{"id":1394,"date":"2010-07-26T18:14:30","date_gmt":"2010-07-26T12:44:30","guid":{"rendered":"https:\/\/2thenew.today\/blog\/?p=1394"},"modified":"2015-07-09T14:59:44","modified_gmt":"2015-07-09T09:29:44","slug":"grails-load-proxy-domain-objects","status":"publish","type":"post","link":"https:\/\/2thenew.today\/blog\/grails-load-proxy-domain-objects\/","title":{"rendered":"Grails : load proxy domain objects"},"content":{"rendered":"

Hi Friends,<\/p>\n

I was going through grails docs, encountered a method called load(), found it really useful thought would share with you. What load() does is, it creates a proxy object and doesn’t retrieve the record from the database until property other than id is accessed.
\nLet us consider a scenario, where we have id of a Object “subject” and students of that subject needs to be listed. So we would generally do something like as given below:<\/p>\n

\n
Subject subject = Subject.get(subjectId)\r\nStudent.findBySubject(subject)\r\n<\/pre>\n<\/div>\n
In the above code, we had to load subject unnecessarily where its ‘id’ should have been sufficient. Now, with load no extra queries are required.<\/p>\n
\n
Subject subject = Subject.load(subjectId)  \/\/creates a proxy object, not retrieved from database \r\nStudent.findBySubject(subject)\r\n<\/pre>\n<\/div>\n
And same when used with criteria queries<\/p>\n
\n
Student.list{\r\n  eq('subject', Subject.load(subjectId))\r\n  ...\r\n}\r\n<\/pre>\n<\/div>\n
Thanks to the grails development team<\/a> for all their efforts!<\/p>\n
Cheers!!<\/p>\n
~~Amit Jain~~<\/p>\n","protected":false},"excerpt":{"rendered":"
Hi Friends, I was going through grails docs, encountered a method called load(), found it really useful thought would share with you. What load() does is, it creates a proxy object and doesn’t retrieve the record from the database until property other than id is accessed. Let us consider a scenario, where we have id […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":18,"footnotes":""},"categories":[7],"tags":[4840,347,346],"class_list":["post-1394","post","type-post","status-publish","format-standard","hentry","category-grails","tag-grails","tag-load","tag-proxy"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t