bah?!? perhaps.... The matter is that you can do the same with NH3.1 with an AuxiliaryDataBaseObject creating a view and then mapping the same class to the view.
2011/3/26 José F. Romaniello <[email protected]> > awesome > > > 2011/3/26 Fabio Maulo <[email protected]> > >> it is new in NH3.2 >> >> 2011/3/26 José F. Romaniello <[email protected]> >> >> wow! didn't know about <subselect /> ... I learn something new about NH >>> every day :) >>> >>> >>> 2011/3/26 Fabio Maulo <[email protected]> >>> >>>> <class name="Blog" mutable="false"> >>>> <subselect> >>>> SELECT Blog.Id, Blog.Author, Blog.Title, Comment.Comment >>>> FROM Blog INNER JOIN Comment ON Blog.Id = Comment.Blog_id >>>> WHERE Comment.LanguageId = :blogcomment.languageId >>>> </subselect> >>>> <id name="Id"> >>>> <generator class="assigned" /> >>>> </id> >>>> <property name="Author" /> >>>> <property name="Title" /> >>>> <property name="Comment" /> >>>> </class> >>>> >>>> <filter-def name="blogcomment"> >>>> <filter-param name="languageId" type="int"/> >>>> </filter-def> >>>> >>>> >>>> 2011/3/25 Krzysztof Koźmic <[email protected]> >>>> >>>>> So I have a one-to-many tables in database that looks like the >>>>> following (I'm on NHibernate 3.1): >>>>> >>>>> blog >>>>> id >>>>> title >>>>> author >>>>> >>>>> comments >>>>> id >>>>> blog_Id >>>>> languageid >>>>> comment >>>>> >>>>> and I want to map it to a *single* class with *single* comment property >>>>> that maps to text column in comments table for current language. >>>>> >>>>> Basically the idea is identical to one ayende had few years back: >>>>> http://ayende.com/Blog/archive/2006/12/26/localizingnhibernatecontextualparameters.aspx >>>>> >>>>> The difference is I try to accomplish this without subselect but using >>>>> <join /> instead (mostly because the table with translations has more >>>>> columns than just the text that I may need to include in my joined class). >>>>> >>>>> So I created a solution for that and I'm also using filter to pass >>>>> language id to queries. I also have a noop property in my mapping for the >>>>> languageid as well as where clause in my mapping that does the filtering. >>>>> >>>>> And here's the SQL that NHibernate generates: >>>>> >>>>> SELECT this_.Id as Id0_0_, >>>>> this_.Author as Author0_0_, >>>>> this_.Title as Title0_0_, >>>>> this_1_.Comment as Comment1_0_, >>>>> this_1_.LanguageId as LanguageId1_0_ >>>>> FROM Blog this_ >>>>> inner join Comment this_1_ >>>>> on this_.Id = this_1_.Blog_id >>>>> WHERE (this_.LanguageId = 2 /* @p0 */) >>>>> >>>>> The SQL is invalid as the where should be on this_1_.LanguageId as the >>>>> value comes from the joined table, not the main one. >>>>> >>>>> Also the LanguageId column is mapped as access="noop" which TTBOMK >>>>> should mean it won't be queried for so I'm surprised to see NHibernate is >>>>> trying to select it as well. To me it is just wasting bandwith. >>>>> >>>>> So I have two questions now. >>>>> >>>>> 1. How can I accomplish what I'm trying to get to. >>>>> 2. Are those issues I mentioned (invalid where clause and ignoring noop >>>>> access) bugs in NHibernate or am I looking at it from the wrong angle? >>>>> >>>>> Reproduction demo app (along with database dump) available here if >>>>> someone wants to play with it: http://ge.tt/5xoiqYY >>>>> >>>>> cheers, >>>>> Krzysztof >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "nhusers" group. >>>>> To post to this group, send email to [email protected]. >>>>> To unsubscribe from this group, send email to >>>>> [email protected]. >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/nhusers?hl=en. >>>>> >>>>> >>>> >>>> >>>> -- >>>> Fabio Maulo >>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "nhusers" group. >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]. >>>> For more options, visit this group at >>>> http://groups.google.com/group/nhusers?hl=en. >>>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "nhusers" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> For more options, visit this group at >>> http://groups.google.com/group/nhusers?hl=en. >>> >> >> >> >> -- >> Fabio Maulo >> >> -- >> You received this message because you are subscribed to the Google Groups >> "nhusers" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/nhusers?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > -- Fabio Maulo -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nhusers?hl=en.
