The Okapi framework was initially developed by the Liip AG together for use at local.ch as thin layer mainly handling XSLT transformation and request mapping between the Java backend and the PHP based frontend. It has evolved since then but has stayed true its heritage of being the thinnest possible layer that combines various open source libraries. In this spirit the sfYaml component was integrated in version 1.1 of the framework. Okapi 2 has integrated various additional symfony components to further reduce the amount of code that has to be maintained in house, while at the same time giving Okapi a very modern architecture having adopted the event dispatcher, request handler, service container components. This sessions explains why we choose to integrate these components and how we went about implementing them and more importantly what lessons we learned along the way.
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