Why can't you use the Commons BeanUtils MappedProperty feature?
Supposing you have these methods on your bean:
public void setProperty(String key, Object value)
public Object getProperty(String key)
then you can use this notation in the Struts nightly build:
<bean:write name="formBean" property="property(key)"/>
Fr.
-----Original Message-----
From: Stefan Wachter [mailto:[EMAIL PROTECTED]]
Sent: 26 November 2001 12:25
To: [EMAIL PROTECTED]
Subject: proposal for map properties in form beans (call for comments)
Dear all,
I have a lot of form bean classes that store their values in maps. Currenty
I must implement lots of similar getter and setter methods in each form bean
class in order to allow struts to access these values. E.g.
public String getName() {
return (String)myValues.get("name");
}
public void setName(String aString) {
myValues.put("name", aString);
}
My proposal is to enable struts to directly access values in maps. For
example a bean can have a map valued-property "values" (i.e. the method
"public
Map getValues();"). Now I want to access a value in this map exactly as if
it
was a normal property. For example in JSP:
<bean:write name="formBean" property="value.name"/>
The big advantage of this feature would be that I can drive the application
with meta-data. Adding a new property does not need the form beans to be
touched. Even the JSP could be prepared to generate additional fields.
Unfortunately when I scanned the struts sources I found that this kind of
extension is problematic because currently properties are accessed by the
java.beans.ProperyDescriptor instances. I think that the access would have
to be
changed to use reflection directly.
Has someone coments or suggestions on this topic?
Ciao,
Stefan
PS: This mechanism of accessing mapped values is built into the web-objects
framework.
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