Comments (2)
I have the same question.
I change the unit test OnEntry_ShouldHaveAbilityToChange_ReferenceArgument:
for (int i = 0; i < 10; i++)
{
var entity = new TestEntity { Name = "Name", Number =i };
dynamic myTest = new MyTestClass();
myTest.ResturnObjectArgument(entity);
}
then debug the ChangeObjectArgumentAspect.OnEntry method,
the args.Arguments is always the first time values.
this Number still is zero,
How can I fix it?
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The problem is that the BoundaryAspectGenerator generates a DynamicMetaObject with BindingRestrictions provded by the base class.
var metaObj = base.BindInvokeMember(binder, args);
// then uses metaObj.Restrictions
Debugging these restrictions you can see that there are two type restrictions
These restrictions are used for caching. So when the ResturnObjectArgument is invoked any time after the first the invocation is a match and the original expression tree is used.
So on second invocation the aspect gets the first TestEntity. The second TestEntity is untouched.
To avoid this a BindingRestrictions needs to be created. This could be
BindingRestrictions.GetExpressionRestriction(Expression.Constant(false));
The InterceptionAspectGenerator does similarly.
from kingaop.
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