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From robert burrell donkin <>
Subject Re: [beanutils]DynaProperty readable/writeable information and PropertyUtils
Date Tue, 03 Jun 2003 21:04:38 GMT
hi toni

i don't see any real reason why a DynaProperty should not contain 
meta-data - for example whether a property is write, read-write or 
read-only. in order to preserve backwards compatibility, there is no 
guarantee that this data is accurate (in other words, older classes are 
not forced to supply accurate data) and a reasonable default (read-write) 
should be assumed.

by all means supply a patch - see containing this 

- robert

On Tuesday, May 27, 2003, at 03:21 PM, Toni Soliva wrote:

> Hi everybody,
> I am intending to use classes from org.apache.commons.beanutils.* in a 
> web application replacing old code of mine with a similar functionality. 
> In that context I noticed that the class DynaProperty has no method to 
> access the information if a property is read/write, read only or write 
> only, which is an information I would like to have in my application. The 
> class PropertyUtils also assumes all properties of DynaBeans to be 
> read/write properties.
> If the DynaBeans family of classes should be as near as possible in its 
> semantics to the java beans standard it seems to me, that it might be 
> advantageous to have the information about the readability/writeability 
> of the single properties available either via methods in DynaProperty or 
> via PropertyUtils. Typical examples for the usefulness of such 
> information are e.g. the WrapDynaBean (is there a set-method?) or 
> DynaBeans dealing with JDBC result sets (is the result set updatable?).  
> In case of standard java beans this information is available through the 
> java.beans.PropertyDescriptor.
> Is this information ommited by design or did nobody have the requirement?
>  Any comments on adding access to the readable/writeable information to 
> the API?
> I am referring to BeanUtils 1.6.1 and a search in the list archive did 
> not turn up information about this issue.
> Of course I would be happy  to contribute code if so desired.
> Toni
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