When teams abandons an Object-Relational Mapper, ORM, it is often due to bad usage Jimmy Bogard stated in a recent presentation highlighting what he sees as incorrect and correct ways of using an ORM, including mapping and querying problems.
NHibernate 4.0 GA has been released. It comes with .NET 4.0 support, moving away from the Iesi.Collections library, and also supports some SQL Server 2012 features such as sequences and Query Paging.
At last month's OSGi DevCon in New York, the OSGi Alliance released OSGi Core Release 6. This adds a standard for representing Data Transfer Objects and a way of annotating interfaces indicating whether they are supposed to be implemented or used by clients. In addition, an osgi.native namespace and extension bundle activators have been added; read on to find out more.
Facebook has open-sourced Haxl, a library for efficient, concurrent data-access. The library leverages the traditional strengths of Haskell such as expressive type system, correctness and safety guarantees, as well as GHC's high performance run-time to solve the thorny issue of implicit, concurrent data access.
Rails 4.1 can now preload your application to improve startup time and comes with improvements for Action Pack, Active Record, and Action Mailer.
Agile retrospectives help teams to find and do actions to improve continuously. There are different ways to do follow up on the actions and to evaluate if actions are leading to better team performance and more value delivered to customers.
Telerik recently renamed OpenAccess ORM as Telerik Data Access with Improved User Interface and colored visual designer in addition to Telerik.DataAccess.Core NuGet, Telerik.DataAccess.Fluent and Telerik.DataAccess.Fluent.Sample NuGet packages.
Version 2.0 of Slick, a Functional-Relational Mapping, FRM, library for Scala, (corresponding to an Object-Relational Mapper, ORM, for object-oriented languages), was recently released with a code generator for reverse-engineering a database schema and new driver architecture to allow support for non-SQL databases.
OpenAccess ORM Q3 2013 SP1 Adds VS 2013 Support, Discontinued Classic Wizards, Oracle 9i and MySQL 5
The recently released OpenAccess ORM Q3 2013 SP1 by Telerik has introduced support for Visual Studio 2013 in addition to extended support for Visual Studio 2008. Moreover, support for classic wizards, Oracle 9i and MySQL 5.0 will be discontinued beginning with the next release of OpenAccess ORM.
The final version of the Object-Relational Mapping, ORM framework Hibernate 4.3 was recently released and is now a certified implementation of the JPA 2.1 specification, (JSR 338), released in May 2013.
David Wheeler has proposed a standard URI format for database connections. This proposal would allow applications built on different technologies to share the same connection string. That would be beneficial for a wide variety of tools including report builders, automated build and deploy tools, and ORMs.
When building a database-backed project using an ORM, developers can choose between starting with database tables, classes, or abstract models. To open the debate, we offer you Frans Bouma’s argument that, “Code-first O/R mapping is actually rather silly”.
Entity Framework continues to have performance problems when using larger EDMX models to generate classes. “If the EDMX only has one entity type materialization takes 840 ms […] but when the EDMX contains a richer model, for example one with 67 entity types and 92 associations, the same test takes 7246 ms to complete”.
With Facebook recently releasing Presto as open source, the already crowded SQL-in-Hadoop market just became a tad more intricate. A number of open source tools are competing for the attention of developers: Hortonworks Stinger initiative around Hive, Apache Drill, Apache Tajo, Cloudera’s Impala, Salesforce’s Phoenix (for HBase) and now Facebook’s Presto.
ORM Profiler v1.5 has been released with support for Entity Framework 6 and Async in addition to several improvements and bug fixes.