After googling another 2 hours I found the solution: Since tomcat 6.0.16 we have to add the org.apache.el.parser.COERCE_TO_ZERO=false VM argument. @Strub: Did you have set this VM argument too?
For more infos: http://balusc.blogspot.com/2008/07/dao-tutorial-use-in-jsf.html#EmptyToNullConverter EmptyToNullConverter struberg wrote: > > Hmm, works perfectly over here when adding the following to web.xml: > <context-param> > > <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name> > <param-value>true</param-value> > </context-param> > > as Jakob already suggested. > > LieGrue, > strub > > --- On Mon, 1/10/11, Marsman <mars....@gmx.de> wrote: > >> From: Marsman <mars....@gmx.de> >> Subject: Re: How to persist null values with JSF2? >> To: users@myfaces.apache.org >> Date: Monday, January 10, 2011, 1:52 PM >> >> >> The action on the commandButton calls a save()-Method in my >> backing bean. At >> this point, I got the empty fields instead of null. You can >> see this in my >> initial post. I'm using JPA with Hibernate. >> >> Titus >> >> >> >> struberg wrote: >> > >> > Did you do your debugging in your backing bean action >> or do you only look >> > at the database? If JPA is involved, then the jpa >> provider may replace >> > null with empty strings (known issue on oracle). >> > >> > LieGrue, >> > strub >> > >> > --- On Mon, 1/10/11, Marsman <mars....@gmx.de> >> wrote: >> > > > -- View this message in context: http://old.nabble.com/How-to-persist-null-values-with-JSF2--tp30622750p30634470.html Sent from the MyFaces - Users mailing list archive at Nabble.com.
