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Example of Dynamic attribute in Custom Tag

Aaron Raja
Ranch Hand

Joined: Jun 07, 2007
Posts: 206
Only info I get about
Dynamic attribute in Custom Tag are following no example can any one give me please?
Dynamic attributes
Simple tags and classic tags can handle dynamic attributes. Two things are necessary to allow dynamic attributes in custom tags :
􀂃 Declare dynamic attributes in DD;
􀂃 Implement DynamicAttributes interface.
DD declaration
To declare the use of dynamic attributes, one element must be added in the tag definition :
Custom tag class
The corresponding custom tag class must implement the DynamicAttributes class, which defines one method :
public void setDynamicAttribute(String uri, String localName, Object value) throws JspException
Most common implementation is to store the attributes in a <String, Object> map with the localName as key, and the value object as value.


Thanks, AR
Nikos Pougounias
Ranch Hand

Joined: Jan 16, 2008
Posts: 110
Hi Aaron,

These tutorials, I've created, have practical examples for dynamic attributes as well: Skills for Tag Files, Skills for Simple Tag handlers, and Skills for Custom Tag handlers.

Also, there is an excellent post here in JavaRanch, by the co-author of HFSJ.


Nikos' Java blog
I agree. Here's the link:
subject: Example of Dynamic attribute in Custom Tag
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