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  • JPA 2.2 Brings Some Highly Anticipated Changes

    Released this past summer, JPA 2.2 delivered some frequently requested enhancements, especially by providing better alignment with Java 8 features, such as support for the Date and Time API and the retrieval of a query result as a Stream.

  • Introducing Reladomo - Enterprise Open Source Java ORM, Batteries Included! (Part 2)

    Goldman Sachs is widely known as a leader in investment banking, but they are very much a leading technology firm as well. Continuing our exploration of Reladomo, the primary Java ORM used at GS and now open source, GS Technology Fellow, Mohammad Rezaei looks at advanced features, such as sharding, caching, bitemporal access, performance, and testing.

  • Interview with Entity Modelling Tool Creator, Frans Bouma

    Our first .NET interview of the year is with Frans Bouma of the entity modeling tool LLBLGen Pro. This tool has been around for almost as long as .NET itself, but being a commercial product it isn’t as well-known as the free alternatives.

  • Advanced Use Cases for the Repository Pattern in .NET

    In our previous article, we looked at the basic patterns needed to implement a repository. In many cases these patterns were such a thin layer around the underlying data access technology they were essentially unnecessary. However, once you have a repository in place, many new opportunities become available.

  • Implementation Strategies for the Repository Pattern with Entity Framework, Dapper, and Chain

    This article will focus on the basic functionality that one would find in a typical repository created with .NET. We’ll look at both general functionality and how that functionality would be implemented using three different styles of ORM: Entity Framework, Dapper, and Tortuga Chain.

  • Starcounter vs. ORM and DDD

    The so-called “object-relation impedance mismatch” has long been discussed in engineering circles. Most attempts at a solution rely try to mask the issue by pulling logic into the application tier. Kostiantyn Cherniavskyi looks at these issues and shows how many of them can be solved with hybrid databases such as Starcounter.

  • ActiveJPA – Active Record Pattern for JPA

    ActiveJPA is a Java implementation of Martin Fowler’s Active Record pattern that wraps around JPA and provides useful abstractions to simplify data access. With ActiveJPA, models themselves act as a DAO and interact with the database without requiring additional code for the DAL. In this article the primary committer discusses ActiveJPA and provides plenty of usage examples.

  • Don’t jump the SQL ship just yet

    The SQL language has been evolving steadily over the last two decades. At the same time, the verbosity caused by the JDBC API in Java client code and the lack of first class SQL support within the Java language have led to the introduction of ORMs such as Hibernate, which was later standardised into JPA and the Criteria API.If SQL and JPA are diverging, where will our data interaction patterns go?

  • Book Review: Building Applications with the Android SDK, 2nd Edition

    The Android Developer’s Cookbook: Building Applications with the Android SDK, 2nd Edition is a collaborative effort by Ronan Schwarz, Phil Dutson, James Steele and Nelson To. The authors have succeeded in providing a solid reference book. A book for mobile app developers that can serve as an authoritative guide for newbies and intermediate to expert devs for creating awesome mobile apps.

  • Refactoring Legacy Applications: A Case Study

    To refactor legacy code, the ideal is to have a suite of unit tests to prevent regressions. However it's not always that easy. This article describes a methodology to safely refactor legacy code.

  • arrayDB, a New and Easy PHP ORM

    Most ORM libraries make you write a new class for each item you want to keep in the database. Extending this and that for no apparent reason is repetitious and capricious. Using techniques that can be applied to most languages, arrayDB looks at simplifying the whole process by doing away with statically defined classes.

  • Using Entity Framework to Successfully Target Multiple Databases

    Yevhen Shchyholyev discusses some of the problems that the user may face in the process of developing an application with Entity Framework that interacts with Oracle, MySQL, PostgreSQL or SQLite as well as SQL Server. It is intended to be useful to both developers using one of these databases for the first time as well as for those who regularly interaction with multiple databases.

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