Re: [Digester DynaBeans] How to combine ?

[Lorrin Nelson <lh...@the-fam.net>]

Kai wrote:

 >Erik Price schrieb:
 >>
 >>
 >> Kai wrote:
 >>
 >>> is it possible (and if, how) using Digester to parse my xml file and
 >>> creating dynabeans out of the parsed properties ?
 >>
 >>
 >> Do you mean to generate the code to make a dynabean class?  I suppose
 >> you would have to write a class such as DynaBeanGenerator which has
 >> methods that can be called by a Digester instance as it parses the
 >
 >Erik,
 >thanks for your reply, but i think i did not point out my problem
 >clearly enough:
 >
 >i have a class which instantiates Digester and parses / maps my xml >file:
 >..
 >
 >   Digester digester = new Digester();
 >
 >     digester.push(this);
 >     digester.setValidating(true);
 >
 >
 >     digester.addObjectCreate("fields/element",  ElementBean.class  );
 >     digester.addSetProperties("fields/element");
 >
 >
 >  ...
 >
 >ElementBean is a Bean whith fixed properties. If properties in my xml
 >file change, i also have to change ElementBean.
 >My idea is to generate a DynaBean on the fly by setting the parsed
 >properties as bean properties.
 >
 >In the package description of beanutils i found the following code:
 >
 >  DynaProperty[] props = new DynaProperty[]{
 >         new DynaProperty("address", java.util.Map.class),
 >         new DynaProperty("subordinate", mypackage.Employee[].class),
 >         new DynaProperty("firstName", String.class),
 >         new DynaProperty("lastName",  String.class)
 >       };
 >     BasicDynaClass dynaClass = new BasicDynaClass("employee", null, 
props);
 >DynaBean employee = dynaClass.newInstance();
 >employee.set("address", new HashMap());
 >..
 >
 >My understanding is that i can dynamically create properties by filling
 >the DynaPropery[] array with DynaProperties and then instantiating the
 >bean with it, like above.
 >
 >i am searching for a way to parse my xml file with digester and create
 >these dynabean-properties with DynaProperties. Then, after having set up
 >my dynabean i want it to be filled with the property values.
 >I want the whole process to be done by Digester.
 >
 >


Kai, did you ever find a solution to this? Seems like it would be a 
common problem to me. Adding a new property shouldn't involve modifying 
so many different places in the code. (At least not for a small-scale 
project).


---------------------------------------------------------------------
To unsubscribe, e-mail: commons-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: commons-user-help@jakarta.apache.org