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Ruby Preserves by Craig Buchek How simple can we make an Object-Relational Mapper (ORM) that's still useful? What if we just used SQL, instead of trying to hide it from developers? I decided to find out. In this presentation, we'll explore a simple ORM that uses the Repository and Data Mapper patterns. We'll also see how using these patterns enables us to write simpler model code. Help us caption & translate this video! http://amara.org/v/H09j/
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In this video titled 'Ruby Preserves', Craig Buchek discusses his development of a lightweight Object-Relational Mapper (ORM) for Ruby, which he refers to as a micro ORM. The presentation addresses the complexities commonly associated with traditional ORMs and seeks to explore the utility of a simpler ORM that doesn't abstract SQL operations away from developers. Key points discussed include: - **Definition and Purpose of ORM**: Buchek explains that an ORM serves to bridge the differences between SQL databases and object-oriented programming in Ruby, addressing the 'impedance mismatch' issue. - **Inspiration for Ruby Preserves**: He describes his dissatisfaction with existing ORMs and his journey in creating his own, emphasizing the learning process inherent in developing new software. - **Simplicity versus Functionality**: Buchek poses a critical question about how simple an ORM can be while remaining useful, suggesting the adoption of SQL directly rather than abstracting it away. - **Comparison to Active Record**: He contrasts his approach with Active Record, highlighting the complexities and code bloat associated with it, advocating for a more streamlined method of ORM development. - **Data Mapper Pattern**: The presentation introduces the Data Mapper pattern, which offers a clearer separation between domain logic and data access. Buchek argues that this pattern can lead to better scalability and a more manageable codebase. - **Implementation Details**: He outlines specific features of Ruby Preserves, such as direct SQL execution, relationships implementation ('has many' and 'belongs to'), and performance considerations like eager loading to address the 'N + 1 query problem'. - **Future of Ruby Preserves**: Buchek shares his vision for the future development of Ruby Preserves, including automatic mapping of database structures and exploring other paradigms for ORM design. - **Final Thoughts and Acknowledgments**: He concludes by reflecting on the feedback received and the ongoing challenges he faces in ORM development, inviting further interaction from the audience. Overall, the presentation emphasizes the potential for simplicity in ORM design, the importance of understanding SQL fundamentals, and the need for continuous improvement and learning in software development.
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