Latest Articles

Apache OFBiz Service Engine: Part 2

by Jonathon Wong Rupert Howell | June 2009 | Java Open Source

In the previous part of the article by Jonathon Wong and Rupert Howell, we looked at Defining and creating a Java service, Service parameters, Special unchecked (unmatched) IN/OUT parameters, and Security-related programming. In this part, we will look at the following:

  • Calling services from code (using dispatcher)
  • IN/OUT parameter mismatch when calling services
  • Sending feedback; standard return codes success, error and fail
  • Implementing Service Interfaces
  • Synchronous and asynchronous services
  • Using the Service Engine tools
  • ECAs: Event Condition Actions
Read Apache OFBiz Service Engine: Part 2 in full

Apache OFBiz Service Engine: Part 1

by Jonathon Wong Rupert Howell | June 2009 | Java Open Source

In this two-part article by Jonathon Wong and Rupert Howell, we will be exploring the Service Engine. Services in OFBiz operate in a Service Oriented Architecture (SOA). These services not only have the ability to invoke other services internally, but can also be 'opened up' and invoked by remote applications using, amongst other methods, the widely adopted messaging protocol SOAP.

Besides serving as a platform for interoperability, OFBiz services also offer us additional capability to organize our code. The traditional organizational strategies in object-oriented Java were a great improvement over the procedural paradigm. Wrapping both methods and variables together into objects to form a powerful "behavioral model" for code organization (where object's methods and variables define their behavior). Similarly with OFBiz services we are able to bundle groups of behavior together to form a coherent "service". We can say that OFBiz services, in terms of code or software organization, operate at a higher level than Java object-oriented organizational strategies.

In this part, we will be looking at:

  • Defining and creating a Java service
  • Service parameters
  • Special unchecked (unmatched) IN/OUT parameters
  • Security-related programming
Read Apache OFBiz Service Engine: Part 1 in full

Themes and Templates with Apache Struts 2

by Dave Newton | June 2009 | Open Source

In this article by Dave Newton we will learn how to modify the built-in themes and templates of Struts 2. We'll introduce a requirement to a recipe entry screen to have some different behavior when there is a validation error. The default behavior now is to change the style of the label and print the error message above the field. We'd like to highlight the entire row as a gentle reminder that our user has left out something important.

Read Themes and Templates with Apache Struts 2 in full

ER Diagrams, Domain Model, and N-Layer Architecture with ASP.NET 3.5 (part2)

by Vivek Thakur | June 2009 | .NET Architecture & Analysis Microsoft

This is the second part of two-part article by Vivek Thakur on N-Layer Architecture with ASP.NET 3.5. In the first part we saw the need for a 3-layered solution and examined ER-diagrams, domain models and UML. In this part we will we will explore a 1-tier 3-layer Architecture using a Domain Model and Object Data Source Controls.

Read ER Diagrams, Domain Model, and N-Layer Architecture with ASP.NET 3.5 (part2) in full

Implementing Document Management in Alfresco 3- part1

by Munwar Shariff | June 2009 | Content Management Java Open Source

In this article by Munwar Sharrif, you will learn about the basic features of creating, editing, and managing content in Alfresco by using Alfresco Explorer. With Alfresco, you can manage any type of document, such as HTML, text, XML, Microsoft Office documents, Adobe PDF, Flash, scanned images, multimedia, and video files. You will also understand the concepts of creating and using categories and smart spaces. By the end of this article, you will have also learned how to create spaces and load them with documents.

Read Implementing Document Management in Alfresco 3- part1 in full
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