SessionScope e FlushAction no Castle ActiveRecord
Posted by Luiz Picanço | Posted in .Net, C# | Posted on 09-04-2010
Tags: .Net, activerecord, C#, castle, cshap, dotnet, flush, flushaction, hibernate, nhibernate, orm, persistence
3,044
O Castle ActiveRecord é uma implementação do padrão homônimo feita em cima nHibernate. Um ORM bastante conhecido no mundo Java. Apesar de alguns comportamentos serem realizados pelo nHibernate, estarei aqui citando o ActiveRecord como responsável por tais comportamentos.
Um problema muito comum que eu costumo me deparar, é com a utilização de lazy loading no ActiveRecord.
Geralmente na utilização de lazy loading em aplicações web, é utilizado o padrão Session per Request para o SessionScope. Só que por padrão, o ActiveRecord persiste automaticamente (em algumas situações) as entidades, mesmo que seus métodos Save ou Update não tenham sido invocados. Isso costuma gerar uma série de problemas, como por exemplo, entidades com o seu estado interno inválido sendo persistido.
Para resolver esse problema, deve ser especificado o FlushAction como Never:
1 | SessionScope session = new SessionScope(FlushAction.Never); |
Assim, o ActiveRecord não irá mais persistir automaticamente as entidades. Em contrapartida, mesmo invocando os métodos Save ou Update as entidades não serão persistidas. Para que isso ocorra, será necessário utilizar os métodos SaveAndFlush e UpdateAndFlush, respectivamente, ou utilizar o método Flush da instância do SessionScope.
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
Links…
[...]Sites of interest we have a link to[...]……
Blogs ou should be reading…
[...]Here is a Great Blog You Might Find Interesting that we Encourage You[...]……
Recommeneded websites…
[...]Here are some of the sites we recommend for our visitors[...]……
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
Recent Blogroll Additions……
[...]usually posts some very interesting stuff like this. If you’re new to this site[...]……
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
Bed Bath and Beyond Coupons…
http://bedbathandbeyondcoupons.me/bedbathandbeyondcoupons/...
me…
[...]But you can also choose to take drugs depending on the level of burning sensation[...]…
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
Sites we Like……
[...] Every once in a while we choose blogs that we read. Listed below are the latest sites that we choose [...]……
Great website…
[...]we like to honor many other internet sites on the web, even if they aren’t linked to us, by linking to them. Under are some webpages worth checking out[...]……
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Check this out…
Here are some of the sites we recommend for our visitors…
darmo seks…
Darmo seks w wybranych filmach dla doroslych….
Flash WebSite Design…
[...] Wonderful info; reckoned we would insert a few not related data, but really worth looking!!! [...]…
Wow!…
A very spectacular post….
Websites worth visiting…
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Gems form the internet…
[...]very few websites that happen to be detailed below, from our point of view are undoubtedly well worth checking out[...]……
Milk…
[...]So for those who are searching out to deal with your persistent neck discomfort and failed in a lot of of one’s earlier [...]…
abjure…
Tremendously good cheers, I think your current followers would definitely want more posts of this nature carry on the excellent content….
A Star wars Fan Site Mentions You…
[...]What blogs for political commentary do уоu recommend me to ѕеe?[...]…
Recommeneded website…
below you’ll find the link to some sites that we think you should visit…
Websites you should visit…
[...]below you’ll find the link to some sites that we think you should visit[...]……
Websites worth visiting…
[...]here are some links to sites that we link to because we think they are worth visiting[...]……
Garmin 1490t…
[...]below you’ll find the link to some sites that we think you should visit[...]…
iPhone 5…
[...]while the sites we link to below are completely unrelated to ours, we think they are worth a read, so have a look[...]…
You should check this out…
[...] Wonderful story, reckoned we could combine a few unrelated data, nevertheless really worth taking a look, whoa did one learn about Mid East has got more problerms as well [...]……
Sources…
[...]check below, are some totally unrelated websites to ours, however, they are most trustworthy sources that we use[...]……
Websites we think you should visit…
[...]although websites we backlink to below are considerably not related to ours, we feel they are actually worth a go through, so have a look[...]……
Cool sites…
[...]we came across a cool site that you might enjoy. Take a look if you want[...]……
Facebook ConverterMedical internet site…
[…]the time and energy to examine or perhaps look at the articles or perhaps web sites we’ve connected to under the[...]…