[nhibernate-issues] [NHJIRA] Resolved: (NH-2683) Add common dialect functions as extension methods for QueryOver

[Richard B. (JIRA) <nh...@gm...>]

     [ http://216.121.112.228/browse/NH-2683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Richard Brown resolved NH-2683.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 3.2.0Beta2

> Add common dialect functions as extension methods for QueryOver
> ---------------------------------------------------------------
>
>                 Key: NH-2683
>                 URL: http://216.121.112.228/browse/NH-2683
>             Project:  NHibernate
>          Issue Type: Improvement
>          Components: QueryOver
>    Affects Versions: 3.2.0Alpha2
>            Reporter: Richard Brown
>            Assignee: Richard Brown
>            Priority: Minor
>             Fix For: 3.2.0Beta2
>
>         Attachments: ProjectionsExtensions.zip, QueryOverSqlFuncsExts.zip
>
>
> Some of the common functions (that are registered in most, if not all Dialects) can be used in ICriteria using SQL-projections.
> Extensions methods can be added for these to allow queries along the lines of:
> s.QueryOver<Person>()
>     .Where(p => p.BirthDate.Year() == 1970)
>     .List()
> ... which can be translated to:
>     .Where(Restrictions.Eq(Projections.SqlFunction("year", NHibernateUtil.DateTime, Projections.Property<Person>(p => p.BirthDate)), 1970))
> ... and in turn to:
>     datepart(year, this_.BirthDate) = @p0;

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