Is it possible to use not conditon in SPEL

Question

Hi experts ,
We want to use not condition in spel.
we are using the value "${oa.HzPuiOrgContactRolesVO.billTo}" for spel.
In the page i have to apply this spel in two places.
one on readonly and one on rendered place.
If the value of "${oa.HzPuiOrgContactRolesVO.billTo}" is TRUE
i want to make input text 1 readonly which is working fine. (Given spel for readonly)
i want to hide Remove button which I am unable to do as the spel is returning true . (Given spel for rendered)
Is is posible to make "${oa.HzPuiOrgContactRolesVO.billTo}" as false by using some expressions.
Thanks
Gayaz

Answer 1

SPEL doesn't support any form of expressions.
Do whatever you want in the VO getMethod().
eg:
if you want to compare and return some ture or false results, do like this in VORowImpl.java
public Boolean getXXConditionAttribute(){
//You can embedd any complex logic here and return the results
if(getAttribute1() =="XXX" || getAttribute2() == "YYY")
return true;
else
return false;
--Prasanna