expression.setPrecompute("true".equals(attrs.getValue(getUri(), "precompute")));
expression.setPreserve("true".equals(attrs.getValue(getUri(), "preserve")));
try
{
expressionBeanUtility = new BeanUtility(expression);
}
catch (ClassCastException e)
{
throw new ParseException("Expression '" + className +
"' is not valid. The specified class is not an expression or function.",