Artorius: абстрактному синтаксическому дереву(AST) быть в NHibernate.

В репозиторий неофициальных дополнений к NHibernate одним из его ведущих разработчиков Fabio Maulo был добавлен проект Artorius. Проект призван решить давнюю проблему - отсутствие  абстрактного синтаксического дерева внутреннего языка запросов. В текущей версии обе основных технологии запросов HQL и Criteria API используют свои уникальные методы трансляции в SQL. Предполагается реализация внутреннего nHQL-AST, именно в который и будут преобразовываться запросы созданные с помощью доступных технологий: HQL( имеются ввиду строковые запросы), Criteria API, LINQ или любого другого языка запросов(кроме нативного SQL).

На текущий момент в репозитории есть определенние грамматики HQL в форме Бэкуса — Наура и реализация ast, при создании ast из строки hql используется модифицированный парсер GOLD:

Все тесты проекта на данный момент  направлены на тестирование грамматики, но как видно по коду разработка самого дерева тоже уже ушла  достаточно далеко, что позволяет сделать вывод: ast в NHibernate быть.

Visual Studio Team System 2008 Database Edition GDR - RTM

Visual Studio Team System 2008 Database Edition GDR - RTM - очень полезная новость, для тех кто разрабатывает для SQL Server в этой среде(я отношусь к этим людям). Поскольку это практически новый релиз инструмента, в нем очень много новых(недостающих) возможностей. Всем кто с ним работает советую "обновить" (установить) версию.

Feature list

• Project System
  • Full support for SQL Server 2000, SQL Server 2005 and SQL Server 2008 support.
    • All database objects are now modeled, therefore they are compared and part of deployment. The side-effect of this is that there are no more objects that need to be stored in pre- and post-deployment scripts.
  • Server vs. Database projects
    • This change allows you to model the different behavior of shared and server level objects inside SQL Server vs. user database level objects. 
  • Partial projects
    • Partial project allow you to share implementation between projects, with a single definition of the code
  • Composite projects
    • Composite projects extend database references, allowing you to add objects from other project to the name database schema namespace. So you can compose your database from other projects and/or DBSCHEMA file references
  • Database references using literals, in addition to SQLCMD token support
    • The addition of literal support facilitates that you do not have to change your code of 3-part names, when do do not require the flexibility of name independent deployment
  • Reference support for XML Schema Collections to include .XSD files
    • Enables single sourcing of XML Schema Collections from an .XSD file which itself can be used by other developers or tools.
  • Reference support of SQL-CLR projects and / or SQL-CLR assemblies
    • Enables the inclusion of a SQL-CLR project or a binary, to represent a SQL-CLR assembly. Like XSD references, the goal is single sourcing of artifacts inside the development environment
  • Import Schema and Import Script is now available through DTE
    • This allows the creation of macros or programmatic add-in to drive these common tasks.
  • No more "DesignDB"
    • The change to a fully model driven implementation makes the need for a local SQL Server database instance obsolete. Having a sandbox for your development environment is still am advised practice though, so you can test the changes independently and in an isolated environment.
• Build
  • Build validates the consistency of the schema model and produces all the files that you need to deploy the database
• Deploy
  • Deploy takes the output from the build stage and deploys this information based on the settings supplied
  • Deployment settings are now isolated in to the .SQLDEPLOYMENT file, which allows you to standardize and re-use the deployment settings
  • Most of the "Schema Compare" comparison options are now available as the deployment options, to increase the symmetry between the two
  • VSDBCMD.EXE, is a command line deployment tool, which enables the standalone deployment of Database Project
• Schema Compare:
  • Compares any combination of live databases, Database Projects and .DBSCHEMA files
  • Session level option support, which can be persisted and re-used
  • Object type level filtering allow you to exclude object types from the comparison
  • You can now quickly navigate back and forward between difference via the toolbar and optionally configurable keyboard shortcuts
  • Substitution of SQLCMD variables, allows for the comparison of projects that rely on the use of SQLCMD variables
  • Schema Compare can now be executed through DTE
• Data Compare
  • Support for SQL Server 2008 data types
  • Data Compare can now be executed through DTE
• Refactoring:
  • New refactoring types: Expand Wildcards and Fully-qualify Names (in addition to Rename, Move Schema and 3/4 part name refactoring)
  • The patented "preservation of intend" functionality makes is possible that the Deployment Engine will deploy renames and move schema operations as actual renames and move schema operations, instead of a DROP / ADD operation.
  • Extensibility enables the creation of your own refactoring types (operations) and refactoring targets.
• Database Unit Testing
  • Added support for SQL Server 2008
• Data Generation
  • BulkCopy based inserts in addition to the existing INSERT data sync
  • Sequential Databound Generator is now included in the product
• T-SQL Static Code Analysis
  • Execute analysis using MS Build and/or as part of the VS IDE build process
  • Including the ability to write you own T-SQL Static Code Analysis rules
• Extensibility
  • Public full fidelity .NET based T-SQL parser for SQL Server 2000, 2005 and 2008.
  • Public .NET based SQL Script DOM, for programmatically generation of SQL code (equivalent to the Code DOM in .NET)
  • Access to the Schema Model from within Visual Studio, this enables for example ability to write code generators based on the schema model.
  • Feature extensibility:
    • T-SQL Static Code Analysis rules
    • Refactoring types, these are the refactoring operations
    • Refactoring targets, these are the sources that you want to update as part of a refactoring operation
    • Data Generators
    • Data Distributions
    • Test Conditions

Ресурс на тему паттернов, антипаттернов и рефакторинга.

SourceMaking - ресурс, посвященный аспектам разработки программного обеспечения, перечисленным в названии темы сообщения. Таких ресурсов немало в сети, но на этом информация хорошо структурирована и красиво оформлена.

Улыбнули изображения категорий антипаттернов:

 

 

                    Антипаттерны разработки

 

 

 

 

 

 

                    Антипаттерны архитектуры

 

 

 

 

 

 

                    Антипаттерны управления проектом

 

 

 

Не могу не согласиться с Дмитрием Лобасевым: "Ребята здорово постарались!".