hibernate - Join an association multiple times with different aliases -

-

i think, problem have bug in hibernate (already tracked - https://hibernate.onjira.com/browse/hhh-879 ).

my question - there workaround join table multiple times grails criteria query?

the sql straight forward:

select s store s        inner join s.products prod1       inner join s.products prod2        prod1.type = 'shoes'    ,      prod2.type = 'shirts'

when use "createalias" in grails criteria query (one prod1 , 1 prod2) i´am getting following error:

org.hibernate.queryexception: duplicate association path: studytags ...

one possibilty might by, query or (one single join , prod.type = 'shoes' or 'shirts') , filter result set. problem solution is, if specify limit criteria query (max results), real result (after filtering) might have less entries specified.

any appreciated.

thanks.

ps: real code, experienced issue pretty complex. break problem down used example store , product... think query like

store.withcriteria{     createalias('products', 'prod1')     createalias('products', 'prod2')      and{         eq('prod1.type', 'shoes')         eq('prod2.type', 'shirts')     } }

although old question came acroos when searching solution. figured out there bug in hibernate make duplikacte aliases impossible. work around used using pure sql finding limited "id's" list , there check if other query requrements matched list. in example be" 

select x.id xtable x join products prod1 on... join products prod1 on... prod1.type= 'shoes' , prod.type = 'shirts';

and check

select x.id xtable x x.id in ("result of query")

Comments

Post a Comment

Popular posts from this blog

objective c - Change font of selected text in UITextView -

-
can suggest me how change font of selected text in uitextview.i cannot use uiwebview since have edit text. have seen pages app.how possible in app. see formatting text within uilabel differently . since need editing, should @ javascript-based editors such ckeditor or tinymce . highly recommend wwdc 2011 video session 511: "rich text editing in safari on ios."
Read more

php - Accessing POST data in Facebook cavas app -

-
so i've got simple form in canvas / iframe facebook app, , i'm trying pass along values post. reading on s.o. , fb's latest docs, understand it, data send via post form can accessed on receiving end $_request object. i read on thread on s.o. in order post forms work need pass along input named "signed_request" value current signed_request (i have signed request working ok otherwise...all login , authentication stuff working fine). isnt mentioned anywhere in official fb docs. so problem comes in $_request object signed request, , bunch of other session stuff. form inputs found. the way can read them set method of form "request" isn't real form method. takes of inputs , sends them args in url. horrible. here's sample page canvas app form i'm using try debug (leaving out authentication stuff): <form enctype="application/x-www-form-urlencoded" method="post" target="_top" id="my_form" action=...
Read more

c# - Getting control value when switching a view as part of a multiview -

-
i have following code in aspx page: <asp:button id="display_button" runat="server" text="display" onclick="button1_click" /> &nbsp; <asp:button id="edit_button" runat="server" text="edit" onclick="button2_click" /> &nbsp; <asp:button id="save_button" runat="server" text="save" onclick="button3_click" visible="false" /> &nbsp; <asp:multiview id="multiview1" runat="server" activeviewindex="0"> <asp:view id="view1" runat="server"> <asp:formview id="view_program" runat="server"> <itemtemplate> <%# eval("status").tostring().trim() %> </itemtemplate> </asp:formview> </asp:view> <asp:view id="view2" runat="server"> ...
Read more