and the approaches to re-factoring the solution, hence facilitating successful delivery.
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09 Jun 2009 |
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A multi-tier architecture for building RESTful Web services
RESTful Web services have emerged as a promising alternative to SOAP-based
services due to their simplicity, lightweight nature, and the ability to transmit
data directly over HTTP. In this article, get an overview of the concept of REST and
RESTful Web services, and compare them to RPC-style/SOAP-based Web
services. You'll also learn about Java frameworks for building RESTful Web
services as well as a shared multi-tier architecture for building both
RESTful Web
services and dynamic Web applications.
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09 Jun 2009 |
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Mastering Grails: File uploads and Atom syndication
In this Mastering Grails installment, Scott Davis shows you how to upload files to your Grails application and set up an Atom syndication feed. With these last pieces in place, Blogito becomes a full-fledged blog server.
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09 Jun 2009 |
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Using the Twitter REST API
Twitter is undoubtedly one of the most recent and successful examples of social networking to appear on the World Wide Web. Twitter provides an API so Web developers can enable their users to access the various features that the Twitter site provides. In this article, learn the basics of using the Twitter REST API.
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09 Jun 2009 |
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The busy Java developer's guide to Scala: Enhancing the Scitter library
Scala is fun to talk about in the abstract, but using it in a practical
way makes the difference between seeing it as a "toy" and using it on the job. In this
follow-up article to his introduction to Scitter, a Scala client library for accessing Twitter, Scala enthusiast Ted Neward offers a more interesting and useful set of features for the client library.
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02 Jun 2009 |
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JSF 2 fu, Part 2: Templating and composite components
JavaServer Faces (JSF) 2 lets you implement user interfaces that are easy to
modify and extend with two powerful features: templating and composite components. In
this article -- second in a three-part series on JSF 2's new features -- JSF 2 Expert
Group member David Geary shows you how your Web applications can best take advantage of templating and composite components.
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02 Jun 2009 |
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Using steganography to avoid
observation
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02 Jun 2009 |
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JavaScript EE, Part 3: Use Java scripting API with JSP
In the previous two parts of this series, you've seen how to run JavaScript
files on the server and how to call remote JavaScript functions with Ajax. This
article explains how to use server-side JavaScript code with the JavaServer Pages
(JSP) technology and how to build Asynchronous JavaScript and XML (Ajax) user
interfaces that remain functional when JavaScript is disabled in the Web browser.
The sample code consists of a small JSP tag library that you can reuse in your own
applications as well as a dynamic Web form, which is generated with a piece of JavaScript code that can be executed on the Web server or in the Web browser.
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02 Jun 2009 |
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Doing more with the Django admin
The built-in administration console provided by Django is one of its biggest
selling points. What if you need to customize more than just the
look and feel and a couple of model fields? Find out how
to extend the existing admin application without ever modifying
the source.
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26 May 2009 |
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Working with jQuery, Part 3: Intermediate JQuery: Creating your own plug-in
jQuery lets you create your own plug-ins to
extend the functions of jQuery--and to give back to the jQuery community. This
article steps you through the process for creating your own plug-in and as well
as getting it listed on the jQuery plug-in community Web pages.
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26 May 2009 |
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Developing with Comet and Java
Explore the different implementations of
developing with Comet. See how popular Java Web servers like Jetty
and Tomcat have enabled Comet applications, and learn how to program with each server.
And finally, learn about the standardization proposals for Comet in
Java that are part of the upcoming Servlet 3.0 and JavaEE 6
specifications.
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26 May 2009 |
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Cloud computing for the enterprise: Part 2: WebSphere sMash and DB2 Express-C on the Amazon EC2 public cloud
Part
1 of this article series discussed cloud computing in general, including cloud
layers and the different cloud types, along with their benefits and drawbacks, and
explained why this movement is important for enterprise developers. This article
looks specifically at the public cloud and how you can use the IBM WebSphere sMash
and IBM DB2 Express-C
Amazon Machine Images (AMI) to deliver Web applications hosted on the EC2 public
cloud infrastructure.
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20 May 2009 |
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An introduction to RSS news feeds
RDF Site Summary (RSS) is catching on as one of the most widely used XML formats on the Web. Find out how to create and use RSS files and learn what they can do for you. See why companies like Netscape, Userland, and Moreover use RSS to distribute and syndicate article summaries and headlines. This article includes sample code that demonstrates elements of an RSS file, plus a Perl example using the module XML::RSS.
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13 May 2009 |
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JSF 2 fu, Part 1: Streamline Web application development
With version 2.0, JavaServer Faces (JSF) makes it easy to implement robust, Ajaxified Web applications. This article launches a three-part series by JSF 2.0 Expert Group member David Geary showing you how to take advantage of the new features in JSF 2. In this installment, you'll learn how to streamline development with JSF 2 by replacing XML configuration with annotations and convention, simplifying navigation, and easily accessing resources. And you'll see how to use Groovy in your JSF applications.
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12 May 2009 |
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Integrating Adobe Flex and IBM WebSphere Portal
Adobe Flex takes you to the next level of Web application development with
the concept of Rich Internet Applications (RIAs), while IBM WebSphere Portal
provides a composite tooling to build flexible, SOA-based solutions. But how do
you get the two of them together? One option is to directly integrate Flex into
WebSphere Portal server. This article walks you through a process to quickly
build rich client and component-based Flex applications for WebSphere Portal, as
well as a helpful method to reduce the size of WAR
files.
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12 May 2009 |
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My developerWorks: 6 ways to build your technical skills and your
professional network
With the debut of My developerWorks, two little characters ("My") make a
big difference: They take developerWorks from "just" the place where you find
award-winning how-to content for developers and IT professionals
to the place where you and your
peers congregate to connect, share, and collaborate. Great content is just the
beginning, and now it's time for you to take the next step: Create your
professional profile and your custom home page on My developerWorks. Then find
and connect with like-minded peers, start tagging and bookmarking, and invite
your peers into your My developerWorks network to share
expertise and build groups for further interaction and
collaboration.
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30 Apr 2009 |
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Get to know the QueryPath PHP library
HTML, HTTP, and XML are the undisputed triumvirate that form the
backbone of Web technology. For the PHP developer, working with these
can be frustrating. The new QueryPath library, a PHP cousin
of the jQuery JavaScript library, offers an efficient API for working
with XML, HTML, and HTTP. From Web pages to Web services, SVG to SPARQL, RDF
to Atom, QueryPath provides a robust yet simple API for contemporary Web
development in PHP. In this article, learn how to build QueryPath objects,
and how to traverse and manipulate XML and HTML. Walk through an example that uses QueryPath to access a
Web service (Twitter).
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28 Apr 2009 |
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Developing widgets with Dojo 1.x
Learn the basics of developing HTML widgets using the Dojo JavaScript
toolkit. This article gives you an introduction, and provides several examples
to help you in the process--starting with sample
widgets and moving up to more complex widgets, while highlighting and solving the common
issues you could encounter in the development phase.
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28 Apr 2009 |
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Mastering Grails: Authentication and authorization
Grails provides all the basic building blocks you need to put together a secure Web application, ranging from a simple login infrastructure to role-based
authorization, and in this installment of Mastering
Grails, Scott Davis gives you a hands-on lesson in securing your Grails application. You'll also learn about some plug-ins that can help you extend your applications' security capabilities in new directions.
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28 Apr 2009 |
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Securing a Web server
Web servers are one of the many public faces of an organization and therefore are
potentially an easy target. As a public resource, a Web server is like "shark bait" for some.
But it doesn't have to be: Learn how a Web server can be public and safe at the same
time.
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21 Apr 2009 |
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Working with jQuery, Part 2: Intermediate JQuery: The UI project
The jQuery UI package aims to create a well-defined and reliable set of
user interface
widgets that you can reuse within your own Web applications. The goal is
to provide well-tested widgets that go beyond those available in HTML Input
elements, and ease the work of all user interface
developers.
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14 Apr 2009 |
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Implement roles-based authorization
Learn how to implement a dynamic user interface
through user authentication. Authentication is often the requirement for
applications with multiple groups of users. Each group may require access to
application functionality that may need to be withheld from other groups. The
authentication mechanism must validate user credentials and control access to
application functionality based on the user's credentials. This article shows how
to implement a basic authentication mechanism using OpenLDAP and Tomcat. It
compares the OpenLDAP and Tomcat implementation to an OpenLDAP and WASCE
implementation. And finally, code examples show the implementation of the dynamic UI
using Java code and JSTL.
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14 Apr 2009 |
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Cloud computing for the enterprise: Part 1: Capturing the cloud
Looking back to our recent technological past, it’s clear that the cloud
computing movement has been coming in the time since distributed computing and its related
technologies (like grid computing and SOA) gained widespread adoption. Cloud
computing is now here, but many still have questions about this new technology. Part
1 of this article series discusses cloud computing in general, then dissects the layers of the cloud,
presents the different cloud types, along with their benefits and drawbacks, and
explains why this movement is important for enterprise developers.
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08 Apr 2009 |
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Deploying Django applications to a production server
Django is a Python-based open source Web application framework that
focuses on making the process of creating database-driven Web sites and Web
applications easier. Getting started with developing Django applications is
simple, as a development Web server is included with the framework. However,
this server is not suitable for use in a production environment, so further
steps are required to deploy your Django application to the Web. In
this article, you will learn about the Django framework and how to install it
on your local machine. Discover how a Django application is made and
about the automatic administration interface created for your application. You
will then find out how to deploy your Django application to the Web on a
server running Apache and mod_python. Finally, learn how Django
applications can and should be scaled as your application's requirements
grow.
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07 Apr 2009 |
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