readonly

we are going to be working with an old database. so it is very crucial that we do not modify the database/table/schemas under any circumstances (from the reporting modules), and as such i want to setup a persistence-context with some persistence units as read-only (for reporting modules), and some as normal JTA enabled. we have already thought about creating two accounts for using in these persistence units, one will be given read only access, the other will have read-write access. I was wondering if there is something simpler that we can do with the persistence.xml file or may be at the JDBC

Is it possible to use Hibernate and connect to a database with a read only connection? I will be working on a project that will require connecting to an existing database, pulling data from it, and doing some complex data manipulation in the application. Throughout all of this I can`t change anything in the database, hence the read only connection requirement. My first thought was to pull the data from the database using Hibernate so that I can have ready made Java objects represent the data, however, I can`t seem to find any information on how to force Hibernate to use a read only database

Why can't I initialize readonly variables in a initializer? The following doesn't work as it should: class Foo { public readonly int bar; } new Foo { bar=0; }; // does not work Is this due to some technical limits of the CLR? EDIT I know that new Foo { bar=0; } is the same as new Foo().bar=0; , but is "readonly" enforced by the CLR, or is it just a compiler limitation? Allowing a readonly to be set in an initializer introduces contradictions and complications that can't be enforced at compile-time . I imagine the restriction is to avoid ambiguity. The big key is compile-time validation.

Is there a way to make a read-only property of an object in PHP? I have an object with a couple arrays in it. I want to access them as I normally would an array echo $objObject->arrArray[0]; But I don't want to be able to write to those arrays after they're constructed. It feels like a PITA to construct a local variable: $arrArray = $objObject->getArray1(); echo $arrArray[0]; And anyways, while it keeps the array in the object pristine, it doesn't prevent me from re-writing the local array variable. Well, the question is where do you want to prevent writing from? The first step is making the

I know, that question was asked but it is not clear to me. I have put all fields 'readonly field' for Essai_TemperatureInline . I would like to add new Inline in the admin for records not created by current user. How to do if I want to add new records? class Essai_TemperatureInline(admin.TabularInline): model = Essai_Temperature extra = 5 ordering = ('choix__name', 'choix__lapropriete',) def get_readonly_fields(self, request, obj=None): if request.user.is_superuser == False: notBelongToMe = Material.objects.exclude(user=request.user) jj = 0 if obj: while jj < len(notBelongToMe): if