Thomas Ramapuram wrote:
Hi, I have query regarding OGNL Expression. Can the "#name" kind of expression be used anywhere? Or are they applicable only in certain attributes of struts tags Till now I was using the %{name} expression and that too in the some attribute of a tag I tried using #name expression but it does not work. Is there any settings to be set (for example in web.xml) Any pointers would be a great help. Thanks Thomas
The expressions %{name} and %{#name} have different meanings. Anywhere one is valid, the other is valid too but obviously each will only 'work' if the expression resolves to a value.
- %{name} will look for a property named 'name' on your action (i.e. will result in a call to getName() on your action)
- %{#name} will look for a property or attribute named 'name' anywhere in the value stack, including in the request/session/application scopes
AFAIK, %{#name} is equivalent to %{name} when there is a getName() on the action, i.e. OGNL will look at the action first then search the rest of the value stack.
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