>>>>> "Craig" == Craig Longman <[EMAIL PROTECTED]> writes:
Craig> i see in the src dist for the reference jstl that there are a couple of Craig> classes that look promising to use. one is an interface Craig> (ExpressionEvaluator) and then an implementing class Craig> (ExpressionEvaluatorManager). using it appears to be as simple as this Craig> (from tag/el/core/ForEachTag.java): Craig> if( begin_ != null ) Craig> { Craig> Object r = ExpressionEvaluatorManager.evaluate( Craig> "begin", begin_, Integer.class, this, pageContext ); Craig> if (r == null) Craig> { Craig> throw new NullAttributeException("forEach", "begin"); Craig> } Craig> begin = ((Integer) r).intValue(); Craig> validateBegin(); Craig> } Craig> it is acceptable to utilize this class in this manner for custom tags? Craig> or is there a better/standard way. i have been unable to find any docs Craig> that talk about using the standard EL in your own tags, but if anyone Craig> has any pointers, i would greatly appreciate it. Another basically equivalent alternative is something like the following. I think I'm gravitating towards using ExpressionEvaluatorManager, instead of ExpressionUtil, as shown here, because I'm just planning on ignoring null values, which seems more efficient (at least from the POV of the interface) to do with ExpressionEvaluatorManager and ExpressionUtil. You treat null values as an error, which is just a different approach. try { setArg0((String)ExpressionUtil. evalNotNull("message", "arg0", getArg0(), String.class, this, pageContext)); } catch (NullAttributeException ex) { setArg0(null); } -- =================================================================== David M. Karr ; Java/J2EE/XML/Unix/C++ [EMAIL PROTECTED] -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>