Dynamic attribute

[muthu moorthy]

<dynamic-attribute>true</dynamic-attribute>

The above declaration should be declared in DD or TLD ?

The above doubt arised to me when i do the mock exam of the 10 th chapter (Custom tag developement) in HF.

The question is :
Which must be true if you want to use dynamic attributes for a Simple Tag handler ?

The answer are :
B. Your Simple tag must use <dynamic-attributes> element in the TLD
C. Your Simple tag handler must implement the DynamicAttributes interface.

I get confused while i read Frederic notes which tells,

Two things are necessary to allow dynmic attributes in custom tags.
- Declare dynamic attributes in DD;
- Implement DynamicAttributes interface.

But, i dont find the detailed section on this dynamic attributes in HF Book.

It would be great if anybody could explain on this.

Thank you

[Gowher Naik]

<dynamic-attributes>true</dynamic-attributes> must be present in TLD.
For further information click Dynamic Attributes

[Rohitt Vermaa]

  
<tag>
    <name>tag1</name>
    <tag-class>package.tag1</tag-class>
    <body-content>empty</body-content>
    <attribute>
       <name>num</name>
       <required>true</required>
       <rtexprvalue>true</rtexprvalue>
    </attribute>
    <dynamic-attributes>true</dynamic-attributes>
</tag>

This is how the dynamic-attribute should be used in tld.
The simple tag handler must implement the DynamicAttributes interface. the only method in this interface is:
void setDynamicAttribute(String uri, String localName, Object value)

[muthu moorthy]

Thank you gowher & rohit