Можно через функцию JSFUtils.resolveExpression() например так:
RichCommandLink link = (RichCommandLink)JSFUtils.resolveExpression(
"#{viewScope.ContractsTableBean.warningLink}");
Сама функция(метод JSFUtils) определена так:
/**
* Method for taking a reference to a JSF binding expression and returning
* the matching object (or creating it).
* @param expression EL expression
* @return Managed object
*/
public static Object resolveExpression(String expression)
{
FacesContext facesContext = getFacesContext();
Application app = facesContext.getApplication();
ExpressionFactory elFactory = app.getExpressionFactory();
ELContext elContext = facesContext.getELContext();
ValueExpression valueExp = elFactory.createValueExpression(elContext, expression, Object.class);
return valueExp.getValue(elContext);
}
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