Ugo Cei wrote:
Let's assume I have a Person class:
public class Person {
public String getFirstname();
public String getLastname();
public Address getAddress();
...
}
and an Address class:
public class Address {
public String getStreet();
public String getTown();
...
}
I am building a form interface for editing a Person, with this binding:
<fb:value id="street" path="address/street"/>
Now, when trying to save the form, JXPath will do a
jxpathContext.createPathAndSetValue which will fail because
person.getAddress() is null and the JXPath context doesn't know how
to create an Address.
I could work around this problem by making sure person.address is not
null before loading it into the form, but I don't like this solution.
A better option, maybe, would be setting a factory on the context,
like is shown here: http://jakarta.apache.org/commons/jxpath/users-
guide.html#Creating%20Objects
My problem is: where do I set this factory in CForms, assuming this
is possible at all?
Currently, it is not possible.
The solution would be to allow each JXPath binding to have its own
factory class. This can be easily implented by adding support for a
"factory" attribute in JXPathBindingBuilderBase.
Sylvain
--
Sylvain Wallez Anyware Technologies
http://people.apache.org/~sylvain http://www.anyware-tech.com
Apache Software Foundation Member Research & Technology Director
