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Impact of the Use of Patterns in Web Development

"The combination of GXflow and Patterns WorkWith increased development productivity exponentially", pointed out Fabian Huenuman, a member of the development team of Profesionales Asociados.

Profesionales Asociados (PA) is a GeneXus subdistributor company in Neuquen, which offers specialized services provided by a multidisciplinary work team. "Our services are mainly directed to Small and Medium Sized companies and we think they need the same management and technological tools as large companies", pointed out Ricardo Callela, a partner at PA.

The company develops and markets a company management software that uses GXflow, ARTech's Workflow tool. PA's application has over 2,000 GeneXus objects; it was generated for Visual Fox Client Server, and now it is being migrated to Java-WEB and GXFlow 8.0., informed Callela.

When the company decided to migrate the applications built for Win envorinment to Web environment, it studied and approved several alternatives. "The first one was performing the manual transfer of all transactions and work panels, coding and simulating all the behavior achieved in the original environment. This methodology certainly looked as the simplest and most natural way, so we decided to take it", explained Callela.

We started from a 32-transaction stock, which implement a service order generation system for computer equipment. But as the migration progressed, we started noticing certain aspects that are not taken into account in Win environment applications development but constitute inherent restrictions for the development of applications for the Web, he pointed out. "Aspects to be considered did not just include those concerning object behavior, but also their appearance for the achievement of a user-friendly interface with the professional look of graphic design and coherence among all the objects", he added.

Faced with the unfeasibility of the first techniques they had chosen, the company searched for a new solution and decided to use GeneXus Patterns tool. .

"Thanks to this tool it was possible to take all the transactions of the Knowledge Base, and generate in very few steps the GeneXus objects with the necessary interface to operate the whole system with a professional graphic design quality", stated Fabian Huenuman, a member of Profesionales Asociados development team.

"Not only did we achieved system functionality but we also saved substantial migration time. The migration was performed by a junior analyst in just 25 days, which included the training with both the tool and the target environment of the migration, that is to say, the Web environment. This time is considerably lower when compared with the estimated time if we had continued with the first attempted migration techniques, emphasized Huenuman.

Additionally, the tool has enough parametrization capacity to enable the customization of the application to the needs not just of the users but also the analyst, ranging from the language to the structure of the generated pages. It even implements basic security features automatically, a critical aspect in this type of applications, commented the developer.

After this first application they decided to use Patterns in several new developments as a complement of the GXFlow tool; the latter enables modelling processes very quickly but a lot of time was wasted with the ABM of the auxiliary tables, user report options and other operations that are not oriented to processes.

With this GXflow-Patterns WorkWith combination development productivity increased exponentially, concluded Huenuman.

PA started developing with GeneXus 6.1 and uses GXflow from the beginning, since all its applications are built with the Management by processes paradigm. Today the company uses GeneXus 8.0 and GeneXus Yi version for their new developments.

In addition to Patterns, Profesionales Asociados is using client level Validation in WEB, Bussines Component, Master Pages and LDAP new features of theYi version, and this month it has started trying MySQL.

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