Setter injection is the use of the property method. Constructor injection is the use of constructor-arg.
Teddy
On 7/18/06, Sean Corfield <[EMAIL PROTECTED]> wrote:
On 7/18/06, Perry Woodin <[EMAIL PROTECTED]> wrote:
> After setting this up, I went back to look at some of the examples that ship
> with ColdSpring and noticed that <property> seems to be used in favor of
> <constructor-arg>. Is there a general rule for when to use one over the
> other?
Dave Ross, in his presentation at CFUNITED, said "favor setter
injection over constructor injection".
Setter injection supports circular dependencies, constructor injection
does not (pretty much by definition).
It's better (IMO) to have objects constructed with just the data they
need in order to be usable and then inject everything else. In
general, I only use constructor injection for simple scalar values
(e.g., strings) and use setter injection for more complex properties.
--
Sean A Corfield -- http://corfield.org/
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"If you're not annoying somebody, you're not really alive."
-- Margaret Atwood
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<cf_payne />
