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Subject: BeanUtils.copyProperties and null properties
Date: Fri, 4 Apr 2003 11:48:02 +0700
Message-ID: <3FA9BF42EF84CA439C5AA2B2190590A9036D9DCB@vicomail01>
Thread-Topic: BeanUtils.copyProperties and null properties
Thread-Index: AcL6ZXrNFGDsOQL2RFCCzh6DHEx1tQ==
From: "Budi Rostiarso" <Budi.Rostiarso@vico.co.id>
To: <commons-user@jakarta.apache.org>

hi to all,
i have a problem which i think is a usual problem, but i cant find the
answer in commons forum, so please help :)

Here we go:
i'm trying to copy properties from Struts' ActionForm to my POJO, and
vice versa.
All properties from ActionForm are String, as suggested,=20
and most of the properties in my POJO are Float objects, which
correspond to db column.

My problem is when the user send back the input form, and i use
BeanUtils.copyProperties to copy the content of AF to my POJO, all the
empty property string turns into default object.
For example the from the empty String i get a Float object with value of
0.0, which isn't what i need.=20
(i just need null, so i can update the db column with null value, not
0.0 value).

Is this the default behavior of BeanUtils.copyProperties? if its so, how
can i get around this?

If you need further information, i'll be glad to provide.


Thanks in advance


Ross.